Control system of excitation adjusting device
A control system and excitation regulation technology, applied in the control system, controlling generators through magnetic field changes, controlling generators, etc., can solve the problems of complex synchronous hardware circuits and strict timing requirements, to enhance anti-interference ability and make up for timing requirements. Rigorous, Reduced Complexity Effects
Inactive Publication Date: 2020-03-13
WUHAN WUSHUI ELECTRIC TECH
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0004] The problem solved by the present invention is: the way of adjusting the excitation current by the control system of the traditional excitation adjustment device has the defect of strict timing requirements, which requires the support of synchronous hardware circuits and the control process is relatively complicated
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[0027] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0028] Such as figure 1 As shown, it is a structural block diagram of the control system of the excitation adjustment device in this embodiment. The control system of the excitation adjustment device includes a signal acquisition control module 100, an excitation transformer, an uncontrollable rectification module and a voltage adjustment module 10, wherein:
[0029] The output end of the generator is connected to the input end of the signal acquisition control module 100, the output end of the signal acquisition control module 100 is connected to the control end of the voltage regulation module 10, and the signal acquisition control module 100 is used to acquire an electrical signal at the generator output terminal and output a pulse sign...
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The invention provides a control system of an excitation adjusting device. The system comprises a signal acquisition control module, an excitation transformer, an uncontrollable rectification module and a voltage regulation module. The generator terminal voltage of a generator is rectified by the uncontrollable rectification module to obtain a DC voltage and then pass through the voltage regulation module, the duty ratio of the conduction of each IGBT in the voltage regulation module is controlled through the signal acquisition control module to obtain a controllable DC voltage to be suppliedto an excitation winding, and an excitation current is provided, so that the defect that a traditional excitation adjusting mode has strict requirements for the time sequence is overcome, a synchronous hardware circuit is saved, the control process is simple, and the complexity of the circuit is reduced.
Description
technical field [0001] The invention relates to the technical field of excitation adjustment, in particular to a control system of an excitation adjustment device. Background technique [0002] The control system of the excitation adjustment device generally includes a measurement unit, a synchronization unit, an amplification unit, a difference adjustment unit, a stabilization unit, a limitation unit and some auxiliary units. The measured signal (such as voltage, current, etc.) After comparison, the comparison deviation is amplified by the preamplifier unit and the power amplifier unit, and used to control the firing angle of the thyristor in the three-phase rectifier bridge, so as to achieve the purpose of regulating the excitation current of the generator. [0003] Among them, the control system adjusts the excitation current by controlling the firing angle of the thyristor. It is necessary to synchronize the trigger signal of the thyristor with the bias voltage through t...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H02P9/30H02M5/293H02M1/092H02M1/44
CPCH02M1/092H02M1/44H02M5/293H02P9/305H02M1/0009H02M5/2932
Inventor 王津新司马蘋萍
Owner WUHAN WUSHUI ELECTRIC TECH