【作者】 李响；

【导师】 王秀和；

【作者基本信息】 山东大学 ， 电机与电器， 2015， 硕士

【摘要】 开关磁阻电机调速系统(Switch Reluctance Motor Drive,简称SRD)具有结构简单、成本低、可靠性高、效率高、控制灵活等很多优点,在现代的工业控制领域中受到了普遍的关注。由于转子上没有永磁体或绕组,开关磁阻电机具有较高的可靠性,适合应用于恶劣的环境或场合。在性能方面,开关磁阻电机具有频繁正反转、调速性能好、过载能力强、在宽广的调速范围内效率高等优点。近年来,开关磁阻电机的研究取得了显著的进步,并且已经成功应用在家电、电动车、航空等多种领域。本文针对一台5.5kW、三相12/8极的开关磁阻电机,完成了对其调速系统的设计,主要的工作如下：介绍了开关磁阻电机调速系统的发展历史,并对其运行原理、数学模型、性能特点以及发展趋势进行了阐述。提出了开关磁阻电机调速系统的总体框架,同时对开关磁阻电机调速系统主控制电路进行了介绍：以TI公司的高性能、多功能数字信号处理器TMS320F2812作为主控制芯片,设计了TMS320F2812的外围接口电路、电流反馈电路、位置检测电路、PWM输出电路以及控制面板接口电路。功率变换电路在开关磁阻电机调速系统中起到提供电能及开关作用,它的两端分别连接着电源与电机各相绕组,其性能的好坏对开关磁阻电机调速系统性能指标有直接影响。本文对开关磁阻电机调速系统的功率变换电路和驱动电路的设计进行了详细的介绍,通过对常用功率变换电路拓扑结构性能和适用场合的介绍和比较,采用了适合于本系统的不对称半桥式功率变换主电路；并选择了IGBT作为主开关器件,且对其参数进行了计算选型；IGBT驱动电路选择QP12W05KS-37作为驱动芯片；同时设计了IGBT缓冲电路、电流检测电路以及电源电路。开发了开关磁阻电机调速系统控制面板的总体框架,包括可编程逻辑芯片、数码管显示电路、按键控制电路以及通信电路四个部分；对控制面板的核心——可编程逻辑芯片EPM7064AETC进行了介绍；根据数码管的显示原理,设计了数码管显示电路以及选择了ICM7228A作为其驱动芯片,并详细阐述了ICM7228A的几种显示驱动方法；同时设计了按键控制电路和通信电路；最后根据模块化设计给出了控制面板的程序设计方案。按照运行前检查与准备、空载试验和负载试验三个阶段对所开发的开关磁阻电机调速系统进行调试与实验。在现场调试的过程中,逐步解决遇到的问题,最终得到了较好的试验结果,同时证明了本文设计的开关磁阻电机调速系统的正确性。更多还原

【Abstract】 Switched reluctance drive (SRD) has a lot of advantages that include simple structure, low cost, high reliability, high efficiency, flexible control, etc. It has received widespread attention in the field of modern industrial control. And it has been used in a variety of fields of home appliances, electric vehicles, and aviation. In this paper, the design of speed governing system of a 5.5kW,12/8-pole switched reluctance motor has been completed. The main work is as follows:This paper introduces the history of switched reluctance drive and describes its operating principle, mathematical model as well as the performance characteristics. In addition, the hardware design of the main control circuit of SRD is introduced. Based on the master chip of DSP TMS320F2812, the interface circuits of DSP, current feedback circuit, position detection circuit, PWM output circuit and a control panel interface circuit have been designed.The power conversion circuit plays the role of providing power and switch in the SRD, and its two ends are connected to the power supply and the winding of each phase. The performance of power conversion circuit has a direct impact on the SRD. In this paper, the design of the power conversion circuit and drive circuit of the SRD is introduced in detail.Through the presentations and comparison of commonly used power conversion circuits, the asymmetric half-bridge power conversion circuit is adopted. Besides IGBT is selected as the main switching devices, and its parameters were calculated. QP12W05KS-37 is selected as the driver chip of IGBT drive circuit. Meanwhile the specific structure and component selection of IGBT snubber circuit, current detection circuit and power supply circuit were introduced.The overall framework of control panel is introduced. It includes four parts of programmable logic chip, digital display circuit, key control circuit and communication circuit. The programmable logic chip EPM7064AETC which is the core of control panel is described. According to the principle of digital display, the digital display circuit is designed. ICM7228A is selected as the driver chip and several display driving methods of ICM7228A are elaborated.According to three stages of pre-run inspection and preparation, no-load test and load test, the designed SRD is tested and debugged. On the process of test problems are solved gradually. Ultimately we get satisfying results, meanwhile the results confirm the correctness of the design of SRD.更多还原