CN109347383B - Self-adaptive compensator and high-voltage direct-current generator voltage regulation control system thereof - Google Patents
Self-adaptive compensator and high-voltage direct-current generator voltage regulation control system thereof Download PDFInfo
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- CN109347383B CN109347383B CN201811269066.5A CN201811269066A CN109347383B CN 109347383 B CN109347383 B CN 109347383B CN 201811269066 A CN201811269066 A CN 201811269066A CN 109347383 B CN109347383 B CN 109347383B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
- H02P9/105—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for increasing the stability
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
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Abstract
The application belongs to generator voltage regulation controlling means field, in particular to self-adaptation compensator includes: the compensation signal generation module is used for detecting the real-time voltage of the negative end of the generator excitation winding, generating a compensation signal according to the real-time voltage and outputting the compensation signal; the compensation control module is used for detecting the real-time current of the load of the generator, generating a control signal according to the real-time current and outputting the control signal; the compensation signal output module receives the control signal, and the compensation signal output module has the following functions according to the received control signal: an on state and an off state; when the compensation signal output module is in a conducting state, the compensation signal output module can receive a compensation signal and output the compensation signal; the voltage regulation control system of the high-voltage direct-current generator comprising the self-adaptive compensator can effectively solve the problems of low-rotating-speed unloading voltage recovery overtime and high-rotating-speed unloading voltage overshoot of a high-voltage direct-current power supply system.
Description
Technical Field
The application belongs to the field of generator voltage regulation control devices, and particularly relates to a self-adaptive compensator and a high-voltage direct-current generator voltage regulation control system.
Background
At the present stage, the number of electric equipment on the aircraft is increased continuously, and the functions and the performance of the electric equipment are enhanced continuously, so that the power supply quality of a power supply system is higher by an on-board power grid, and the requirements on voltage impact, waveform distortion, instantaneous harmonic waves and the like in the power supply output electric energy are stricter; the diversification of the load characteristics of the on-board electric equipment also provides new requirements for the external load characteristics and the on-load capacity of the power supply system, and the power supply system is required to have higher voltage regulation performance and safety margin under the condition of load transient on the basis of stable and reliable operation; in addition, the grade of the on-board electric equipment is gradually increased, and the on-board power grid load current inevitably changes greatly in the load switching process, so that the problem of ensuring the output quality of the electric energy of the power supply system in the load transient process also becomes a concern.
Currently, 270VDC high voltage direct current power supply mechanism is mostly adopted on the machine to supply power to the power grid on the machine, which adopts a control system as shown in fig. 1, including:
the filtering conditioner is used for acquiring voltage signals of voltage regulation points of the main generator, filtering and conditioning the voltage signals to obtain filtered and conditioned voltage signals and outputting the filtered and conditioned voltage signals;
the carrier signal loader is used for receiving the filtering conditioning voltage signal and the carrier signal, adding the filtering conditioning voltage signal and the carrier signal to obtain a carrier loading signal and outputting the carrier loading signal;
the fixed reference comparator receives the carrier loading signal and the fixed reference level signal, compares the carrier loading signal with the fixed reference level signal to generate an error signal, and outputs the error signal;
the PI regulator receives the error signal, performs proportional-integral processing on the error signal to generate a modulation signal, and outputs the modulation signal;
a PWM generator for receiving the modulation signal, generating a PWM signal according to the modulation signal, and outputting the PWM signal;
the power amplifier receives the PWM signal, performs power amplification on the PWM signal to generate a driving voltage signal, and outputs the driving voltage signal;
the exciter receives the driving voltage signal, and the magnetic field is switched on or off according to the driving voltage signal, so that the current on the exciting winding of the exciter is controlled.
For a 270VDC high-voltage direct-current power supply mechanism, the control mode is adopted, the voltage regulation function of a load of a steady-state on-load generator under a small-amplitude transient condition can be realized, but the electromagnetic property of a main generator and the configuration of a power supply system determine that the power supply system of the power supply mechanism has larger hysteresis, the transient response speed controlled by a PI regulation unit in the control mode is slower relative to the load change, the demagnetization is slower when the magnetic saturation of the generator is higher and the voltage recovery time is longer under the low rotating speed, and the transient voltage overshoot is larger when the magnetic saturation of the generator is lower under the high rotating speed; in addition, compared with steady-state on-load power generation, the system voltage regulation characteristic in the load transient process is weaker, serious hidden danger is caused to the safety of the on-board power grid, and the requirement of the on-board power grid on high-performance regulation of a power system is difficult to meet.
Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The present application is directed to an adaptive compensator and a voltage regulation control system for a hvdc generator, which overcome or alleviate at least one of the above-mentioned disadvantages.
The technical scheme of the application is as follows:
one aspect provides an adaptive compensator, comprising:
the compensation signal generation module is used for detecting the real-time voltage of the negative end of the generator excitation winding, generating a compensation signal according to the real-time voltage and outputting the compensation signal;
the compensation control module is used for detecting the real-time current of the load of the generator, generating a control signal according to the real-time current and outputting the control signal;
the compensation signal output module receives the control signal, and the compensation signal output module has the following functions according to the received control signal: an on state and an off state; wherein the content of the first and second substances,
when the compensation signal output module is in a conducting state, the compensation signal output module can receive the compensation signal and output the compensation signal.
Optionally, the compensation signal generation module comprises: the voltage detection unit is used for detecting the real-time voltage of the negative end of the generator excitation winding;
and the compensation signal generating unit generates a compensation signal according to the real-time voltage detected by the voltage detecting unit and outputs the compensation signal.
Optionally, the voltage detection unit includes:
one end of the eleventh resistor is used for being connected with the negative end of the generator excitation winding and is called an eleventh resistor detection end, and the other end of the eleventh resistor is called an eleventh resistor connection end;
one end of the fourth capacitor is connected with the eleventh resistor connecting end;
one end of the twelfth resistor is connected with the other end of the fourth capacitor;
one end of the third capacitor is connected with the connecting end of the eleventh resistor, and the other end of the third capacitor is grounded;
the compensation signal generation unit includes:
one end of the thirteenth resistor is connected with the other end of the twelfth resistor;
the reverse input end of the fourth operational amplifier is connected with the other end of the thirteenth resistor, the same-direction input end of the fourth operational amplifier is grounded, and the output end of the fourth operational amplifier is connected with the compensation signal output module;
and the fourteenth resistor is arranged in parallel at the inverting input end and the output end of the fourth operational amplifier.
Optionally, the control signal includes an on control signal and an off control signal;
when the control signal received by the compensation signal output module is a conduction control signal, the compensation signal output module is in a conduction state; when the control signal received by the compensation signal output module is a closing control signal, the compensation signal output module is in a closing state;
the compensation control module generates a control signal according to the real-time current, and specifically comprises the following steps:
if the instantaneous variation of the real-time current exceeds a preset threshold, the control signal generated by the compensation control module is a conduction control signal;
otherwise, the control signal generated by the compensation control module is a closing control signal.
Optionally, the compensation control module comprises:
one end of the first capacitor is used for being connected with a circuit of a load and is called as a first capacitor detection end;
the inverting input end of the first operational amplifier is connected with the other end of the first capacitor;
one end of the fifth resistor is connected with the homodromous input end of the first operational amplifier, and the other end of the fifth resistor is grounded;
one end of the second resistor is connected with the output end of the first operational amplifier;
the same-direction input end of the second operational amplifier is connected with the other end of the second resistor;
one end of the sixth resistor is connected with the output end of the second operational amplifier;
the homodromous input end of the third operational amplifier is connected with the other end of the sixth resistor, and the output end of the third operational amplifier is connected with the compensation signal output module;
one end of the seventh resistor is used for being connected with a circuit of the load and is called a seventh resistor detection end, and the other end of the seventh resistor is called a seventh resistor connecting end;
one end of the eighth resistor is connected with the connecting end of the seventh resistor, and the other end of the eighth resistor is connected with the reverse input end of the third operational amplifier;
one end of the second capacitor is connected with the connection end of the seventh resistor, and the other end of the second capacitor is grounded;
the first resistor is arranged in parallel at the inverting input end and the output end of the first operational amplifier;
the third resistor is arranged in parallel at the inverting input end and the output end of the second operational amplifier;
one end of the fourth resistor is connected with the reverse input end of the second operational amplifier, and the other end of the fourth resistor is grounded;
and the ninth resistor is arranged in parallel at the equidirectional input end and the output end of the third operational amplifier.
