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Title:
METHOD OF CONTROLLING POWER CONVERTER
Document Type and Number:
Japanese Patent JP2010154726
Kind Code:
A
Abstract:

To accurately compensate the output voltage of a power converter by searching an average error voltage using the conducting voltage of a power semiconductor determined in consideration of modulation of two arms and by adding the voltage compensation amount to compensate this error voltage to an output voltage command.

In the method to control the power converter with an arm connecting in series at least two power semiconductor switches in reverse parallel connection with the power semiconductor having different conducting voltage characteristics, the average error voltage occurring in the predetermined period of time due to the conducting voltage is calculated by using the conducting voltage of the power semiconductor, the time rate to turn on a power semiconductor switch within a predetermined period of time, and the polarity of conduction current of the power semiconductor switch and the voltage compensation amount to compensate this average error voltage is added to the output voltage command of the power converter.

COPYRIGHT: (C)2010,JPO&INPIT


Inventors:
ODAKA AKIHIRO
Application Number:
JP2008333193A
Publication Date:
July 08, 2010
Filing Date:
December 26, 2008
Export Citation:
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Assignee:
FUJI ELECTRIC SYSTEMS CO LTD
International Classes:
H02M7/48
Domestic Patent References:
JP2004135457A2004-04-30
JPH0698595A1994-04-08
JP2004064911A2004-02-26
Attorney, Agent or Firm:
森田 雄一