Novel analog voltage regulator

Abstract

The invention discloses a novel analog voltage regulator which comprises a regulator shell assembly and a terminal assembly. Compared with a traditional analog voltage regulator, the voltage regulator has better capability in voltage acquisition, current, current calculation, power calculation, motor detection protection and load capacity through the regulator shell assembly and the terminal assembly, voltage is acquired and calculated through output voltage, the voltage calculation result of the voltage regulator is more accurate, and the voltage regulator is more convenient to use. Through the current transformer, the current of the generator during operation can be calculated, and the current calculation result is accurate to 0.5 A. The device has a power calculation capability, can calculate active power, reactive power and apparent power of a generator, can adjust excitation output at the moment of starting an inductive load through the active power, achieves the capability of driving a higher-power inductive load, and also has a generator frequency detection function. The generator can be prevented from being damaged in over-frequency and under-frequency states, and equipment being loaded can be prevented from being damaged in the over-frequency and under-frequency states.

Description

Technical Field

[0001] The invention relates to the technical field of voltage regulators, in particular to a novel analog voltage regulator. Background Art

[0002] Most of the analog voltage controllers currently used in the market control the output voltage by the ratio of the sampling voltage to the output voltage. The sampling voltage of the analog voltage controller is synchronized with the output voltage frequency. When a certain ratio is set between the sampling voltage and the output voltage, the motor output voltage can be controlled to a set value. In the prior art, the analog voltage controller has the following disadvantages: The load driven by the generator has different loads. Different loads have different electrical characteristics when starting. For example, when the resistive load starts, the power required is almost unchanged; compared with the resistive load, the inductive load needs a larger power when starting. After the start is stable, the operating power of the inductive load decreases. For this characteristic of the inductive load, the analog voltage controller needs a greater driving capability. For example, a generator with a rated power of 10KW drives an inductive load with a rated power of 5KW.

[0003] During the operation of the generator, when the load changes (loading, unloading, etc.), the analog voltage controller controls the voltage index as the sampling voltage with the same frequency as the output voltage. That is, the analog voltage controller can only control the generator through the voltage ratio, and the loading moment will cause loss to the generator.

[0004] When the load type is switched from a single-phase load to a three-phase load or from a three-phase load to a single-phase load, the analog voltage controller cannot identify the load type and can only increase or decrease the output of the generator according to the voltage ratio.

[0005] The analog voltage controller controls the size of the motor output voltage according to the voltage ratio. When the motor fails, the analog voltage controller cannot stop the generator. When the motor fails, the analog voltage controller cannot indicate the source of the generator failure. Summary of the invention

[0006] Therefore, the purpose of the present invention is to provide a new type of analog voltage regulator. Compared with the traditional analog voltage regulator, the voltage regulator has better capabilities in voltage acquisition, current, current calculation, power calculation, motor detection protection and load capacity through the regulator housing assembly and terminal assembly. The voltage is calculated by collecting the output voltage, and the voltage calculation result of the voltage regulator is more accurate. The current of the generator during operation can be calculated through the current transformer, and the result of the current calculation is accurate to 0.5A, which has the power calculation ability. The active power, reactive power and apparent power of the generator can be calculated. The excitation output of the inductive load at the moment of starting can be adjusted through the active power to achieve the ability to drive a higher power inductive load. It also has a generator frequency detection function, which can prevent the generator from damaging the generator and the equipment being loaded in the state of overfrequency and underfrequency.

[0007] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: a novel analog voltage regulator, comprising: A regulator housing assembly, the regulator housing assembly comprising an aluminum housing, a mounting plate disposed inside the aluminum housing, and a raised strip fixed to the back of the aluminum housing; A terminal assembly, the terminal assembly comprising a 3.81MM 5PIN terminal locked on the surface of the mounting plate, a 5.08MM 7PIN terminal located on the same side of the 3.81MM 5PIN terminal, a 5.08MM 5PIN terminal located on the opposite side of the 3.81MM 5PIN terminal, a first 3.81MM 4PIN terminal and a second 3.81MM 4PIN terminal located on the same side of the 5.08MM 5PIN terminal.

