CN101001070A - Voltage regulator of AC generator - Google Patents
Voltage regulator of AC generator Download PDFInfo
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- CN101001070A CN101001070A CNA2006101616942A CN200610161694A CN101001070A CN 101001070 A CN101001070 A CN 101001070A CN A2006101616942 A CNA2006101616942 A CN A2006101616942A CN 200610161694 A CN200610161694 A CN 200610161694A CN 101001070 A CN101001070 A CN 101001070A
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Abstract
This invention relates to a voltage adjuster of an AC generator including a virtual value and its mean value evaluation circuit of three-phase voltage, a voltage primary circuit, a voltage ring comparing adjuster, a current ring comparing adjuster, a PWM generation and drive circuit, an excitation current limit and protection circuit, a load current limit circuit, in which, said voltage adjuster can realize the feedback control of the virtual value of the output voltage with the functions of feed back control of excitation current, load current limit, limit of excitation current and overcurrent protection.
Description
One, technical field
The present invention relates to a kind of highly integrated field effect tubular type alternator voltage regulator, be particularly suitable for the use under 115V/200V three-phase alternating currents such as aircraft, tank, panzer power supply system with functions such as exciting current FEEDBACK CONTROL, the restriction of high precision load electric current, exciting current restriction, exciting current overcurrent protections.
Two, background technology
Generator voltage controller is the vitals on aircraft, naval vessel and the vehicle, is paid attention to by production division always.Advantage such as volume is little, in light weight, loss is little because of having for switch tubular type generator voltage controller, pressure regulation precision height and dynamic response are fast is used widely.
Switch tubular type alternator voltage regulator adopts instrument transformer that three-phase output voltage is sampled usually, and then controls exciter current of generator and then make generator output voltage stable through the break-make of circuit controling switch pipes such as conditioning, error amplification, PWM generation, driving.Two kinds of methods are generally arranged: a kind of is that rectification, filtering obtain DC feedback and dc reference and hand over to cut with triangular wave again after relatively and produce a PWM ripple and come the driving switch pipe behind the sampling three-phase output voltage, another kind be make it after the rectification shaping become the triangular wave feedback directly and the dc reference friendship intercept the PWM ripple and come the driving switch pipe.These methods all are to come the regulated output voltage effective value with the output voltage average value negative feedback, the output voltage effective value are not directly stablized control.First method needs rectifying device and big capacitor filtering, if will reduce ripple also must adopt full-bridge rectification, also will strengthen capacitance simultaneously.This not only increases and increased device makes generator voltage controller become big, becomes heavy, and the variation of output voltage frequency directly has influence on the size of feedback signal ripple.Second method needs rectifying device equally, and its switching frequency is fully by the output voltage frequency decision, and to generator output waveform requirement height, when inserting high reactive load, the voltage regulation result of voltage regulator will inevitably variation.Therefore, traditional switch tubular type alternator voltage regulator can not guarantee the high pressure regulation precision of all situations.In the variable speed generation system, generator speed constantly changes with engine speed especially, and voltage regulator pressure regulation precision just constantly changes, and the generator output voltage ripple will become greatly, and voltage regulation result can not get guaranteeing.The dynamo-electric voltage regulator of generation current is to adopt discrete component to realize mostly, and its defencive function, the load current limit function is improved inadequately or too simple.It is bigger that discrete component is influenced by environment, the accuracy of manufacture, and this just causes pressure regulation precision and the protection point and the load current limit curve instability of generator voltage controller.
Three, summary of the invention
The objective of the invention is to solve the problem that prior art exists, the highly integrated field effect tubular type alternator voltage regulator of functions such as a kind of real realization output voltage effective value FEEDBACK CONTROL, exciting current FEEDBACK CONTROL, the restriction of high precision load electric current, exciting current restriction and exciting current overcurrent protection is provided.
