Invention Grant
- Patent Title: Apparatus for quasi-sensorless adaptive control of switched reluct ange motor drives
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Application No.: US16945269Application Date: 2020-07-31
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Publication No.: US11264932B2Publication Date: 2022-03-01
- Inventor: Trevor A. Creary , Mahesh Krishnamurthy , Piyush C. Desai , Mark Johnston , Timothy Knodel
- Applicant: Turntide Technologies Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: Turntide Technologies Inc.
- Current Assignee: Turntide Technologies Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Temmerman Law
- Agent Mathew J. Temmerman
- Main IPC: H02K23/00
- IPC: H02K23/00 ; H02P25/089 ; H02P25/092

Abstract:
A method and apparatus for quasi-sensorless adaptive control of a high rotor pole switched-reluctance motor (HRSRM). The method comprises the steps of: applying a voltage pulse to an inactive phase winding and measuring current response in each inactive winding. Motor index pulses are used for speed calculation and to establish a time base. Slope of the current is continuously monitored which allows the shaft speed to be updated multiple times and to track any change in speed and fix the dwell angle based on the shaft speed. The apparatus for quasi-sensorless control of a high rotor pole switched-reluctance motor (HRSRM) comprises a switched-reluctance motor having a stator and a rotor, a three-phase inverter controlled by a processor connected to the switched-reluctance motor, a load and a converter.
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