[0008] As a preferred solution of the novel analog voltage regulator described in the present invention, the 3.81MM5PIN terminal is used to measure the current of the generator, and can measure 4 current values ​​at the same time, specifically: single-phase current, three-phase A, B, and C currents.

[0009] As a preferred solution of a new type of analog voltage regulator described in the present invention, the 5.08MM7PIN terminal is used to sample the output voltage of the generator and detect the voltage mode, specifically: the output voltage measurement point is the motor output voltage. When the motor is in three-phase mode and single three-phase output is connected, the A, B, C three-phase lines and the neutral line are connected, and the load output switch is connected; in single-phase mode, the live line and the neutral line are connected, and the load output switch is connected. When single three-phase output is connected, the load output switch output line also needs to be connected.

[0010] As a preferred solution of the novel analog voltage regulator described in the present invention, the 5.08MM5PIN terminal is the excitation output, the input power supply of the excitation output is the secondary winding of the generator, the secondary winding is an AC voltage, and after conversion by the voltage regulator, it is a periodic DC voltage waveform, and the duty cycle of the periodic voltage is calculated according to the power, voltage and working mode of the generator.

[0011] As a preferred solution of a new type of analog voltage regulator described in the present invention, the first 3.81MM4PIN terminal is used for communication with other serial port devices. Specifically, the voltage regulator communication protocol is the standard ModBus_RTU standard protocol and instruction code, and the setting parameters of the voltage regulator and the indicator data during the operation of the motor are read through the RS485 serial port.

[0012] As a preferred solution of a new type of analog voltage regulator described in the present invention, the second 3.81MM 4PIN terminal is used for the power supply and fault output control point of the voltage regulator. Specifically: the power supply source of the voltage regulator is the AC power output by the flywheel of the generator. While supplying power, the frequency of the corresponding flywheel is also detected. The frequency of the flywheel is proportional to the frequency of the output voltage. The frequency of the flywheel is measured, and the speed of the generator and the frequency of the output voltage are calculated. The calculated values ​​are used to protect the generator. When the generator operates normally within the specified range, the frequency protection does not operate. When the generator set is overclocked or underclocked, the generator fault output point is activated to stop the generator.

[0013] A method of using a new type of analog voltage regulator: The specific steps are as follows: After the generator starts, the voltage rises slowly in rhythm. The entire startup time and the amplitude of the rise can be set by the computer host software. The generator starts stably. When the load is connected: when the power of the load is less than 110% of the rated power of the generator, the generator is in constant voltage mode; When the connected load is not less than 110% of the rated power of the generator, the generator enters the constant power mode; in the constant power mode, the voltage of the generator decreases accordingly. The greater the power, the lower the voltage. The constant power mode is mostly used to start inductive loads to a greater extent. When loading inductive loads, the load power will increase a lot instantly. After the inductive load stabilizes, the load power will be at the rated power level of the load. The voltage regulator has a reserved RS485 serial port, and the protocol is the industrial ModBus_RTU standard protocol and instruction code. The current, voltage, power, power factor, cumulative running time and other data are directly displayed on the display. Through the RS485 serial port and the computer host software connection, the AVR voltage regulator data and generator operating status can be fully obtained; The AVR voltage regulator reserves one passive switch output, which is suitable for low-power fault linkage or alarm equipment.

[0014] As a preferred scheme of the method of using a new type of analog voltage regulator described in the present invention, when the AVR voltage regulator triggers the fault mechanism, it will take protective measures for the generator. The fault protection trigger mechanism can be set by the upper computer to ignore, pre-warning, and warning. When set to ignore, the corresponding protection function cancels the trigger; when set to pre-warning, the protection mechanism is triggered, and the fault output does not operate; when set to warning, the alarm mechanism is triggered, the machine is shut down at the same time, and the fault relay is output.

