Title :
Introduction of a series-connected hybrid multi-converter system
Author :
Fukuda, Shoji ; Kubo, Yusuke ; Dongsheng, Li
Author_Institution :
Div. of Syst. & Inf., Hokkaido Univ., Sapporo, Japan
Abstract :
This paper proposes a hybrid multi-converter system aiming at a large capacity high voltage high efficiency converter system with being free from harmonies in its input/output. The system can consist of n-1 (n: integer) GTO inverters and a single neutral-point-clamped IGBT inverter connected in series by n output transformers. The GTO converters operate in a square-wave switching mode, while the IGBT converter operates in a PWM switching mode. The former produces a base part of the resultant output voltage. The latter not only produces an additional part of the resultant output, but offsets the harmonic components generated by the GTO converters. A basic voltage control strategy for the system is proposed, and its validity is verified by experimental results.
Keywords :
PWM invertors; electric current control; insulated gate bipolar transistors; switching circuits; thyristor convertors; voltage control; 1 kVA; GTO inverters; PWM switching mode; current control; harmonic components; harmonic free input/output; high voltage high efficiency converter system; neutral-point-clamped IGBT inverter; output transformers; series connection; series-connected hybrid multi-converter system; square-wave switching mode; voltage control; voltage control strategy; Circuits; Current control; Insulated gate bipolar transistors; Power harmonic filters; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Switching converters; Transformers; Voltage control;
Conference_Titel :
Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the
Conference_Location :
Pittsburgh, PA, USA
Print_ISBN :
0-7803-7420-7
DOI :
10.1109/IAS.2002.1044135
