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Patent Searching and Data


Title:
CONTROL DEVICE AND CONTROL METHOD FOR ROTARY ELECTRIC MACHINE
Document Type and Number:
WIPO Patent Application WO/2018/012447
Kind Code:
A1
Abstract:
In the present invention a rotor position determination unit 10 uses induced voltages Vu, Vv, and Vw generated in each phase U, V, and W of an armature winding 5 to identify the rotor position. While a field current flowing in a field winding 3 is rising toward a target value (while the field current is changing over time), an induced voltage is generated in each phase of an armature winding 5 by means of a time derivative of the magnetic flux interlinked with the armature winding 5. The rotor position determination unit 10 identifies the rotor position (the d-axis of a rotor 4) on the basis of a table created by combining the polarity with the amplitude ratio of the induced voltage generated for each phase.

Inventors:
NAKAOKA TAKURO (JP)
FUJII KIYOSHI (JP)
Application Number:
JP2017/025086
Publication Date:
January 18, 2018
Filing Date:
July 10, 2017
Export Citation:
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Assignee:
DENSO CORP (JP)
International Classes:
H02P21/32
Foreign References:
JP2007159353A2007-06-21
JP2005012952A2005-01-13
JP2016059152A2016-04-21
Attorney, Agent or Firm:
TOHDA, Kiyoshi (JP)
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