Optionally, the compensation signal output module includes:
one end of the fifteenth resistor is connected with the output end of the fourth operational amplifier;
one end of the tenth resistor is connected with the output end of the third operational amplifier;
the drain electrode of the MOS tube is connected with the other end of the fifteenth resistor, and the gate electrode of the MOS tube is connected with the other end of the tenth resistor;
one end of the compensation signal output circuit is connected with the output end of the MOS tube and is called a compensation signal output circuit connecting end, and the other end of the compensation signal output circuit is called a compensation signal output circuit output end; the compensation signal output circuit is used for outputting a compensation signal.
Optionally, the compensation signal output module further includes a zener diode, a cathode of the zener diode is connected to the compensation signal output circuit, and an anode of the zener diode is grounded.
Another aspect provides a high voltage dc generator voltage regulation control system, and high voltage dc generator includes permanent magnet machine, exciter and main generator, includes:
the filtering conditioner is used for acquiring voltage signals of voltage regulation points of the main generator, filtering and conditioning the voltage signals to obtain filtered and conditioned voltage signals and outputting the filtered and conditioned voltage signals;
the carrier signal loader is used for receiving the filtering conditioning voltage signal and the carrier signal, adding the filtering conditioning voltage signal and the carrier signal to generate a carrier loading signal and outputting the carrier loading signal;
the fixed reference comparator receives the carrier loading signal and the fixed reference level signal, compares the carrier loading signal with the fixed reference level signal to generate an error signal, and outputs the error signal;
the PI regulator receives the error signal, performs proportional-integral processing on the error signal to generate a modulation signal, and outputs the modulation signal;
in any of the self-adaptive compensators, the eleventh resistance detection end is connected with the generator exciter, the first capacitance detection end is connected with a circuit of a main generator load, the seventh resistance detection end is connected with a circuit of the main generator load, and the compensation signal output circuit outputs a compensation signal;
the compensation signal loader is used for receiving the modulation signal and the compensation signal and adding the modulation signal and the compensation signal to generate a modulation compensation signal;
the PWM generator is used for receiving the modulation compensation signal, generating a PWM signal according to the modulation compensation signal and outputting the PWM signal;
the power amplifier receives the PWM signal, performs power amplification on the PWM signal to generate a driving voltage signal, and outputs the driving voltage signal;
the exciter receives the driving voltage signal and turns on or off the magnetic field according to the driving voltage signal.
The application has at least the following beneficial technical effects: the high-voltage direct-current legal system comprises the adaptive compensator, a compensation control module is used for detecting real-time current of a generator load, under the condition that load current is transient, an alternating current pulse component of voltage at the negative end of a generator excitation winding is used as a positive feedback compensation signal and added with a modulation signal generated by a PI regulator to obtain a modulation compensation signal, and the modulation compensation signal is used as an input signal of PWM (pulse width modulation). The voltage regulation control device has the advantages that the high-voltage direct-current power generation system has high-precision steady-state voltage regulation and high-performance transient regulation capability, the transient regulation capability of the high-voltage direct-current power generation system is improved, the problems of low-rotating-speed unloading voltage recovery overtime and high-rotating-speed unloading voltage overshoot of the high-voltage direct-current power generation system are solved, large voltage oscillation possibly occurring in the load power flow switching process is avoided, and the transient performance and the system margin of the high-voltage direct-current power generation system are enhanced.
Drawings
FIG. 1 is a schematic diagram of a voltage regulation control system of a prior art HVDC generator;
FIG. 2 is a schematic diagram of an adaptive compensator according to the present application;
fig. 3 is a schematic structural diagram of a voltage regulation control system of the high-voltage direct-current generator.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.
The present application is described in further detail below with reference to fig. 1 to 3.
