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This paper discusses a potential of a transformerless STATCOM (static synchronous compensator) intended for installation on the 6.6-kV industrial and utility distribution systems. The STATCOM consists of a five-level diode-clamped PWM 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.
Industry Applications Conference, 2005. Fourtieth IAS Annual Meeting. Conference Record of the 2005 (Volume:1 )
Date of Conference: 2-6 Oct. 2005