PWM controlled DC/AC power converter

Details PWM controlled DC/AC power converter PWM controlled DC/AC power converter

1990-08-31

1991-10-15

Stephan, Steven L.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 96, H02M 744

Patent

active

050579894

ABSTRACT:
In an apparatus for controlling a power converter, which is adapted to control, in accordance with a PWM system, a voltage-type inverter for system interconnection interposed between a d.c. power source and an a.c. system to interchange power therebetween, a scheme is employed to switch voltage amplitude adjustment signals of respective phases depending upon an output voltage phase signal provide a phase voltage amplitude. Energization periods of respective controllable rectifier elements of the power converter are determined on the basis of the phase voltage amplitude and the output voltage phase signal. Employment of such a scheme makes it possible to independently control the output voltage of the inverter every phase or with respect to both positive and negative sides of the phases, respectively.

REFERENCES:
patent: 4377779 (1983-03-01), Plunkett
patent: 4562524 (1985-12-01), Mutoh et al.
patent: 4595976 (1986-06-01), Parro
patent: 4615000 (1986-09-01), Fuji et al.
patent: 4628475 (1986-12-01), Azusawa et al.
patent: 4757434 (1988-07-01), Kawabata et al.
patent: 4772996 (1988-09-01), Hanei et al.
patent: 4875149 (1989-10-01), Rozman et al.
patent: 4905134 (1990-02-01), Recker et al.

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