Voltage source type power converting apparatus

Details Voltage source type power converting apparatus Voltage source type power converting apparatus

1996-04-26

1999-03-23

Wong, Peter S.

Electric power conversion systems

Current conversion

Having plural converters for single conversion

363 71, H02M 7515

Patent

active

058868887

ABSTRACT:
A voltage source type power converting apparatus having voltage source type power converter units and phase-shifting transformers. The transformers have either a common multiple-phase primary winding or a group of parallel connected multiple-phase primary windings, either of which being connected in parallel or series to a multiple-phase AC system. The transformer further include a group of multiple-phase secondary windings with phase differences with respect to each other and which are connected to voltage source type power converter units. The voltage source type power converter units are operated with the phase differences. Accordingly, the construction of the multiplexing phase-shifting transformer is simple, and fundamental electric variables can be controlled by a simple phase controlling operation. In addition, a higher harmonic defect of the AC system can be reduced, and the DC voltage can be easily raised.

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