阅读说明：本技术 一种相控整流电路控制方法、装置及相关组件 (Phase control rectification circuit control method and device and related components ) 是由 高丽红 黄伟平 王定富 于 2020-03-25 设计创作，主要内容包括：本申请公开了一种相控整流电路控制方法,包括：获取相控整流电路的当前负载信息；通过电压控制环或电流控制环输出与当前负载信息对应的当前电压调节量；根据当前电压调节量得到控制角,通过控制角控制相控整流电路的晶闸管导通或关断。本申请通过电压环与电流环单环同时计算,竞争输出的方式对相控整流电路进行控制,两环路可根据相控整流电路的当前负载信息无缝切换,既可以实现稳压与限流的目的,又可以保证负载突变时动态指标良好,同时采用数字控制避免了模拟控制的弊端,节约了成本,且稳压点与限流点可通过软件灵活控制。本申请还公开了一种相控整流电路控制装置、电子设备及计算机可读存储介质,具有以上有益效果。(The application discloses a control method of a phase-control rectification circuit, which comprises the following steps: acquiring current load information of a phase-controlled rectifying circuit; outputting a current voltage regulating quantity corresponding to current load information through a voltage control loop or a current control loop; and obtaining a control angle according to the current voltage regulating quantity, and controlling the conduction or the disconnection of a thyristor of the phase control rectification circuit through the control angle. This application calculates with the electric current ring monocycle simultaneously through voltage ring, and the mode of competing the output is controlled the rectifier circuit of controlling mutually, and two loops can be according to the seamless switching of rectifier circuit's of controlling mutually current load information, both can realize steady voltage and current-limiting's purpose, and dynamic index is good when guaranteeing the load sudden change again, adopts digital control to avoid analog control's drawback simultaneously, has practiced thrift the cost, and steady voltage and the nimble control of current-limiting point accessible software. The application also discloses a phase-control rectification circuit control device, electronic equipment and a computer readable storage medium, which have the beneficial effects.)

1. A control method of a phase-controlled rectifying circuit is characterized by comprising the following steps:

acquiring current load information of a phase-controlled rectifying circuit;

outputting a current voltage regulating quantity corresponding to current load information through a voltage control loop or a current control loop;

and obtaining a control angle according to the current voltage regulating quantity, and controlling the conduction or the disconnection of a thyristor of the phase control rectification circuit through the control angle.

2. The phase-controlled rectifier circuit control method according to claim 1, wherein after obtaining current load information of the phase-controlled rectifier circuit, the phase-controlled rectifier circuit control method further comprises:

judging whether the current load information of the phase control rectification circuit meets a current limiting condition;

correspondingly, the process of outputting the current voltage adjustment amount corresponding to the current load information through the voltage control loop or the current control loop specifically includes:

if the current load information of the phase-controlled rectifying circuit does not meet the current limiting condition, outputting the current voltage regulating quantity corresponding to the current load information through a voltage control loop;

and if the current load information of the phase-controlled rectifying circuit meets the current limiting condition, outputting the current voltage regulating quantity corresponding to the current load information through a current control loop.

3. The phase-controlled rectifier circuit control method according to claim 2, wherein the current load information of the phase-controlled rectifier circuit includes a current voltage feedback value, a current voltage set value, a current feedback value, and a current set value of the phase-controlled rectifier circuit;

correspondingly, the process of judging whether the current load information of the phase-controlled rectifying circuit meets the current limiting condition specifically comprises the following steps:

outputting a current first voltage regulating quantity corresponding to a current voltage feedback value and a current voltage given value through the voltage control loop;

outputting a current second voltage regulating quantity corresponding to a current feedback value and a current given value through the current control loop;

if the current first voltage regulating quantity is larger than the current second voltage regulating quantity, judging that the current load information of the phase control rectifying circuit meets the current limiting condition;

and if the current first voltage regulating quantity is smaller than or equal to the current second voltage regulating quantity, judging that the current load information of the phase-controlled rectifying circuit does not meet the current limiting condition.

