Permanent magnet synchronous motor dynamic modeling with genetic algorithm performance improvement

Abstract

This paper proposes dynamic modeling simulation for ac Surface Permanent Magnet Synchronous Motor (SPMSM) with the aid of MATLAB-Simulink environment. The proposed model would be used in many applications such as automotive, mechatronics, green energy applications, and machine drives. The modeling procedures are described and simulation results are presented. The validity of this dynamic model here is verified. Then, two genetic algorithm trials are presented to improve SPMSM performance. Maximum torque per ampere genetic algorithm function with maximum efficiency constrained is illustrated. Also, genetic algorithm maximum efficiency function constrained by GA maximum power factor is proposed. Simulations are implemented using MATLAB with its genetic algorithm toolbox. Finally, the required voltage to drive the motor at the desired improved characteristics is deduced for each case. All various characteristics are well depicted in the form of comparisons with such ones from original characteristics at rated voltage.

Permanent Magnet Synchronous Motor Drive Based on Modified Space Vector Pulse Width Modulation

“…The mathematical model for the PMSM is similar to the model of a wound rotor type synchronous machine, except that the field assumed constant. Using park's transformation, PMSM is usually modeled in the rotor reference frame [4][5][6][7][8].The vector graph of PMSM is shown in Fig.(1). Where i sd and i sq are d-q axes stator currents , ψ f is the flux linkage due to permanent magnet and δ is the load angle.…”

“…Where i sd and i sq are d-q axes stator currents , ψ f is the flux linkage due to permanent magnet and δ is the load angle. The following assumptions are taken into account when representing the PMSM model [5,6] The transformation from three -phase to two phase time variant α β elements in a fixed reference frame by using Clarke transformations:…”

“…I d and I q are d, q-currents respectively. The developed electromagnetic torque is given by [1][2][3][4][5][6][7]:…”

“…Building of simulation system was discussed in detail. Dynamic modeling and simulation for many types such as ac SPMSM with the aid of MatLab-Simulink environment had been proposed [5,6]. Other they produced a Precise modeling of PMSM that considered the nonlinear characteristics of the hard and soft magnetic materials used in the machine [7].…”

FPGA Field Oriented Control of an Axial Flux motor-in-wheel

“…So, the main equations of the motor are expressed under a d-q coordinate system, as shown in equations (1) to (4). It was assumed that the rotor flux is constant and the motor losses were neglected [6], [7].…”