Active RCD adaptive voltage balancing control strategy for high-voltage uncontrolled rectifier valve

The voltage balance of the series diodes is the premise to ensure the stable and reliable operation of the high voltage uncontrolled rectifier valve. When traditional RC and RCD voltage balancing methods are applied to high voltage uncontrolled rectifier valves in far-reaching offshore wind farms, t...

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Bibliographic Details
Published in:Journal of physics. Conference series 2023-04, Vol.2491 (1), p.12033
Main Authors: Chen, Wenhao, Yang, Ping, Peng, Guoping, Liu, Zejian, Zeng, Jun, Shi, Ben, Wang, Hongzhan
Format: Article
Language:English
Subjects:
Active control
Adaptive control
Balancing
Circuits
High voltages
Interference
Offshore energy sources
Physics
Proportional integral derivative
Rectifiers
Wind power
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Summary:The voltage balance of the series diodes is the premise to ensure the stable and reliable operation of the high voltage uncontrolled rectifier valve. When traditional RC and RCD voltage balancing methods are applied to high voltage uncontrolled rectifier valves in far-reaching offshore wind farms, the complex and changeable operating environment poses a challenge to the anti-interference of the balance effect of the snubber circuit. In this paper, an active RCD adaptive voltage balancing control strategy with strong anti-interference ability is proposed based on the establishment of the active RCD voltage balancing model of the high voltage uncontrolled rectifier valve. The parameter tuning method of the active RCD snubber circuit is given, and the auto-PID control strategy of the active RCD snubber circuit is proposed according to its nonlinear time-varying characteristics. The simulation example verifies that the active RCD adaptive voltage balancing strategy of the high voltage uncontrolled rectifier valve has strong anti-interference performance, which provides a reference for the design of the high voltage uncontrolled rectifier valve voltage sharing system in the far-reaching offshore wind farm.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2491/1/012033