4. The phase-controlled rectifier circuit control method according to claim 3, characterized in that the current load information of the phase-controlled rectifier circuit further includes a current voltage actual value of the phase-controlled rectifier circuit;

correspondingly, after the current load information of the phase-controlled rectifier circuit is obtained, and before the current voltage adjustment amount corresponding to the current load information is output through the voltage control loop or the current control loop, the control method of the phase-controlled rectifier circuit further includes:

judging whether the actual value of the current voltage is greater than the given value of the current voltage or not;

and if so, performing a de-integration operation on the voltage control loop.

5. The phase-controlled rectifier circuit control method according to claim 3, characterized by further comprising:

when the current load information of the phase-controlled rectifying circuit meets the current limiting condition, controlling the current second voltage regulating quantity output by the current control loop to be smaller than or equal to the sum of a preset reference quantity and the current first voltage regulating quantity output by the voltage loop;

and when the current load information of the phase-controlled rectifying circuit does not meet the current limiting condition, controlling the current second voltage regulating quantity output by the current control loop to be smaller than or equal to the maximum output limiting value of the current control loop.

6. The control method of the phase-controlled rectifier circuit according to any one of claims 1 to 5, wherein the process of obtaining the control angle according to the current voltage adjustment amount specifically includes:

obtaining a control angle cosine value according to the current voltage regulating quantity and the cosine relational expression;

obtaining a control angle according to the cosine value of the control angle;

wherein the cosine relation isα is the control angle, U_outIs the current voltage actual value, U, of the phase-controlled rectifier circuit_sFor the current voltage adjustment, K is the transformation coefficient, U_iIs the input mains voltage.

7. The control method of the phase-controlled rectifier circuit according to claim 6, wherein after obtaining the cosine value of the control angle from the current voltage adjustment amount and the cosine relation, and before obtaining the control angle from the cosine value of the control angle, the control method of the phase-controlled rectifier circuit further comprises:

performing cosine value domain amplitude limiting operation on the control angle cosine value to obtain a target cosine value, wherein the range of the target cosine value is [ -1, +1 ];

correspondingly, the process of obtaining the control angle through the cosine value of the control angle specifically includes:

and obtaining a control angle according to the target cosine value.

8. A phase-control rectifier circuit control device, comprising:

the acquisition module is used for acquiring the current load information of the phase control rectification circuit;

the adjusting module is used for outputting the current voltage adjusting quantity corresponding to the current load information through the voltage control loop or the current control loop;

and the control module is used for obtaining a control angle according to the current voltage regulating quantity and controlling the conduction or the disconnection of a thyristor of the phase-controlled rectifying circuit through the control angle.

9. An electronic device, comprising:

a memory for storing a computer program;

a processor for implementing the steps of the phase controlled rectifier circuit control method according to any one of claims 1 to 7 when executing said computer program.

10. A computer-readable storage medium, characterized in that a computer program is stored thereon, which, when being executed by a processor, carries out the steps of the phase-controlled rectifier circuit control method according to any one of claims 1 to 7.

Technical Field

The present disclosure relates to the field of phase-controlled rectification, and more particularly, to a method and an apparatus for controlling a phase-controlled rectification circuit, and a related component.

Background

At present, phase control rectification control is mostly realized by hardware, the hardware control scheme can increase used devices and the cost of the whole machine, the area of a control panel and the volume of the whole machine can be increased by the extra control devices, and by adopting hardware circuit control, an output voltage stabilizing point and an output current limiting point cannot be flexibly arranged or changed and can only be finely adjusted by adjusting a potentiometer and the like, so that the phase control rectification control is extremely inconvenient.

Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.

