Title :
Advanced static VAr compensator using multimodules of multilevel converters with equalization control of DC voltage levels
Author :
Chen, Yiquang ; Ooi, Boon-Teck
Author_Institution :
Dept. of Electr. Eng., McGill Univ., Montreal, Que., Canada
Abstract :
This paper describes a high MVA static VAr compensator based on four modules of a diode-clamped, five-level power converter operating under the fundamental frequency method of control. By designing the switching instants of GTOs in the four modules, it is possible to achieve a high quality voltage waveform (THD ≈4%) and at the same time assure even current loading in the parallel connected modules. Equalization feedback control balances the GTO voltage stresses
Keywords :
control system synthesis; dynamic response; feedback; harmonic distortion; power semiconductor switches; power supply quality; power system harmonics; reactive power control; static VAr compensators; switching circuits; thyristor convertors; voltage control; DC voltage levels; GTO switching instants; GTO voltage stresses; THD; advanced static VAr compensator; control design; dynamic response; equalization control; equalization feedback control; even current loading; fundamental frequency control method; multilevel power converters; parallel connected modules; voltage waveform quality; Capacitors; Diodes; Feedback control; Frequency conversion; Magnetic circuits; Power harmonic filters; Static VAr compensators; Stress; Thyristors; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1996. PESC '96 Record., 27th Annual IEEE
Conference_Location :
Baveno
Print_ISBN :
0-7803-3500-7
DOI :
10.1109/PESC.1996.548665
