Controlled rotor rectifier arrangement for a slip-recovery drive

Details Controlled rotor rectifier arrangement for a slip-recovery drive Controlled rotor rectifier arrangement for a slip-recovery drive

1981-01-29

1983-05-24

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

With voltage source connected to motor secondary

318762, 318806, 318822, H02P 540

Patent

active

043852670

ABSTRACT:
SCR devices replace the usual diodes of the rectifier bridge section of a wound-rotor slip-recovery system motor drive. By controlling the retardation angle of the SCR devices while controlling the line bridge for acceleration from zero speed to normal speed, the rating of the overall system is reduced. By removing the gating signal of the SCR's while operating at a retardation angle in the range between zero and 90.degree., operation is immediately brought to a stop in case of an emergency.

REFERENCES:
patent: 3675099 (1972-07-01), Johnston
patent: 4091294 (1978-05-01), Zankl et al.
patent: 4186435 (1980-01-01), Cailloux
patent: 4237531 (1980-12-01), Cutler et al.
patent: 4251763 (1981-02-01), Walker et al.
Murphy, J. M. D. Thyristor Control of AC Motors, Pergamon Press, 1973, pp. 161-169.
Le-Hay et al., "Microprocessor Control of a Current-Fed Synchronous Motor Drive", Conference: Industry Applications, Society IEEE-IAS Annual Meeting, Cleveland, OH, USA Sep. 30-Oct. 4, 1979.
Maag, R. B. "Characteristics and Applications of Current Source/Slip Regulated Drives" IEEE-IGA Annual Meeting, Cleveland, Ohio Oct. 18-21,1971.

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