Invention Grant
- Patent Title: Motor controller
- Patent Title (中): 电机控制器
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Application No.: US12543750Application Date: 2009-08-19
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Publication No.: US08207694B2Publication Date: 2012-06-26
- Inventor: Shiho Izumi , Satoru Kaneko , Hideki Nihei
- Applicant: Shiho Izumi , Satoru Kaneko , Hideki Nihei
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2008-217498 20080827
- Main IPC: H02P6/16
- IPC: H02P6/16

Abstract:
When the torque command value is zero, a set point of DC current for an inverter is calculated to obtain a difference between the set point and a detected DC current so that an error in magnetic pole position may be estimated and corrected. By correcting the magnetic pole position, unwanted power running and regenerative torque of the motor can be avoided and unnecessary charge or discharge to or from a battery can be prevented.
Public/Granted literature
- US20100052581A1 MOTOR CONTROLLER Public/Granted day:2010-03-04
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