Controller for switched reluctance motor

Details Controller for switched reluctance motor Controller for switched reluctance motor

1995-03-28

1996-07-02

Ro, Bentsu

Electricity: motive power systems

Synchronous motor systems

Hysteresis or reluctance motor systems

318254000, 318611000, 318696000, H02P 705

Patent

active

055325670

ABSTRACT:
Suppression of a peak noise level as may be caused by a resonance when an SR motor is driven is intended. An offset is intentionally provided between a position for a maximum drive efficiency where the energization is to be switched and a position where the energization is actually switched. Such offsets s1, s2, s3, . . . are generated in terms of random numbers, producing a fluctuation in the frequency of the oscillations which result. The fluctuation in the frequency is effective to prevent the occurrence of a resonance. In order to avoid a resulting reduction in the drive efficiency, the magnitude of such offsets are limited to lie within a permissible shift angle, which is in turn determined in terms of the prevailing torque and number of revolutions, by reference to a map.

REFERENCES:
patent: 4525657 (1985-06-01), Nakase et al.
patent: 4868477 (1989-09-01), Anderson et al.
patent: 5223775 (1993-06-01), Mongeau
patent: 5457375 (1995-10-01), Marcinkiewicz et al.

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