Title:
CONTROLLER
Document Type and Number:
Japanese Patent JP2023166882
Kind Code:
A
Abstract:
To detect idling or slide of a wheel shaft of an induction machine.SOLUTION: A controller 1 comprises: a power converter 2 that amplifies a voltage command v and supplies power to a plurality of induction machines 101, 102, 103, and 104; a magnetic flux calculator 4 that calculates an induction machine magnetic flux φ based on the sum total current i and the voltage command v; a speed calculator 5 that calculates an induction machine speed ωm based on the induction machine magnetic flux φ and the sum total current i; a torque control unit 6 that generates the voltage command v based on the sum total current i, the induction machine speed ωm, a magnetic flux command φC, and a torque command τC; a magnetic flux square calculator 7 that calculates an induction machine magnetic flux square value φvol2 obtained by squaring the induction machine magnetic flux φ; and a magnetic flux reduction detection unit 8 that receives input of the induction machine magnetic flux square value φvol2 and a predetermined detection threshold dφX, and outputs a detection signal K indicating the presence or absence of idling or slide of a wheel shaft of at least part of the plurality of induction machines 101, 102, 103, and 104.SELECTED DRAWING: Figure 1
Inventors:
TAKAGI MASASHI
Application Number:
JP2022077723A
Publication Date:
November 22, 2023
Filing Date:
May 10, 2022
Export Citation:
Assignee:
TOYO ELECTRIC MFG CO LTD
International Classes:
H02P5/46
Attorney, Agent or Firm:
Kenji Sugimura
Mitsutsugu Sugimura
Makoto Fukuo
Keita Tsuji
Mitsutsugu Sugimura
Makoto Fukuo
Keita Tsuji
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