Power conversion control apparatus

Details Power conversion control apparatus Power conversion control apparatus

1993-07-02

1994-07-19

Stephan, Steven L.

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

363 35, H02M 545

Patent

active

053315359

ABSTRACT:
A power conversion system has a control circuit constituted by a dual system. The control circuit of each system is equipped with a current control circuit. The current control circuit has a selection circuit that, after determining the magnitude of the output of an integrating amplifier of its own system and the output of an integrating amplifier of the other system, selects one of the outputs of the two integrating amplifiers. The selection circuit applies a signal responsive to a difference between the output of the integrating amplifier of its own system and the output of the selection circuit of its own system as correction signal to the input of the integrating amplifier of its own system. Accordingly, when the power conversion system is utilizes a dual control system, even when the current control circuit includes an integration algorithm, control can be performed by the two systems without saturation due to the integration algorithm.

REFERENCES:
patent: 4555750 (1985-11-01), Matsumura et al.
patent: 4648018 (1987-03-01), Neupauer
patent: 4685044 (1987-08-01), Weibelzahl et al.
patent: 5010467 (1991-08-01), Tokiwa et al.
patent: 5272617 (1993-12-01), Nakamura

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