Control apparatus for power converter

Details Control apparatus for power converter Control apparatus for power converter

1994-08-17

1995-08-29

Wong, Peter S.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363127, H02M 3338

Patent

active

054466474

ABSTRACT:
A device for controlling output voltage of a converter is provided. The input voltage V.sub.R is detected by means of a voltage detecting device and the phase .PHI. of the input voltage is detected by means of a phase synchronizing circuit. The detected phase is input to an AC sine wave reference oscillating circuit in order to obtain an AC sine wave reference signal having the same phase as input voltage. The output of an amplitude instruction generating circuit is multiplied by an AC sine wave reference signal by means of a multiplier in order to obtain a converter current instruction I.sub.A *. The input current I.sub.R detected by means of a current detecting device is differentiated by means of an approximation differentiator and only the resonance frequency component is detected by means of a band-pass filter. The detected resonance frequency component is multiplied by a gain K by means of a proportion device and the output os subtracted from the converter current instruction I.sub.A * by means of a subtractor. The current control amplifier and the PWM modulating circuit control a converter so as to make the output from the subtractor agree with the converter current I.sub.A * detected by a current detecting device.

REFERENCES:
patent: 5182463 (1993-01-01), Yamamoto et al.
patent: 5216585 (1993-06-01), Yasumura
patent: 5349514 (1994-09-01), Ushiki et al.
Takahashi et al, "High Performance and Long Life Uninterruptible Power Source Using a Flywheel Energy Storage Unit", 1990 IEEE Industry Applications Society Annual Meeting, Seattle, Wash., pp. 1045-1055.

Affiliated with

Also associated with

Rating

Control apparatus for power converter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control apparatus for power converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control apparatus for power converter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1824421