Analyzing Induction Motor Variables (Voltage, Torque & Efficiency) To Compare Between Nelder-Mead Method And Powell's Method Of Optimization

Mohd Azri, Abu Bakar (2012) Analyzing Induction Motor Variables (Voltage, Torque & Efficiency) To Compare Between Nelder-Mead Method And Powell's Method Of Optimization. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This research aims to the efficiency as dependent variable with torque and current as the independent variables of induction motor by using optimization process. The optimal design of induction motor is crucial because of the energy or power consumption. The normal design of induction motor consumes more electricity and energy than the optimal design of induction motor. The application of induction motor is worldwide; therefore minimizing energy consumption of induction motor is one of the important sources for energy savings. Small proportion of the increase in efficiency will be significant energy savings and economic impact. Induction motor efficiency can be raised in various ways. One of them is believed to be optimized for the most economical approach. Therefore, it is very important to choose the best optimization techniques available for three-phase induction motor design. In this research, the optimum efficiency of induction motor will be obtained by using two methods which are Nelder-Mead method and Powell‟s method. After the calculation of optimization by these two methods, I will compare the methods in order to determine which one as the best estimation of the optimum efficiency. For the conclusion, both of Powell‟s and Nelder-Mead‟s method are very different in finding the results. Both of these methods use different methodology, algorithm and iterations. The outcomes both methods are closely. Both of methods have the same purpose to find the minimum points and as the final results of the minimum efficiency value for both methods are closely and approximately. The minimum efficiency result of Powell‟s method, 0.0032129 with the values of voltage 241.8V and torque 0.2Nm is lower than Nelder-Mead„s method (0.003313) with the range of voltage 265V and torque -0.4Nm which makes it better.

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