METHOD FOR IDENTIFYING PARAMETERS OF ASYNCHRONOUS MOTOR

WIPO Patent Application WO/2003/047084

A1

The invention relating to a method for identifying parameters of asynchronous motor, measures the stator resistance of the motor by using direct−current volt−ampere method, obtains rotor resistance and leakage inductance of the rotor and stator by using short circuit tests, and gains the mutual inductance of the rotor and stator and no−load current by using no−load tests. It advances the precision and the stability of the parameters by compensating to the conductance voltage−drop, on−off time−delay and dead time in frequency conversion speed regulation system. Via the locked−rotor tests at two frequency points, it calculates the rotor resistance at rated slip frequency adopting the two−detector method and obtains the exact value of the rotor resistance overcoming the influence of the skin effect so as to meet the case of the vector control completely.

JPH0943319	CALCULATING METHOD FOR FIELD CURRENT OF HYBRID EXCITING-TYPE SYNCHRONIZER
WO/2011/132057	SYSTEM, WELLNESS CIRCUIT AND METHOD OF DETERMINING WELLNESS OF A ROTATING ELECTRICAL APPARATUS

LIU HONGXIN (CN)
ZHANG KEMENG (CN)
WANG YULEI (CN)

PCT/CN2002/000852

June 05, 2003

November 28, 2002

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EMERSON NETWORK POWER CO LTD (CN)
LIU HONGXIN (CN)
ZHANG KEMENG (CN)
WANG YULEI (CN)

G01R31/34; H02P21/16; (IPC1-7): H02P5/00; G01R31/34; H02P21/00

KR20010063255A	2001-07-09
JPH10262400A	1998-09-29
EP0704709A2	1996-04-03
US5371458A	1994-12-06

JEEKAI & PARTNERS (Jinyu Tower A129 West Xuan Wu Men Stree, XiCheng District Beijing 1, CN)

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