Disclosure of Invention

The application aims to provide a control method and device of a phase-control rectifying circuit, electronic equipment and a computer readable storage medium, which can realize the purposes of voltage stabilization and current limitation, can ensure good dynamic indexes when a load suddenly changes, avoids the defect of analog control by adopting digital control, saves the cost, and can flexibly control a voltage stabilization point and a current limitation point through software.

In order to solve the above technical problem, the present application provides a control method for a phase-controlled rectifier circuit, including:

acquiring current load information of a phase-controlled rectifying circuit;

outputting a current voltage regulating quantity corresponding to current load information through a voltage control loop or a current control loop;

and obtaining a control angle according to the current voltage regulating quantity, and controlling the conduction or the disconnection of a thyristor of the phase control rectification circuit through the control angle.

Preferably, after obtaining the current load information of the phase-controlled rectifier circuit, the phase-controlled rectifier circuit control method further includes:

judging whether the current load information of the phase control rectification circuit meets a current limiting condition;

correspondingly, the process of outputting the current voltage adjustment amount corresponding to the current load information through the voltage control loop or the current control loop specifically includes:

if the current load information of the phase-controlled rectifying circuit does not meet the current limiting condition, outputting the current voltage regulating quantity corresponding to the current load information through a voltage control loop;

and if the current load information of the phase-controlled rectifying circuit meets the current limiting condition, outputting the current voltage regulating quantity corresponding to the current load information through a current control loop.

Preferably, the current load information of the phase-controlled rectifying circuit comprises a current voltage feedback value, a current voltage set value, a current feedback value and a current set value of the phase-controlled rectifying circuit;

correspondingly, the process of judging whether the current load information of the phase-controlled rectifying circuit meets the current limiting condition specifically comprises the following steps:

outputting a current first voltage regulating quantity corresponding to a current voltage feedback value and a current voltage given value through the voltage control loop;

outputting a current second voltage regulating quantity corresponding to a current feedback value and a current given value through the current control loop;

if the current first voltage regulating quantity is larger than the current second voltage regulating quantity, judging that the current load information of the phase control rectifying circuit meets the current limiting condition;

and if the current first voltage regulating quantity is smaller than or equal to the current second voltage regulating quantity, judging that the current load information of the phase-controlled rectifying circuit does not meet the current limiting condition.

Preferably, the current load information of the phase-controlled rectifying circuit further includes a current voltage actual value of the phase-controlled rectifying circuit;

correspondingly, after the current load information of the phase-controlled rectifier circuit is obtained, and before the current voltage adjustment amount corresponding to the current load information is output through the voltage control loop or the current control loop, the control method of the phase-controlled rectifier circuit further includes:

judging whether the actual value of the current voltage is greater than the given value of the current voltage or not;

and if so, performing a de-integration operation on the voltage control loop.

Preferably, the phase-controlled rectifier circuit control method further includes:

when the current load information of the phase-controlled rectifying circuit meets the current limiting condition, controlling the current second voltage regulating quantity output by the current control loop to be smaller than or equal to the sum of a preset reference quantity and the current first voltage regulating quantity output by the voltage loop;

and when the current load information of the phase-controlled rectifying circuit does not meet the current limiting condition, controlling the current second voltage regulating quantity output by the current control loop to be smaller than or equal to the maximum output limiting value of the current control loop.

Preferably, the process of obtaining the control angle according to the current voltage adjustment amount specifically includes:

obtaining a control angle cosine value according to the current voltage regulating quantity and the cosine relational expression;

obtaining a control angle according to the cosine value of the control angle;

wherein the cosine relation isα is the control angle, U_outIs the current voltage actual value, U, of the phase-controlled rectifier circuit_sFor the current voltage adjustment, K is the transformation coefficient, U_iIs the input mains voltage.

