Invention Grant
- Patent Title: Disconnection detecting device for rotating electrical machine, method for detecting disconnection of rotating electrical machine
- Patent Title (中): 旋转电机断线检测装置，旋转电机断线检测方法
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Application No.: US14061400Application Date: 2013-10-23
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Publication No.: US09310440B2Publication Date: 2016-04-12
- Inventor: Takayuki Kakihara
- Applicant: DENSO CORPORATION
- Applicant Address: JP Kariya
- Assignee: DENSO CORPORATION
- Current Assignee: DENSO CORPORATION
- Current Assignee Address: JP Kariya
- Agency: Nixon & Vanderhye P.C.
- Priority: JP2012-236305 20121026
- Main IPC: H02H5/04
- IPC: H02H5/04 ; G01R31/34
Abstract:
A disconnection detecting device that can be applied to a control system of a motor-generator is provided. A disconnection detecting section judges whether logical conjunction (i.e. AND operation) of a condition that both current sensors are operating normally and a condition that the designated torque is equal to or more than a specified torque is true or not. In the event that the disconnection detecting section has determined YES, the disconnection detecting section judges whether the logical conjunction of a condition that the absolute value of the phase current is equal to or less than a specified current (>0) and a condition that the absolute value of the current change rate is equal to or less than a specified value (>0) is true or not. In the event that the disconnection detecting section has determined YES, the disconnection detecting section has determines that the disconnection has occurred.
Public/Granted literature
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