Interior Permanent Magnet Synchronous Motor Drives

Hashim, Muhammad Azrin (2015) Interior Permanent Magnet Synchronous Motor Drives. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Lately, Interior Permanent Magnet Synchronous Motor (IPMSM) has been widely engaged in many industrial applications due to its high performance and high efficiency. They are robust high power-density machines adapted to be operating at high motor and inverter efficiency over wide speed ranges, including extensive ranges of stable-power operation. Unlike Permanent Magnet Synchronous Motor (PMSM), Interior Permanent Magnet Synchronous Motor (IPMSM) possess special characteristic over extended speed range by the flux weakening operation since the Permanent Magnet Synchronous Motor (PMSM) flux cannot be weakened directly. Control of the IPMSM at rated speed and below is achieved by use of the Maximum Torque per Ampere (MTPA) mode of operation utilizing a series approximated approach. Control above base speed is achieved based on an approximation of the flux-weakening (FW) mode of operation. A closed loop control system with a Proportional Integral (PI) controller in the speed loop has been imply to operate in Maximum Torque per Ampere (MTPA) and Flux-Weakening (FW) regions. This project uses Vector Control as the control strategies and the drive system based on Field Oriented Control (FOC) is developed, simulated and implemented. The entire drive system is simulated in MATLAB/Simulink based on mathematical model of the system devices including dynamic model of Interior Permanent Magnet Synchronous Motor Drive (IPMSM) and inverter. The aim of the drive system is to have speed control over wide speed range.

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