METHOD AND DEVICE FOR IDENTIFYING PHASE OF ROTOR OF DC MOTOR, AND HOUSEHOLD ELECTRICAL DEVICE

Title:

METHOD AND DEVICE FOR IDENTIFYING PHASE OF ROTOR OF DC MOTOR, AND HOUSEHOLD ELECTRICAL DEVICE

Document Type and Number:

WIPO Patent Application WO/2017/114229

Kind Code:

A1

Abstract:

Provided are a method and device for identifying a phase of a rotor of a DC motor (30), and a household electrical device capable of instantly identifying a phase of a rotor of a DC motor (30) and quickly adjusting a direction of turning of a fan upon starting of the fan. The method for identifying a phase of a rotor of a DC motor (30) comprises: detecting counter-electromotive forces Ua, Ub and Uc of a three-phase winding of a DC motor (30); and comparing the Ua, Ub and Uc to identify a phase of a rotor of the DC motor (30).

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Inventors:

LI YIAI (CN)
LUO JIANLI (CN)

Application Number:

PCT/CN2016/111047

Publication Date:

July 06, 2017

Filing Date:

December 20, 2016

Export Citation:

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Assignee:

GD MIDEA ENV APPLIANCES MFG CO LTD (CN)
MIDEA GROUP CO LTD (CN)

International Classes:

H02P6/182

Foreign References:

CN105490595A	2016-04-13
CN102055392A	2011-05-11
US9000703B2	2015-04-07
CN103018541A	2013-04-03
CN101931353A	2010-12-29

Attorney, Agent or Firm:

TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)

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