Motor control apparatus

Details Motor control apparatus Motor control apparatus

1996-03-22

1997-12-30

Nguyen, Matthew V.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 41, H02M 324, H02M 112

Patent

active

057037680

ABSTRACT:
A motor control apparatus is provided which is capable of preventing large, accidental switching surges and suppressing switching surges that hamper efforts to improve the efficiency of PWM control inverters. The motor control apparatus has a PWM control inverter and axial position detector 3 that detects the position of the rotary axis of motor 14. Gate drive circuit 1 of the PWM control inverter comprises decoder circuit 4, correction gate circuit 5, and logical AND circuit 6. The correction gate circuit 5 sets a time difference at the change point for PWM signals and at the change point for commutation signals.

REFERENCES:
patent: 4597037 (1986-06-01), Okado
patent: 5450306 (1995-09-01), Garces et al.
patent: 5537307 (1996-07-01), Hirose et al.
IECON'84, 22-26 Oct. 1984, Tokyo, JP, pp. 587-592, XP002002982,M. Ishii et al., "AC-input Brushless DC Motor without Smoothing Capacitor".

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