Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
April 22, 2014
Patent Application Number
13066864
Date Filed
April 27, 2011
Patent Citations Received
Patent Primary Examiner
Patent abstract
In two systems of three-phase alternating-current inverter devices that drive a motor, power elements on power supply sides of bridge circuits are mounted on unit bases to constitute upper arm units. Power elements on ground sides of the bridge circuits are mounted on unit bases to constitute lower arm units. The upper arm units and the lower arm units are arranged separately on upper surfaces and outside surfaces of heat dissipation blocks of a heat sink. Heats generated by the power elements do not interfere with each other and are emitted to the heat sink, whereby heat dissipation performance of the power elements constituting the bridge circuits is improved.
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