Applying PWM to control overcurrents at unbalanced faults of force-commutated VSCs used as static var compensators

Journal Article · Wed Jan 01 04:00:00 EST 1997 · IEEE Transactions on Power Delivery

DOI:https://doi.org/10.1109/61.568250· OSTI ID:477210

Jiang, Y; Ekstroem, A ^[1]

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1. Royal Inst. of Tech., Stockholm (Sweden). Dept. of Electrical Engineering

This study is devoted to investigating the possibility of controlling the overcurrent of a forced-commutated voltage source converter (VSC) by PWM when the ac system is undergoing large unbalanced disturbance. The converter is supposed to be used as a static var compensator at a high power level. A novel control strategy is proposed for controlling the reactive current and the dc side voltage independently. Digital simulation results are presented and compared with the results by using just the reactive current control with fundamental switching frequency.

• Sponsoring Organization: Electric Power Research Inst., Palo Alto, CA (United States)
• OSTI ID: 477210
• Report Number(s): CONF-950635--
• Journal Information: IEEE Transactions on Power Delivery, Journal Name: IEEE Transactions on Power Delivery Journal Issue: 1 Vol. 12; ISSN 0885-8977; ISSN ITPDE5
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
ELECTRICAL TRANSIENTS
OVERCURRENT
POWER CONDITIONING CIRCUITS
RECTIFIERS
VAR CONTROL SYSTEMS