| Summary: | 碩士 === 明志科技大學 === 電機工程系碩士班 === 103 === The aim of this thesis is to design the mathematical model of three-phase squirrel cage induction motor. To prove the validity of this model, all simulation results are compared with the experimental results. From the comparison process, the characteristics of three-phase squirrel cage induction motor can be described enough by this proposed mathematical model. The design of mathematical model can be divided into two parts that including the impedance parameters calculations and global characteristics simulations. First, the desinger’s experience and the national standards, like NEMA, CNS, and so on, must be used to calculate the impedance parameters. These computation results are compared with that of the fixed-point design to analysis, evaluation, and modify. And, the exponential function proposed in this thesis is to simulate the impedance parameters’ variation to satisfy the effect of the reverse curve of torque caused by the magnetic saturation and skin effect. To discuss the effectively and the cost, the variable scaling hybrid differential evolution (VSHDE) method is used in this thesis. From the computation results, the effectively and cost of the optimal design for the three-phase squirrel cage induction motor is outerperforming than the traditional fixed-point design.
|
|---|
