阅读说明：本技术 一种ups旁路调压系统 (UPS bypass voltage regulation system ) 是由 徐兴国 蔡国忠 张峰 黄旭鹏 王庆林 张家宽 陈明光 周扬 于 2021-08-24 设计创作，主要内容包括：本发明公开了一种UPS旁路调压系统。本系统包括旁路启闭开关、隔离变压器、升压变压调节器、降压变压调节器、自调节保护系统和绕组联动调节开关,本发明增设可控硅调节控制组、测量检查机构与升压变压调节器、降压变压调节器连接组合,结合自调节保护系统形成旁路调压系统,隔离变压器设置连接在输入绕组与输出绕组之间,同时在旁路调压系统的输出端设有电流互感器和绕组联动调节开关。本发明增益效果是：本发明的旁路调压系统能够自动保持输出电压的稳定且电压调节平稳,能够保证供电可靠稳定。本发明具有调控灵活性高,可接入的负载容量大、电压调控范围宽、调节能量损耗低、输出电压幅值精度高、无波形畸变等优点。(The invention discloses a UPS bypass voltage regulating system. The system comprises a bypass on-off switch, an isolation transformer, a boost variable pressure regulator, a buck variable pressure regulator, a self-regulation protection system and a winding linkage regulation switch. The gain effect of the invention is: the bypass voltage regulating system can automatically keep the stability of output voltage and the stable voltage regulation, and can ensure the reliable and stable power supply. The invention has the advantages of high regulation flexibility, large accessible load capacity, wide voltage regulation range, low energy loss, high output voltage amplitude precision, no waveform distortion and the like.)

1. A UPS bypass voltage regulation system is characterized in that the bypass voltage regulation system comprises a bypass on-off switch, a boost voltage regulator, a buck voltage regulator, an isolation transformer, a self-regulation protection system, a controlled silicon regulation control group, a measurement inspection mechanism and a winding linkage regulation switch, the voltage-reducing variable voltage regulator is arranged at the input end of the system, the voltage-increasing variable voltage regulator is arranged at the output end of the system, the winding adjusting end of the voltage-reducing variable voltage regulator is connected with the winding adjusting end of the voltage-increasing variable voltage regulator and the adjusting part of the winding linkage adjusting switch, the bypass on-off switch is arranged between the input live wire and the output live wire, the bypass on-off switch is connected with the output end of the bypass voltage regulating system, the isolation transformer is arranged and connected between the winding of the step-down voltage-variable regulator and the winding of the step-up voltage-variable regulator, the self-adjusting protection system is arranged between the silicon controlled rectifier adjusting control group and the measuring and checking mechanism.

2. The UPS bypass voltage regulating system according to claim 1, wherein the silicon controlled rectifier adjusting control group comprises a first silicon controlled rectifier, a second silicon controlled rectifier, a third silicon controlled rectifier, a fourth silicon controlled rectifier and a fifth silicon controlled rectifier, the first silicon controlled rectifier, the second silicon controlled rectifier, the third silicon controlled rectifier and the fourth silicon controlled rectifier are connected in series, the first silicon controlled rectifier and a winding adjusting end of the voltage-reducing voltage-changing voltage regulator are arranged in parallel, the third silicon controlled rectifier and a winding adjusting end of the voltage-increasing voltage-changing voltage regulator are arranged in parallel, and the fifth silicon controlled rectifier and the first silicon controlled rectifier, the second silicon controlled rectifier, the third silicon controlled rectifier and a passage formed by the fourth silicon controlled rectifier are arranged in series.

3. The UPS bypass voltage regulation system of claim 1 wherein the measurement inspection mechanism comprises a protection measurement inspection part, a first winding measurement inspection part and a second winding measurement inspection part, the protection measurement inspection part is connected in series with the front end of a fifth silicon controlled rectifier, the fifth silicon controlled rectifier is connected with a system zero line, the first winding measurement inspection part is connected in parallel with the first silicon controlled rectifier, and the second winding measurement inspection part is connected in parallel with the third silicon controlled rectifier.

