开关磁阻电机转矩脉动抑制策略研究
发布时间：2019-06-13 23:28
【摘要】：开关磁阻电机(Switched Reluctance Motor,SRM或SR电机)以其结构简单、成本低、可靠性高、转速范围宽等优点受到广泛关注,近年来得到迅速发展,但是由于其自身的双凸极结构以及绕组电流的高度非线性带来了转矩脉动大、噪声大的弊端,限制了其在诸多领域的应用。减小SR电机转矩脉动,拓宽其应用领域,已成为SR电机领域的研究热点之一。针对这一问题,本文在SR电机直接转矩控制策略研究基础上,重点讨论了 12扇区下的直接转矩控制、换相区矢量优化和磁链无差拍直接转矩控制三种控制方案。首先在查阅大量国内外有关SR电机文献的基础上,阐述了 SR电机的发展背景及研究现状,并深入分析了转矩脉动产生的原因。通过Ansoft二维有限元仿真获得SR电机的磁链特性和转矩特性,建立了电机的模型。利用MATLAB/Simulink对SR电机的直接转矩控制算法进行了仿真研究。其次在分析基本电压矢量直接转矩控制转矩脉动大的问题基础上,提出了 12扇区下的SR电机直接转矩控制方案。在MATLAB/Simulink环境下搭建了系统仿真图,并与传统6扇区下的直接转矩控制作了对比分析,验证了算法的可行性。同时通过仿真分析,发现在换相区出现脉动突增的现象,并从理论上解释了该现象产生的原因,提出了换相区矢量优化的方法,并在MATLAB/Simulink环境下搭建了系统仿真图,验证了优化空间电压矢量对转矩脉动抑制的作用。进一步分析发现由于直接转矩控制的滞环Bang-Bang控制是一种容差控制,针对此问题提出了磁链无差拍直接转矩控制方法,基于本周期反馈转矩和磁链与给定值的误差基础上,推导出下一控制周期能补偿转矩和磁链的空间电压矢量,并由相邻基本电压矢量合成。然后在磁链无差拍控制理论基础上,根据系统框图在MATLAB/Simulink环境下搭建了仿真图,并与传统直接转矩控制进行了稳态和动态的仿真对比,通过仿真,可看出磁链无差拍对转矩脉动具有更好的抑制效果。最后在硬件实验平台上对12扇区下的直接转矩控制及换相区矢量优化做了实验分析,实验结果表明,这两种方法在实际减小转矩脉动方面有一定效果。
[Abstract]:Switched reluctance motor (Switched Reluctance Motor,SRM or SR motor) has been widely concerned because of its simple structure, low cost, high reliability and wide speed range. In recent years, it has been developed rapidly. However, due to its own doubly salient structure and the high nonlinear winding current, it has brought the disadvantages of large torque pulsation and large noise, which limits its application in many fields. To reduce the torque fluctuation of SR motor and broaden its application field has become one of the research hotspots in the field of SR motor. In order to solve this problem, based on the research of direct torque control (DTC) strategy of SR motor, this paper focuses on three control schemes: direct torque control (DTC) in 12 sectors, vector optimization in commutation region and flux chain deadbeat direct torque control (DTC). First of all, on the basis of consulting a large number of domestic and foreign literature on SR motor, this paper expounds the development background and research status of SR motor, and deeply analyzes the causes of torque pulsation. The flux linkage and torque characteristics of SR motor are obtained by Ansoft two-dimensional finite element simulation, and the model of the motor is established. The direct torque control algorithm of SR motor is simulated by MATLAB/Simulink. Secondly, based on the analysis of the problem of large torque fluctuation in basic voltage vector direct torque control (DTC), a direct torque control scheme for SR motor in 12 sectors is proposed. The simulation diagram of the system is built in MATLAB/Simulink environment, and compared with the direct torque control (DTC) in the traditional 6 sectors, the feasibility of the algorithm is verified. At the same time, through simulation analysis, it is found that the phenomenon of sudden increase of pulsation in the commutation region is found, and the cause of the phenomenon is explained theoretically, and the method of vector optimization of commutation region is put forward, and the system simulation diagram is built in MATLAB/Simulink environment to verify the effect of optimizing space voltage vector on torque pulsation suppression. It is further analyzed and found that the hysteretic Bang-Bang control of direct torque control is a kind of tolerance control. In order to solve this problem, a flux deadbeat direct torque control method is proposed. Based on the feedback torque and the error between flux linkage and given value, the space voltage vector of torque and flux chain can be compensated in the next control period, and the space voltage vector can be synthesized by adjacent basic voltage vectors. Then, on the basis of the theory of flux zero beat control, the simulation diagram is built in MATLAB/Simulink environment according to the system block diagram, and the steady state and dynamic simulation comparison is carried out with the traditional direct torque control. Through the simulation, it can be seen that the flux linkage deadbeat has a better suppression effect on torque pulsation. Finally, the direct torque control (DTC) and vector optimization of commutation region under 12 sectors are analyzed on the hardware experimental platform. The experimental results show that the two methods have some effect in reducing torque pulsation.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM352