One aspect provides an adaptive compensator comprising:
the compensation signal generation module is used for detecting the real-time voltage of the negative end of the generator excitation winding, generating a compensation signal according to the real-time voltage and outputting the compensation signal;
the compensation control module is used for detecting the real-time current of the load of the generator, generating a control signal according to the real-time current and outputting the control signal;
the compensation signal output module receives the control signal, and the compensation signal output module has the following functions according to the received control signal: an on state and an off state; wherein the content of the first and second substances,
when the compensation signal output module 3 is in a conducting state, it can receive the compensation signal and output the compensation signal.
Further, the compensation signal generation module includes: the voltage detection unit is used for detecting the real-time voltage of the negative end of the generator excitation winding; and a compensation signal generating unit for generating a compensation signal according to the real-time voltage detected by the voltage detecting unit 11 and outputting the compensation signal.
Further, the voltage detection unit includes: an eleventh resistor R11, one end of which is used for connecting with the exciter winding of the generator and is called as an eleventh resistor detection end, and the other end of which is called as an eleventh resistor connection end; one end of the fourth capacitor C4 is connected with the eleventh resistor connection end; a twelfth resistor R12 having one end connected to the other end of the fourth capacitor C4; one end of the third capacitor C3 is connected with the eleventh resistor connecting end, and the other end of the third capacitor C3 is grounded;
the compensation signal generation unit includes:
a thirteenth resistor R13, one end of which is connected to the other end of the twelfth resistor R12; a fourth operational amplifier N4, an inverting input terminal of which is connected to the other end of the thirteenth resistor R13, a homonymous input terminal of which is grounded, and an output terminal of which is connected to the compensation signal output module 3; the fourteenth resistor 14 is connected in parallel to the inverting input terminal and the output terminal of the fourth operational amplifier N4.
Further, the control signal comprises an on control signal and an off control signal; when the control signal received by the compensation signal output module is a conduction control signal, the compensation signal output module is in a conduction state; when the control signal received by the compensation signal output module is a closing control signal, the compensation signal output module is in a closing state;
the compensation control module generates a control signal according to the real-time current, and specifically comprises the following steps: if the instantaneous variation of the real-time current exceeds a preset threshold, the control signal generated by the compensation control module 2 is a conduction control signal; otherwise, the control signal generated by the compensation control module 2 is a closing control signal.
Further, the compensation control module 2 includes: a first capacitor C1, one end of which is used for being connected with the circuit of the load and is called a first capacitance detection end; a first operational amplifier N1, an inverting input terminal of which is connected to the other terminal of the first capacitor C1; one end of the fifth resistor R5 is connected with the equidirectional input end of the first operational amplifier N1, and the other end is grounded; a second resistor R2, one end of which is connected to the output end of the first operational amplifier N1; a second operational amplifier N2, the same-direction input end of which is connected with the other end of the second resistor R2; a sixth resistor R6, one end of which is connected to the output end of the second operational amplifier N2; a third operational amplifier R3, the same-direction input end of which is connected to the other end of the sixth resistor, and the output end of which is connected to the compensation signal output module 3; one end of the seventh resistor R7 is used for being connected with a circuit of the load and is called a seventh resistor detection end, and the other end of the seventh resistor R7 is called a seventh resistor connection end; an eighth resistor R8, one end of which is connected with the seventh resistor connection end and the other end of which is connected with the inverting input end of the third operational amplifier R3; one end of the second capacitor C2 is connected with the seventh resistor connecting end, and the other end of the second capacitor C2 is grounded; a first resistor R1 connected in parallel between the inverting input terminal and the output terminal of the first operational amplifier N1; a third resistor R3 connected in parallel between the inverting input terminal and the output terminal of the second operational amplifier N2; a fourth resistor R4, one end of which is connected to the inverting input terminal of the second operational amplifier N2, and the other end of which is grounded; and the ninth resistor R9 is arranged in parallel between the homodromous input end and the output end of the third operational amplifier N3.
Further, the compensation signal output module includes: a fifteenth resistor R15, one end of which is connected to the output end of the fourth operational amplifier N4; a tenth resistor R10, one end of which is connected to the output end of the third operational amplifier N3; a MOS transistor V1, the drain of which is connected to the other end of the fifteenth resistor R15, and the gate of which is connected to the other end of the tenth resistor R10; one end of the compensation signal output circuit is connected with the output end of the MOS transistor V1 and is called a compensation signal output circuit connecting end, and the other end of the compensation signal output circuit is called a compensation signal output circuit output end; the compensation signal output circuit is used for outputting a compensation signal.