4. The UPS bypass voltage regulation system according to claim 1, wherein the self-regulation protection system is arranged between the fifth controllable silicon and the protection measurement inspection part, and the self-regulation protection system internally comprises a MCU control circuit, an overvoltage and undervoltage detection system, a frequency abnormality detection system and a machine fault detection alarm system.

5. The UPS bypass voltage regulation system of claim 1 wherein the UPS bypass voltage regulation system comprises four self-regulated gears, the self-regulated gears comprising a large step-up gear, a small step-up gear, a step-down gear, and a pass-through gear.

6. The UPS bypass voltage regulation system of claim 5 wherein when the UPS bypass voltage regulation system is in the small step-up gear, the winding length of the winding access system end of the step-up voltage regulator is greater than the winding length of the winding access system end of the step-down voltage regulator.

7. The UPS bypass voltage regulation system of claim 1 wherein a current transformer is provided at the voltage regulation output of the bypass voltage regulation system, the current transformer being positioned between the boost voltage regulator and the winding-linked regulating switch, the current transformer suppressing the input current.

8. The UPS bypass voltage regulation system of claim 1 wherein the bypass on/off switch comprises a voltage regulation off gear and an automatic voltage regulation on gear.

9. The UPS bypass voltage regulation system of claim 1 wherein a power input control switch is provided at an input of the UPS bypass voltage regulation system, the power input control switch controlling the rapid connection and disconnection of the bypass voltage regulation system.

10. The UPS bypass voltage regulation system of claim 1, wherein the UPS bypass voltage regulation system is connected with a display system and a communication system, the display system is connected with a display to display the detailed working state of the UPS bypass voltage regulation system, and the communication system is connected with a communication network to perform real-time communication externally.

Technical Field

The invention relates to the technical field of UPS (uninterrupted power supply) matching systems, in particular to a UPS bypass voltage regulating system.

Background

A UPS (universal Power System/universal Power Supply), i.e., an ac Uninterruptible Power Supply, is a System device that connects a battery (mostly a lead-acid maintenance-free battery) with a host, and converts direct current into commercial Power through a module circuit such as a host inverter. The power supply device is mainly used for providing stable and uninterrupted power supply for a single computer, a computer network system or other power electronic equipment such as an electromagnetic valve, a pressure transmitter and the like.

When the commercial power input is normal, the UPS supplies the commercial power to the load for use after stabilizing the voltage, and the UPS is an alternating current type voltage stabilizer and also charges the battery in the machine; when the commercial power is interrupted (power failure in accident), the UPS immediately supplies the direct current electric energy of the battery to the load by a method of switching and converting the inverter to continuously supply 220V alternating current to the load, so that the load keeps normal work and the software and hardware of the load are protected from being damaged. UPS devices typically provide protection against either excessive voltage or insufficient voltage.

However, the existing ac Uninterruptible Power Supply (UPS) has no bypass system with automatic voltage regulation function in cooperation with the UPS during installation and use. When the voltage of an external power supply grid fluctuates or the load changes, the fluctuation range of the output voltage of the UPS is large, the stability is insufficient, and the power supply quality cannot be effectively guaranteed.

This application realizes the stable function of automatic output voltage that keeps through setting up the pressure regulating system to improve the power supply reliability.

Disclosure of Invention

The invention aims to solve the defects of the conventional alternating current Uninterruptible Power Supply (UPS) in use, and provides a UPS bypass voltage regulating system which can automatically keep the output voltage stable and the voltage regulation stable and can ensure reliable and stable power supply.

In order to solve the technical problems, the invention adopts the technical scheme that:

the utility model provides a UPS bypass pressure regulating system, bypass pressure regulating system includes that the bypass opens and close switch, step-up pressure regulator, step-down pressure regulator, isolation transformer, self-interacting protection system, silicon controlled rectifier adjust the control group, measure inspection mechanism and winding linkage regulating switch, step-down pressure regulator sets up at the system input end, step-down pressure regulator plays step-down pressure regulating function, when the size and the polarity of the voltage that adds on the input primary coil take place amplitude variation, the secondary coil that enables the transformer produces corresponding amplitude and polarity and adjusts, step-up pressure regulator sets up at the system output end, step-up pressure regulator plays the pressure regulating function that steps up, when the size and the polarity of the voltage that add on the input primary coil take place amplitude variation, can make the secondary coil of transformer produce corresponding amplitude and polarity and adjust, step-down pressure regulator's winding regulation end with step-up pressure regulator's winding regulation end and winding are allied oneself with the winding and are connected when changing The adjusting part of the dynamic adjusting switch is connected, the winding linkage adjusting switch is responsible for linkage control and adjustment of a winding of the voltage reduction variable voltage regulator and a winding access system position of the voltage boost variable voltage regulator, the silicon controlled rectifier adjusting control group can work under the conditions of high voltage and large current, and the silicon controlled rectifier adjusting control group has the advantages of high voltage resistance, large capacity, small size, high response speed and the like.