Realize that the technical scheme that above purpose adopts is: the error signal that the mean value of the three-phase voltage effective value that sample conversion obtains and benchmark are relatively regulated the gained Voltage loop is relatively regulated the error signal that obtains electric current loop as the given of exciting current and exciting current feedback signal, and then hands over triangular wave and to intercept PWM ripple driving switch pipe and regulate exciting current indirect regulation output voltage and make it stable.Load current limit is to realize that by the current potential that the load current sampled signal influences Voltage loop adjuster input restriction of exciting current electric current and protection are all by stoping PWM output to realize.
The concrete composition of alternating current generator voltage regulator of the present invention is: the average voltage signal of the three-phase voltage effective value that the three-phase voltage feedback signal obtains through three-phase voltage effective value testing circuit and mean value solving circuit and the voltage signal that produces by reference voltage circuit all simultaneously the input voltage chain rate than adjuster, the output of this Voltage loop comparison adjuster is connected in the relatively input of adjuster of electric current loop, and the output of this electric current loop comparator is connected in the PWM generation and drive circuit produces pwm signal; The load current feedback signal is connected in relatively adjuster of above-mentioned Voltage loop through the load current limit circuit; The exciting current feedback signal is sent into above-mentioned electric current loop relatively adjuster and exciting current restriction and protective circuit respectively, and the output of this exciting current restriction and protective circuit is connected in PWM and takes place and drive circuit.
Part and advantage were before the present invention was different from:
1. adopt effective value detection chip the converting the direct current signal that equates with its effective value to proportional three tunnel AC signal of three-phase voltage and exporting of dividing potential drop gained of will sample, try to achieve by addition ratio amplifying circuit again and the proportional direct current signal of three-phase voltage effective value mean value is exported.So just realized real output voltage effective value FEEDBACK CONTROL, and precision height, good stability, saved the rectifying and wave-filtering link simultaneously, alleviated controller weight.
2. adopt voltage, electric current dicyclo to regulate, realize exciting current self-regulation, fast to suppressing the exciting current disturbance velocity.
3. adopt integrated circuit to realize various functions.Wherein, circuit takes place and adopts integrated drive chips in electric current loop regulating circuit and PWM, and it is that core constitutes signal processing circuit that other each function mainly adopts integrated operational amplifier.So just improved reliability, weakened environment to the influence of controller, reduced the volume of controller.
Four, description of drawings
Fig. 1 alternator voltage regulator composition frame chart
Fig. 2 alternator voltage regulator circuit theory diagrams
Five, embodiment
Below in conjunction with Fig. 1 and Fig. 2 implementation method and operation principle are described in further detail:
Mutual inductor sample obtains generator three-phase voltage U, V, W respectively from port UA, port UB, port UC input, then by resistance R 1, resistance R 2, resistance R 4, resistance R 5 obtain the three-phase voltage sampled signal that the amplitude equal proportion diminishes after resistance R 7, resistance R 8 dividing potential drops.As, U is exported and the proportional direct voltage of output voltage effective value by effective value detection chip effective value detection chip J1, effective value detection chip J2 and effective value detection chip J3 from the input of UA end again.Wherein, capacitor C 1, capacitor C 2, capacitor C 3 play filter action, the ripple in can the filtering output dc voltage, improve computational accuracy.By the addition ratio amplifying circuit that integrated operational amplifier U1 and resistance R 10 ~ resistance R 15 constitute the direct voltage that the detection of three road effective values obtains is averaged.Finish the Voltage loop adjusting through integrated operational amplifier U3 and resistance R 22 ~ R27, resistance R 57 and capacitor C 10 formation pi regulators, reference voltage is provided, is adjusted through resistance R 25, resistance R 57 dividing potential drops by the integrated control chip of PWM.Electric current