Ballard Power Systems Corporation

Continental Automotive Systems Us, Inc.

Steven J Kowalec

Richard Joseph Hampo

Venkatapathi Raju Nallapa

Kerry Eden Grand

Doug D Deng

Bing Cheng

Duo Deng

Kon-King Mike Wang

Christophe Soudier

A control system, method and article allows a monitoring module to monitor operation of a main controller in an electric drive, by providing questions and evaluating the accuracy and/or timeliness of responses from the main controller. Upon detection of an excessive number of incorrect or late responses, the monitoring module can shutdown operation, and may provide an alternative communications path, thereby preventing corrupt data from reaching a vehicle network, while providing communications for diagnostic and recovery such as by provision of new software or firmware instructions. The main controller may monitor the operation of the monitoring module, taking appropriate action if a fault is detected. Disabling a supply of power to a traction motor may be based on current operating conditions, such as speed.

Controller method, apparatus and article suitable for electric drive

A system including a current sensor to sense a current provided by an electronic power converter, the current sensor includes an output; an overcurrent detection circuit with an input coupled to an output of the current sensor; and a logic control circuit configurable to maintain the current provided by the electronic power converter in response to the sensed current having a short circuit magnitude, the logic control circuit including an input coupled to an output of the overcurrent detection circuit and at least one output coupled to at least one switch of the electronic power converter.

Ride through in electronic power converters

The present invention relates to a system and method for compensating the voltage distortion and minimizing the available voltage range loss both caused by switching dead-time of solid-state switch components in power conversion devices. As a result, the power quality supplied from the power conversion devices can be improved and the output voltage of such devices can be increased.

Dead-time compensation with narrow pulse elimination in solid- state switch devices

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Plymouth, MI, United States of America

Steven J Kowalec