Method and apparatus for stabilized integral control of static p

Details Method and apparatus for stabilized integral control of static p Method and apparatus for stabilized integral control of static p

1979-11-19

1981-12-22

Shoop, William M.

Electric power conversion systems

Frequency conversion without intermediate conversion to d.c.

By semiconductor converter

363 79, H02M 527

Patent

active

043074448

ABSTRACT:
Firing signals for the power switches in static power frequency changers are generated by comparing the integral of the output waveform ripple voltage to a repetitively generated stabilizing signal phase locked to, but having a time dependent magnitude independent of, the component waveforms of the output voltage. The stabilizing signal which changes in magnitude in one direction with time is reset to an initial level each time a firing signal is generated.

REFERENCES:
patent: 3585485 (1971-06-01), Gyugyi et al.
patent: 3818315 (1974-06-01), Gyugyi et al.
Pelly, "Thyristor Phase-Controlled Converters and Cycloconverters", Wiley-Interscience, 1971, pp. 229-259.
Gyugyi et al., "Static Power Frequency Changers", Wiley-Interscience, 1976, pp. 289-308.

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