阅读说明：本技术 一种模组化微波电源 (Modular microwave power supply ) 是由 高龙 王炜 印长豹 于 2019-08-29 设计创作，主要内容包括：本发明涉及微波电源,具体涉及一种模组化微波电源,包括输入电源,输入电源与用于进行调压的第一交流变压器相连,第一交流变压器与用于将交流电变为直流电的第一整流模块相连,第一整流模块与用于进行滤波的滤波模块相连,滤波模块与用于将滤波后的直流电变为交流电的逆变器相连,逆变器与用于进行调压的第二交流变压器相连,第二交流变压器与用于将交流电变为直流电的第二整流模块相连,第二整流模块将直流电输出给磁控管；本发明提供的技术方案能够有效克服现有技术所存在的不能对输出功率进行有效校准、所需电子元件较多、产生的谐波对电网污染严重的缺陷。(The invention relates to a microwave power supply, in particular to a modularized microwave power supply, which comprises an input power supply, wherein the input power supply is connected with a first alternating current transformer for regulating voltage, the first alternating current transformer is connected with a first rectifying module for converting alternating current into direct current, the first rectifying module is connected with a filtering module for filtering, the filtering module is connected with an inverter for converting the filtered direct current into the alternating current, the inverter is connected with a second alternating current transformer for regulating voltage, the second alternating current transformer is connected with a second rectifying module for converting the alternating current into the direct current, and the second rectifying module outputs the direct current to a magnetron; the technical scheme provided by the invention can effectively overcome the defects that the output power cannot be effectively calibrated, more electronic elements are required, and the generated harmonic wave seriously pollutes the power grid in the prior art.)

1. A modular microwave power supply, includes input power supply, its characterized in that: the input power supply is connected with a first alternating current transformer for regulating voltage, the first alternating current transformer is connected with a first rectifying module for converting alternating current into direct current, the first rectifying module is connected with a filtering module for filtering, the filtering module is connected with an inverter for converting the filtered direct current into the alternating current, the inverter is connected with a second alternating current transformer for regulating voltage, the second alternating current transformer is connected with a second rectifying module for converting the alternating current into the direct current, and the second rectifying module outputs the direct current to a magnetron;

the magnetron is connected with a power calculation and compensation unit, the power calculation and compensation unit comprises a target power input module which is connected with the magnetron and is used for inputting the rated target power of the magnetron, an output power detection unit which is connected with the magnetron and is used for detecting the actual output power of the magnetron, a compensation value calculation module which is connected with the target power input module and the output power detection unit and is used for calculating the difference value between the actual output power of the magnetron and the rated target power and taking the difference value as a power compensation value, and a power compensation module which is connected with the compensation value calculation module and is used for inputting the power compensation value into the magnetron.

2. A modular microwave power supply as in claim 1, wherein: the first rectification module adopts any one of a full-wave rectification circuit, a synchronous rectification circuit and a multi-pulse rectification circuit.

3. A modular microwave power supply as in claim 2, wherein: the first rectifying module comprises a PFC circuit used for improving the power factor.

4. A modular microwave power supply as in claim 1, wherein: the filtering module adopts any one of a capacitor filtering circuit, an RC filtering circuit and an LC filtering circuit.

5. A modular microwave power supply as in claim 1, wherein: the output power detection unit comprises an output power acquisition module and an output power calculation module, wherein the output power acquisition module is used for acquiring all powers output by the magnetron within a preset period of time under the rated target power, and the output power calculation module is used for calculating the average value of all powers acquired by the output power acquisition module and taking the average value as the actual output power of the magnetron.

6. A modular microwave power supply as in claim 1, wherein: the device also comprises a detection module which is connected with the compensation value calculation module and is used for detecting whether the power compensation value is 0 or not.

7. A modular microwave power supply as in claim 6, wherein: when the detection module detects that the power compensation value is not 0, the detection module controls the output power detection unit to detect the actual output power of the magnetron again, and controls the compensation value calculation module to generate a new power compensation value.

Technical Field

The invention relates to a microwave power supply, in particular to a modularized microwave power supply.

