Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1994-08-16
1997-09-30
Martin, David S.
Electricity: motive power systems
Induction motor systems
Primary circuit control
318811, H02P 534
Patent
active
056729502
ABSTRACT:
A power supply for a variable speed AC motor includes a waveform generator for generating a periodic pulsed waveform according to a desired motor speed, an adjustable source of DC potential, and an inverter coupled to the waveform generator and to the source of DC potential. The inverter provides an AC pulse train to the AC motor, the pulse train having waveform characteristics according to the pulsed waveform generated by the waveform generator to obtain the desired speed. The voltage amplitude of the pulse train provided to the motor is proportional to the DC potential whereby motor currents can be controlled at the desired motor speed by varying the DC potential.
REFERENCES:
patent: 4047083 (1977-09-01), Plunkett
patent: 4099108 (1978-07-01), Okawa et al.
patent: 4237531 (1980-12-01), Cutler et al.
patent: 4238821 (1980-12-01), Walker
patent: 4465961 (1984-08-01), Landino
patent: 4473790 (1984-09-01), Plunkett et al.
patent: 4620296 (1986-10-01), Siemon
patent: 4780656 (1988-10-01), Mitchell
patent: 4876637 (1989-10-01), Mose et al.
patent: 4879639 (1989-11-01), Tsukehara
patent: 4902954 (1990-02-01), Oshima et al.
patent: 4926104 (1990-05-01), King et al.
patent: 4994950 (1991-02-01), Gritter
patent: 5111374 (1992-05-01), Lai et al.
patent: 5121043 (1992-06-01), Kerkman et al.
Patent Abstracts of Japan, vol. 5 No. 192 (E-085), 8 Dec. 1981 and JP-A-56 115195 (Toshiba Corp), Sep. 1981.
IEEE Review, vol. 131, 7 Sep. 1984, pp. 516-558, B.L. Jones et al., "Electrical variable-speed drivers".
Soviet Patent Abstracts, Section E1, Week 9020 27 Jun. 1990, Derwent Publications Ltd., London, BG; Class X12, AN 90-154359 & SU-A-520 638 (LVOV Poly), 6 May 1987.
Kemp William Harry
Shideler Victor Joseph
ITT Corporation
Lombardi Menotti J.
Martin David S.
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