CN1027779C - Stabilizer for multi-phase synchronous generator with rectification load - Google Patents
Stabilizer for multi-phase synchronous generator with rectification load Download PDFInfo
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- CN1027779C CN1027779C CN 92113427 CN92113427A CN1027779C CN 1027779 C CN1027779 C CN 1027779C CN 92113427 CN92113427 CN 92113427 CN 92113427 A CN92113427 A CN 92113427A CN 1027779 C CN1027779 C CN 1027779C
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- generator
- control signal
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Abstract
The present invention relates to a stabilizer for a multi-phase synchronous generator with a rectification load; the present invention has a goal that the present invention ensures that the multi-phase synchronous generator (particularly a brushless excitation synchronous generator) can eliminate the natural vibration of a system generated by the improper parameter design of the generator for realizing stable operation when a signal machine rectificates and carry back electromotive force load or a plurality of machines are connected in parallel after rectificated and carries any load. The goals of the present invention are realized by the following modes that a current of a magnetic field of an excitation generator is directly controlled by the output of the stabilizer; the output voltage ud and a load current id are rectificated by a signal-table generator as a feedback signal calculated and amplified by an integral-differential (PID) circuit with a self-adapting proportion; thereby, an output power amplifier of the stabilizer is controlled.
Description
The present invention relates to heterogeneous (referring to that three-phase, six phases, 12 equate) synchronous generator stabilizing arrangement with rectification load.
The DC power supply power of aspect demands such as modern electric locomotive traction, oil drilling platform, post and telecommunications, power station, tunnel, naval vessel electric propulsion is increasing, and is more and more as DC power supply with the commutator formula DC generator that the polyphase synchronous generator of band bridge rectifier output is alternative traditional.Since the eighties, successively repeatedly find both at home and abroad: polyphase synchronous generator, the synchronous generator of heterogeneous brushless excitation particularly, after unit commutating zone counter electromotive force load (referring to DC motor, storage battery etc.) or multimachine rectification, in the system of band arbitrary load in parallel, may produce significantly intrinsic low frequency power oscillation.(for example, just run into such problem in Japanese fuji daily paper (Vol.56.No.2,1983) report Japan " rapids in vain " number ice breaker electric propulsion system development process.) inventor discovers: the electromagnetic parameter that adopts special construction suitably to control generator can make system avoid this vibration (seeing the patent of invention 92102441.X of issued for approval).Multiphase generator (particularly brushless excitation polyphase synchronous generator) for general structure can directly actuated object not be main generator magnetic field owing to excitation regulation device, but the magnetic field of coaxial excitation generator, the exciter inertial element makes the multiphase generator system exponent number of band rectification load increase, adjusting device time constant coupling difficulty is so common excitation regulation device is difficult to this natural oscillation of elimination system.
The objective of the invention is to provide a kind of stabilizer for multi-phase synchronous generator with rectification load, when arbitrary load is with in parallel connection after unit commutating zone counter electromotive force load or multimachine rectification with assurance polyphase synchronous generator (particularly brushless excitation synchronous generator), can eliminate owing to the improper system's natural oscillation that produces of generator parameter design, realize stable operation.
The objective of the invention is to realize as follows: stabilizing arrangement is the special excitation regulation device of a kind of multiphase generator, see accompanying drawing 1,2:(1) this excitation regulation device output control is not the magnetic field voltage of the excitation generator of common adjuster control, but directly control the field supply of excitation generator, thereby loop, exciter field equivalent time constant is reduced greatly, improved the response speed of brushless excitation system; (2) feedback signal of this excitation regulation device input adopts separate unit generator commutation output voltage u
dWith load current i
d(a) when the multiphase generator rectification is output as pressure constant state, the voltage feedback signal of process proportional integral circuit computing combines with the current feedback signal through the computing of self adaptation differential circuit, removes directly to control the field supply of excitation generator; (b) when the multiphase generator rectification is output as constant current state, use current feedback signal separately, through behind the adaptive proportional-integral-differential circuit computing, directly control the field supply of excitation generator.(c) adaptive control of this excitation unit is meant that the multiplication factor of current feedback can adapt to the variation of generator loading electric current automatically.(3) this device adopts the circuit that voltage/frequency converter (V/F) and frequency/voltage converter (F/V) combine with high speed photo coupling, has solved the anti-interference problem of direct voltage buffer circuit, has improved the operational precision of voltage feedback signal.These measures have solved the technological difficulties that polyphase synchronous generator commutation system restriction condition is many, performance requirement is high, system complex is brought effectively, guaranteed that this device can eliminate the system's natural oscillation that causes owing to generator parameter is improper, be implemented in stable operation in whole loading ranges, and other static state and the dynamic property of the system of assurance are unaffected.