Further, the bypass on-off switch is arranged between the input live wire and the output live wire, the bypass on-off switch is connected with the output end of the bypass voltage regulating system, and the bypass on-off switch is responsible for controlling the starting and quitting of the bypass voltage regulating system.

Further, the isolation transformer is arranged to be connected between the winding of the buck converter and the winding of the boost converter for electrically isolating the input winding and the output winding from each other to avoid the danger of accidentally touching both the live body (or the metal part that may be live due to insulation damage) and the ground.

Preferably, the silicon controlled rectifier adjusts the control group and includes first silicon controlled rectifier, second silicon controlled rectifier, third silicon controlled rectifier, fourth silicon controlled rectifier and fifth silicon controlled rectifier, first silicon controlled rectifier the second silicon controlled rectifier the third silicon controlled rectifier with the fourth silicon controlled rectifier is established ties, first silicon controlled rectifier and the parallel arrangement of winding regulation end of step-down voltage regulator, the third silicon controlled rectifier and the parallel arrangement of winding regulation end of step-up voltage regulator, the fifth silicon controlled rectifier with first silicon controlled rectifier the second silicon controlled rectifier the third silicon controlled rectifier with the passageway series connection setting that the fourth silicon controlled rectifier is constituteed.

Preferably, measure inspection mechanism and measure inspection portion, second winding and measure inspection portion including protection measurement inspection portion, first winding, protection measurement inspection portion establishes ties and sets up fifth silicon controlled rectifier front end, fifth silicon controlled rectifier reaches protection measurement inspection portion is connected with system zero line, first winding measurement inspection portion with first silicon controlled rectifier sets up in parallel, first winding measurement inspection portion is used for examining whether the winding position of step-down voltage-variable regulator is in the correct position, second winding measurement inspection portion with third silicon controlled rectifier sets up in parallel, second winding measurement inspection portion is used for examining whether the winding position of step-up voltage-variable regulator is in the correct position.

Preferably, the self-adjusting protection system is arranged between the silicon controlled rectifier adjusting control group and the measuring and checking mechanism.

Further, self-interacting protection system sets up between fifth silicon controlled rectifier and protection measurement inspection portion, self-interacting protection system is inside including being equipped with MCU control circuit, the under-voltage detection system of excessive pressure, frequency anomaly detection system and machine fault detection alarm system, MCU control circuit is used for realizing the pressure regulating control function, the under-voltage detection system of excessive pressure is used for the detection voltage size to judge whether need be adjusted, frequency anomaly detection system is used for detecting voltage frequency whether normal, machine fault detection alarm system is used for reporting to the police in modes such as sound, light, communication after discovering machine and system fault, and detection interconnection through each protection system has improved bypass pressure regulating system's security greatly, ensures that bypass pressure regulating system can satisfy the demand of long-term continuous operation.

Preferably, the UPS bypass voltage regulation system includes four self-regulating gears, and the self-regulating gears include a large step-up gear, a small step-up gear, a step-down gear, and a pass-through gear. When the step-up gear is large, the step-up variable pressure regulator 1 acts, and the step-down variable pressure regulator 2 does not act; when the step-up gear is small, the step-up variable voltage regulator 1 and the step-down variable voltage regulator 2 act; when the gear is stepped down, the step-up variable pressure regulator 1 is not moved, and the step-down variable pressure regulator 2 is moved; when the gear is through, the step-up voltage-variable regulator 1 and the step-down voltage-variable regulator 2 do not act.

