双余度永磁同步电机电磁参数与特性的计算

发布时间：2018-05-02 20:14

本文选题：双余度永磁同步电机 + 电磁参数与特性　；参考：《哈尔滨工业大学》2017年硕士论文

【摘要】：为了提高航天作动系统的运行可靠性,本文将余度技术与电机相结合,提出了双余度永磁同步电机。双余度永磁同步电机既具有永磁同步电机调速范围宽、动态响应快以及功率密度高的优点,同时又能提高电机系统的安全性和可靠性。成为越来越多学者的研究对象。本文以一台20极24槽永磁同步电机为研究对象,先分析传统永磁同步电机的运行性能。在传统电机模型的基础上,对电机重新分相,得到几种不同结构的双余度永磁同步电机。对这几种双余度永磁同步电机进行分析计算,与传统电机进行对比,并将几种双余度电机的性能也进行对比分析。论文首先分析了双余度永磁同步电机的运行原理和运行模式,介绍了双余度永磁同步电机的结构和特点,建立了ABC三相坐标系下以及dq0坐标系下的数学模型。对不同结构的双余度永磁同步电机进行电感的解析推导,为后面的仿真分析提供理论参考。其次,建立了传统电机和几种不同结构的双余度电机模型,并利用有限元软件进行仿真分析。对比了双余度电机与传统电机的空载特性,在空载特性保持基本相等的前提下,进行其他性能的对比分析。从电机电感角度,重点分析了双余度电机的交叉耦合特性。并仿真计算了交叉耦合特性对电机电磁转矩波动特性的影响。再次,利用磁势乘磁导法解析推导了双余度永磁同步电机的气隙磁密,利用麦克斯韦应力法分析了双余度永磁同步电机的电磁力波特性。利用有限元软件计算了双余度电机在空载以及额定负载情况下的电磁力波特性,并与传统电机进行对比分析。最后,介绍了传热学在电机中的应用,分析了真空温度场计算的特殊性,推导了电机的热传导微分方程,并确定了真空温度场计算的边界条件。利用二维有限元软件计算了电机的各种损耗,确定了电机的热源及电机各部件的导热系数。利用Workbench软件对一种双余度电机进行真空温度场的计算。
[Abstract]:In order to improve the operational reliability of space actuation system, this paper presents a double redundancy permanent magnet synchronous motor (PMSM) by combining the redundancy technology with the motor. Dual redundancy PMSM not only has the advantages of wide speed range, fast dynamic response and high power density, but also can improve the safety and reliability of the motor system. Become the research object of more and more scholars. In this paper, a 20 pole 24 slot permanent magnet synchronous motor (PMSM) is studied, and the performance of the traditional PMSM is analyzed. Based on the traditional motor model, several kinds of dual-redundancy permanent magnet synchronous motors with different structures are obtained. This paper analyzes and calculates the two kinds of permanent magnet synchronous motors, compares them with the traditional ones, and compares the performances of the two kinds of permanent magnet synchronous motors. This paper first analyzes the operation principle and operation mode of double redundancy permanent magnet synchronous motor, introduces the structure and characteristics of double redundancy permanent magnet synchronous motor, and establishes the mathematical model under ABC three-phase coordinate system and dq0 coordinate system. The inductance of double redundancy permanent magnet synchronous motor with different structures is deduced, which provides a theoretical reference for the simulation analysis. Secondly, the traditional motor and several kinds of double redundant motor models with different structures are established, and the finite element software is used to simulate and analyze them. The no-load characteristics of dual-redundancy motor and traditional motor are compared and the other performances are compared and analyzed on the premise that the no-load characteristics are basically equal. From the angle of motor inductance, the cross-coupling characteristics of double redundancy motor are analyzed. The influence of cross-coupling characteristics on electromagnetic torque ripple characteristics of motor is simulated and calculated. Thirdly, the air-gap magnetic density of double redundancy permanent magnet synchronous motor is derived by the method of magnetic potential multiplying magnetic conductance, and the electromagnetic force wave characteristics of double redundant permanent magnet synchronous motor are analyzed by Maxwell's stress method. The electromagnetic force wave characteristics of double redundancy motor under no-load and rated load are calculated by using finite element software and compared with the traditional motor. Finally, the application of heat transfer theory in motor is introduced, the particularity of vacuum temperature field calculation is analyzed, the heat conduction differential equation of motor is deduced, and the boundary conditions of vacuum temperature field calculation are determined. The loss of the motor is calculated by using the two-dimensional finite element software, and the heat source of the motor and the thermal conductivity of each component of the motor are determined. The vacuum temperature field of a double redundancy motor is calculated by Workbench software.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM341

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