loop is relatively regulated with PWM generation circuit and is made of the integrated control chip of PWM and peripheral resistance, electric capacity.Resistance R 32, resistance R 33 and capacitor C 11 constitute triangular wave formation generation circuit with the oscillator of the integrated control chip of PWM inside, regulate resistance R 32, resistance R 33 and capacitor C 11 parameters and just can set the triangular wave frequency, can the determine switch frequency.The error amplifier of resistance R 27, resistance R 28, resistance R 31, capacitor C 13 and the integrated control chip of PWM inside constitutes pi regulator and finishes the electric current loop adjusting.In the integrated control chip of PWM inside, the error signal of error amplifier output and triangular wave obtain the output of PWM ripple, the reverser driving power pipe Q2 that constitutes through triode Q1 again through comparator.The input end capacitor C12 of the comparator of the integrated control chip of PWM inside makes the output of start back comparator rise gradually, has played the function of soft start.Exciting current passes through field effect transistor by F+, F-connection is flow through in the input of Lici end behind over-current sensor excitation winding, forms excitation main circuit.Wherein, diode D10 plays the afterflow effect, the filter action of capacitor C 17 excitation magnetoelectricities stream.Current sensor output obtains stable magnitude of voltage with the proportional electric current of exciting current through resistance R 30, isolates output and the proportional direct voltage of exciting current through the follower of integrated operational amplifier U4 and R29 formation again.Diode D9, diode D11 and AND of diode D12 formation, exciting current restriction and protective circuit can be imported triode Q1 through diode D9, diode D11 put the high PWM of blockade ripple, the shutoff field effect transistor plays restriction and protective effect.Constitute hysteresis comparator respectively as 2 times of restrictions of exciting current and 3 times of protective circuits by integrated operational amplifier U8, integrated operational amplifier U7.Wherein, the lower limit of integrated operational amplifier U8 hysteresis comparator saltus step is made as the safe current value, makes major loop recover operate as normal after so just can be in exciting current is got back to the place of safety.The lower limit of integrated operational amplifier U7 hysteresis comparator saltus step then is made as negative value, in case excitation main circuit is just turn-offed in protection, just can recover operate as normal after only restarting.And the exciting current protective circuit is also sent signal to the integrated control chip of PWM by diode D8, resistance R 55, resistance R 56 quits work the integrated control chip of PWM, has improved the reliability of protection.When load current just often, integrated operational amplifier U2 output is higher than integrated operational amplifier U6 output by the current potential that makes diode D6 negative electrode after resistance R 18, resistance R 19, resistance R 43, resistance R 44 dividing potential drops, pressure regulation is normal.When load current is excessive, integrated operational amplifier U6 output increases makes diode D6 conducting, improve the voltage of Voltage loop adjuster input, so just increased the error signal of exporting, reduced the PWM duty ratio, reduced exciting current, finally make output voltage reduce.Load current is big more, and it is many more that output voltage reduces, and this has just realized load current limit.
Claims (3)
1. alternator voltage voltage regulator, it is characterized in that, the average voltage signal of the three-phase voltage effective value that the three-phase voltage feedback signal obtains through three-phase voltage effective value testing circuit and mean value solving circuit and the voltage signal that produces by reference voltage circuit all simultaneously the input voltage chain rate than adjuster, the output of this Voltage loop comparison adjuster is connected in the relatively input of adjuster of electric current loop, and the output of this electric current loop comparator is connected in the PWM generation and drive circuit produces pwm signal; The load current feedback signal is connected in relatively adjuster of above-mentioned Voltage loop through the load current limit circuit; The exciting current feedback signal is sent into above-mentioned electric current loop relatively adjuster and exciting current restriction and protective circuit respectively, and the output of this exciting current restriction and protective circuit is connected in PWM and takes place and drive circuit.