Furthermore, the UPS bypass voltage regulating system is in when the grade is stepped up to the little, the winding length of the winding access system end of step-up voltage regulator is greater than the winding length of the winding access system end of step-down voltage regulator for the step-up winding that inserts the bypass voltage regulating system is greater than the step-down winding that inserts the bypass voltage regulating system, in order to ensure that the system carries out microlitre and presses the regulation.

Preferably, be equipped with current transformer on bypass voltage regulation system's pressure regulating output, current transformer sets up and is located the boost voltage regulator and with between the winding linkage regulating switch, current transformer suppresses input current, current transformer converts the circulation heavy current into undercurrent in order to prevent that the circuit board spare is damaged.

Preferably, the bypass on-off switch comprises a voltage regulation closing gear and an automatic voltage regulation access gear, so that the bypass voltage regulation system can be switched in and switched off at any time according to actual production, automatic voltage regulation processing is rapidly carried out, and the flexibility of voltage output control is ensured.

Preferably, the input end of the UPS bypass voltage regulation system is provided with a power input control switch, and the power input control switch controls the fast connection and disconnection of the bypass voltage regulation system.

Preferably, UPS bypass pressure regulating system is connected with display system and communication system, display system connects the display and shows that UPS bypass pressure regulating system operating condition is detailed, communication system connects communication network and externally carries out real-time communication, can be fast directly perceivedly with the operating condition of exchanging Uninterrupted Power System (UPS), bypass pressure regulating system's running state and the trouble problem transmission who meets for operating personnel, and operating personnel can in time make corresponding processing reaction to improve the job stabilization nature of exchanging Uninterrupted Power System (UPS).

Compared with the prior art, the invention has the following gain effects: the bypass voltage regulating system can bear instantaneous overload, is suitable for various linear and nonlinear loads, and has wide application range; the bypass pressure regulating system is provided with a manual and automatic random switching control mode, and can effectively meet the long-term continuous working requirement of the system by combining self-adjusting protection systems such as overvoltage, undervoltage, frequency abnormality, machine faults and the like. The bypass voltage regulating system can automatically keep the stability of the output voltage and the stable voltage regulation, and can ensure the reliable and stable power supply. When the voltage of an external power supply grid fluctuates or the load changes, the voltage regulating system can automatically and quickly regulate the output voltage and keep the voltage output stable. The bypass voltage regulating system has the advantages of large accessible load capacity, wide voltage regulating range, low energy loss, high output voltage amplitude precision, high voltage regulating response speed, no waveform distortion and the like.

Drawings

FIG. 1 is a schematic diagram of a UPS bypass voltage regulation system according to the present invention.

FIG. 2 is a schematic diagram of a large step-up gear of the UPS bypass voltage regulation system of the present invention.

FIG. 3 is a schematic diagram of a small boost gear of the UPS bypass voltage regulation system of the present invention.

FIG. 4 is a schematic diagram of a step-down gear of the UPS bypass voltage regulation system of the present invention.

FIG. 5 is a schematic diagram of a through gear of the UPS bypass voltage regulation system of the present invention.

FIG. 6 is a schematic diagram of the shutdown of the UPS bypass voltage regulation system of the present invention.

The reference numerals are explained below:

the device comprises a boost variable voltage regulator-1, a buck variable voltage regulator-2, a bypass on-off switch-3, a self-regulation protection system-4, a first silicon controlled rectifier-5, a second silicon controlled rectifier-6, a third silicon controlled rectifier-7, a fourth silicon controlled rectifier-8, a fifth silicon controlled rectifier-9, a protection measurement inspection part-10, a first winding measurement inspection part-11, a second winding measurement inspection part-12, a current transformer-13, a winding linkage adjusting switch-14, a power input control switch-15 and an adjusting part-16.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