Preferably, after obtaining the cosine value of the control angle according to the current voltage adjustment amount and the cosine relation, and before obtaining the control angle according to the cosine value of the control angle, the control method of the phase-controlled rectifier circuit further includes:

performing cosine value domain amplitude limiting operation on the control angle cosine value to obtain a target cosine value, wherein the range of the target cosine value is [ -1, +1 ];

correspondingly, the process of obtaining the control angle through the cosine value of the control angle specifically includes:

and obtaining a control angle according to the target cosine value.

In order to solve the above technical problem, the present application further provides a phase-control rectifier circuit control device, including:

the acquisition module is used for acquiring the current load information of the phase control rectification circuit;

the adjusting module is used for outputting the current voltage adjusting quantity corresponding to the current load information through the voltage control loop or the current control loop;

and the control module is used for obtaining a control angle according to the current voltage regulating quantity and controlling the conduction or the disconnection of a thyristor of the phase-controlled rectifying circuit through the control angle.

In order to solve the above technical problem, the present application further provides an electronic device, including:

a memory for storing a computer program;

a processor for implementing the steps of the phase-controlled rectifier circuit control method as claimed in any one of the preceding claims when executing the computer program.

To solve the above technical problem, the present application further provides a computer-readable storage medium having a computer program stored thereon, the computer program, when executed by a processor, implementing the steps of the phase-controlled rectifier circuit control method according to any one of the above.

The application provides a phase control rectifier circuit control method, calculate simultaneously through voltage ring and electric current ring monocycle, the mode of competing the output is controlled the phase control rectifier circuit, the loop that the rectifier circuit controlled is controlled to controlling at present to the phase control is selected according to the current load information of phase control rectifier circuit promptly, wherein, play the steady voltage effect through the voltage ring, the electric current ring plays the current limiting action, two loops can be according to the seamless switching of the current load information of the rectifier circuit of controlling mutually, both can realize steady voltage and current-limiting's purpose, dynamic index is good when can guaranteeing the load sudden change, adopt digital control to avoid analog control's drawback simultaneously, the cost is saved, and steady voltage and current-limiting point accessible software are nimble to be controlled. The application also provides a control device of the phase control rectification circuit, electronic equipment and a computer readable storage medium, and the control device has the same beneficial effects as the control method of the phase control rectification circuit.

Drawings

In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.

Fig. 1 is a working waveform diagram of a single-phase full-bridge phase-controlled rectifier circuit with a resistive load according to the present application;

FIG. 2 is a schematic diagram of a phase-controlled rectification control loop provided herein;

fig. 3 is a flowchart illustrating steps of a control method for a phase-controlled rectifier circuit according to the present application;

fig. 4 is a schematic structural diagram of a control device of a phase-controlled rectifier circuit according to the present application.

Detailed Description

The core of the application is to provide a control method and device of a phase-control rectification circuit, an electronic device and a computer readable storage medium, which can realize the purposes of voltage stabilization and current limitation, can ensure good dynamic indexes when the load suddenly changes, avoids the defect of analog control by adopting digital control, saves the cost, and can flexibly control a voltage stabilization point and a current limitation point through software.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

To facilitate understanding of a control method of a phase-controlled rectifier circuit provided in the present application, a phase-controlled rectifier circuit is described below, and referring to fig. 1, fig. 1 is a waveform diagram of an operating resistive load of a single-phase full-bridge phase-controlled rectifier circuit provided in an embodiment of the present application, assuming that an input voltage is:

the average value U of the rectified output voltage_dComprises the following steps:

when α is equal to 0 °, U_d＝0.9U_i；

When α is 180 °, U_d＝0；

With resistive load, the phase shift range of α is 0-180 deg..

Therefore, the output voltage can be controlled by controlling the angle α, so that the purposes of outputting voltage stabilization, current limiting and the like are achieved.