2. alternator voltage voltage regulator according to claim 1, it is characterized in that, the three-phase voltage effective value detects and the mean value solving circuit is: the three-phase voltage feedback signal is input to effective value detection chip J1 separately respectively more respectively behind two divider resistances, J2 and J3 output and proportional three road direct voltages of output voltage effective value, this three road direct voltage is input to respectively more separately by integrated operational amplifier (U1) and the 10th to the 15th resistance (the addition ratio amplifying circuit of R10 ~ R15) formed, the 10th resistance (R10) wherein, the 11st resistance (R11), one end of three resistance of the 12nd resistance (R12) all links to each other with the anode of integrated operational amplifier (U1), the other end is connected in corresponding effective value detection chip respectively, one end of the 13rd resistance (R13) is connected in integrated operational amplifier (U1) anode equally, another termination " "; One end of the 14th resistance (R14) is connected in integrated operational amplifier (U1) negative terminal, another termination " "; The 15th resistance (R15) is connected in parallel between integrated operational amplifier (U1) negative terminal and the output.
3. alternator voltage regulator according to claim 1 and 2, it is characterized in that, Voltage loop is adjuster relatively, by integrated operational amplifier (U3) and the 22nd to the 27th, the 57th six resistance and the 10th electric capacity (C10) are formed, wherein the 22nd resistance (R22) is connected in integrated operational amplifier (U3) negative terminal, the 23rd resistance (R23) and a termination after the 25th resistance (R25) is connected " ", the other end is connected in integrated operational amplifier (U3) anode, and the series circuit that the 26th resistance (R26) is connected with the 10th electric capacity (C10) is connected in parallel between integrated operational amplifier (U3) negative terminal and the output; The 27th resistance (R27) is connected integrated operational amplifier (U3) output and electric current loop compares between the adjuster; One end of the 57th resistance (R57) is connected in the series connection point of the 23rd resistance (R23) and the 25th resistance (R25), and the other end is connected in relatively adjuster of electric current loop.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101616942A CN100438315C (en) | 2006-12-31 | 2006-12-31 | Voltage regulator of AC generator |
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| CNB2006101616942A CN100438315C (en) | 2006-12-31 | 2006-12-31 | Voltage regulator of AC generator |
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| CN100438315C CN100438315C (en) | 2008-11-26 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035453A (en) * | 2009-09-24 | 2011-04-27 | 本田技研工业株式会社 | Output control apparatus of generator |
| CN101968020B (en) * | 2009-07-28 | 2012-09-26 | 中国北车集团大连机车车辆有限公司 | Motor load soft start and speed regulating method for diesel generator set |
| CN102868289A (en) * | 2012-08-28 | 2013-01-09 | 北京曙光航空电气有限责任公司 | Current limiting circuit in generator voltage regulating circuit |
| CN103441724A (en) * | 2013-08-14 | 2013-12-11 | 南京航空航天大学 | Voltage regulation method applicable to frequency conversion alternating-current generator |
| CN105262353A (en) * | 2015-10-14 | 2016-01-20 | 北京曙光航空电气有限责任公司 | Voltage-regulating circuit of airborne three-phase AC generator controller |
| CN105471343A (en) * | 2015-12-16 | 2016-04-06 | 北京航天控制仪器研究所 | Excitation voltage regulator for claw-pole generator |
| CN107591789A (en) * | 2017-10-20 | 2018-01-16 | 陕西航空电气有限责任公司 | A kind of three phase variable frequency alternating current power-generating system over-voltage suppression device |
| CN108649844A (en) * | 2018-05-31 | 2018-10-12 | 南京航空航天大学 | A kind of brushless direct current power-generating system feed forward control method and control system |
