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Title:
METHOD AND APPARATUS FOR MEASURING PARAMETERS OF MOTOR
Document Type and Number:
WIPO Patent Application WO/2023/237089
Kind Code:
A1
Abstract:
A method and apparatus for measuring the parameters of a motor, which relate to a method and apparatus for measuring a single-phase or three-phase induction motor, and a method and apparatus for measuring an effective turn ratio of a single-phase induction motor. The method for measuring an effective turn ratio of a single-phase induction motor comprises: applying a first alternating-current voltage, which is within a certain range of a rated working frequency of a single-phase induction motor, to a first winding of the single-phase induction motor; calculating an equivalent inductance of the first winding according to the first alternating-current voltage, a first winding current amplitude of a first winding current flowing through the first winding, and a first phase angle; applying a second alternating-current voltage, which is within a certain range of the rated working frequency of the single-phase induction motor, to a second winding of the single-phase induction motor; calculating an equivalent inductance of the second winding according to the second alternating-current voltage, a second winding current amplitude of a second winding current flowing through the second winding, and a second phase angle; and calculating an effective turn ratio according to the equivalent inductance of the first winding and the equivalent inductance of the second winding.

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Inventors:
ZHA XIAOFENG (CN)
TI JUAN (CN)
GREEN CHARLES E B (US)
TISCHLER JOSHUA E (US)
Application Number:
PCT/CN2023/099322
Publication Date:
December 14, 2023
Filing Date:
June 09, 2023
Export Citation:
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Assignee:
COPELAND CLIMATE TECH SUZHOU CO LTD (CN)
International Classes:
G01R31/34
Domestic Patent References:
WO2022069114A12022-04-07
Foreign References:
US20170117826A12017-04-27
CN103208965A2013-07-17
CN102914740A2013-02-06
CN101325353A2008-12-17
CN102904522A2013-01-30
CN104852666A2015-08-19
CN105388326A2016-03-09
CN1247988A2000-03-22
GB9921956D01999-11-17
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW CO., LTD. (CN)
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