永磁电机优化设计与分析

发布时间：2018-05-28 17:48

本文选题：永磁同步电动机 + 优化设计　；参考：《北方工业大学》2017年硕士论文

【摘要】：永磁同步电动机因为其高效节能、结构和尺寸灵活多样等突出优点,在航空航天以及工农业生产中有着广泛应用。积极开展对永磁同步电动机优化设计技术的研究,开发更加高效和适应于多场合的永磁同步电动机对缓解全球能源问题,节约资源、保护环境以及占有电机市场提高国际竞争力具有重要意义。异步起动永磁同步电动机是具有自起动能力的永磁同步电动机,兼具有感应电动机异步起动的能力和永磁同步电动机同步运行能力,该电机转子中同时存在起动笼和永磁体,因此转子的设计空间比较紧张,电机的结构设计更加复杂。为解决电机设计中磁路计算复杂和查表工作繁琐、迭代处理耗时太长以及计算修正参数过多而导致精确性较差等问题,本文首先利用C++语言对电机的磁路法设计过程进行编程,采用场路结合法,有效提高了电机设计的效率和准确性。电机优化设计属于工程上有约束多变量非线性规划问题,遗传算法作为一种全局优化算法因为其简单高效和全局搜索的特点而广泛应用于电机优化设计中。本文在深入研究基本遗传算法寻优原理的基础上提出了改进型自适应遗传算法,提高了收敛速度同时避免了局部最优的问题;然后结合异步起动永磁同步电机的实际设计特点建立优化设计数学模型,将基本电磁设计程序与优化设计算法相连接,实现两种算法在电机优化设计中的应用,通过对优化前后设计方案的有限元仿真分析,验证了优化算法的有效性。最后,本文结合以上电机优化设计程序基于Microsoft Visual Studio 2010平台开发设计了一款异步起动永磁同步电机的优化设计软件,该软件能够实现电机的基本电磁计算、优化设计、槽型和工作特性曲线绘制以及数据保存等功能,软件界面友好、操作简便,能够快速实现对异步起动永磁同步电动机的优化设计,在提高设计电机性能的同时缩短了研发周期,在电机设计领域具有较好的实用价值。
[Abstract]:Permanent magnet synchronous motor (PMSM) has been widely used in aerospace industry and agriculture because of its advantages such as high efficiency and energy saving flexible structure and various dimensions. Actively carrying out the research on the optimization design technology of permanent magnet synchronous motor and developing more efficient permanent magnet synchronous motor suitable for many occasions to alleviate the global energy problem and save resources, It is of great significance to protect the environment and occupy the motor market to improve the international competitiveness. Asynchronous starting permanent magnet synchronous motor (PMSM) is a permanent magnet synchronous motor (PMSM) with self-starting capability. It has the capability of induction motor's asynchronous starting and permanent magnet's synchronous operation. There are both starting cage and permanent magnet in the rotor of this motor. Therefore, the rotor design space is relatively tight, the structure of the motor design is more complex. In order to solve the problems such as complicated calculation of magnetic circuit and complicated table searching in motor design, too long iterative processing time and too much calculation and correction parameters, the accuracy is poor, and so on. In this paper, the magnetic circuit design process of motor is programmed by C language, and the efficiency and accuracy of motor design are improved effectively by using field circuit method. The optimal design of motor is a constrained multivariable nonlinear programming problem in engineering. As a global optimization algorithm, genetic algorithm (GA) is widely used in motor optimization design because of its simple, high efficiency and global search characteristics. In this paper, an improved adaptive genetic algorithm (AGA) is proposed based on the basic genetic algorithm (GA) optimization principle, which improves the convergence speed and avoids the problem of local optimization. Then combined with the practical design characteristics of asynchronous starting permanent magnet synchronous motor (PMSM), the mathematical model of optimal design is established, and the basic electromagnetic design program is connected with the optimal design algorithm to realize the application of the two algorithms in the optimal design of the motor. The effectiveness of the optimization algorithm is verified by the finite element simulation analysis of the design scheme before and after optimization. Finally, based on the Microsoft Visual Studio 2010 platform, an optimal design software for asynchronous starting permanent magnet synchronous motor (PMSM) is developed, which can realize the basic electromagnetic calculation and optimal design of the motor. With the functions of drawing slot and working characteristic curve and data saving, the software interface is friendly, the operation is simple, the optimum design of asynchronous starting permanent magnet synchronous motor can be realized quickly, and the performance of the design motor is improved and the research and development cycle is shortened. It has good practical value in the field of motor design.
【学位授予单位】：北方工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM351

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