Laundering apparatus, method of operating a laundry machine, con

Details Laundering apparatus, method of operating a laundry machine, con Laundering apparatus, method of operating a laundry machine, con

1982-07-21

1985-12-03

Shoop, Jr., William M.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 318318, 318341, 318342, 318439, 323235, 363 41, 363124, H02M 108, H02M 712, H02P 602

Patent

active

045568278

ABSTRACT:
A circuit for controlling the energization of an electrical load from an AC source. The circuit has a pair of DC lines, and means is provided for rectifying the AC output of the source to apply a DC voltage across the DC lines in the form of a full wave rectified sinusoidal signal. Signal switching means for connection between the DC lines and the load establishes a conductive path therebetween during a variable time interval when the voltage applied by the full wave rectified sinusoidal signal exceeds the voltage across the load, and means including the switching means is provided for chopping the full wave rectified sinusoidal signal to apply pulses to the load during the variable time interval at a frequency which is high with respect to the frequency of the signal. Means connected to the chopping means for modulating the width of the pulses is responsive to an externally derived signal representative of the desired operation of the load, and means is responsive to the load current for modifying the externally derived signal to maintain the amplitude of the load current below a predetermined level whereby a high power factor is presented to the AC source during a predetermined range of operation of the load.
A method of operating an electronically commutated motor is also disclosed.

REFERENCES:
patent: 3152462 (1964-10-01), Elliott et al.
patent: 3216226 (1965-11-01), Alger et al.
patent: 3274471 (1966-09-01), Moczala
patent: 3284692 (1966-11-01), Gautherin
patent: 3293532 (1966-12-01), Dubin et al.
patent: 3304481 (1967-02-01), Saussele
patent: 3329852 (1967-07-01), Saussele et al.
patent: 3353076 (1967-11-01), Haines
patent: 3359474 (1967-12-01), Welch et al.
patent: 3369381 (1968-02-01), Crane et al.
patent: 3475668 (1969-10-01), Mieslinger
patent: 3488566 (1970-01-01), Fukuda
patent: 3531702 (1970-09-01), Hill
patent: 3577053 (1971-05-01), McGee
patent: 3577057 (1971-05-01), Dyer
patent: 3581173 (1971-05-01), Hood et al.
patent: 3599062 (1971-08-01), Crane et al.
patent: 3603161 (1971-09-01), Schwarz
patent: 3611081 (1971-10-01), Watson
patent: 3633084 (1972-01-01), Rakes
patent: 3634873 (1972-01-01), Nishimura
patent: 3663878 (1972-05-01), Miyasaka
patent: 3700987 (1972-10-01), Deering
patent: 3733540 (1973-05-01), Hawkins
patent: 3780363 (1973-12-01), Doemen et al.
patent: 3783357 (1974-01-01), Ichiyanage
patent: 3783359 (1974-01-01), Malkiel
patent: 3794895 (1974-02-01), Coupin et al.
patent: 3806785 (1974-04-01), DeValroger et al.
patent: 3824446 (1974-07-01), Forster et al.
patent: 3829749 (1974-08-01), Richt
patent: 3839661 (1974-10-01), Wada
patent: 3849718 (1974-11-01), Forster et al.
patent: 3875463 (1975-04-01), Reuter et al.
patent: 3896348 (1975-07-01), Loderer
patent: 3969658 (1976-07-01), Htsui
patent: 3997823 (1976-12-01), Machida
patent: 3999108 (1976-12-01), Tanikoshi
patent: 4011487 (1977-03-01), Loomis
patent: 4015182 (1977-03-01), Erdman
patent: 4051417 (1977-09-01), Fujinawa et al.
patent: 4161023 (1979-07-01), Goffeau
patent: 4169990 (1979-10-01), Lerdman
patent: 4197489 (1980-04-01), Dunn et al.
patent: 4208706 (1980-06-01), Suzuki et al.
patent: 4232536 (1980-11-01), Koseki
patent: 4233549 (1980-11-01), Dighe
patent: 4293904 (1981-10-01), Brooks et al.
patent: 4302717 (1981-11-01), Olla
patent: 4319317 (1982-03-01), Fukui et al.
patent: 4390826 (1983-06-01), Erdman et al.
Revankar et al, "Present Trends in Line-Current Harmonic . . . ", J. Inse. Electron & Telecommun. Eng. (India), vol. 25, No. 8, Aug. 1979, pp. 349-355.

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