Invention Grant
- Patent Title: Beat-less controller for permanent magnet motor
- Patent Title (中): 永磁电机无节制控制器
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Application No.: US11965871Application Date: 2007-12-28
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Publication No.: US07808202B2Publication Date: 2010-10-05
- Inventor: Kazuaki Tobari , Yoshitaka Iwaji , Kiyoshi Sakamoto , Hajime Uematsu , Masakazu Hase
- Applicant: Kazuaki Tobari , Yoshitaka Iwaji , Kiyoshi Sakamoto , Hajime Uematsu , Masakazu Hase
- Applicant Address: JP Tokyo
- Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
- Current Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Antonelli, Terry, Stout & Kraus, LLP
- Priority: JP2006-353655 20061228
- Main IPC: H02P27/04
- IPC: H02P27/04
Abstract:
In a driving system for an inverter that uses a diode rectifying circuit to convert a single-phase or three-phase AC voltage to a desired DC voltage and drives a permanent magnet motor, a DC-voltage pulsating frequency is estimated from a pulsating frequency setting calculated from the power supply frequency of an AC voltage and the detected current values of the inverter, and the resulting estimated pulsating frequency value and detected current values are used to correct the output voltage of the inverter.
Public/Granted literature
- US20080157710A1 BEAT-LESS CONTROLLER FOR PERMANENT MAGNET MOTOR Public/Granted day:2008-07-03
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