To further clarify the objects, features and functions of the present invention, a review board will be provided by referring to the following description of the preferred embodiments in conjunction with the accompanying drawings:

referring to fig. 1-6, the invention is a UPS bypass voltage regulation system, the bypass voltage regulation system includes a bypass on-off switch 3, a step-up voltage regulator 1, a step-down voltage regulator 2, an isolation transformer, a self-regulation protection system 4, a thyristor regulation control group, a measurement inspection mechanism and a winding linkage regulation switch 14, the step-down voltage regulator 2 is disposed at the system input end, the step-down voltage regulator 2 has a step-down voltage regulation function, when the magnitude and polarity of the voltage applied to the primary coil of the input end are changed in amplitude, the secondary coil of the transformer can generate corresponding amplitude and polarity regulation, the step-up voltage regulator 1 is disposed at the system output end, the step-up voltage regulator 1 has a step-up voltage regulation function, when the magnitude and polarity of the voltage applied to the primary coil of the input end are changed in amplitude, the secondary coil of the transformer can generate corresponding amplitude and polarity regulation, the winding of step-down voltage change voltage regulator 2 adjust the end with the winding of step-up voltage change voltage regulator 1 is adjusted the end and is connected with winding linkage regulating switch 14's regulating part 16, winding linkage regulating switch 14 be responsible for the coordinated control adjust step-down voltage change voltage regulator 2 the winding with step-up voltage change voltage regulator 1's winding access system position, the silicon controlled rectifier is adjusted the control group and can be worked under high voltage, heavy current condition, has advantages such as withstand voltage height, capacious, small, response speed are fast.

Further, bypass on-off switch 3 sets up between input live wire and the output live wire, bypass on-off switch 3 is connected with bypass pressure regulating system output, bypass on-off switch 3 is responsible for the start-up and the withdraw from of control bypass pressure regulating system.

Further, the isolation transformer is arranged to be connected between the windings of the buck converter 2 and the windings of the boost converter 1 for electrically isolating the input windings and the output windings from each other to avoid the risk of accidentally touching both the live body (or the metal part that may be live due to insulation damage) and the ground.

Preferably, the silicon controlled rectifier adjusts the control group and includes first silicon controlled rectifier 5, second silicon controlled rectifier 6, third silicon controlled rectifier 7, fourth silicon controlled rectifier 8 and fifth silicon controlled rectifier 9, first silicon controlled rectifier 5 the second silicon controlled rectifier 6 the third silicon controlled rectifier 7 with fourth silicon controlled rectifier 8 is established ties, first silicon controlled rectifier 5 and the parallel arrangement of winding regulation end of step-down voltage regulator 2, third silicon controlled rectifier 7 and the parallel arrangement of winding regulation end of step-up voltage regulator 1, fifth silicon controlled rectifier 9 with first silicon controlled rectifier 5 the second silicon controlled rectifier 6 the third silicon controlled rectifier 7 with the passageway series connection setting that fourth silicon controlled rectifier 8 is constituteed.

Preferably, the self-adjusting protection system 4 is arranged between the thyristor adjustment control group and the measurement and inspection mechanism.

Further, it measures inspection mechanism including protection measurement inspection portion 10, first winding measurement inspection portion 11, second winding measurement inspection portion 12, protection measurement inspection portion 10 series connection sets up fifth silicon controlled rectifier 9 front end, fifth silicon controlled rectifier 9 reaches protection measurement inspection portion 10 is connected with system zero line, first winding measurement inspection portion 11 with first silicon controlled rectifier 5 sets up in parallel, first winding measurement inspection portion 11 is used for checking whether the winding position of step-down voltage regulator 2 is in the correct position, second winding measurement inspection portion 12 with third silicon controlled rectifier 7 sets up in parallel, second winding measurement inspection portion 12 is used for checking whether the winding position of step-up voltage regulator 1 is in the correct position.

Preferably, self-interacting protection system 4 sets up between fifth silicon controlled rectifier 9 and protection measurement inspection portion 10, self-interacting protection system 4 is inside including being equipped with MCU control circuit, the under-voltage detection system of excessive pressure, unusual detecting system of frequency and machine fault detection alarm system, MCU control circuit is used for realizing the pressure regulating control function, the under-voltage detection system of excessive pressure is used for the detection voltage size to judge whether need be adjusted, the unusual detecting system of frequency is used for detecting voltage frequency and whether normal, machine fault detection alarm system is used for reporting to the police in modes such as sound, light, communication after discovering machine and system fault, and detection interconnection through each protection system has improved bypass pressure regulating system's security greatly, ensures that bypass pressure regulating system can satisfy the demand of long-term continuous operation.