Furthermore, the compensation signal output module 3 further includes a zener diode V2, a cathode of which is connected to the compensation signal output circuit, and an anode of which is grounded.
The self-adaptive compensator compensation signal generation module takes the real-time voltage of the negative end of the generator excitation winding as an input signal, and distributes a real-time alternating current component of the negative voltage average value of the sensitive magnetic field to a first inverting amplifier consisting of a fourth operational amplifier N4, a thirteenth resistor R13 and a fourteenth resistor R14 through a resistance-capacitance network consisting of an eleventh resistor R11, a third capacitor C3, a fourth capacitor C4 and a twelfth resistor R12, wherein the real-time alternating current component of the negative voltage average value of the sensitive magnetic field is output by the first inverting amplifier.
The adaptive compensator compensation control module is used for detecting the real-time loading state of the generator, a load current signal in a voltage value form enters the inverting terminal of the first operational amplifier N1 through the first capacitor C1 and is fed back through the first resistor R1, the circuit can sense the sudden change of the voltage value in the process of sudden load current addition and sudden load current unloading and output a sudden change level, and the sudden change level generates a sudden change detection value of the load signal through the first in-phase amplifier formed by the second resistor R2, the third resistor R3, the fourth R4 and the second operational amplifier N2; the compensation control module senses load current through a seventh resistor R7 and a second capacitor C2, and transmits the load current to a differential operational amplifier formed by a third operational amplifier N3, a sixth resistor R6, an eighth resistor R8 and a ninth resistor R9 to carry out differential amplification on a load signal mutation detection value, and the differential amplifier outputs a control signal; when the instantaneous variation of the real-time current of the load exceeds a preset threshold, the differential amplifier outputs a high level corresponding to the conduction control signal; when the instantaneous change amount of the real-time current of the load does not exceed a preset threshold, the differential amplifier outputs a low level corresponding to a closing control signal.
The drain electrode of the MOS transistor V1 is connected with the first inverting amplifier through a fifteenth resistor R15 so as to receive a compensation signal; the gate of the MOS transistor V1 is connected to the differential amplifier through the tenth resistor R10 to receive the control signal, and when the differential amplifier outputs a high level, the MOS transistor V1 is turned on to output the compensation signal.
As for the adaptive compensator, those skilled in the art will readily understand that the types and parameters of the resistors, capacitors, and operational amplifiers should be selected and set according to actual requirements to ensure effective implementation of their functions.
Another aspect provides a high voltage dc generator voltage regulation control system, and high voltage dc generator includes permanent magnet machine, exciter and main generator, includes: the filtering conditioner is used for acquiring voltage signals of voltage regulation points of the main generator, filtering and conditioning the voltage signals to obtain filtered and conditioned voltage signals and outputting the filtered and conditioned voltage signals; the carrier signal loader is used for receiving the filtering conditioning voltage signal and the carrier signal, adding the filtering conditioning voltage signal and the carrier signal to generate a carrier loading signal and outputting the carrier loading signal; the fixed reference comparator receives the carrier loading signal and the fixed reference level signal, compares the carrier loading signal with the fixed reference level signal to generate an error signal, and outputs the error signal; the PI regulator receives the error signal, performs proportional-integral processing on the error signal to generate a modulation signal, and outputs the modulation signal; in any of the self-adaptive compensators, the eleventh resistance detection end is connected with the generator exciter, the first capacitance detection end is connected with a circuit of a main generator load, the seventh resistance detection end is connected with a circuit of the main generator load, and the compensation signal output circuit outputs a compensation signal; the compensation signal loader is used for receiving the modulation signal and the compensation signal and adding the modulation signal and the compensation signal to generate a modulation compensation signal; the PWM generator is used for receiving the modulation compensation signal, generating a PWM signal according to the modulation compensation signal and outputting the PWM signal; the power amplifier receives the PWM signal, performs power amplification on the PWM signal to generate a driving voltage signal, and outputs the driving voltage signal; the exciter receives the driving voltage signal and turns on or off the magnetic field according to the driving voltage signal.