To further understand the scheme proposed in the present application, a phase-controlled rectification control loop applicable to the phase-controlled rectification circuit control method of the present application is introduced, referring to fig. 2, fig. 2 is a schematic diagram of a phase-controlled rectification control loop provided in an embodiment of the present application, and a conduction phase angle of a thyristor SCR is controlled by using a mode of simultaneous calculation and competitive output of a voltage outer loop and a current inner loop. The phase-controlled rectifier circuit is controlled by the voltage control loop and the current control loop in the phase-controlled rectifier control loop, voltage-stabilized output of the phase-controlled rectifier circuit can be achieved by adjusting the given voltage control loop, and current-limited output of the phase-controlled rectifier circuit can be achieved by limiting the given current control loop.

The following describes a control method of a phase-controlled rectifier circuit provided in the present application in detail.

Referring to fig. 3, fig. 3 is a flowchart illustrating steps of a control method of a phase-controlled rectifier circuit according to the present application, the control method of the phase-controlled rectifier circuit includes:

s101: acquiring current load information of a phase-controlled rectifying circuit;

in particular, the required voltage regulation amount is not considered when the phase control rectification circuit is under different loadsMeanwhile, when the load is small, the current is below the current limiting point under the full load, and the voltage stabilization is mainly realized; when the load is more than full load, the current is large, and the current is still stabilized at a voltage stabilizing point, the current limitation cannot be realized, and the voltage needs to be reduced so as to limit the current at the current limiting point. Based on this, it is necessary to acquire current load information of the phase-controlled rectifier circuit. It is understood that the load state (including light load, full load, heavy load, etc.) of the phase-controlled rectifier circuit can be determined according to the current voltage actual value U of the output of the phase-controlled rectifier circuit_outActual value of the present current I_outWhen the load is small, the actual value I of the output current of the phase-controlled rectifying circuit_outLess than the given value of the current I_refWhen the load is continuously increased, the actual value I of the output current of the phase-controlled rectifying circuit_outCan reach the current given value I_ref. The current load information in this step includes, but is not limited to, a current voltage feedback value, a current voltage set value, a current feedback value, and a current set value of the phase-controlled rectifier circuit. Wherein the current voltage feedback value is the current voltage actual value U in FIG. 2_outThe current feedback value, i.e. the current actual value I in fig. 2, is the voltage value obtained by calculating the RMS effective value_outThe current value obtained by RMS effective value calculation is the current voltage given value, namely U in figure 2_refCurrent setpoint i.e. I in fig. 2_ref。

S102: outputting a current voltage regulating quantity corresponding to current load information through a voltage control loop or a current control loop;

specifically, the control loop currently controlling the phase-controlled rectifying circuit can be determined according to the current load information. If the current load is smaller, the current actual value I_outCurrent set value I not reaching the setting_refWhen the system is in a constant voltage mode, the voltage control loop is activated. When the load is continuously increased, the current actual value I_outReaching the set current set value I_refThe current control loop is active. For example, assuming that the output rating of the system is 35V, 10A, i.e. the output voltage is 35V, the output current is 10A at the maximum, and when the present load is small, it is possible to do soRealize constant voltage 35V output, control phased rectifier circuit through the voltage control ring promptly, realize steady voltage output, but because current load is less, output current is very little, less than 10A, when load crescent, output current crescent to 10A, if continue to increase the load this moment, and the electric current need restrict to 10A, then the voltage can't realize continuing steady voltage, this moment, realize that electric current 10A is unchangeable through reducing voltage, control phased rectifier circuit through the current control ring promptly, realize the current-limiting output.

As a preferred embodiment, before executing this step, an operation of determining whether the present load information of the phase-controlled rectifier circuit satisfies the current limiting condition, that is, determining the present actual current value I may be further included_outWhether the current set value I is reached_ref. If not, adjusting the current voltage feedback value and the current voltage given value by a voltage control loop PI to obtain an adjustment quantity as a current voltage adjustment quantity; and if so, taking the current feedback value and the current given value as the current voltage regulating quantity, wherein the current voltage regulating quantity is used for adjusting the conduction angle of a thyristor of the phase-control rectification circuit. In this embodiment, the voltage control loop can realize voltage-stabilizing output, the current control loop can realize current-limiting output, and the two control loops can be seamlessly switched according to the current load information, so as to ensure good dynamic indexes when the load suddenly changes.

