Title:
CONTROL UNIT FOR POWER CONVERSION DEVICE
Document Type and Number:
Japanese Patent JP2017143619
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a control unit for a self-excited power conversion device capable of performing appropriate voltage control even when a failure of a unit converter occurs.SOLUTION: An arm output voltage calculation section causes an average value of output voltages of individual arms to coincide with an average value of output voltages of all unit converters. A failure detection section detects a faulty cell stage number of the unit converters provided to the individual arms. A detection section of an operation cell stage number calculates the operation cell stage number on the basis of the faulty cell stage number detected by the failure detection section. A calculation section of a cell output voltage command value Vcp calculates the cell output voltage command value to be output by the individual unit converters. A cell voltage control section controls capacitor voltages of the individual unit converters on the basis of output of the calculation section of the cell output voltage command value Vcp.SELECTED DRAWING: Figure 3
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Inventors:
ARAI TAKURO
SUZUKI DAICHI
SUZUKI DAICHI
Application Number:
JP2016022348A
Publication Date:
August 17, 2017
Filing Date:
February 09, 2016
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
H02M7/49; H02J3/36; H02M7/797
Attorney, Agent or Firm:
Kiuchi Mitsuharu
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