In the high-voltage direct-current generator voltage regulation control system, on the basis of current PI regulation, the self-adaptive compensator introduces a compensation signal as a part of an input signal of the PWM generator, so that the advanced control of the voltage regulation of the generator is realized, and in the unloading process of a power supply system, the sudden change of the suppressed voltage accelerates the response speed of the power supply system and improves the transient response characteristic. When the high-voltage direct-current power generation system is loaded or works normally, the self-adaptive compensator does not work, and the system still performs adjustment control according to the original voltage loop.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (5)
1. An adaptive compensator, comprising:
the compensation signal generation module is used for detecting the real-time voltage of the negative end of the generator excitation winding, generating a compensation signal according to the real-time voltage and outputting the compensation signal;
the compensation control module is used for detecting the real-time current of the load of the generator, generating a control signal according to the real-time current and outputting the control signal;
a compensation signal output module for receiving the control signal, wherein the compensation signal output module has the following functions according to the received control signal: an on state and an off state; wherein the content of the first and second substances,
when the compensation signal output module is in the conducting state, the compensation signal output module can receive the compensation signal and output the compensation signal;
the compensation signal generation module includes:
the voltage detection unit is used for detecting the real-time voltage of the negative end of the generator excitation winding;
a compensation signal generating unit for generating the compensation signal according to the real-time voltage detected by the voltage detecting unit and outputting the compensation signal;
the voltage detection unit (11) includes:
an eleventh resistor (R11), one end of which is used for being connected with the negative end of the generator excitation winding and is called an eleventh resistor detection end, and the other end of which is called an eleventh resistor connection end;
a fourth capacitor (C4) having one end connected to the eleventh resistor connection terminal;
a twelfth resistor (R12) having one end connected to the other end of the fourth capacitor (C4) and the other end connected to the compensation signal generation unit;
a third capacitor (C3), one end of which is connected to the eleventh resistor connection end and the other end of which is grounded;
the compensation signal generation unit (12) comprises:
a thirteenth resistor (R13) having one end connected to the end of the twelfth resistor (R12) remote from the fourth capacitor (C4);
a fourth operational amplifier (N4), the inverting input terminal of which is connected to the other end of the thirteenth resistor (R13), the inverting input terminal of which is grounded, and the output terminal of which is connected to the compensation signal output module (3);
a fourteenth resistor (14) connected in parallel to the inverting input terminal and the output terminal of the fourth operational amplifier (N4);
the control signal comprises a conduction control signal and a closing control signal; wherein the content of the first and second substances,
when the control signal received by the compensation signal output module is the conduction control signal, the compensation signal output module is in a conduction state;
when the control signal received by the compensation signal output module is the closing control signal, the compensation signal output module is in a closing state;
the compensation control module generates a control signal according to the real-time current, and specifically comprises the following steps:
if the instantaneous variation of the real-time current exceeds a preset threshold, the control signal generated by the compensation control module is a conduction control signal;
otherwise, the control signal generated by the compensation control module is a closing control signal.
2. The adaptive compensator of claim 1, wherein the compensation control module comprises:
a first capacitor (C1), one end of which is used for being connected with the circuit of the load and is called a first capacitance detection end;
a first operational amplifier (N1) having an inverting input connected to the other end of the first capacitor (C1);
a fifth resistor (R5) having one end connected to the unidirectional input terminal of the first operational amplifier (N1) and the other end grounded;
a second resistor (R2) having one end connected to the output end of the first operational amplifier (N1);
a second operational amplifier (N2) having a common input terminal connected to the other terminal of the second resistor (R2);
a sixth resistor (R6) having one end connected to the output end of the second operational amplifier (N2);
a third operational amplifier (R3), the same-direction input end of which is connected with the other end of the sixth resistor, and the output end of which is connected with the compensation signal output module (3);
a seventh resistor (R7), one end of which is used for connecting with the circuit of the load and is called a seventh resistor detection end, and the other end of which is called a seventh resistor connection end;
an eighth resistor (R8) having one end connected to the seventh resistor connection end and the other end connected to the inverting input terminal of the third operational amplifier (R3);
a second capacitor (C2), one end of which is connected to the seventh resistor connection end and the other end of which is grounded;
a first resistor (R1) disposed in parallel between the inverting input terminal and the output terminal of the first operational amplifier (N1);
a third resistor (R3) provided in parallel between the inverting input terminal and the output terminal of the second operational amplifier (N2);
a fourth resistor (R4) having one end connected to the inverting input terminal of the second operational amplifier (N2) and the other end grounded;
and the ninth resistor (R9) is arranged in parallel between the homodromous input end and the output end of the third operational amplifier (N3).