[0015] As a preferred scheme of the method of using a new type of analog voltage regulator described in the present invention, the protection functions include: EEPROM protection, undervoltage protection, overvoltage protection, capacitor overvoltage protection, phase loss protection, three-phase imbalance protection, overload protection, overcurrent protection, overfrequency protection, underfrequency protection, and overtemperature protection.

[0016] As a preferred solution of the method for using a novel analog voltage regulator described in the present invention, EEPROM protection: when the generator is started, the power-off saved data is read, and when no data is read or the calibration of the read data fails, the EEPROM protection is triggered, and the set EEPROM protection mechanism is an alarm, and the parameters in the AVR voltage regulator are set to the factory data; Undervoltage protection: After the machine is running stably, when the continuously measured phase voltage is less than the set value, the undervoltage protection mechanism is triggered, the machine is shut down and a fault output is generated; Overvoltage protection: After the machine is running stably, when the continuously measured phase voltage is greater than the set value, the overvoltage protection mechanism is triggered, the machine is shut down and a fault output is generated; Capacitor overvoltage protection: After the machine is running stably, when the continuously measured capacitor voltage is greater than the set value, the capacitor overvoltage protection mechanism is triggered, the machine is shut down and a fault output is generated; Phase loss protection: After the machine is running stably, if the continuously measured phase voltage is less than the set value, it is considered as phase loss by default, triggering the phase loss protection mechanism, shutting down and outputting a fault. Three-phase unbalance protection: After the machine runs stably, if the absolute value of the three-phase voltage difference measured continuously is greater than the set value, it is considered three-phase unbalance by default, triggering the three-phase unbalance protection mechanism, shutting down and outputting a fault simultaneously; Overload protection: After the machine runs stably, when the continuously measured effective power is greater than the rated power but less than 110% of the rated power, the overload protection mechanism is triggered, the serial port sends out a warning sign, and the fault output does not operate. After the machine runs stably, when the continuously measured effective power is not less than 110% of the rated power, the overload protection mechanism is triggered, the machine is shut down and the fault output is activated; Overcurrent protection: After the machine runs stably, when the continuously measured effective power is greater than the rated power and less than 150% of the rated current, the overcurrent protection mechanism is triggered, the serial port sends out a warning sign, and the fault output does not operate. After the machine runs stably, when the continuously measured effective power is not less than 150% of the rated power, the overcurrent protection mechanism is triggered, the machine is shut down and the fault output is output; Overclocking protection: After the machine is running stably, if the continuously measured frequency is not less than the set maximum frequency protection value, the overclocking protection mechanism is triggered, the machine is shut down and a fault output is generated; Under-frequency protection: After the machine runs stably, if the continuously measured frequency is not greater than the set frequency protection minimum value, the over-frequency protection mechanism is triggered, and the machine is shut down and a fault output is generated; Over-temperature protection: After the machine runs stably, if the continuously measured shell temperature is not less than the set temperature protection maximum value, the over-temperature protection mechanism is triggered, the machine shuts down and a fault output is generated.

[0017] Compared with the prior art, the advantages of the present invention are: 1. The analog voltage regulator can only determine the output of the excitation by the ratio of the voltage at the same frequency, while the current voltage regulator calculates the voltage by collecting the output voltage. The voltage regulator voltage calculation result is more accurate; 2. The analog voltage regulator does not have the ability to calculate the current. The voltage regulator can calculate the current of the generator when it is running through the current transformer. The result of the current calculation is accurate to 0.5A. 3. The analog voltage regulator does not have the ability to calculate power, but the voltage regulator has the ability to calculate power. It can calculate the active power, reactive power and apparent power of the generator. The active power can be used to adjust the excitation output at the moment of starting the inductive load, so as to achieve the ability to drive a higher power inductive load; 4. The voltage regulator also has the generator frequency detection function, which can prevent the generator from damaging the generator and the equipment being loaded in the state of over-frequency or under-frequency; 5. The voltage regulator has the function of load type recognition. When the loaded load is switched, the voltage regulator can instantly identify the type of current load (single-phase load, three-phase load or single-phase and three-phase loads coexisting). BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in combination with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 It is a structural diagram of the present invention; Figure 2It is a back structural diagram of the present invention; Figure 3 It is a circuit schematic diagram of the present invention.

