Power converter control apparatus for controlling commutation of

Details Power converter control apparatus for controlling commutation of Power converter control apparatus for controlling commutation of

1995-08-03

1998-02-10

Sterrett, Jeffrey L.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 95, H02M 7515

Patent

active

057175837

ABSTRACT:
A power converter controlling apparatus outputs voltage signals different in phase from phases of commutation voltages of each switching device by 90 degrees to transform the voltage signals and the commutation voltages in conformity with polar coordinate transformation, and outputs amplitudes of the commutation voltages and the phase differences of the commutation voltages to a reference phase based on the results of the transformation to operate phase-control angles of each switching device on the amplitudes and the phase differences.

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M. Takasaki et al., "Dynamics of HVDC System under Unbalanced AC Transmission Line Faults and its Stabilization", The Transaction of the Institute of Electrical Engineers of Japan, vol. 112-B, No. 1, Jan. 1992, pp. 27-35.
The Institute of Electrical Engineers of Japan, "DC Electrical Transmission Techniques Commentary" (Mar. 1978), p. 84.

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