This dissertation covers the design procedure of a 8/6 switched reluctance motor from the first principles. The methodical approach to designing the machine is one of the major objectives of this paper. The calculation of the unaligned inductance follows the basic principles of electromagnetic. The procedure for calculating voltage, current, speed and losses for various rotor positions has been developed. A detailed procedure to calculate the eddy-current losses was described. The process of finding the hysteresis losses does not rely on approximate flux profiles. Instead accurate flux plots are used to find the hysteresis losses. The calculation and documentation of the iron loss is one of the significant objective of this paper. The dissertation describes the design procedure for a SRM drive using the new voltage source inverter configuration. The design procedure was verified with computer simulations and experimental verifications of the drive have been done. A SRM drive to PID control has been developed. The dissertation shows the implementation of SRM drives using a DSP based controller and a single converter configuration.

No abstract

A direct Selective current harmonic elimination pulse width modulation technique is proposed for induction motor drive fed from voltage source inverter. The developed adaptive filtering algorithm for the selective current harmonic elimination in a three phase Voltage Source Inverter is a direct method to improve the line current quality of the Voltage Source Inverter base drive at any load condition. The self-adaptive algorithm employed has the capability of managing the time varying nature of load (current). The proposed Normalized Least Mean Squares algorithm based scheme eliminates the selected dominant harmonics in load current using only the knowledge of the frequencies to be eliminated. The algorithm is simulated using Matlab/Simulink tool for a three-phase Voltage Source Inverter to eliminate the fifth and seventh harmonics. The system performance is analyzed based on the simulation results considering total harmonic distortion, magnitude of eliminated harmonics and harmonic spectrum. The corroboration is done in the designed Voltage Source Inverter feeding induction motor using digital signal processor-TMS320L2812.The developed algorithm is transferred to digital signal processor using VisSim^TM software.

No abstract

No abstract