CN220210281U - High-power starting voltage regulating system of excitation generator - Google Patents
High-power starting voltage regulating system of excitation generator Download PDFInfo
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- CN220210281U CN220210281U CN202321368599.5U CN202321368599U CN220210281U CN 220210281 U CN220210281 U CN 220210281U CN 202321368599 U CN202321368599 U CN 202321368599U CN 220210281 U CN220210281 U CN 220210281U
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- 230000005284 excitation Effects 0.000 title claims abstract description 30
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 29
- 238000004804 winding Methods 0.000 claims abstract description 61
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000002955 isolation Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims description 3
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- 230000004044 response Effects 0.000 abstract description 5
- 230000001052 transient effect Effects 0.000 abstract description 5
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Abstract
The utility model discloses a high-power starting voltage regulating system of an excitation generator, which relates to the technical field of excitation generators and comprises the following components: the PMG permanent magnet motor comprises a PMG permanent magnet motor, a voltage regulator, a magnetic field breaker, a fundamental auxiliary winding and a harmonic auxiliary winding, wherein the PMG permanent magnet motor is electrically connected with the voltage regulator, the voltage regulator is electrically connected with the magnetic field breaker, and the magnetic field breaker is electrically connected with the fundamental auxiliary winding and the harmonic auxiliary winding. The excitation generator high-power starting voltage regulating system can provide power for continuous short-circuit current through the PMG permanent magnet machine, the fundamental auxiliary winding and the harmonic auxiliary winding, voltage detection signals are obtained through the isolation transformer, the influence of conduction noise interference and nonlinear load distortion on voltage detection precision can be effectively restrained, the voltage detection terminal continuously samples the output end, and the output is regulated and output twice in each period, so that the response speed of the PMG permanent magnet machine to load change is improved, and the transient load capacity of the generator is obviously improved.
Description
Technical Field
The utility model relates to the technical field of excitation generators, in particular to a high-power starting voltage regulating system of an excitation generator.
Background
An excitation system may be described as a system that provides excitation current for generator rotor twisting. The ambient planned incentive system provides consistent task quality, safety, and fast transient response;
however, when the existing excitation generator is started at high power, the voltage and the power supply are unstable, so that noise interference and nonlinear load distortion influence the voltage detection precision, and the output process is influenced by the load distortion;
accordingly, in view of the above, research and improvement have been made to solve the conventional structure and drawbacks, and a high-power starting voltage regulating system for an excitation generator has been proposed.
Disclosure of Invention
The utility model aims to provide a high-power starting voltage regulating system of an excitation generator, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a high power start voltage regulating system for an excitation generator, comprising: the PMG permanent magnet motor comprises a PMG permanent magnet motor, a voltage regulator, a magnetic field breaker, a fundamental auxiliary winding and a harmonic auxiliary winding, wherein the PMG permanent magnet motor is electrically connected with the voltage regulator, the voltage regulator is electrically connected with the magnetic field breaker, the magnetic field breaker is electrically connected with the fundamental auxiliary winding and the harmonic auxiliary winding, and a magnetic field between the fundamental auxiliary winding and the harmonic auxiliary winding is coupled through a stator core.
Furthermore, the PMG permanent magnet machine provides power by self excitation, and the PMG permanent magnet machine carries out pulse width modulation output through IGBT, so that the output can keep linearity and cannot be influenced by load distortion.
Furthermore, the PMG permanent magnet machine, the voltage regulator, the magnetic field breaker, the fundamental auxiliary winding and the harmonic auxiliary winding are connected through independent connecting terminals, and the PMG permanent magnet machine, the voltage regulator, the magnetic field breaker, the fundamental auxiliary winding and the harmonic auxiliary winding form a voltage regulating system, and an excitation power supply of the voltage regulating system can be directly provided by the main stator winding.
Furthermore, the voltage regulator respectively controls the output power of the power conversion part of the fundamental auxiliary winding and the harmonic auxiliary winding, so that the system has the functions of low-frequency protection and over-excitation protection of an excitation system.
