A Frequency Response Method to Estimate Inductance Profile of Switched Reluctance Motor
نویسندگان
چکیده
Inductance profile has an important bearing on the performance of a Switched Reluctance Motor (SRM) This paper presents the results of a frequency respolse method to estimate the inductance profde of SRMs. Stator winding is energized by a variable voltage variable Frequency supply. An approximate equivalent circuit incorporating stator resistance, winding inductance and loss component has been used to estimate the inductance at different rotor positions. The inductance value is obtained over a band of rotor positions spanning one rotor pole pitch. Supply frequency is varied from 10 Hz to 55 Hz. The method is found to be simpler to the one using dc switching and processing of transient response. Interestingly, inductance at any given rotor position is not found to be sensitive to excitation frequency. However, as could be expected, cure lass under test condition is very much sensitive to supply frequency. Typical test results on a 4 kW, $16 pole, 4 pbase SRM are presented and discussed.
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