Zero-crossing correction in sinusoidally commutated motors

Details Zero-crossing correction in sinusoidally commutated motors Zero-crossing correction in sinusoidally commutated motors

2007-01-09

2007-01-09

Nguyen, Matthew V. (Department: 2838)

Electric power conversion systems

Current conversion

Using semiconductor-type converter

C363S098000, C318S599000

Reexamination Certificate

active

10896665

ABSTRACT:
An apparatus and method for controlling sinusoidal currents in inductive loads during zero-crossing to reduce distortion. The apparatus and method utilizes first and second PWM signals during a single PWM cycle to apply opposite voltage signals to obtain a net desired voltage across the inductive load. The voltage applied to the load is compared with a threshold and, when the applied voltage is greater than the threshold, normal PWM signals are applied to the load, and when the applied voltage is less than the threshold, an adjusted voltage formed of first and second PWM signals is applied to the load.

REFERENCES:
patent: 3924167 (1975-12-01), Clark et al.
patent: 5428522 (1995-06-01), Millner et al.
patent: 5442540 (1995-08-01), Hua et al.
patent: 5764024 (1998-06-01), Wilson
patent: 5808441 (1998-09-01), Nehring
patent: 5946200 (1999-08-01), Kim et al.
patent: 5977741 (1999-11-01), DeLange et al.
patent: 6420685 (2002-07-01), Tanamachi
patent: 6483724 (2002-11-01), Blair et al.
patent: 6504427 (2003-01-01), Midya et al.
patent: 6580236 (2003-06-01), Mitsuda
patent: 6992902 (2006-01-01), Jang et al.
Motorola, Inc., Motorola Semiconductor Application Notes; AN1728; 1997.

Affiliated with

Also associated with

Rating

Zero-crossing correction in sinusoidally commutated motors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Zero-crossing correction in sinusoidally commutated motors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zero-crossing correction in sinusoidally commutated motors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3783505