Title :
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
Author :
Akagi, Hirofumi ; Fujita, Hideaki ; Yonetani, Shinsuke ; Kondo, Yosuke
Author_Institution :
Tokyo Inst. of Technol., Tokyo
Abstract :
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.
Keywords :
PWM power convertors; static VAr compensators; apparent power 10 kVA; five-level diode-clamped PWM converter; frequency 3 kHz; industrial systems; pulsewidth-modulation converter; static synchronous compensator; transformerless STATCOM; utility distribution systems; voltage 200 V; voltage 6.6 kV; voltage-balancing circuit; Automatic voltage control; Circuit testing; Diodes; Electrical equipment industry; Laboratories; Pulse circuits; Pulse transformers; Pulse width modulation converters; Switching converters; Voltage transformers; Multilevel converter; reactive power; split dc capacitors; static synchronous compensator (STATCOM); voltage-balancing circuit;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2008.916713
