Method for balancing currents to switching devices

Details Method for balancing currents to switching devices Method for balancing currents to switching devices

1989-05-26

1990-12-18

Stephan, Steven L.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363 58, 361392, 361393, 361400, H02M 75387, H02H 7122

Patent

active

049790897

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.

REFERENCES:
patent: 4670833 (1987-06-01), Sachs
Modern Technology Series; "Power Electronics"; Kouji Imai; Denki Shoin Co., Ltd., 1977, pp. 2-9 and 62-63.

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