Furthermore, the voltage regulator is electrically connected with an isolation transformer, and the isolation transformer is electrically connected with the output end, so that the influence of conduction noise interference and nonlinear load distortion on the voltage detection precision is effectively inhibited.
Furthermore, the PMG permanent magnet machine, the fundamental auxiliary winding and the harmonic auxiliary winding can provide power for continuous short-circuit current, a 50Hz or 60Hz mode can be conveniently selected through a jumper, and the overexcitation protection limit value can be set according to parameters of the PMG permanent magnet machine.
Compared with the prior art, the utility model has the beneficial effects that:
the power supply and the voltage detection of the voltage regulating system adopt independent connecting terminals, the exciting power supply can be directly provided by the main stator winding, the PMG permanent magnet machine, the fundamental auxiliary winding and the harmonic auxiliary winding can provide power when the continuous short-circuit current is required, the voltage detection signal is obtained through the isolation transformer, the influence of conduction noise interference and nonlinear load distortion on the voltage detection precision can be effectively restrained, the voltage detection terminal continuously samples the output end, the exciting current of the PMG permanent magnet machine is regulated according to the obtained sampling data, and the exciting current of the PMG permanent magnet machine is regulated and output for two times in each period, so that the response speed of the PMG permanent magnet machine to load change is improved, and the transient load capacity of the generator is obviously improved.
Drawings
FIG. 1 is a schematic diagram of a system according to the present utility model;
fig. 2 is a schematic diagram of a PMG permanent magnet machine according to the present utility model.
In the figure: 1. a PMG permanent magnet machine; 2. a voltage regulator; 3. a magnetic field circuit breaker; 4. a fundamental auxiliary winding; 5. a harmonic auxiliary winding; 6. an isolation transformer.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-2, a high-power start voltage regulating system of an excitation generator includes: the PMG permanent magnet machine 1, the voltage regulator 2, the magnetic field breaker 3, the fundamental auxiliary winding 4 and the harmonic auxiliary winding 5, wherein the voltage regulator 2 is electrically connected with the PMG permanent magnet machine 1, the magnetic field breaker 3 is electrically connected with the voltage regulator 2, the magnetic field breaker 3 is electrically connected with the fundamental auxiliary winding 4 and the harmonic auxiliary winding 5, and a magnetic field between the fundamental auxiliary winding 4 and the harmonic auxiliary winding 5 is coupled through a stator core. The PMG permanent magnet machine 1 provides power supply by self excitation, and the PMG permanent magnet machine 1 carries out pulse width modulation output through IGBT; the power supply and voltage detection among the PMG permanent magnet machine 1, the voltage regulator 2, the magnetic field breaker 3, the fundamental wave auxiliary winding 4 and the harmonic auxiliary winding 5 adopt independent wiring terminals, and the PMG permanent magnet machine 1, the voltage regulator 2, the magnetic field breaker 3, the fundamental wave auxiliary winding 4 and the harmonic auxiliary winding 5 form a voltage regulating system; the voltage regulator 2 controls the output power of the power conversion part of the fundamental auxiliary winding 4 and the harmonic auxiliary winding 5, respectively; the voltage regulator 2 is electrically connected with an isolation transformer 6, and the isolation transformer 6 is electrically connected with the output end; the PMG permanent magnet machine 1, the fundamental auxiliary winding 4 and the harmonic auxiliary winding 5 can supply power to a continuous short-circuit current. The voltage detection terminal continuously samples the output end, and adjusts the exciting current of the PMG permanent magnet machine 1 according to the obtained sampling data, and each period has twice adjustment output, so that the response speed of the PMG permanent magnet machine 1 to load change is improved, and the transient load capacity of the generator is obviously improved.