Preferably, the UPS bypass voltage regulation system includes four self-regulating gears, and the self-regulating gears include a large step-up gear, a small step-up gear, a step-down gear, and a pass-through gear. When the step-up gear is large, the step-up variable pressure regulator 11 acts, and the step-down variable pressure regulator 22 does not act; when the voltage is in a small step-up gear, the step-up variable voltage regulator 11 and the step-down variable voltage regulator 22 act; during the step-down gear, the step-up variable pressure regulator 11 is not moved, and the step-down variable pressure regulator 22 is operated; in the through-gear, the step-up voltage regulator 11 and the step-down voltage regulator 22 are not operated.

Furthermore, the UPS bypass voltage regulating system is in when the gear steps up for a short time, the winding length of the winding access system end of the boost voltage regulator 1 is greater than the winding length of the winding access system end of the buck voltage regulator 2, so that the boost winding accessed into the bypass voltage regulating system is greater than the buck winding accessed into the bypass voltage regulating system, and the system is ensured to carry out microlitre voltage regulation.

Preferably, be equipped with current transformer 13 on bypass voltage regulation system's the pressure regulating output, current transformer 13 sets up and is located step-up voltage regulator 1 and with winding linkage regulating switch 14 between, current transformer 13 suppresses input current, current transformer 13 converts the circulation heavy current into undercurrent in order to prevent that circuit board spare is damaged.

Preferably, the bypass on-off switch 3 comprises a voltage regulation closing gear and an automatic voltage regulation access gear, so that the bypass voltage regulation system can be switched in and off at any time according to actual production, automatic voltage regulation processing is rapidly carried out, and the flexibility of voltage output control is ensured.

Preferably, a power input control switch 15 is arranged at the input end of the UPS bypass voltage regulation system, and the power input control switch 15 controls the fast connection and disconnection of the bypass voltage regulation system.

Preferably, UPS bypass pressure regulating system is connected with display system and communication system, display system connects the display and shows that UPS bypass pressure regulating system operating condition is detailed, communication system connects communication network and externally carries out real-time communication, can be fast directly perceivedly with the operating condition of exchanging Uninterrupted Power System (UPS), bypass pressure regulating system's running state and the trouble problem transmission who meets for operating personnel, and operating personnel can in time make corresponding processing reaction to improve the job stabilization nature of exchanging Uninterrupted Power System (UPS).

Example 1-high boost treatment:

as shown in figure 2, when the system detects that the input voltage of the AC uninterrupted power supply system is low and the input voltage is 180V-210V, the UPS bypass voltage regulating system of the invention automatically regulates to a large voltage boosting gear, as shown in figure 2, a winding linkage regulating switch 14 acts, the winding linkage regulating switch 14 regulates the winding of a voltage reduction voltage regulator 2 to the highest position through a regulating part 16, regulates the winding of the voltage reduction voltage regulator 1 to the lowest position, simultaneously a first silicon controlled rectifier 5, a second silicon controlled rectifier 6 and a fourth silicon controlled rectifier 8 are closed, a third silicon controlled rectifier 7 is opened, so that the voltage reduction voltage regulator 2 does not act, the voltage increase voltage regulator 1 acts, and the AC uninterrupted power supply system can stably boost the supply voltage by 220V and transmit the supply voltage to a load for normal work through the bypass voltage regulating system.

An isolation transformer is arranged connected between the windings of the buck converter 2 and the windings of the boost converter 1 for electrically isolating the windings of the buck converter 2 and the windings of the boost converter 1 from each other to avoid the danger of accidentally touching live parts or possibly live metal parts and ground due to insulation damage at the same time.