本文编号：2498907
[Abstract]:Switched reluctance motor (Switched Reluctance Motor,SRM or SR motor) has been widely concerned because of its simple structure, low cost, high reliability and wide speed range. In recent years, it has been developed rapidly. However, due to its own doubly salient structure and the high nonlinear winding current, it has brought the disadvantages of large torque pulsation and large noise, which limits its application in many fields. To reduce the torque fluctuation of SR motor and broaden its application field has become one of the research hotspots in the field of SR motor. In order to solve this problem, based on the research of direct torque control (DTC) strategy of SR motor, this paper focuses on three control schemes: direct torque control (DTC) in 12 sectors, vector optimization in commutation region and flux chain deadbeat direct torque control (DTC). First of all, on the basis of consulting a large number of domestic and foreign literature on SR motor, this paper expounds the development background and research status of SR motor, and deeply analyzes the causes of torque pulsation. The flux linkage and torque characteristics of SR motor are obtained by Ansoft two-dimensional finite element simulation, and the model of the motor is established. The direct torque control algorithm of SR motor is simulated by MATLAB/Simulink. Secondly, based on the analysis of the problem of large torque fluctuation in basic voltage vector direct torque control (DTC), a direct torque control scheme for SR motor in 12 sectors is proposed. The simulation diagram of the system is built in MATLAB/Simulink environment, and compared with the direct torque control (DTC) in the traditional 6 sectors, the feasibility of the algorithm is verified. At the same time, through simulation analysis, it is found that the phenomenon of sudden increase of pulsation in the commutation region is found, and the cause of the phenomenon is explained theoretically, and the method of vector optimization of commutation region is put forward, and the system simulation diagram is built in MATLAB/Simulink environment to verify the effect of optimizing space voltage vector on torque pulsation suppression. It is further analyzed and found that the hysteretic Bang-Bang control of direct torque control is a kind of tolerance control. In order to solve this problem, a flux deadbeat direct torque control method is proposed. Based on the feedback torque and the error between flux linkage and given value, the space voltage vector of torque and flux chain can be compensated in the next control period, and the space voltage vector can be synthesized by adjacent basic voltage vectors. Then, on the basis of the theory of flux zero beat control, the simulation diagram is built in MATLAB/Simulink environment according to the system block diagram, and the steady state and dynamic simulation comparison is carried out with the traditional direct torque control. Through the simulation, it can be seen that the flux linkage deadbeat has a better suppression effect on torque pulsation. Finally, the direct torque control (DTC) and vector optimization of commutation region under 12 sectors are analyzed on the hardware experimental platform. The experimental results show that the two methods have some effect in reducing torque pulsation.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM352
【参考文献】
相关期刊论文 前10条
1 何昆仑;许爱德;曹玉昭;王雪松;;基于12扇区的开关磁阻电机直接转矩控制脉动抑制研究[J];电机与控制应用;2016年10期
2 许爱德;何昆仑;曹玉昭;;船舶电力推进中开关磁阻电机直接转矩控制策略[J];大连海事大学学报;2015年02期
3 张云;徐衍亮;孔辉;李元东;;电流最优的多变量静态神经网络开关磁阻电机控制[J];电工技术学报;2013年08期
4 肖霄;蔡森;陈雪波;;三相开关磁阻电机直接转矩控制系统的研究[J];机械工程与自动化;2013年01期
5 俞枭辰;王家军;;开关磁阻电机线性模型的建模与仿真研究[J];杭州电子科技大学学报;2012年06期
6 邱银;郝润科;赵龙;王磊;;基于Maxwell2D的开关磁阻电机特性仿真[J];电机与控制应用;2012年10期
7 蔡骏;邓智泉;;基于电感线性区模型的开关磁阻电机无位置传感器技术[J];中国电机工程学报;2012年15期
8 吴玉飞;刘闯;张磊;;四相无电容裂相式开关磁阻电机的调速控制[J];电机技术;2012年02期
9 薛梅;夏长亮;王慧敏;谢细明;;基于DSP的开关磁阻电机磁链特性检测与神经网络建模[J];电工技术学报;2011年02期
10 胡鹏;杨玉岗;;开关磁阻发电机非线性建模与仿真[J];微特电机;2010年11期
，本文编号：2498907
本文链接：https://www.wllwen.com/kejilunwen/dianlidianqilunwen/2498907.html