[0019] In the figure: 11, aluminum housing; 12, mounting plate; 13, raised strip; 21, 3.81MM 5PIN terminal; 22, 5.08MM 7PIN terminal; 23, 5.08MM 5PIN terminal; 24, first 3.81MM 4PIN terminal; 25, second 3.81MM 4PIN terminal. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional space dimensions of length, width and depth should be included.

[0023] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] The present invention provides a novel analog voltage regulator. Compared with the traditional analog voltage regulator, the voltage regulator has better capabilities in voltage acquisition, current, current calculation, power calculation, motor detection protection and load capacity through the regulator housing component and terminal component. The voltage is calculated by collecting the output voltage, and the voltage calculation result of the voltage regulator is more accurate. The current when the generator is running can be calculated through the current transformer, and the result of the current calculation is accurate to 0.5A, which has the power calculation ability. The active power, reactive power and apparent power of the generator can be calculated, and the excitation output at the moment of starting the inductive load can be adjusted through the active power to achieve the ability to drive a higher power inductive load. It also has a generator frequency detection function, which can prevent the generator from damaging the generator and the equipment being loaded in the state of overfrequency and underfrequency.

[0025] Figure 1-Figure 3 FIG. 1 is a schematic diagram showing the overall structure of a novel analog voltage regulator according to an embodiment of the present invention. Figure 1-3 The main structure of this embodiment includes: a regulator housing assembly and a terminal assembly.

[0026] The regulator housing assembly is used for terminal installation. Specifically, the regulator housing assembly includes an aluminum housing 11, a mounting plate 12 disposed inside the aluminum housing 11, and a raised strip 13 fixed to the back of the aluminum housing 11; In actual use, the terminal assembly is installed and used based on the aluminum outer shell 11 and the mounting plate 12, and the aluminum outer shell 11 is convenient for heat dissipation of the regulator.

[0027] The terminal assembly is used to optimize the function of the transmission analog voltage regulator. Specifically, the terminal assembly includes a 3.81MM5PIN terminal 21 locked on the surface of the mounting plate 12, a 5.08MM7PIN terminal 22 located on the same side of the 3.81MM5PIN terminal, a 5.08MM5PIN terminal 23 located on the opposite side of the 3.81MM5PIN terminal 21, a first 3.81MM4PIN terminal 24 and a second 3.81MM4PIN terminal 25 located on the same side of the 5.08MM5PIN terminal 23; In specific use, the 3.81MM5PIN terminal 21 is used to measure the current of the generator, and can measure 4 current values ​​at the same time, specifically: single-phase current, three-phase A, B, and C currents. The 5.08MM7PIN terminal 22 is used to sample the output voltage of the generator and detect the voltage mode, specifically: the output voltage measurement point is the motor output voltage. When the motor is in three-phase mode and single-three-phase simultaneous output, connect the A, B, and C three-phase lines and the neutral line, and the load output switch input line; in single-phase mode, connect the live wire and the neutral line, the load output switch input line, and when single-three-phase simultaneous output, the load output switch output line also needs to be connected. The 5.08MM5PIN terminal 23 is the excitation output. The input power supply of the excitation output is the auxiliary winding of the generator. The auxiliary winding is an AC voltage. After conversion by the voltage regulator, it is a periodic DC voltage waveform. The duty cycle of the periodic voltage is based on the power, voltage, and working voltage of the generator. The operation mode is calculated, the first 3.81MM4PIN terminal 24 is used for other serial port device communication, specifically: the voltage regulator communication protocol is the standard ModBus_RTU standard protocol and instruction code, and the setting parameters of the voltage regulator and the index data during the operation of the motor are read through the RS485 serial port. The second 3.81MM 4PIN terminal 25 is used for the power supply and fault output control point of the voltage regulator. Specifically: the power supply source of the voltage regulator is the AC power output by the flywheel of the generator. While supplying power, the frequency of the corresponding flywheel is also detected. The frequency of the flywheel is proportional to the frequency of the output voltage. The frequency of the flywheel is measured, and the speed of the generator and the frequency of the output voltage are calculated. The calculated value is used to protect the generator. When the generator operates normally within the specified range, the frequency protection does not operate. When the generator set is overclocked or underclocked, the generator fault output point operates to stop the generator.

