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Patent Searching and Data


Title:
POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/186524
Kind Code:
A1
Abstract:
A power conversion device (100) is provided with: a power converter (10) that is connected to an alternating-current system (1) to which a load (2) is connected; and a control circuit (20). The control circuit (20) is provided with a harmonic compensation unit (23) that has a current command generation unit (30) and a limit factor computation unit (40) and that compensates for harmonic currents included in a load current. The current command generation unit (30) generates a desired compensation current value (32) for each of a plurality of frequency components and generates a compensation current command (31) for each frequency component by using corresponding limit factors (K) to correct respective desired compensation current values (32). The limit factor computation unit (40) computes the limit factors (K) on the basis of the desired compensation current value (32) for each of the plurality of frequency components and the maximum voltage and maximum current that can be output by the power converter (10).

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Inventors:
TOI TAKATO (JP)
KAJIYAMA TAKUYA (JP)
FUJII TOSHIYUKI (JP)
Application Number:
PCT/JP2020/011610
Publication Date:
September 23, 2021
Filing Date:
March 17, 2020
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G05F1/70; H02J3/01; H02M7/48
Foreign References:
JP2003061250A2003-02-28
JPH0549172A1993-02-26
Attorney, Agent or Firm:
PALMO PATENT FIRM, P.C. (JP)
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