Invention Grant
- Patent Title: Fault protection for electric drive systems
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Application No.: US15159051Application Date: 2016-05-19
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Publication No.: US09862276B2Publication Date: 2018-01-09
- Inventor: Lihua Chen , Yan Zhou , Shuitao Yang
- Applicant: Ford Global Technologies, LLC
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technologies, LLC
- Current Assignee: Ford Global Technologies, LLC
- Current Assignee Address: US MI Dearborn
- Agency: Brooks Kushman P.C.
- Agent David B. Kelley
- Main IPC: H02P1/00
- IPC: H02P1/00 ; H02H7/09 ; B60L3/00 ; H02P27/08 ; H02P29/028 ; H02M7/5387

Abstract:
A vehicle power system includes a controller configured to issue commands to open a selected set of switches of an inverter and then to operate the selected set of switches according to a pulse width modulation signal having an increasing duty cycle such that input current to a battery is driven towards zero and a magnitude of d-axis current of the drive system is reduced in response to a fault with an electric drive system.
Public/Granted literature
- US20170334294A1 FAULT PROTECTION FOR ELECTRIC DRIVE SYSTEMS Public/Granted day:2017-11-23
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