| 摘要 |
All N parameters of an induction machine equivalent circuit may be determined by providing a stator voltage such that the induction machine produces no torque, measuring a stator current for at least N-1 frequencies, determining the tangent of the angle phi between the stator voltage and stator current at said frequencies, and solving N-1 equations R( omega )tan phi +X( omega )=0, given one of the parameters, said frequency values and said associated values for tangent phi , where R( omega ) and X( omega ) are the real and imaginary components of the complex stator impedance of the induction machine.
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