无轴承同步磁阻电机无传感器检测及控制研究
发布时间：2018-12-17 00:06
【摘要】：无轴承同步磁阻电机(BSRM)是一种结构简单、性能优异的特种电机。BSRM不仅具有结构简单、体积小、转子上无永磁体或励磁绕组、成本低廉等同步磁阻电机的优点,同时还具有无摩擦、无需润滑、无污染、寿命长等磁轴承的优良特性。对比于其它种类的无轴承电机,因为无轴承同步磁阻电机能够获得更高的转子凸极比,容易获得更高的转速与更高的转矩密度,故愈发适用于如航空航天、国防军事等高速高新的场合或领域,因此无轴承同步磁阻电机具有广阔的应用前景与丰富的研究价值。本论文在国家自然科学基金(60974053)和江苏省“333工程”等资助项目的支持下,对二自由度无轴承同步磁阻电机的基本结构与数学模型、无速度传感器自检测技术、无位移传感器自检测技术、数字控制系统以及实验平台进行了详细深入的研究与分析。论文的主要工作内容如下:首先,详细描述了无轴承电机的发展历史、研究现状、未来发展趋势与应用前景。之后,介绍了无轴承同步磁阻电机的电磁转矩与径向悬浮力的产生原理,最后根据磁路原理推导出无轴承同步磁阻电机的转矩子系统数学模型以及依据磁场虚位移法推导出电机的径向悬浮力子系统的数学模型。其次,介绍了锁相环技术(PLL),并将其应用于无轴承同步磁阻电机中,提出了一种基于锁相环的无轴承同步磁阻电机无速度传感器自检测技术。在此基础上设计出无轴承同步磁阻电机无速度传感器,并搭建出电机转速自检测的控制系统,最后通过仿真与实验研究对系统的可行性进行分析验证。从所得出的结论可知,该系统确实具有准确推算出电机转子位置或角速度的能力,且控制系统具有良好的抗干扰能力。再次,对无轴承同步磁阻电机的电感矩阵模型进行深入研究,并运用Ansoft有限元分析仿真软件验证之前推导出来的电机径向悬浮力子系统数学模型的正确性。最后依据电机定子中两套绕组的电感与转子径向位移之间的关系,探索出无轴承同步磁阻电机无位移传感器自检测的方法,搭建出电机无位移传感器的仿真模型,并在环境中对其进行仿真研究,验证该方法的正确性与可靠性。Matlab/Simulink最后,从硬件与软件两个部分入手对无轴承同步磁阻电机的数字控制系统给出详尽的阐述,并构建出实验平台,进行相关实验研究分析,以验证实验平台的可靠性。
[Abstract]:The bearingless synchronous reluctance motor (BSRM) is a kind of special motor with simple structure and excellent performance. BSRM not only has the advantages of simple structure, small volume, no permanent magnet or excitation winding on the rotor, but also low cost. At the same time also has no friction, no lubrication, no pollution, long life of magnetic bearing excellent characteristics. Compared to other types of bearingless motors, bearingless synchronous reluctance motors are more suitable for aerospace because they can achieve higher rotor salient ratios, higher rotational speeds and higher torque densities. Because of the high speed and new field such as national defense and military, the bearingless synchronous reluctance motor has broad application prospect and rich research value. Supported by the National Natural Science Foundation of China (60974053) and Jiangsu Province Project 333, the basic structure and mathematical model of a two-degree-of-freedom bearingless synchronous reluctance motor and the speed sensorless self-detection technique are studied in this paper. Displacement sensorless self-detection technology, digital control system and experimental platform are studied and analyzed in detail. The main work of this paper is as follows: firstly, the history, research status, future development trend and application prospect of bearingless motor are described in detail. Then, the principle of producing electromagnetic torque and radial suspension force of bearingless synchronous reluctance motor is introduced. Finally, according to the principle of magnetic circuit, the mathematical model of the torque subsystem of bearingless synchronous reluctance motor and the mathematical model of the radial suspension force subsystem of the motor are derived according to the magnetic field virtual displacement method. Secondly, the phase-locked loop (PLL),) technology is introduced and applied to bearingless synchronous reluctance motor. A speed sensorless self-detection technique for bearingless synchronous reluctance motor based on phase-locked loop is proposed. On this basis, a bearingless synchronous reluctance motor without speed sensor is designed, and the motor speed self-detection control system is built. Finally, the feasibility of the system is analyzed and verified by simulation and experimental research. From the conclusion, it can be seen that the system has the ability to calculate the rotor position or angular velocity accurately, and the control system has good anti-interference ability. Thirdly, the inductance matrix model of bearingless synchronous reluctance motor is deeply studied, and the correctness of the mathematical model of radial suspension force subsystem is verified by Ansoft finite element simulation software. Finally, according to the relationship between the inductance of the two sets of windings and the radial displacement of the rotor, the self-detection method of the sensorless displacement of the bearingless synchronous reluctance motor is explored, and the simulation model of the sensorless motor is built. The simulation research is carried out in the environment to verify the correctness and reliability of the method. Finally, the digital control system of bearingless synchronous reluctance motor is described in detail from two parts: hardware and software. An experimental platform was constructed to verify the reliability of the platform.