3. The adaptive compensator of claim 2, wherein the compensation signal output module comprises:
a fifteenth resistor (R15) having one end connected to the output end of the fourth operational amplifier (N4);
a tenth resistor (R10) having one end connected to the output end of the third operational amplifier (N3);
a MOS transistor (V1), the drain of which is connected to the other end of the fifteenth resistor (R15), and the gate of which is connected to the other end of the tenth resistor (R10);
one end of the compensation signal output circuit is connected with the output end of the MOS transistor (V1) and is called a compensation signal output circuit connecting end, and the other end of the compensation signal output circuit is called a compensation signal output circuit output end; the compensation signal output circuit is used for outputting the compensation signal.
4. The adaptive compensator of claim 3, wherein the compensation signal output module further comprises a zener diode (V2), the cathode of which is connected to the compensation signal output circuit, and the anode of which is grounded.
5. A high voltage direct current generator voltage regulation control system, high voltage direct current generator includes permanent-magnet machine, exciter and main generator, its characterized in that includes:
the filtering conditioner is used for collecting voltage signals of voltage regulation points of the main generator, filtering and conditioning the voltage signals to obtain filtered and conditioned voltage signals and outputting the filtered and conditioned voltage signals;
the carrier signal loader is used for receiving the filtering conditioning voltage signal and the carrier signal, adding the filtering conditioning voltage signal and the carrier signal to generate a carrier loading signal and outputting the carrier loading signal;
the fixed reference comparator is used for receiving the carrier loading signal and the fixed reference level signal, comparing the carrier loading signal with the fixed reference level signal to generate an error signal and outputting the error signal;
the PI regulator receives the error signal, performs proportional-integral processing on the error signal to generate a modulation signal, and outputs the modulation signal;
the adaptive compensator of any of claims 1-4, an eleventh resistive sensing terminal connected to the generator exciter, a first capacitive sensing terminal connected to the electrical circuit of the main generator load, a seventh resistive sensing terminal connected to the electrical circuit of the main generator load, a compensation signal output circuit outputting a compensation signal;
the compensation signal loader is used for receiving the modulation signal and the compensation signal and adding the modulation signal and the compensation signal to generate a modulation compensation signal;
the PWM generator is used for receiving the modulation compensation signal, generating a PWM signal according to the modulation compensation signal and outputting the PWM signal;
the power amplifier receives the PWM signal, performs power amplification on the PWM signal to generate a driving voltage signal, and outputs the driving voltage signal;
and the exciter receives the driving voltage signal and switches on or off the magnetic field according to the driving voltage signal.
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| CN201811269066.5A CN109347383B (en) | 2018-10-29 | 2018-10-29 | Self-adaptive compensator and high-voltage direct-current generator voltage regulation control system thereof |
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| CN109347383B true CN109347383B (en) | 2020-11-03 |
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| WO2007102203A1 (en) * | 2006-03-07 | 2007-09-13 | Mitsubishi Denki Kabushiki Kaisha | Output voltage controller for ac generator for vehicle |
| CN100559697C (en) * | 2006-08-18 | 2009-11-11 | 朋程科技股份有限公司 | The method of the output voltage of stable generator and the voltage regulator circuit of generator |
| US7797096B2 (en) * | 2006-08-31 | 2010-09-14 | Gm Global Technology Operations, Inc. | Torque estimation of engine driven generator |
| CN101141065A (en) * | 2007-06-08 | 2008-03-12 | 王仁飞 | Small hydroelectric power reactive power control system |
| KR101545253B1 (en) * | 2014-06-11 | 2015-08-21 | 한국전력공사 | Apparatus for controlling output voltage of ganerator without stator discharge resistor |
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