Example 2-small boost treatment:

as shown in FIG. 3, when the system detects that the input voltage of the AC UPS system is slightly low and the input voltage is 210V-219V, the UPS bypass voltage regulating system of the invention automatically adjusts to a small step-up gear, as shown in FIG. 3, the winding linkage adjusting switch 14 acts to the middle position, the winding linkage adjusting switch 14 adjusts the winding of the step-down voltage variable regulator 2 to the middle position through the adjusting part 16, adjusts the winding of the step-up voltage variable regulator 1 to the middle position, the winding length of the winding access system end of the step-up voltage variable regulator 1 is longer than that of the winding access system end of the step-down voltage variable regulator 2, so that the step-up variation of the step-up voltage variable regulator 1 is larger than that of the step-down voltage variable regulator 2,

example 3-depressurization treatment:

as shown in figure 4, when the system detects that the input voltage of the AC UPS system is high and the input voltage is 220V-230V, the UPS bypass voltage regulating system of the invention automatically adjusts to downshift, as shown in figure 4, the winding linkage regulating switch 14 acts, the winding linkage regulating switch 14 adjusts the winding of the voltage-reducing voltage regulator 2 to the lowest position through the regulating part 16, the winding of the voltage-increasing voltage regulator 1 is adjusted to the highest position, meanwhile, the second controllable silicon 6, the third controllable silicon 7 and the fourth controllable silicon 8 are closed, the first controllable silicon 5 is disconnected, so that the voltage-increasing voltage regulator 1 does not act, the voltage-reducing voltage regulator 2 acts, and the AC UPS system can stably increase the supply voltage by 220V and transmit the supply voltage to the load for normal work through the bypass voltage regulating system.

Example 4-access pass-through processing:

as shown in fig. 5, when the system detects that the input voltage of the ac UPS system reaches a stable voltage value and the input voltage is 220V, the UPS bypass voltage regulation system of the present invention automatically adjusts to a pass-through gear, as shown in fig. 5, the winding linkage regulation switch 14 operates, the winding linkage regulation switch 14 adjusts the windings of the boost voltage regulator 1 and the buck voltage regulator 2 to the highest position through the regulation portion 16, and simultaneously the first thyristor 5, the second thyristor 6, the third thyristor 7 and the fourth thyristor 8 are closed, so that the boost voltage regulator 1 and the buck voltage regulator 2 do not operate, the boost voltage regulator 1 operates, and the ac UPS system directly provides 220V regulated voltage to the load.

Example 5-break bypass access process:

as shown in fig. 6, when the system needs to be disconnected and other operations are performed, the bypass on-off switch 3 is turned to the voltage-regulating closing gear, and power is directly output from the live wire output end without passing through the bypass voltage-regulating system.

The fifth controllable silicon 9 is used for protecting and measuring voltage and is equivalent to open circuit, when the system works, the fifth controllable silicon 9 is closed, the measured voltage and the current measured by ct are monitored after the fifth controllable silicon 9 is closed, and once the current exceeds the preset unsafe value, the system is controlled to stop voltage regulation.

The UPS bypass voltage regulating system automatically regulates the working mode according to the change of the input voltage, stabilizes the output voltage within an allowable range, does not need manual operation and does not need a manual voltage regulating loop.

In the system, an MCU control circuit, an overvoltage and undervoltage detection system, a frequency abnormality detection system and a machine fault detection alarm system are arranged in a self-adjusting protection system 4. The MCU control circuit is used for realizing a voltage regulation control function and is responsible for switching and allocating the control system. The overvoltage and undervoltage detection system is used for detecting the voltage and judging whether the voltage meets the conveying requirement or not so as to adjust. The frequency abnormality detection system is used for detecting whether the voltage frequency is normal or not and is responsible for detecting whether the working state of the system is abnormally changed or not. The machine fault detection alarm system is used for alarming in sound, light, communication and other modes after a machine and system fault is found, and is responsible for detecting the running state of the system and sending out an alarm signal when the system is in fault.

The invention improves the accuracy and the safety of the bypass voltage regulating system for regulating the AC uninterrupted power supply by the detection interconnection of all the protection systems, and ensures that the bypass voltage regulating system and the AC uninterrupted power supply system can meet the requirement of long-term continuous voltage transmission and power supply.

The display system is used for displaying information such as equipment sampling, setting, alarming and the like, and the communication system is used for realizing an external communication function. An operator can quickly and intuitively place the working state of an alternating current Uninterruptible Power Supply (UPS) and the running of a bypass voltage regulating system in which gear through a display system, timely acquire the position and reason of a system fault, quickly perform corresponding processing operation by combining a communication system, ensure the normal voltage regulation and stabilization of the system, and keep the load to work normally.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.