Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1993-02-17
1995-01-17
Wysocki, Jonathan
Electricity: motive power systems
Switched reluctance motor commutation control
318439, 318434, H02P 600
Patent
active
053828909
ABSTRACT:
An integrated circuit driver for a brushless motor having an encoder which includes a plurality of Hall-effect sensors operative for providing commutation information to a motor controller includes a commutation decoding section for decoding the commutation information from the Hall-effect sensors and an analog current limiter. The current limiter includes a circuit for dynamically switching the current limit values for current in the motor between a high current limit value and a low current limit value based on the average or RMS value of the motor winding current. The current limit values must be provided externally. A Hall-effect sensor quadrature encoder is provided on the integrated circuit and a selection switch allows for the selection of a quadrature output from an external optical encoder or the internal Hall-effect sensor encoder.
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Moh Sungwon R.
Potter Scott T.
Ramirez Frank D.
Salazar Edilberto I.
Parks, Jr. Charles G.
Pitney Bowes Inc.
Scolnick Melvin J.
Wysocki Jonathan
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