Background

The microwave is an electromagnetic wave with the frequency of 300 MHz-3000 GHz and the wavelength of 0.1 mm-1 m, has the characteristics of high penetrability, small thermal inertia, uniform heating, high thermal efficiency and the like, and is widely applied to the fields of microwave heating and the like. The complete microwave system mainly comprises a microwave power supply, a magnetron, a waveguide element, a sensor, a controller, a load and the like; the microwave power supply and the magnetron are the core of the microwave system, and the performance of the microwave power supply and the performance of the magnetron directly influence the performance of the microwave system.

The microwave source, the microwave power source and the microwave power source are input through three-phase alternating current, the rectified alternating current is boosted to high voltage through a transformer, the high voltage electrically excites the magnetron to generate electrons at high temperature, and stable microwave oscillation is formed in the magnetron to generate microwave energy. Microwave sources, microwave power sources and microwave power sources are widely applied to the fields of radar systems, food industry, wood processing, rubber industry and the like.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects in the prior art, the invention provides a modular microwave power supply which can effectively overcome the defects in the prior art that the output power cannot be effectively calibrated, more electronic elements are required, and the generated harmonic wave seriously pollutes a power grid.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

a modularized microwave power supply comprises an input power supply, wherein the input power supply is connected with a first alternating current transformer for regulating voltage, the first alternating current transformer is connected with a first rectifying module for converting alternating current into direct current, the first rectifying module is connected with a filtering module for filtering, the filtering module is connected with an inverter for converting the filtered direct current into the alternating current, the inverter is connected with a second alternating current transformer for regulating voltage, the second alternating current transformer is connected with a second rectifying module for converting the alternating current into the direct current, and the second rectifying module outputs the direct current to a magnetron;

the magnetron is connected with a power calculation and compensation unit, the power calculation and compensation unit comprises a target power input module which is connected with the magnetron and is used for inputting the rated target power of the magnetron, an output power detection unit which is connected with the magnetron and is used for detecting the actual output power of the magnetron, a compensation value calculation module which is connected with the target power input module and the output power detection unit and is used for calculating the difference value between the actual output power of the magnetron and the rated target power and taking the difference value as a power compensation value, and a power compensation module which is connected with the compensation value calculation module and is used for inputting the power compensation value into the magnetron.

Preferably, the first rectification module adopts any one of a full-wave rectification circuit, a synchronous rectification circuit and a multi-pulse rectification circuit.

Preferably, the first rectifying module includes a PFC circuit therein for improving a power factor.

Preferably, the filtering module adopts any one of a capacitance filtering circuit, an RC filtering circuit and an LC filtering circuit.

Preferably, the output power detection unit includes an output power obtaining module for obtaining all powers output by the magnetron within a preset period of time under a rated target power, and an output power calculating module for calculating an average value of all powers obtained by the output power obtaining module and taking the average value as an actual output power of the magnetron.

Preferably, the power compensation device further comprises a detection module connected to the compensation value calculation module for detecting whether the power compensation value is 0.

Preferably, when the detection module detects that the power compensation value is not 0, the detection module controls the output power detection unit to detect the actual output power of the magnetron again, and controls the compensation value calculation module to generate a new power compensation value.

(III) advantageous effects

Compared with the prior art, the modularized microwave power supply provided by the invention has the following beneficial effects:

1. the first alternating current transformer is used for regulating the voltage of an input power supply, the first rectifying module is used for converting alternating current into direct current, the filtering module is used for filtering, the inverter is used for converting the filtered direct current into alternating current, the second alternating current transformer is used for regulating the voltage, the second rectifying module is used for converting the alternating current into the direct current, and the direct current is uniformly output to the magnetron by the second rectifying module, so that the uniform power supply of the magnetron is realized, the use of electronic elements is reduced, and the production cost is reduced;

2. the first rectifying module adopts any one of a full-wave rectifying circuit, a synchronous rectifying circuit and a multi-pulse rectifying circuit, and the first rectifying module comprises a PFC circuit for improving the power factor, so that the harmonic waves of a power grid and power output ripples are reduced, the power factor is improved, the quality of output direct current is improved, and the pollution to the power grid is reduced;

3. the target power input module inputs the rated target power of the magnetron, the output power detection unit detects the actual output power of the magnetron, the compensation value calculation module calculates the difference value between the actual output power of the magnetron and the rated target power and takes the difference value as a power compensation value, and the power compensation module inputs the power compensation value into the magnetron, so that the effective compensation of the output power of the microwave power supply is realized, and the precision of the output power of the microwave power supply is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic diagram of the system of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and 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 invention.

