发明名称 |
Low speed position estimator for switched reluctance machine using flux/current model |
摘要 |
A method for estimating rotor position of a switched reluctance motor during rotor start-up or low speed operation includes applying a sequence of relatively high frequency, short duration electric probing pulses to at least two inactive excitation phase windings of a multi-phase motor. The voltage and current at each of the two inactive excitation phase windings are measured and the resultant values used to compute an estimated rotor/stator linkage/flux in each of the two excitation phase windings. The computed linkage/flux and measured phase current of the two inactive excitation windings is then used in a model to determine the rotor position. In one form, rotor position is determined by establishing a table of values representing rotor position as a function of phase current for each of a plurality of values of motor phase linkage/flux and selecting from the table a value of rotor position corresponding to the measured phase current and computed linkage/flux for the phase.
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申请公布号 |
US5525886(A) |
申请公布日期 |
1996.06.11 |
申请号 |
US19940263990 |
申请日期 |
1994.06.23 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
LYONS, JAMES P.;PRESTON, MARK A. |
分类号 |
H02P6/18;H02P25/08;(IPC1-7):H02P7/00 |
主分类号 |
H02P6/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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