电动车用开关磁阻电动机驱动控制系统研究

发布时间：2018-12-08 16:58

【摘要】：随着“中国制造2025”战略的实施和相关配套政策的出台,我国制造业到了从价值链低端向高端制造业、从制造大国向制造强国迈进的关键阶段。面临气候变暖、环境恶化和石油资源枯竭的全球挑战,以节能和绿色发展为核心的新能源汽车领域成为国家大力推动的重点领域,电动车也将成为未来汽车行业发展的主流趋势。本课题以开关磁阻电机(Switched Reluctance Motor,SRM)为研究对象,对开关磁阻电机的模型、运行原理、控制策略等进行了深入分析与研究。论文首先依据开关磁阻电机的结构和工作原理,推导开关磁阻电机的数学方程,并根据数学方程,分别建立相应的线性模型、准线性模型以及非线性模型,并分析开关磁阻电机控制策略极其应用范围。其次针对电动车用开关磁阻电动机低速运行时会产生大转矩脉动的情况,采用直接瞬时转矩的控制策略来进行抑制。设计了直接瞬时转矩控制策略的转矩控制环,根据相应的数学模型和控制原理对其进行仿真建模分析,并将直接瞬时转矩控制和电流斩波控制下产生的转矩脉动进行对比,验证直接瞬时转矩对转矩脉动的有效抑制。然后针对电动车用开关磁阻电动机在高速运行时的实际需求,对采用带有中间抽头的开关磁阻电机提出双绕组驱动器拓扑结构,并对电动运行状态下的不同工作模式进行详细分析。通过切换绕组和切换控制策略,实现对开关磁阻电动机高速运行时的驱动控制,并依据控制策略的原理进行了仿真验证。最后以英飞凌公司生产的32位微控制器TC1782为主控芯片,搭建一个1kW的开关磁阻电机实验平台。根据实验平台的需求分别设计硬件系统和软件系统,并编写相应的程序对控制策略进行实验,验证在开关磁阻电机不同转速时采取不同控制策略的正确性。
[Abstract]:With the implementation of the "made in China 2025" strategy and related supporting policies, China's manufacturing industry has reached a critical stage from the low end of the value chain to the high-end manufacturing industry and from a large manufacturing country to a manufacturing power. Facing the global challenges of global warming, environmental degradation and depletion of oil resources, the new energy automotive field, which is centered on energy conservation and green development, has become a key area promoted by the country. Electric vehicle will also become the mainstream trend of the future automobile industry development. Taking switched reluctance motor (Switched Reluctance Motor,SRM) as the research object, the model, operation principle and control strategy of switched reluctance motor are deeply analyzed and studied in this paper. Firstly, according to the structure and working principle of switched reluctance motor, the mathematical equation of switched reluctance motor is deduced, and the corresponding linear model, quasilinear model and nonlinear model are established according to the mathematical equation. The control strategy of switched reluctance motor and its application range are analyzed. Secondly, direct instantaneous torque control strategy is used to suppress the large torque ripple of switched reluctance motor (SRM) when it is running at low speed. The torque control loop of direct instantaneous torque control strategy is designed and simulated according to the corresponding mathematical model and control principle. The torque ripple produced by direct instantaneous torque control and current chopped control is compared. The direct instantaneous torque is proved to be effective in restraining torque ripple. Then aiming at the actual demand of switched reluctance motor for electric vehicle when it is running at high speed, the topology structure of double winding drive is proposed for switched reluctance motor with middle tap. At the same time, the different working modes under the electric running state are analyzed in detail. By switching windings and switching control strategy, the drive control of switched reluctance motor at high speed is realized, and the simulation is carried out according to the principle of the control strategy. Finally, the 32 bit microcontroller TC1782 produced by Infineon is used as the main control chip to build an experimental platform of switched reluctance motor (SRM) based on 1kW. According to the requirements of the experimental platform, the hardware system and software system are designed, and the corresponding program is written to test the control strategy, which verifies the correctness of different control strategies at different speed of switched reluctance motor.
【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】：TM352;U469.72

【参考文献】