A modularized microwave power supply comprises an input power supply, wherein the input power supply is connected with a first alternating current transformer for regulating voltage, the first alternating current transformer is connected with a first rectifying module for converting alternating current into direct current, the first rectifying module is connected with a filtering module for filtering, the filtering module is connected with an inverter for converting the filtered direct current into the alternating current, the inverter is connected with a second alternating current transformer for regulating voltage, the second alternating current transformer is connected with a second rectifying module for converting the alternating current into the direct current, and the second rectifying module outputs the direct current to a magnetron;

the magnetron is connected with a power calculation and compensation unit, the power calculation and compensation unit comprises a target power input module which is connected with the magnetron and is used for inputting the rated target power of the magnetron, an output power detection unit which is connected with the magnetron and is used for detecting the actual output power of the magnetron, a compensation value calculation module which is connected with the target power input module and the output power detection unit and is used for calculating the difference value between the actual output power of the magnetron and the rated target power and taking the difference value as a power compensation value, and a power compensation module which is connected with the compensation value calculation module and is used for inputting the power compensation value into the magnetron.

The first rectification module adopts any one of a full-wave rectification circuit, a synchronous rectification circuit and a multi-pulse rectification circuit.

The first rectifying module comprises a PFC circuit used for improving the power factor.

The filtering module adopts any one of a capacitance filtering circuit, an RC filtering circuit and an LC filtering circuit.

The output power detection unit comprises an output power acquisition module and an output power calculation module, wherein the output power acquisition module is used for acquiring all powers output by the magnetron within a preset period of time under the rated target power, and the output power calculation module is used for calculating the average value of all powers acquired by the output power acquisition module and taking the average value as the actual output power of the magnetron.

The device also comprises a detection module which is connected with the compensation value calculation module and is used for detecting whether the power compensation value is 0 or not.

When the detection module detects that the power compensation value is not 0, the detection module controls the output power detection unit to detect the actual output power of the magnetron again, and controls the compensation value calculation module to generate a new power compensation value.

The first alternating current transformer is used for regulating voltage of an input power supply, the first rectifying module is used for converting alternating current into direct current, the filtering module is used for filtering, the inverter is used for converting the filtered direct current into alternating current, the second alternating current transformer is used for regulating voltage, the second rectifying module is used for converting the alternating current into direct current, and the direct current is uniformly output to the magnetron by the second rectifying module, so that uniform power supply of the magnetron is realized, the use of electronic elements is reduced, and the production cost is reduced.

The first rectifying module adopts any one of a full-wave rectifying circuit, a synchronous rectifying circuit and a multi-pulse rectifying circuit, and the first rectifying module comprises a PFC circuit for improving the power factor, so that the harmonic waves of a power grid and power output ripples are reduced, the power factor is also improved, the quality of output direct current is improved, and the pollution to the power grid is reduced.

The target power input module inputs the rated target power of the magnetron, the output power detection unit detects the actual output power of the magnetron, the compensation value calculation module calculates the difference value between the actual output power of the magnetron and the rated target power and takes the difference value as a power compensation value, and the power compensation module inputs the power compensation value into the magnetron, so that the effective compensation of the output power of the microwave power supply is realized, and the precision of the output power of the microwave power supply is improved.

The output power detection unit comprises an output power acquisition module and an output power calculation module, wherein the output power acquisition module is used for acquiring all powers output by the magnetron within a preset period of time under the rated target power, and the output power calculation module is used for calculating the average value of all powers acquired by the output power acquisition module and taking the average value as the actual output power of the magnetron.

The device also comprises a detection module which is connected with the compensation value calculation module and is used for detecting whether the power compensation value is 0 or not. When the detection module detects that the power compensation value is not 0, the detection module controls the output power detection unit to detect the actual output power of the magnetron again, and controls the compensation value calculation module to generate a new power compensation value.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.