Title :
A direct digital proportional controller for thyristors
Author_Institution :
Royal Military Coll. of Canada, Kingston, Ont., Canada
Abstract :
A digital thyristor controller is described which uses an integral pulse-frequency modulator to ensure that the DC voltage appearing across the thyristor load is proportional to the digital control input. By using a microprocessor in an extended form of phase-locked loop around the pulse-frequency modulator, the thyristor(s) and the controller functions as a linear gain block unaffected by supply waveform fluctuations, while providing one-cycle response to step disturbances in supply voltage amplitude and frequency.
Keywords :
controllers; direct digital control; proportional control; thyristor applications; voltage control; direct digital proportional controller; extended PLL; integral pulse frequency modulator; linear gain block; microprocessor control; operation; phase locked loop; thyristor controller; Digital control; Logic gates; Microprocessors; Modulation; Radiation detectors; Thyristors; Voltage control;
Journal_Title :
Electrical Engineering Journal, Canadian
DOI :
10.1109/CEEJ.1980.6594353
