电动工具用高速开关磁阻电机的设计与实现
发布时间：2018-11-15 13:25
【摘要】：开关磁阻电机（Switched Reluctance Motor，简称SR电机）具有结构简单坚固、运行可靠性高、控制灵活、成本低廉等优良性能，其转子由硅钢片叠压而成，无绕组或永磁体，能承受很大的机械离心力，特别适合用在高速/超高速领域。目前在SR电机的实际应用中，很少将SR电机应用于电动工具产品中，本文正是基于这一需求，，研究开发电动工具用高速SR电机本体结构和驱动控制系统，充分发挥SR电机优点，为高速SR电机在电动工具上的应用提供较为完整的基本理论和关键技术支撑。 本文首先介绍了高速SR电机的理论和工程应用情况，综合对比分析目前应用在电动工具中的各种类型电机研究现状，在此基础上设计了一台额定功率1kW、额定转速17000r/min的三相6/4极高速SR样机，并通过Ansoft有限元分析软件对样机进行电磁场分析，优化了结构参数，仿真结果验证了样机设计的正确性。其次研究了几种典型的功率变换主电路，选出适合本实验样机的功率变换主电路，同时为改善SR电机高速运行时换相能力，提出一种可提高电机换相性能的三开关功率变换主电路结构，并进行了仿真对比分析。最后对各模块硬件电路进行设计并实现，在此基础上搭建了高速SR电机实验系统平台，并进行了现场工况实验。实验表明，系统高速运行稳定，达到了设计要求，突破了部分关键技术，验证了本系统设计方案和设计过程的正确性。
[Abstract]:Switched reluctance motor (Switched Reluctance Motor,) has the advantages of simple structure, high reliability, flexible control, low cost and so on. Its rotor is made of silicon steel laminated and has no winding or permanent magnet. Can withstand large mechanical centrifugal force, especially suitable for high-speed / ultra-high speed field. At present, in the practical application of SR motor, the SR motor is seldom used in the electric tool product. Based on this demand, this paper studies and develops the structure and driving control system of the high-speed SR motor for electric tools, so as to give full play to the advantages of the SR motor. It provides the basic theory and key technology support for the application of high speed SR motor in electric tools. This paper first introduces the theory and engineering application of high speed SR motor, synthetically analyzes the research status of various kinds of motors used in electric tools, and then designs a rated power 1 kW. The three-phase 6 / 4 pole high speed SR prototype with rated speed 17000r/min is designed. The electromagnetic field of the prototype is analyzed by Ansoft finite element analysis software, and the structural parameters are optimized. The simulation results verify the correctness of the prototype design. Secondly, several typical power conversion main circuits are studied, and the main power conversion circuits suitable for this experimental prototype are selected. Meanwhile, in order to improve the commutation ability of SR motor at high speed, This paper presents a three-switch power conversion main circuit structure which can improve the commutative performance of the motor, and carries on the simulation contrast analysis. Finally, the hardware circuit of each module is designed and implemented, and a high-speed SR motor experimental system is built on this basis, and the field working condition experiment is carried out. The experiments show that the system runs stably at high speed, meets the design requirements, breaks through some key technologies, and verifies the correctness of the design scheme and design process of the system.
【学位授予单位】：湖南工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM352
本文编号：2333434
[Abstract]:Switched reluctance motor (Switched Reluctance Motor,) has the advantages of simple structure, high reliability, flexible control, low cost and so on. Its rotor is made of silicon steel laminated and has no winding or permanent magnet. Can withstand large mechanical centrifugal force, especially suitable for high-speed / ultra-high speed field. At present, in the practical application of SR motor, the SR motor is seldom used in the electric tool product. Based on this demand, this paper studies and develops the structure and driving control system of the high-speed SR motor for electric tools, so as to give full play to the advantages of the SR motor. It provides the basic theory and key technology support for the application of high speed SR motor in electric tools. This paper first introduces the theory and engineering application of high speed SR motor, synthetically analyzes the research status of various kinds of motors used in electric tools, and then designs a rated power 1 kW. The three-phase 6 / 4 pole high speed SR prototype with rated speed 17000r/min is designed. The electromagnetic field of the prototype is analyzed by Ansoft finite element analysis software, and the structural parameters are optimized. The simulation results verify the correctness of the prototype design. Secondly, several typical power conversion main circuits are studied, and the main power conversion circuits suitable for this experimental prototype are selected. Meanwhile, in order to improve the commutation ability of SR motor at high speed, This paper presents a three-switch power conversion main circuit structure which can improve the commutative performance of the motor, and carries on the simulation contrast analysis. Finally, the hardware circuit of each module is designed and implemented, and a high-speed SR motor experimental system is built on this basis, and the field working condition experiment is carried out. The experiments show that the system runs stably at high speed, meets the design requirements, breaks through some key technologies, and verifies the correctness of the design scheme and design process of the system.
【学位授予单位】：湖南工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM352
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