Motor drive control

Details Motor drive control Motor drive control

2006-03-21

2006-03-21

Duda, Rina (Department: 2837)

Electricity: motive power systems

Switched reluctance motor commutation control

C318S132000, C318S434000, C318S599000

Reexamination Certificate

active

07015664

ABSTRACT:
A drive system for a three phase brushless motor uses an algorithm for position sensing which measures the inductance in the motor phases and determines the position from the measured inductances. In order to reduce acoustic noise, the inductances are measured during test periods Tsd, which are conducting states added to the PWM pattern in each PWM period. The test periods have net voltage of zero and therefore do not affect the output of the motor, but are sufficiently long to allow inductance measuring as well as the use of a single current sensor for current sensing.

REFERENCES:
patent: 4841207 (1989-06-01), Cheyne
patent: 5343129 (1994-08-01), Hans et al.
patent: 5598073 (1997-01-01), Hans et al.
patent: 6002234 (1999-12-01), Ohm et al.
patent: 6172498 (2001-01-01), Schmidt et al.
patent: 6555977 (2003-04-01), Du et al.
patent: 6703805 (2004-03-01), Griffitts
patent: 198 38 227 (2000-02-01), None
patent: 0 856 937 (1998-08-01), None
Ogasawara, S., et al., “An Approach to Real-Time Position Estimation at Zero and Low Speed for a PM Motor Based on Saliency”; IEEE Transactions on Industry Applications, vol. 34, No. 1, Jan. 1998, pp. 163-169.

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