A 6.6-kV Transformerless STATCOM Based on a Five-Level Diode-Clamped PWM Converter: System Design and Experimentation of a 200-V 10-kVA Laboratory Model

This paper discusses the potential of a transformerless STATic synchronous COMpensator (STATCOM) intended for installation on the 6.6-kV industrial and utility distribution systems. The STATCOM consists of a five-level diode-clamped pulsewidth-modulation converter rated at 1 MVA and a voltage-balanc...

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Veröffentlicht in:	IEEE transactions on industry applications 2008-03, Vol.44 (2), p.672-680
Hauptverfasser:	Akagi, Hirofumi, Fujita, Hideaki, Yonetani, Shinsuke, Kondo, Yosuke
Format:	Artikel
Sprache:	eng
Schlagworte:	Automatic voltage control Carrier frequencies Circuit testing Circuits Converters Design engineering Diodes Electrical equipment industry Laboratories Multilevel converter Pulse circuits Pulse duration modulation Pulse transformers Pulse width modulation converters reactive power split dc capacitors static synchronous compensator (STATCOM) Switching converters Synchronous Systems design Voltage transformers voltage-balancing circuit Waveforms
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Zusammenfassung:	This paper discusses the potential of a transformerless STATic synchronous COMpensator (STATCOM) intended for installation on the 6.6-kV industrial and utility distribution systems. The STATCOM consists of a five-level diode-clamped pulsewidth-modulation converter rated at 1 MVA and a voltage-balancing circuit rated at 6 kVA. Moreover, this paper designs, constructs, and tests a 200-V 10-kVA STATCOM based on a five-level converter with a carrier frequency of 3 kHz and a voltage-balancing circuit with a switching frequency of 3 kHz. The STATCOM and its experimental waveforms verify the viability and effectiveness of the 6.6-kV transformerless STATCOM.
ISSN:	0093-9994 1939-9367
DOI:	10.1109/TIA.2008.916713