Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 5, 2011
Patent Application Number
12760082
Date Filed
April 14, 2010
Patent Primary Examiner
Patent abstract
The control device detects the B-terminal voltage by a B-terminal voltage detection section. When an abnormal voltage detection section detects that a voltage value of the detected B-terminal voltage is equal to or higher than a predetermined voltage value, all switching elements of the negative pole-side arm in a power conversion section are brought into conduction by a negative pole-side arm short-circuiting section, whereas all switching elements of a positive pole-side arm are interrupted. In addition, a field current is limited to zero or to a limit value by a field current control section.
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