| CN109842316A (en) * | 2019-03-08 | 2019-06-04 | 四川长虹集能阳光科技有限公司 | The double feed forward control method of DC-AC converter |
| CN110794328A (en) * | 2019-10-30 | 2020-02-14 | 汉中一零一航空电子设备有限公司 | Detection circuit and detection method for detecting overload or short-circuit fault |
| CN112398392A (en) * | 2020-11-13 | 2021-02-23 | 北京曙光航空电气有限责任公司 | Aviation ram air turbine emergency generator voltage regulation circuit based on multi-loop feedback |
| CN113261196A (en) * | 2019-02-01 | 2021-08-13 | 株式会社日立产机系统 | Power conversion device and control method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD277797A1 (en) * | 1988-12-05 | 1990-04-11 | Karl Marx Stadt Fahrzeugelek | CIRCUIT FOR CHANGE VOLTAGE REGULATORS IN SMALL-POWER VEHICLES WITH PERMANENTLY AC VOLTAGE GENERATORS |
| RU2120178C1 (en) * | 1997-08-04 | 1998-10-10 | Лев Григорьевич Галактионов | Voltage regulator of generator power supply |
| CN1159832C (en) * | 2002-02-07 | 2004-07-28 | 艾默生网络能源有限公司 | Inverter and output voltage control method |
| CN2722500Y (en) * | 2004-09-07 | 2005-08-31 | 刘爱军 | Voltage stabilizing controller of power generator |
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2006
- 2006-12-31 CN CNB2006101616942A patent/CN100438315C/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968020B (en) * | 2009-07-28 | 2012-09-26 | 中国北车集团大连机车车辆有限公司 | Motor load soft start and speed regulating method for diesel generator set |
| CN102035453A (en) * | 2009-09-24 | 2011-04-27 | 本田技研工业株式会社 | Output control apparatus of generator |
| CN102035453B (en) * | 2009-09-24 | 2013-01-16 | 本田技研工业株式会社 | Output control apparatus of generator |
| CN102868289A (en) * | 2012-08-28 | 2013-01-09 | 北京曙光航空电气有限责任公司 | Current limiting circuit in generator voltage regulating circuit |
| CN103441724A (en) * | 2013-08-14 | 2013-12-11 | 南京航空航天大学 | Voltage regulation method applicable to frequency conversion alternating-current generator |
| CN103441724B (en) * | 2013-08-14 | 2015-10-28 | 南京航空航天大学 | Be applicable to the voltage adjusting method of frequency conversion alternating-current generator |
| CN105262353B (en) * | 2015-10-14 | 2017-09-29 | 北京曙光航空电气有限责任公司 | A kind of regulating circuit of airborne threephase alternator controller |
| CN105262353A (en) * | 2015-10-14 | 2016-01-20 | 北京曙光航空电气有限责任公司 | Voltage-regulating circuit of airborne three-phase AC generator controller |
| CN105471343A (en) * | 2015-12-16 | 2016-04-06 | 北京航天控制仪器研究所 | Excitation voltage regulator for claw-pole generator |
| CN105471343B (en) * | 2015-12-16 | 2018-05-22 | 北京航天控制仪器研究所 | A kind of claw pole electric generator excitation voltage regulation device |
| CN107591789A (en) * | 2017-10-20 | 2018-01-16 | 陕西航空电气有限责任公司 | A kind of three phase variable frequency alternating current power-generating system over-voltage suppression device |
| CN108649844A (en) * | 2018-05-31 | 2018-10-12 | 南京航空航天大学 | A kind of brushless direct current power-generating system feed forward control method and control system |
| CN108649844B (en) * | 2018-05-31 | 2021-07-27 | 南京航空航天大学 | Feedforward control method and control system for brushless direct current power generation system |
| CN113261196A (en) * | 2019-02-01 | 2021-08-13 | 株式会社日立产机系统 | Power conversion device and control method thereof |
| CN109842316A (en) * | 2019-03-08 | 2019-06-04 | 四川长虹集能阳光科技有限公司 | The double feed forward control method of DC-AC converter |
| CN110794328A (en) * | 2019-10-30 | 2020-02-14 | 汉中一零一航空电子设备有限公司 | Detection circuit and detection method for detecting overload or short-circuit fault |
| CN112398392A (en) * | 2020-11-13 | 2021-02-23 | 北京曙光航空电气有限责任公司 | Aviation ram air turbine emergency generator voltage regulation circuit based on multi-loop feedback |
| CN112398392B (en) * | 2020-11-13 | 2022-09-06 | 北京曙光航空电气有限责任公司 | Voltage regulating circuit of aviation ram air turbine emergency generator based on multi-ring feedback |
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| CN100438315C (en) | 2008-11-26 |
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