[0028] After the regulator is started, the voltage rises slowly according to the rhythm. The entire startup time and the amplitude of the rise can be set through the computer-side host software. The generator starts stably. When the load is connected: when the power of the load is less than 110% of the rated power of the generator, the generator is in constant voltage mode; When the connected load is not less than 110% of the rated power of the generator, the generator enters the constant power mode; in the constant power mode, the voltage of the generator decreases accordingly. The greater the power, the lower the voltage. The constant power mode is mostly used to start inductive loads to a greater extent. When loading inductive loads, the load power will increase a lot instantly. After the inductive load stabilizes, the load power will be at the rated power level of the load. The voltage regulator has a reserved RS485 serial port, and the protocol is the industrial ModBus_RTU standard protocol and instruction code. The current, voltage, power, power factor, cumulative running time and other data are directly displayed on the display. Through the RS485 serial port and the computer host software connection, the AVR voltage regulator data and generator operating status can be fully obtained; The AVR voltage regulator reserves 1 passive switch output, which is suitable for low-power fault linkage or alarm equipment. When the AVR voltage regulator triggers the fault mechanism, it will take protective measures for the generator. The fault protection trigger mechanism can be set by the host computer to ignore, pre-warning, and warning. When set to ignore, the corresponding protection function cancels the trigger; when set to pre-warning, the protection mechanism is triggered, and the fault output does not act; when set to warning, the alarm mechanism is triggered, and the machine is shut down at the same time, and the fault relay is output. In addition, functional protection can be performed during operation. When the generator starts, the power-off saved data is read. When the data is not read or the calibration of the read data fails, E is triggered. EPROM protection, set the EEPROM protection mechanism to alarm, set the parameters in the AVR voltage regulator to the factory data, after the machine runs stably, when the continuously measured phase voltage is less than the set value, the undervoltage protection mechanism is triggered, and the machine stops and a fault output is output at the same time, after the machine runs stably, when the continuously measured phase voltage is greater than the set value, the overvoltage protection mechanism is triggered, and a fault output is output at the same time when the machine stops and a fault output is output at the same time, after the machine runs stably, when the continuously measured capacitor voltage is greater than the set value, the capacitor overvoltage protection mechanism is triggered, and a fault output is output at the same time when the machine stops and a fault output is output at the same time, after the machine runs stably, when the continuously measured phase voltage is less than the set value, the default is phase loss, triggering the phase loss protection mechanism, and stopping and a fault output is output at the same time. When the machine is running stably, the continuous measurement of the three-phase voltage difference absolute value is greater than the set value, the default is three-phase imbalance, triggering the three-phase imbalance protection mechanism, shutting down and fault output, after the machine is running stably, when the effective power is greater than the rated power and less than 110% of the rated power, the overload protection mechanism is triggered, the serial port sends a warning sign, and the fault output does not work. After the machine is running stably, when the effective power is not less than 110% of the rated power, the overload protection mechanism is triggered, and the shutdown and fault output are triggered. After the machine is running stably, when the effective power is greater than the rated power and less than 150% of the rated current, the overload protection mechanism is triggered. Overcurrent protection mechanism, the serial port sends out a warning sign, and the fault output does not work. After the machine runs stably, when the continuously measured effective power is not less than 150% of the rated power, the overcurrent protection mechanism is triggered, and the machine stops and the fault output is output. After the machine runs stably, when the continuously measured frequency is not less than the set frequency protection maximum value, the overfrequency protection mechanism is triggered, and the machine stops and the fault output is output. After the machine runs stably, when the continuously measured frequency is not greater than the set frequency protection minimum value, the over-under protection mechanism is triggered, and the machine stops and the fault output is output. After the machine runs stably, when the continuously measured shell temperature is not less than the set temperature protection maximum value, the overtemperature protection mechanism is triggered, and the machine stops and the fault output is output.