Working principle: when the excitation generator high-power starting voltage regulating system is used, firstly, a fundamental auxiliary winding 4, a harmonic auxiliary winding 5 and a PMG permanent magnet machine 1 can provide power by self excitation, and after power voltage is rectified and filtered, pulse width modulation output is carried out through an IGBT (insulated gate bipolar transistor), so that the output can be kept linear and cannot be influenced by load distortion; the PMG permanent magnet machine 1, the voltage regulator 2, the magnetic field breaker 3, the fundamental auxiliary winding 4 and the harmonic auxiliary winding 5 adopt independent wiring terminals for power supply and voltage detection, exciting power supply can be directly provided by a main stator winding, and when the continuous short-circuit current is required, a power supply voltage detection signal can be provided from the PMG permanent magnet machine 1 or the auxiliary winding and obtained through the isolation transformer 6, so that the influence of conduction noise interference and nonlinear load distortion on voltage detection precision can be effectively inhibited; the voltage detection terminal of the voltage regulating system continuously samples the output end of the generator winding. The excitation current of the PMG permanent magnet machine 1 is regulated according to the obtained sampling data, and each period has two regulation outputs, so that the response speed of the PMG permanent magnet machine 1 to load change is improved, and the transient load capacity of the PMG permanent magnet machine 1 is obviously improved. The voltage regulating system has the functions of low-frequency protection and over-excitation protection of the excitation system. The 50Hz or 60Hz mode can be conveniently selected through the jumper, and the over-excitation protection limit value can be set according to the parameters of the PMG permanent magnet machine 1. Providing a connection terminal for remote voltage regulation, the user can realize accurate control of the output voltage of the PMG permanent magnet machine 1. The voltage regulating system is provided with an analog input control terminal, can be connected with a power factor controller or similar compatible equipment, can be conveniently connected with a droop transformer, and can realize parallel operation with other similar generators, namely the working principle of the excitation generator high-power starting voltage regulating system.
The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (6)
1. A high power start voltage regulating system for an excitation generator, comprising: the PMG permanent magnet machine (1), voltage regulator (2), magnetic field circuit breaker (3), fundamental auxiliary winding (4) and harmonic auxiliary winding (5), its characterized in that, PMG permanent magnet machine (1) electric connection has voltage regulator (2), voltage regulator (2) electric connection has magnetic field circuit breaker (3), magnetic field circuit breaker (3) electric connection has fundamental auxiliary winding (4) and harmonic auxiliary winding (5), magnetic field between fundamental auxiliary winding (4) and the harmonic auxiliary winding (5) is through stator core coupling.
2. The high-power starting voltage regulating system of the excitation generator according to claim 1, wherein the PMG permanent magnet machine (1) provides power by self excitation, and the PMG permanent magnet machine (1) performs pulse width modulation output through an IGBT.
3. The high-power starting voltage regulating system of the excitation generator according to claim 1, wherein the power supply and voltage detection between the PMG permanent magnet machine (1), the voltage regulator (2), the magnetic field breaker (3), the fundamental auxiliary winding (4) and the harmonic auxiliary winding (5) adopt independent wiring terminals, and the PMG permanent magnet machine (1), the voltage regulator (2), the magnetic field breaker (3), the fundamental auxiliary winding (4) and the harmonic auxiliary winding (5) form the voltage regulating system.
4. A high-power starting voltage regulating system of an excitation generator according to claim 1, characterized in that the voltage regulator (2) controls the output power of the power conversion parts of the fundamental auxiliary winding (4) and the harmonic auxiliary winding (5), respectively.
5. The high-power starting voltage regulating system of an excitation generator according to claim 1, wherein the voltage regulator (2) is electrically connected with an isolation transformer (6), and the isolation transformer (6) is electrically connected with the output terminal.
6. A high power start-up voltage regulating system of an excitation generator according to claim 1, characterized in that the PMG permanent magnet machine (1), the fundamental auxiliary winding (4) and the harmonic auxiliary winding (5) can supply power to a continuous short-circuit current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321368599.5U CN220210281U (en) | 2023-06-01 | 2023-06-01 | High-power starting voltage regulating system of excitation generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321368599.5U CN220210281U (en) | 2023-06-01 | 2023-06-01 | High-power starting voltage regulating system of excitation generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220210281U true CN220210281U (en) | 2023-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321368599.5U Active CN220210281U (en) | 2023-06-01 | 2023-06-01 | High-power starting voltage regulating system of excitation generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220210281U (en) |
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2023
- 2023-06-01 CN CN202321368599.5U patent/CN220210281U/en active Active
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