High dynamic performance of permanent magnet synchronous motor design

Title: High dynamic performance of permanent magnet synchronous motor design
　　Author: Bo
　　Degree-granting units: Hunan University
　　Keywords: permanent magnet synchronous motor;; electromagnetic design;; finite element analysis;; moment of inertia
　　Abstract: Rare earth permanent magnet synchronous motor is the early 1970s, the emergence of a new permanent magnet motor, its small size, light weight children, high efficiency, features, good range of benefits, a new generation of aviation, aerospace and marine important development direction of the motor. Since the structure of rare earth permanent magnet Magnetic lifter synchronous motor complex and diverse, cross media interface of right and wrong, making the rare-earth permanent magnet synchronous motor design becomes more complex, calculation accuracy is rather poor; In addition, rare earth permanent magnet synchronous motor in some special electromagnetic process and some special problems such as shape and size of the pole structure optimization, the local loss of the permanent magnet magnetic design problems are difficult.
　　In this paper, rare earth permanent magnet synchronous motor control structure and magnetic characteristics, based on rare-earth permanent magnet synchronous motor working on the electromagnetic design. Of rare earth permanent magnet synchronous motor design process and how to improve the design of its dynamic performance, and how to improve the design of permanent magnet synchronous motor accuracy of the calculation carried out in-depth study.
　　This paper introduces a variety of permanent magnet synchronous motor rotor structure and characteristics; analysis of the magnetic circuit of permanent magnet synchronous motor characteristics and operating principles; focus on analysis of the armature reaction and the rotor inertia calculation. As this paper the design of permanent magnet synchronous motor with small size, light weight, high efficiency, power density, high heat load the salient features, and thus design more difficult. In this paper, magnetic circuit analysis and finite element calculation method of combining the motor to optimize the design. Weight due to the demanding requirements of the motor, the http://www.999magnet.com/products/131-magnetic-lifter rotor dug holes to take a weight loss technique, and the use of Maxwell 2D software for weight loss after the motor electromagnetic field analysis and simulation, electromagnetic motor test performance.
　　Finally, the article describes the speed sensorless vector control method. As the motor studied in this paper, there are strict on the size and weight restrictions, and taking into account the working environment, the installation environment of intense vibration, the motor is very high reliability requirements, this paper designed permanent magnet motor servo system with no speed sensor control system.
　　Degree Year: 2010