Abstract
The European Union has started enforcing IE2 level of energy-efficiency standard in induction motors. Immediately, major industrial countries in the world followed the same level of standard accordingly in the subsequent years. Hence, the trend to improve the efficiency of induction motors and reduce CO_2 emission has become the common goal of endeavor in various countries of the world. In this thesis, the objective is to establish a complete set of parameters for measurement of induction motors and achieve improvement of the efficiency by changing conductors and magnetic materials. In addition, optimization methods for improving energy efficiency have been verified by making use of complete design and analysis models. In this thesis, an industrial standard three-phase induction motor has been employed for generating the geometric model via computer aided design software packages. And, computer-aided electromagnetic engineering system has been adopted for calculating the equivalent circuit parameters including resistance, mutual inductance, leakage inductance and etc. Then, 2D analysis has been conducted for confirming accuracy of the theoretical design. Finally, experimental setups are completed for measuring losses and efficiency of motor under test to assess the results of theoretical design and computer analysis.