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A Sensorless Drive with Inductance Estimation for Switched Reluctance Motors
|關鍵字:||磁阻馬達;srm;四相;無感測;sensorless||出版社:||電機工程學系所||引用:|| 林瑞專, “Turn-on angle modulation in servo control of a switched reluctance motor,” Master’s degree thesis, NCHU, July 2001.  邱志強, “A low-cost variable structure minimum-time optimal current controller of a switched reluctance motor, ” Master’s degree thesis, NCHU, July 2005.  林華泰, “Integrated design of controller and drive for a switched reluctance motor”, Mater’s degree thesis, NCHU, June 2003.  鄭仲豪, “Implementation of a current controlled double switched reluctance motor drive using FPGA”, Master’s degree thesis, NCHU, June 2006.  柯呈達, “Sensorless Position Estimate for Switched Reluctance Motor with A Unipolar Converter Drive.”, Master’s degree thesis, NCHU, June 2007.  董勝源, “DSP TMS320LF2407 與C語言控制實習”, 長高出版社, 2004.R. M.  Davis, “Variable reluctance rotor structures-their influence on torque production,” IEEE Trans. Ind. Electron., vol. 39, no. 2, pp. 168-174, Apr. 1992.  H. C. Lovatt and J. M. 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Arefeen, “Implementation of a Current Controlled Switched Reluctance Motor Drive Using TMS320F240”, Application Report: SPRA282, Texas Instruments, Sep. 1998.||摘要:||
The purpose of this thesis is to develop a sensorless positioning method for a four-phase switched reluctance motor so as to fully replace the optical encoder in the driving mechanism. We install two current sensors in the dual-forward converter. By substituting the current information into the flux linkage dynamics, we obtain the instantaneous inductance value, so that the rotor position can be virtually estimated. We use a digital signal processor for computing the system parameters, which are then fed into the inductance computing algorithm. It is found that the inductance information alone is sufficient for driving purpose. The idea is confirmed by computer simulations as well as experimental data.
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