Invention Grant
- Patent Title: Method, computer program product and controller for starting-up a switched reluctance motor, and electrical apparatus implementing same
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Application No.: US14785672Application Date: 2013-04-22
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Publication No.: US09729088B2Publication Date: 2017-08-08
- Inventor: Pavel Grasblum
- Applicant: Pavel Grasblum
- Applicant Address: US TX Austin
- Assignee: NXP USA, Inc.
- Current Assignee: NXP USA, Inc.
- Current Assignee Address: US TX Austin
- International Application: PCT/IB2013/053171 WO 20130422
- International Announcement: WO2014/174339 WO 20141030
- Main IPC: H02P1/00
- IPC: H02P1/00 ; H02P1/16 ; H02P25/08 ; H02P25/089

Abstract:
A method of starting-up a switched reluctance, SR, motor is provided. The method comprises simultaneously energizing a plurality of phases at a first time point with respective phase voltages that are substantially the same, until the motor rotor is stabilized in alignment with either one of the plurality of phases; simultaneously de-energizing the plurality of phases at a second time point that follows the first time point; monitoring a decrease of respective phase currents in the plurality of phases from a third time point that follows the second time point by a first predetermined time interval; determining a phase of alignment of the rotor using evaluation of the decrease of the phase currents following simultaneous de-energizing of the plurality of phases; and, initiating rotation of the rotor from the determined phase of alignment of the rotor.
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