[0029] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A novel analog voltage regulator, characterized in that: include: A regulator housing assembly, the regulator housing assembly comprising an aluminum housing (11), a mounting plate (12) arranged on the inner side of the aluminum housing (11), and a raised strip (13) fixed on the back side of the aluminum housing (11); A terminal assembly, the terminal assembly comprising a 3.81MM 5PIN terminal (21) locked on the surface of the mounting plate (12), a 5.08MM 7PIN terminal (22) located on the same side of the 3.81MM 5PIN terminal, a 5.08MM 5PIN terminal (23) located on the opposite side of the 3.81MM 5PIN terminal (21), a first 3.81MM 4PIN terminal (24) and a second 3.81MM 4PIN terminal (25) located on the same side of the 5.08MM 5PIN terminal (23).

2. A novel analog voltage regulator according to claim 1, characterized in that: The 3.81MM5PIN terminal (21) is used to measure the current of the generator, and can simultaneously measure four current values, specifically: single-phase current, and three-phase A, B, and C currents.

3. A novel analog voltage regulator according to claim 2, characterized in that: The 5.08MM7PIN terminal (22) is used to sample the output voltage of the generator and detect the voltage mode. Specifically, the output voltage measurement point is the motor output voltage. When the motor is in three-phase mode and single-phase and three-phase output is connected, the A, B, and C three-phase wires and the neutral wire are connected, and the load output switch input line is connected; when in single-phase mode, the live wire and the neutral wire are connected, and the load output switch input line is connected. When single-phase and three-phase output is connected, the load output switch output line also needs to be connected.

4. A novel analog voltage regulator according to claim 3, characterized in that: The 5.08MM5PIN terminal (23) is an excitation output. The input power source of the excitation output is the secondary winding of the generator. The secondary winding is an AC voltage. After conversion by the voltage regulator, it becomes a periodic DC voltage waveform. The duty cycle of the periodic voltage is calculated according to the power, voltage and working mode of the generator.

5. A novel analog voltage regulator according to claim 4, characterized in that: The first 3.81MM4PIN terminal (24) is used for communication with other serial port devices. Specifically, the voltage regulator communication protocol is the standard ModBus_RTU standard protocol and instruction code, and the setting parameters of the voltage regulator and the indicator data during the operation of the motor are read through the RS485 serial port.

6. A novel analog voltage regulator according to claim 5, characterized in that: The second 3.81MM 4PIN terminal (25) is used for power supply and fault output control point of the voltage regulator. Specifically, the power supply of the voltage regulator comes from the AC power output by the flywheel of the generator. While supplying power, the frequency of the corresponding flywheel is also detected. The frequency of the flywheel is proportional to the frequency of the output voltage. The frequency of the flywheel is measured, and the rotation speed of the generator and the frequency of the output voltage are calculated. The calculated values ​​are used to protect the generator. When the generator operates normally within the specified range, the frequency protection does not operate. When the generator set is overclocked or underclocked, the generator fault output point is activated to stop the generator.

7. The method for using the novel analog voltage regulator according to claim 6, characterized in that: The specific steps are as follows: After the generator starts, the voltage rises slowly in rhythm. The entire startup time and the amplitude of the rise can be set by the computer host software. The generator starts stably. When the load is connected: when the power of the load is less than 110% of the rated power of the generator, the generator is in constant voltage mode; When the connected load is not less than 110% of the rated power of the generator, the generator enters the constant power mode; in the constant power mode, the voltage of the generator decreases accordingly. The greater the power, the lower the voltage. The constant power mode is mostly used to start inductive loads to a greater extent. When loading inductive loads, the load power will increase a lot instantly. After the inductive load stabilizes, the load power will be at the rated power level of the load. The voltage regulator has a reserved RS485 serial port, and the protocol is the industrial ModBus_RTU standard protocol and instruction code. The current, voltage, power, power factor, cumulative running time and other data are directly displayed on the display. Through the RS485 serial port and the computer host software connection, the AVR voltage regulator data and generator operating status can be fully obtained; The AVR voltage regulator reserves one passive switch output, which is suitable for low-power fault linkage or alarm equipment.