S103: and obtaining a control angle according to the current voltage regulating quantity, and controlling the conduction or the disconnection of a thyristor of the phase control rectification circuit through the control angle.

In particular, reference U_d＝0.9U_i(1+ cos α)/2, can be obtainedK is transform coefficient, K is 4.5, α is control angle, U_outActual value of the current voltage, U, being the output of the phase-controlled rectifier circuit_iTo input the mains voltage, the current voltage regulation has to be taken into account, and therefore,U_sbefore performing the inverse cosine operation, the embodiment further includes performing value range amplitude limitation on the cosine value cos α of the control angle to obtain a target cosine value, where the target cosine value range is [ -1, 1]So as to perform an inverse cosine operation to obtain a control angle.

This embodiment calculates simultaneously through voltage ring and current ring monocycle, the mode of competing the output is controlled phase control rectifier circuit, the loop that current control rectifier circuit controlled is carried out to phase control according to phase control rectifier circuit's current load information selection promptly, wherein, play the steady voltage effect through the voltage ring, the current ring plays the current limiting action, two loops can be according to phase control rectifier circuit's current load information seamless switch, both can realize steady voltage and current-limiting's purpose, dynamic index is good when can guaranteeing the load sudden change again, adopt digital control to avoid analog control's drawback simultaneously, the cost is saved, and steady voltage and current-limiting point accessible software are nimble to be controlled.

On the basis of the above-described embodiment:

as a preferred embodiment, the current load information of the phase-controlled rectifier circuit includes a current voltage feedback value, a current voltage given value, a current feedback value and a current given value of the phase-controlled rectifier circuit;

correspondingly, the process of judging whether the current load information of the phase-controlled rectifying circuit meets the current limiting condition specifically comprises the following steps:

outputting a current first voltage regulating quantity corresponding to a current voltage feedback value and a current voltage given value through a voltage control loop;

outputting a current second voltage regulating quantity corresponding to the current feedback value and the current given value through a current control loop;

if the current first voltage regulating quantity is larger than the current second voltage regulating quantity, judging that the current load information of the phase control rectifying circuit meets the current limiting condition;

and if the current first voltage regulating quantity is smaller than or equal to the current second voltage regulating quantity, judging that the current load information of the phase-controlled rectifying circuit does not meet the current limiting condition.

It will be appreciated that the current control loop and the voltage control loop each have respective loop coefficients, such as integral value, proportional value, maximum amplitude limit value, minimum amplitude limit value, etc.

If the current given value is 10A, namely the current limit point is 10A, and the current feedback value is 5A, the actual load is small, at this time, the current feedback value of the current control loop cannot reach the current given value, the loop can integrate all the time until the maximum amplitude limit value is reached, namely when the load is small and the current feedback value does not reach the current given value, the output of the current control loop is large. When the load is continuously increased and the current feedback value is increased to the current given value, the output of the voltage control loop is continuously increased, the integral is gradually saturated to the maximum amplitude limit of the loop, namely when the current feedback value reaches the current given value, the output of the voltage control loop is larger. Therefore, whether the current limiting condition is met can be determined according to the comparison result of the first voltage regulating quantity output by the voltage control loop and the second voltage regulating quantity output by the current control loop, and if the current first voltage regulating quantity is larger than the current second voltage regulating quantity, the current limiting condition is judged to be met; and if the first voltage regulating quantity is less than or equal to the current second voltage regulating quantity, judging that the current limiting condition is not met. Based on this, it can also be understood at S102 that the smaller of the voltage adjustment amount output by the voltage control loop and the voltage adjustment amount output by the current control loop is selected as the current voltage adjustment amount for adjusting the control angle.

