Method for balancing currents to switching devices
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United States of America Patent
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Dec 18, 1990
Grant Date -
N/A
app pub date -
May 26, 1989
filing date -
May 26, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is provided for balancing a current distribution to a plurality of switching device of full-bridge inverter composed of N modules. Each of the N modules includes series connected first and second switching devices. The N modules are arranged in a row. First and second supply feeder bars for connection to a dc power source are provided along one side of the row of N modules, and first and second load feeder bars are provided on the opposite side of the row of N modules for connection to a load. Each of the N modules is selectively connected to one of the first and second load feeder bars and to one of the first and second supply feeder bars such that a current flow direction of each module is the same as the a current flow direction of one adjacent module and is opposite a current flow direction of the other adjacent module. Furthermore, the dc power source is connected to the first and second supply feeder bars at one end of the row of modules, and the load is connected to the load feeder bars at the other end of the row of modules.
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