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Synchronverter-Based STATCOM With Voltage Imbalance Compensation Functionality
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DOI：10.1109/TIE.2021.3080215.png)
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摘要
En 中文
In this article, a synchronverter-based D-STATCOM with self-synchronization and voltage imbalance compensation capability with independent operation from the power operating modes is proposed. The S-STATCOM's synchronverter base model is first presented in space-vector representation together with its control strategy with standard D-STATCOM control structure. Then, the voltage imbalance compensation loop is proposed, which uses two well-known resonant control structures, the double second-order generalized integrator and a proportional plus resonant controller, in an innovative way to effectively turn the S-STATCOM into a specialized active filter for negative sequence voltage, compensating the voltage imbalance at the point of common coupling by supplying the corresponding oscillating power locally. Simulation and experimental results on a small scale prototype are presented to validate the control strategy, which successfully reduced voltage imbalances from up to 10% to bellow the 2% acceptable levels.
Keyword:
Synchronization
Integrated circuit modeling
Frequency control
Reactive power
Mathematical model
Frequency synchronization
Automatic voltage control
Current imbalance
microgrid
synchronverter
STATCOM
voltage imbalance
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期刊
IF:
7.2
论文数:
1.8W
被引数:
9.8W
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