As a preferred embodiment, the current load information of the phase-controlled rectifier circuit further includes a current voltage actual value of the phase-controlled rectifier circuit;

correspondingly, after the current load information of the phase-controlled rectifier circuit is obtained, before the current voltage adjustment amount corresponding to the current load information is output through the voltage control loop or the current control loop, the control method of the phase-controlled rectifier circuit further comprises the following steps:

judging whether the actual value of the current voltage is greater than the given value of the current voltage or not;

if yes, the voltage control loop is subjected to the de-integration operation.

In particular, when the system goes from full load to empty, i.e. load dump is performedAnd the system is switched to work from the current control loop to the voltage control loop. Because the integral of the voltage control loop is large, the PI loop is required to be adjusted to be small, and the output voltage can be overshot in the adjusting process, so that the integral removing operation of the voltage control loop is adopted by the embodiment to accelerate the integral removing operation of the voltage control loop, and the voltage overshoot value is reduced. Specifically, when the actual value of the current voltage is greater than the given value of the current voltage, the voltage control loop is subjected to de-integration operation. Assuming that the rated output is 35V, that is, the given value of the current voltage is 35V, and the voltage needs to be stabilized by 35V, but the actual value of the current voltage reaches 38V and exceeds the voltage value needing to be stabilized, then the de-integration operation is needed, specifically, the de-integration operation is to reduce the original integral value Ti of the voltage control loop, so that the current integral value Ti can be reduced₁＝k×Ti，0＜k＜1。

As a preferred embodiment, the phase-controlled rectifier circuit control method further includes:

when the current load information of the phase-controlled rectifying circuit meets the current limiting condition, controlling the current second voltage regulating quantity output by the current control loop to be smaller than or equal to the sum of a preset reference quantity and the current first voltage regulating quantity output by the voltage loop;

and when the current load information of the phase-controlled rectifying circuit does not meet the current limiting condition, controlling the current second voltage regulating quantity output by the current control loop to be smaller than or equal to the maximum output amplitude limit value of the current control loop.

Specifically, when the system is loaded suddenly from no load to full load, the system is switched from the voltage control loop to the current control loop. Because the integral of the current control loop is large, the integral needs to be reduced by depending on a PI loop, and the output current can be over-regulated and is larger than a current limiting point in the regulation process, therefore, the current is limited by adopting a mode of limiting the output of the current control loop in the embodiment. The preset reference amount can be set according to the actual engineering requirement, and the application is not limited herein.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a phase-controlled rectifier circuit control device provided in the present application, the phase-controlled rectifier circuit control device includes:

the acquisition module 1 is used for acquiring current load information of the phase control rectification circuit;

the adjusting module 2 is used for outputting a current voltage adjusting quantity corresponding to current load information through a voltage control loop or a current control loop;

and the control module 3 is used for obtaining a control angle according to the current voltage regulating quantity and controlling the conduction or the disconnection of a thyristor of the phase control rectification circuit through the control angle.

This embodiment calculates simultaneously through voltage ring and current ring monocycle, the mode of competing the output is controlled phase control rectifier circuit, the loop that current control rectifier circuit controlled is carried out to phase control according to phase control rectifier circuit's current load information selection promptly, wherein, play the steady voltage effect through the voltage ring, the current ring plays the current limiting action, two loops can be according to phase control rectifier circuit's current load information seamless switch, both can realize steady voltage and current-limiting's purpose, dynamic index is good when can guaranteeing the load sudden change again, adopt digital control to avoid analog control's drawback simultaneously, the cost is saved, and steady voltage and current-limiting point accessible software are nimble to be controlled.

