Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1998-02-05
1999-09-28
Shoop, Jr., William M.
Electricity: motive power systems
Switched reluctance motor commutation control
318138, H02P 100
Patent
active
059594187
ABSTRACT:
As shown in FIG. 9, a switching control part 310 detects voltage drops of FET power transistors 81 to 83, and outputs a switching control signal Vd responding with a modulated signal changed in synchronization with a movement of a motor, and a detected operation voltage. The switching operation of a switching transistor 61 is controlled responding with the switching control signal Vd, so that a converted DC voltage of a voltage converting part 52 is controlled. The converted DC voltage of the voltage converting part is supplied to power amplifying parts 11 to 17. The power amplifying parts configured by FET power current-mirror circuits analoguely alter current paths from the converted DC voltage of the voltage converting part to three-phase windings 2, 3, and 4, whereby pulsation of drive currents I1, I2, and I3 to the windings is reduced and a motor vibration is decreased in level.
REFERENCES:
patent: 4359674 (1982-11-01), Gotou
patent: 4494053 (1985-01-01), Gotou
patent: 4535276 (1985-08-01), Yokobori
patent: 4855652 (1989-08-01), Yamashita et al.
patent: 5661382 (1997-08-01), Enami et al.
Duda Rina I.
Matsushita Electric - Industrial Co., Ltd.
Shoop Jr. William M.
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