混合转子定子电励磁无刷同步电机参数计算及其特性仿真

发布时间：2018-01-11 15:18

本文关键词：混合转子定子电励磁无刷同步电机参数计算及其特性仿真　出处：《沈阳工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：定子电励磁无刷同步电机是一种新型的电励磁同步电机,它取消了电刷和滑环,具有结构简单,运行性安全可靠,功率因数可调等优点。其定子上有两套独立的极数不同的绕组,分别称作电枢绕组和励磁绕组;传统转子主要有笼型转子和磁阻转子两类。但是传统转子的耦合能力较差,因此本文提出了具有强耦合能力的隔磁磁障与短路笼条相结合的混合转子结构。目前混合转子定子电励磁无刷同步电机存在两个突出的问题分别为:尚未找到电机参数的准确计算的方法和缺少仿真用的电机数学模型。围绕着两个问题,本文做了以下研究:(1)为了分析电机的基本电磁关系和运行机理,本文采用传统的电机的分析方法,建立了混合转子定子电励磁无刷同步电机的数学模型,推导出了电机的等效电路、电磁转矩表达式和电磁功率的计算公式。(2)为了研究所提出的混合转子的耦合能力,本文研究了混合转子的磁场调制原理,叠加法与绕组函数法相结合,建立了混合转子无刷电励磁同步电机电感参数模型,研究了混合转子定子电励磁无刷同步电机电感参数解析计算方法,通过编制程序对电机的电感参数进行计算,得出了电感参数随转子位置变化的规律。(3)为了研究混合转子定子电励磁无刷同步电机不同运行方式下的运行特性,分别建立了abc坐标系和dq坐标系下的混合转子新型无刷电励磁同步电机的数学模型。根据不同运行方式下的端电压的约束条件,对电机在电动状态下的异步起动、牵入同步和突加负载等性能以及在发电机状态下的空载特性、短路特性、外特性和调整特性等进行了仿真研究。(4)为了验证混合转子定子电励磁无刷同步电机的计算和仿真结果,对样机进行实验研究。为了验证电感参数计算模型的正确性,本文采用静测法对电机的电感参数进行测量。分别对样机在电动运行方式和发电运行方式进行了实验研究,验证了研究方法的正确性。
[Abstract]:The stator of electric excitation brushless synchronous motor is a kind of new electrical excitation synchronous motor, it cancels the brush and slip ring, has the advantages of simple structure, safe and reliable operation, adjustable power factor and so on. There are two independent sets of very different number of windings of the stator, respectively called armature winding and excitation winding; traditional the main rotor cage rotor and reluctance rotor two. But the traditional rotor coupling ability is poor, so this paper put forward the magnetic barrier and short circuit cage combined with hybrid rotor structure with strong coupling capability. The hybrid rotor stator excitation there are two prominent problems respectively: method of brushless synchronous motor the accurate calculation of motor parameters has not been found and the lack of motor mathematical model simulation used. Around two problems, this paper made the following research: (1) to the basic electromagnetic relation and operation analysis of machine motor, this paper By using the method of traditional motor, establishes the mathematical model of hybrid rotor stator electric excitation brushless synchronous motor, deduced the calculation formula of the equivalent circuit of the motor, the electromagnetic torque and power. The expressions of electromagnetic coupling hybrid rotor (2) in order to study the proposed capacity, this dissertation studies the principle of magnetic field modulation hybrid rotor the combination of superposition method and winding function method, hybrid rotor brushless excitation synchronous motor inductance model is established based on hybrid rotor stator excitation analytic calculation method of brushless synchronous motor inductance parameters through the inductance parameter program of motor is calculated, the inductance varies with the rotor position change rule. (3) to study the operating characteristics of hybrid rotor stator electric excitation brushless synchronous motor under different operating modes of the hybrid rotor ABC coordinates and DQ coordinates are established A new mathematical model for brushless excitation synchronous motor. According to the constraint conditions of terminal voltage under different operating modes of the starting of asynchronous motor in electric condition, synchronization and load performance and load characteristics in the generator under the condition of short-circuit characteristic, external characteristic and adjustment characteristics are simulated study. (4) the results of calculation and simulation to validate the hybrid rotor stator electric excitation brushless synchronous motor, experiments were carried out on the prototype. In order to verify the validity of the calculation of inductance parameter model, this paper adopts static measurement of inductance motor parameters were measured respectively. The prototype in electric operation mode and operation mode of power generation the experimental study verified the correctness of the research method.

【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM341

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