Power converting apparatus

Details Power converting apparatus Power converting apparatus

2006-05-23

2010-11-16

Laxton, Gary L (Department: 2838)

Electric power conversion systems

Current conversion

Having plural converters for single conversion

C363S070000, C363S081000

Reexamination Certificate

active

07835165

ABSTRACT:
In a power converting apparatus in which two three-phase converters (1), (2) are operated parallel to one another, the three-phase converters (1), (2) are controlled by using d- and q-axis voltage commands. DC current sensors (26), (27) detect individual output DC currents (26a), (27a) of the three-phase converters (1), (2), and a d-axis voltage command vdr for each of the three-phase converters (1), (2) is corrected in a manner that reduces a difference between the output DC currents (26a), (27a). In this way, an output imbalance between the two three-phase converters (1), (2) is corrected while decreasing limitations on arrangement of the DC current sensors (26), (27).

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