【学位授予单位】：江苏大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM352
[Abstract]:The bearingless synchronous reluctance motor (BSRM) is a kind of special motor with simple structure and excellent performance. BSRM not only has the advantages of simple structure, small volume, no permanent magnet or excitation winding on the rotor, but also low cost. At the same time also has no friction, no lubrication, no pollution, long life of magnetic bearing excellent characteristics. Compared to other types of bearingless motors, bearingless synchronous reluctance motors are more suitable for aerospace because they can achieve higher rotor salient ratios, higher rotational speeds and higher torque densities. Because of the high speed and new field such as national defense and military, the bearingless synchronous reluctance motor has broad application prospect and rich research value. Supported by the National Natural Science Foundation of China (60974053) and Jiangsu Province Project 333, the basic structure and mathematical model of a two-degree-of-freedom bearingless synchronous reluctance motor and the speed sensorless self-detection technique are studied in this paper. Displacement sensorless self-detection technology, digital control system and experimental platform are studied and analyzed in detail. The main work of this paper is as follows: firstly, the history, research status, future development trend and application prospect of bearingless motor are described in detail. Then, the principle of producing electromagnetic torque and radial suspension force of bearingless synchronous reluctance motor is introduced. Finally, according to the principle of magnetic circuit, the mathematical model of the torque subsystem of bearingless synchronous reluctance motor and the mathematical model of the radial suspension force subsystem of the motor are derived according to the magnetic field virtual displacement method. Secondly, the phase-locked loop (PLL),) technology is introduced and applied to bearingless synchronous reluctance motor. A speed sensorless self-detection technique for bearingless synchronous reluctance motor based on phase-locked loop is proposed. On this basis, a bearingless synchronous reluctance motor without speed sensor is designed, and the motor speed self-detection control system is built. Finally, the feasibility of the system is analyzed and verified by simulation and experimental research. From the conclusion, it can be seen that the system has the ability to calculate the rotor position or angular velocity accurately, and the control system has good anti-interference ability. Thirdly, the inductance matrix model of bearingless synchronous reluctance motor is deeply studied, and the correctness of the mathematical model of radial suspension force subsystem is verified by Ansoft finite element simulation software. Finally, according to the relationship between the inductance of the two sets of windings and the radial displacement of the rotor, the self-detection method of the sensorless displacement of the bearingless synchronous reluctance motor is explored, and the simulation model of the sensorless motor is built. The simulation research is carried out in the environment to verify the correctness and reliability of the method. Finally, the digital control system of bearingless synchronous reluctance motor is described in detail from two parts: hardware and software. An experimental platform was constructed to verify the reliability of the platform.
【学位授予单位】：江苏大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM352
【相似文献】
相关期刊论文 前10条
1 宋飞;矿用磁阻电机的研制与开发[J];陕西煤炭;2004年04期
2 丘明;徐U，
本文编号：2383287
本文链接：https://www.wllwen.com/kejilunwen/dianlidianqilunwen/2383287.html
