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Patent Searching and Data


Title:
METHOD FOR CONTROLLING INVERTER, MOTOR DRIVE UNIT, MOTOR MODULE, AND ELECTRIC POWER STEERING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/049459
Kind Code:
A1
Abstract:
Provided is a method for controlling an inverter which enables a greater amount of electric current to flow through the inverter by appropriately suppressing the generation of heat by a switch element. This method for controlling an inverter includes: an electric current acquiring step S100 of acquiring phase currents; an estimating step S200 of estimating an average electric current per cycle of a switching operation, flowing through each of a plurality of switch elements in the inverter; an updating step S300 of determining, for each phase, an optimal distribution of time ratios of a plurality of switching patterns, on the basis of the estimated value of the average electric current; and a generating step S400 of generating a control signal for controlling the switching operations of the plurality of switch elements on the basis of the optimal distributed values of the time ratios; wherein the electric current acquiring step, the estimating step, the updating step and the generating step are carried out repeatedly.

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Inventors:
KITAMURA,Takashi (338 Kuzetonoshiro-cho Minami-ku, Kyoto-sh, Kyoto 05, 〒6018205, JP)
Application Number:
JP2018/022923
Publication Date:
March 14, 2019
Filing Date:
June 15, 2018
Export Citation:
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Assignee:
NIDEC CORPORATION (338 Kuzetonoshiro-cho, Minami-ku Kyoto-sh, Kyoto 05, 〒6018205, JP)
International Classes:
H02M7/48; B62D5/04; B62D6/00; H02P27/08; B62D107/00; B62D137/00
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