Electricity: motive power systems – Induction motor systems – Power-factor control
Patent
1983-08-04
1993-08-24
Shoop, Jr., William M.
Electricity: motive power systems
Induction motor systems
Power-factor control
H02P 5168
Patent
active
052392503
ABSTRACT:
A variable speed drive system for an induction motor is disclosed which utilizes power factor correction capacitors to allow an induction motor to be driven by a line-commutated inverter using variable phase angle triggering of the thyristers in the inverter to compensate for frequency-induced changes in the operating point of the system.
REFERENCES:
patent: 3555396 (1971-01-01), Kalman
patent: 4001670 (1977-01-01), Gyugyi et al.
patent: 4013937 (1977-03-01), Pelly et al.
patent: 4039926 (1977-08-01), Steigerwald
patent: 4158801 (1979-06-01), Hirata
patent: 4249120 (1981-02-01), Earle
patent: 4330741 (1982-05-01), Nagase et al.
Laithwaite et al, "Development of an Induction Machine Commutated Thyristor Inverter for Traction Drives" Conference IAS Annual Meeting 1980, CIncinnati, Ohio. (Sep. 28-Oct. 30, 1980) pp. 580-585.
Murphy, J. M. D., Thristor Control of AC Motors, Pergamon Press, 1973, pp. 30-31.
Thorboro, K., "A Three Phase Inverter with a Reactive Power Control", IEEE International Semiconductor Power Convertor Conference (Cl.323-210) Baltimore, Md. May 8-10, 1972.
Huggett Colin E.
Kalman Gabor
Allied-Signal Inc.
McFarland James W.
Miller Leslie S.
Shoop Jr. William M.
Walsh Robert A.
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