Invention Grant
US09035588B2 Brushless motor driving apparatus and brushless motor driving method
有权
无刷电机驱动装置和无刷电机驱动方式
- Patent Title: Brushless motor driving apparatus and brushless motor driving method
- Patent Title (中): 无刷电机驱动装置和无刷电机驱动方式
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Application No.: US13614380Application Date: 2012-09-13
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Publication No.: US09035588B2Publication Date: 2015-05-19
- Inventor: Masaki Hano , Naoki Okamoto
- Applicant: Masaki Hano , Naoki Okamoto
- Applicant Address: JP Hitachinaka-shi
- Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
- Current Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
- Current Assignee Address: JP Hitachinaka-shi
- Agency: Foley & Lardner LLP
- Priority: JP2011-205654 20110921
- Main IPC: H02P6/18
- IPC: H02P6/18 ; H02P6/16
Abstract:
A brushless motor driving apparatus that rotates and drives a brushless motor, which has a plurality of coils, by switching energization modes corresponding to phases of the brushless motor, sequentially switches the energization modes based on a non-energized phase voltage and a voltage threshold. Also, the brushless motor driving apparatus regulates an upper threshold for energization amount based on the voltage threshold and a change in the non-energized phase voltage at timing of switching the energization mode.
Public/Granted literature
- US20130069575A1 BRUSHLESS MOTOR DRIVING APPARATUS AND BRUSHLESS MOTOR DRIVING METHOD Public/Granted day:2013-03-21
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