A Novel Control Strategy for Three-Phase Four-Wire STATCOM

Abstract:

Nowadays Static Synchronous Compensator (STATCOM) has gradually become one of the representative techniques in the field of dynamic reactive power compensation in the power distribution system. This paper analyzed the topology and the voltage imbalance problem of the up and down capacitors on DC side of the three-phase four-wire STATCOM. In allusion to the imbalance problem of neutral point, a novel control strategy based on the control of zero-sequence current was proposed. By the triple close-loop control strategy, the STATCOM can achieve great control accuracy and dynamic performance. Simulation result proves that the proposed control method is effective.

• Periodical: Advanced Materials Research (Volumes 516-517)
• Pages: 1722-1727
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.516-517.1722
• Online since: May 2012
• Authors: Wei Jun Yun, Gang Yao, Li Dan Zhou, Chen Chen, Jun Min Pan
• Keywords: Control Strategy, Power Factor, Static Synchronous Compensator (STATCOM), Voltage Imbalancing, Zero-Sequence Current

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