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Modeling and Control of Fully Pitched Mutually Coupled Switched Reluctance Machines

Uddin, Md Wasi
http://rave.ohiolink.edu/etdc/view?acc_num=akron1469123515

Abstract Details

2016, Doctor of Philosophy, University of Akron, Electrical Engineering.
This dissertation aims to enlighten the readers on the fully pitched mutually coupled switched reluctance machines (FP-MCSRM) for off-road vehicles. Previous research focused exclusively on the FP-MCSRM's slower execution models and did not provide any torque ripple minimization study. This dissertation intends to fill the gaps by proposing a fast model and a torque ripple minimization criteria having three goals: (1) Development of an analytical model for FP-MCSRM, (2) Torque ripple minimization criteria and (3) Comparison of FP-MCSRM with the conventional switched reluctance machine (CSRM). In the analytical model, which can predict the winding flux linkages and torque for any given phase current and rotor position, the design parameters and the material properties of the machine are the only inputs to the model. The model is applicable for the rotor positions where the stator and rotor poles overlap. Initial assumptions and the step by step derivation for flux linkage, coenergy and torque calculations are provided. Another model of FP-MCSRM considering the effect of multiple phase current excitations using a single lookup table is used to calculate the current waveform for minimum torque ripple at any operating condition. The torque ripple minimization method synthesizes the current waveforms in Fourier series coefficients at some specific operating points with the rest determined through interpolation. A CSRM is designed for off-road vehicles to verify the proposed techniques. The design process aims to determine the best speed at which the CSRM would start single pulse mode operation ensuring the best efficiencies over the specified operating range. The machine is initially designed at the best speed with single pulse mode using analytical design tools and then further optimized through finite element analysis (FEA). The designed machine has been prototyped and then experimentally tested. The prototype CSRM is rewound into an FP-MCSRM to verify the proposed modeling and torque ripple minimization techniques. FEA simulations and Experimental results show that the model can predict the flux linkage and torque well. Finally, CSRM and FP-MCSRM are compared based on their electromagnetic behavior, operating range, torque per ampere and efficiency with the aid of FEA and experimental validation. It is observed that the winding configuration significantly affects the operating speed and torque per ampere. FP-MCSRMs provide better torque density compared to CSRM at a narrower speed range.
Yilmaz Sozer (Advisor)
Malik Elbuluk (Committee Chair)
Igor Tsukerman (Committee Chair)
Alper Buldum (Committee Chair)
Ping Yi (Committee Chair)
204 p.
Electrical Engineering; Electromagnetism; Engineering
switched reluctance, fully pitched, mutually coupled, modeling, control, torque ripple

Recommended Citations

Citations

  • Uddin, M. W. (2016). Modeling and Control of Fully Pitched Mutually Coupled Switched Reluctance Machines [Doctoral dissertation, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1469123515

    APA Style (7th edition)

  • Uddin, Md Wasi. Modeling and Control of Fully Pitched Mutually Coupled Switched Reluctance Machines. 2016. University of Akron, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1469123515.

    MLA Style (8th edition)

  • Uddin, Md Wasi. "Modeling and Control of Fully Pitched Mutually Coupled Switched Reluctance Machines." Doctoral dissertation, University of Akron, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1469123515

    Chicago Manual of Style (17th edition)

akron1469123515
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© 2016, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.