8. The method for using the novel analog voltage regulator according to claim 7, characterized in that: When the AVR voltage regulator triggers the fault mechanism, it will take protective measures for the generator. The fault protection trigger mechanism can be set by the host computer to ignore, pre-warning, and warning. When set to ignore, the corresponding protection function will be canceled; when set to pre-warning, the protection mechanism will be triggered and the fault output will not operate; when set to warning, the alarm mechanism will be triggered, the machine will be shut down at the same time, and the fault relay will be output.

9. The method for using the novel analog voltage regulator according to claim 8, characterized in that: Among the protection functions, the functional protections involved include: EEPROM protection, undervoltage protection, overvoltage protection, capacitor overvoltage protection, phase loss protection, three-phase imbalance protection, overload protection, overcurrent protection, overfrequency protection, underfrequency protection, and overtemperature protection.

10. The method for using the novel analog voltage regulator according to claim 9, characterized in that: EEPROM protection: When the generator is started, the power-off saved data is read. When no data is read or the calibration of the read data fails, the EEPROM protection is triggered. The set EEPROM protection mechanism is alarm, and the parameters in the AVR voltage regulator are set to the factory data. Undervoltage protection: After the machine runs stably, when the continuously measured phase voltage is less than the set value, the undervoltage protection mechanism is triggered, the machine stops and a fault output is generated; Overvoltage protection: After the machine is running stably, when the continuously measured phase voltage is greater than the set value, the overvoltage protection mechanism is triggered, the machine is shut down and a fault output is generated; Capacitor overvoltage protection: After the machine is running stably, when the continuously measured capacitor voltage is greater than the set value, the capacitor overvoltage protection mechanism is triggered, the machine is shut down and a fault output is generated; Phase loss protection: After the machine is running stably, if the continuously measured phase voltage is less than the set value, it is considered as phase loss by default, triggering the phase loss protection mechanism, shutting down and outputting a fault. Three-phase unbalance protection: After the machine runs stably, if the absolute value of the three-phase voltage difference measured continuously is greater than the set value, it is considered three-phase unbalance by default, triggering the three-phase unbalance protection mechanism, shutting down and outputting a fault simultaneously; Overload protection: After the machine runs stably, when the continuously measured effective power is greater than the rated power but less than 110% of the rated power, the overload protection mechanism is triggered, the serial port sends out a warning sign, and the fault output does not operate. After the machine runs stably, when the continuously measured effective power is not less than 110% of the rated power, the overload protection mechanism is triggered, the machine is shut down and the fault output is activated; Overcurrent protection: After the machine runs stably, when the continuously measured effective power is greater than the rated power and less than 150% of the rated current, the overcurrent protection mechanism is triggered, the serial port sends out a warning sign, and the fault output does not operate. After the machine runs stably, when the continuously measured effective power is not less than 150% of the rated power, the overcurrent protection mechanism is triggered, the machine is shut down and the fault output is output; Overclocking protection: After the machine is running stably, if the continuously measured frequency is not less than the set maximum frequency protection value, the overclocking protection mechanism is triggered, the machine is shut down and a fault output is generated; Under-frequency protection: After the machine runs stably, if the continuously measured frequency is not greater than the set frequency protection minimum value, the over-frequency protection mechanism is triggered, and the machine is shut down and a fault output is generated; Over-temperature protection: After the machine runs stably, if the continuously measured shell temperature is not less than the set temperature protection maximum value, the over-temperature protection mechanism is triggered, the machine shuts down and a fault output is generated.

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