As a preferred embodiment, the phase control rectifier circuit control apparatus further includes:

the first judgment module is used for judging whether the current load information of the phase control rectification circuit meets the current limiting condition;

correspondingly, the adjusting module 2 is specifically configured to:

if the current load information of the phase-controlled rectifying circuit does not meet the current limiting condition, outputting the current voltage regulating quantity corresponding to the current load information through a voltage control loop;

and if the current load information of the phase-controlled rectifying circuit meets the current limiting condition, outputting the current voltage regulating quantity corresponding to the current load information through the current control loop.

As a preferred embodiment, the current load information of the phase-controlled rectifier circuit includes a current voltage feedback value, a current voltage given value, a current feedback value and a current given value of the phase-controlled rectifier circuit;

correspondingly, the first judging module specifically comprises:

the first output unit is used for outputting a current first voltage regulating quantity corresponding to a current voltage feedback value and a current voltage given value through a voltage control loop;

the second output unit is used for outputting a current second voltage regulating quantity corresponding to the current feedback value and the current given value through the current control loop;

and the judging unit is used for judging that the current load information of the phase-control rectifying circuit meets the current limiting condition when the current first voltage regulating quantity is larger than the current second voltage regulating quantity, and is also used for judging that the current load information of the phase-control rectifying circuit does not meet the current limiting condition when the current first voltage regulating quantity is smaller than or equal to the current second voltage regulating quantity.

As a preferred embodiment, the current load information of the phase-controlled rectifier circuit further includes a current voltage actual value of the phase-controlled rectifier circuit;

correspondingly, the phase-controlled rectifier circuit control device further comprises:

the second judgment module is used for judging whether the actual value of the current voltage is greater than the given value of the current voltage or not, and if so, the first execution module is triggered;

the first execution module is used for executing the inverse integral operation on the voltage control loop.

As a preferred embodiment, the phase control rectifier circuit control apparatus further includes:

the second execution module is used for controlling the current second voltage regulation quantity output by the current control loop to be smaller than or equal to the sum of a preset reference quantity and the current first voltage regulation quantity output by the voltage loop when the current load information of the phase-controlled rectifying circuit meets the current limiting condition; and the current control circuit is also used for controlling the current second voltage regulating quantity output by the current control loop to be smaller than or equal to the maximum output amplitude limit value of the current control loop when the current load information of the phase-controlled rectifying circuit does not meet the current limit condition.

As a preferred embodiment, the control module 3 specifically includes:

the first calculation unit is used for obtaining a control angle cosine value according to the current voltage regulating quantity and the cosine relational expression;

the second calculation unit is used for obtaining a control angle through a control angle cosine value;

the control unit is used for controlling the conduction or the disconnection of a thyristor of the phase-controlled rectifying circuit through a control angle;

wherein the cosine relation isα is control angle, U_outFor the actual value of the current voltage of the phase-controlled rectifier circuit, U_sFor the current voltage adjustment, K is the transformation coefficient, U_iIs the input mains voltage.

As a preferred embodiment, the control module 3 further comprises:

the amplitude limiting unit is used for carrying out cosine value range amplitude limiting operation on the control angle cosine value to obtain a target cosine value, and the range of the target cosine value is [ -1, +1 ];

correspondingly, the second computing unit is specifically configured to:

and obtaining a control angle through the target cosine value.

In another aspect, the present application further provides an electronic device, including:

a memory for storing a computer program;

a processor for implementing the steps of the phase-controlled rectifier circuit control method as described in any one of the above embodiments when executing a computer program.

For an introduction of an electronic device provided in the present application, please refer to the above embodiments, which are not described herein again.

The electronic equipment provided by the application has the same beneficial effects as the phase control rectification circuit control method.

In another aspect, the present application further provides a computer-readable storage medium, on which a computer program is stored, the computer program, when executed by a processor, implementing the steps of the phase-controlled rectifier circuit control method as described in any one of the above embodiments.

For the introduction of a computer-readable storage medium provided in the present application, please refer to the above embodiments, which are not described herein again.

The computer-readable storage medium provided by the application has the same beneficial effects as the control method of the phase-controlled rectifying circuit.

It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.