18486585. VEHICLE SYSTEMS AND LOSS OF ISOLATION DETECTION METHODS (GM GLOBAL TECHNOLOGY OPERATIONS LLC)
VEHICLE SYSTEMS AND LOSS OF ISOLATION DETECTION METHODS
Organization Name
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor(s)
Martin E. Rosalik, Jr. of Oakland Twp MI US
Todd M. York of Highland MI US
Tanvi Nagarale of Rochester Hills MI US
Brent S. Gagas of Pleasant Ridge MI US
Brian A. Welchko of Oakland Township MI US
VEHICLE SYSTEMS AND LOSS OF ISOLATION DETECTION METHODS
This abstract first appeared for US patent application 18486585 titled 'VEHICLE SYSTEMS AND LOSS OF ISOLATION DETECTION METHODS
Original Abstract Submitted
Vehicles and related systems and monitoring methods are provided for detecting a loss of isolation on one side of a power converter. One method involves monitoring a normalized voltage input to a power conversion module coupled to the electric motor, in response to the normalized voltage exceeding a diagnostic activation threshold, determining a first number of instances of a range between successive extremas of the normalized voltage exceeding a loss of isolation range threshold over a diagnostic window of time, and automatically initiating a remedial action when the first number is greater than a loss of isolation detection threshold.
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