Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
1996-05-02
1999-08-10
Nguyen, Vinh P.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
G01R 3126
Patent
active
059364220
ABSTRACT:
A hybrid vehicle utilizes a power unit to store and convert power between a turbine alternator, flywheel, and traction motor. The power unit uses a plurality of power transistors for switching power to the equipment. The transistors are set in an H-bridge configuration to provide AC power. The H bridge configuration comprises two transistor pairs, each forming a half bridge. A process for matching the transistor pairs of each half bridge includes measuring the electrical and timing characteristics associated with turn on and turn off with a first transistor module, and measuring the electrical and timing characteristics associated with turn on and turn off of each of a plurality of transistor modules. The electrical and timing characteristics associated with each of the plurality of transistors modules is compared against the electrical and timing characteristics of the first transistor module. The transistor module of the plurality of having electrical and timing characteristics which are most similar to the electrical and timing characteristics of the first transistor module is selected. The first and selected transistor modules are combined to form a half bridge circuit of the H-bridge.
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Donegan Kevin J.
Shea Robert T.
Calcaterra Mark P.
Chrysler Corporation
Nguyen Vinh P.
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