The invention will be further described below in conjunction with accompanying drawing.Accompanying drawing 1(multiphase generator commutation system sketch) and accompanying drawing 2(stabilizing arrangement schematic diagram) be one embodiment of the present of invention.In the accompanying drawing 2: (1) linear power amplifier T3, T4 are connected in the excitation generator field circuit, are equivalent to excitation generator excitation and are powered by controlled current source.Its loop time constant reduces greatly, and the L/R during by the voltage Parallel Control becomes the L/(R of electric current series connection control
Ce+ R), R
CeDynamic electric resistor for T3, T4 series connection back equal set electrode-emitter is generally hundreds of K Ω.(2) when multiphase generator constant voltage output services state, coupled switch K1, K2, K3, K4 are combined to the position set, take out rectifier output voltage signal u by voltage divider (R1, W1)
d,, be added to amplifier A4 input and reference signal V earlier through the V/F-F/V buffer circuit
Ce4Comparison is after the proportional integral computing; While load current signal i
dBy Hall element CMPA1 sampling, after the computing of self adaptation differential circuit, be added to amplifier A input, two paths of signals is comprehensive, after amplifying, removes to control output power amplifier T3, T4.(3) when multiphase generator constant current output services state, K1, K2, K3, K4 are combined to position " 2 ", current signal i
dAfter the CMPA2 sampling, by self adaptation proportional-integral-differential (PID) the computing circuit computing that A4 and A form, independent control power amplifiers T3, T4 after amplifying.(4) CMPA3 and CMPA4 are respectively to current signal i
dSampling goes to change the multiplication factor of amplifier A1 and A through the photoelectricity coupling circuit, and to guarantee generator under different conditions, stabilizing arrangement can change signal amplification factor automatically with the variation of load current id.
Claims (3)
1, a kind of stabilizer for multi-phase synchronous generator by excitation generator excitation with rectification load, comprise: the voltage check device (R1 that is used for detecting described rectification load voltage, W1), be used for above-mentioned detected voltage and thereby a fiducial value compares and the gained error signal is carried out the proportional integral computing export the device of first control signal (A4), it is characterized in that also comprising: the device (CMPA1) that is used for detecting described rectification load electric current, be used for thereby described detected electric current is carried out the device (A1) that self adaptation is differentiated and exported second control signal, thereby be used for that described first control signal and described second control signal are carried out condensation and export the device of the 3rd control signal (A), and be connected on the device (T3 that described the 3rd control signal of response in the winding circuit of excitation generator magnetic field is directly controlled the field supply of excitation generator, T4).
2, a kind of stabilizer for multi-phase synchronous generator by excitation generator excitation with rectification load, comprise: the current sensing means (CMPA2) that is used for detecting described rectification load electric current, be used for above-mentioned detected electric current and a fiducial value compares and thereby the gained error signal is carried out the device (A4) that first control signal is exported in ratio each minute computing, it is characterized in that also comprising: thus described first control signal is carried out the device (A) that self adaptation is differentiated and exported second control signal, and be connected in the winding circuit of excitation generator magnetic field the device (T3 that described the 3rd control signal of response is directly controlled the field supply of excitation generator, T4).
3, device as claimed in claim 1 is characterized in that also being connected with between described voltage check device and the described device that error signal is carried out the proportional integral computing voltage isolation device that is made of electric voltage/frequency converter (V/F) and frequency (F/V) and Light Coupled Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92113427 CN1027779C (en) | 1992-11-16 | 1992-11-16 | Stabilizer for multi-phase synchronous generator with rectification load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92113427 CN1027779C (en) | 1992-11-16 | 1992-11-16 | Stabilizer for multi-phase synchronous generator with rectification load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1083283A CN1083283A (en) | 1994-03-02 |
| CN1027779C true CN1027779C (en) | 1995-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92113427 Expired - Fee Related CN1027779C (en) | 1992-11-16 | 1992-11-16 | Stabilizer for multi-phase synchronous generator with rectification load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1027779C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611376A (en) * | 2012-03-09 | 2012-07-25 | 方平 | Control coil current differential feedback based controller for electromechanical transducer |
| CN107168437B (en) * | 2017-07-04 | 2019-06-11 | 中国科学技术大学 | A kind of bipolar current source |
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1992
- 1992-11-16 CN CN 92113427 patent/CN1027779C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1083283A (en) | 1994-03-02 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CI01 | Correction of invention patent gazette |
Correction item: Termination of patent right for invention Correct: delete False: 92113427.4 Number: 1 Page: 132 Volume: 14 |
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| ERR | Gazette correction |
Free format text: CORRECT: INVENTION AFFAIRS CESSATION OF PATENT RIGHT; FROM: 92113427.4 TO: DELETED |
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| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |