Title:
POWER CONVERSION DEVICE
Document Type and Number:
Japanese Patent JP2022045784
Kind Code:
A
Abstract:
To realise control characteristic with high accuracy by estimating an induced voltage coefficient of a magnet motor without rotary automatic tuning.SOLUTION: First power Pc is calculated based on output voltage and output current of a magnet motor, and second power Pc^ is calculated based on an electric circuit constant, a current command, an output frequency, and an induced voltage coefficient of the magnet motor. By estimating the induced voltage coefficient so that the first power calculated may follow the second power, a drive of the magnet motor is controlled according to the induced voltage coefficient.SELECTED DRAWING: Figure 1
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Inventors:
TOBARI KAZUAKI
KONUMA YUSAKU
SUGIMOTO TAKUYA
WATANABE HIROSHI
TOKASHIKI MUTSUO
KONUMA YUSAKU
SUGIMOTO TAKUYA
WATANABE HIROSHI
TOKASHIKI MUTSUO
Application Number:
JP2020151558A
Publication Date:
March 22, 2022
Filing Date:
September 09, 2020
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD
International Classes:
H02P21/16; H02P21/08
Attorney, Agent or Firm:
Aoritsu patent business corporation