飞轮电池用单绕组磁悬浮开关磁阻电机运行控制研究

发布时间：2018-04-19 08:47

本文选题：飞轮电池 + 单绕组磁悬浮开关磁阻电机　；参考：《江苏大学》2017年硕士论文

【摘要】：人类面临的能源、环境问题日益严峻,全世界对清洁新能源发电、分布式电源、微电网、电动汽车的关注与重视提升到前所未有的高度,与之密切关联的储能技术也成为国内外重要的研究课题之一。飞轮电池作为典型的机械储能装置以其储能密度大、清洁无污染、使用寿命长、效率高等优点吸引众多科研工作者对其进行探索与研究,在电力系统、电动汽车、航空航天等领域也具有广阔的应用前景。磁悬浮开关磁阻电动/发电机(BSRM/G)集开关磁阻电机和磁悬浮技术优势于一体,具有结构简单坚固、控制灵活性高、无机械磨损、无摩擦损耗、临界转速高等优越性能,在高速、低损飞轮电池领域具有重要的研究意义和应用价值。在国家自然科学基金(51377074)资助下,本文以三相12/8极外转子单绕组磁悬浮开关磁阻电动/发电机(SWBSRM/G)为研究对象,围绕电机的悬浮/电动的解耦控制、悬浮/发电、硬件电路设计展开研究,主要研究内容如下:(1)阐述了单绕组磁悬浮开关磁阻电机的结构及悬浮/电动、悬浮/发电复合模(1)阐述了单绕组磁悬浮开关磁阻电机的结构及悬浮/电动、悬浮/发电复合模态下工作机理,给出基于等效磁路法、虚位移法的电感矩阵、径向悬浮力/转矩数学模型的推导过程,并通过有限元仿真进行了验证。(2)针对SWBSRM多变量、强耦合、非线性的复杂特性,通过引入粒子群算法,实现了最小二乘支持向量机(LSSVM)核参数的优化,进而建立电机逆辨识模型,并利用逆辨识模型构成的伪线性模块搭建复合逆系统实现了对电机的解耦逆控制,仿真验证表明此控制策略具有较好的解耦效果和动态响应特性。(3)为减小SWBSRG悬浮发电时绕组铜耗,解决悬浮控制产生的励磁不平衡在续流发电区间引起径向悬浮力干扰问题,提出了一种低铜耗悬浮发电控制策略,即通过对悬浮、励磁、发电区间划分及时长公式推导进而控制同相绕组等电流发电,减弱发电区间的径向干扰力,并闭环调控励磁电流来反馈控制输出电压。搭建了Simplorer和Maxwell联合仿真模型,给出了仿真验证。(4)针对SWBSRM/G硬件电路信号采集量多、精度要求高、运算高速、逻辑处理量大的特点,选择DSP+FPGA联合控制模式。为简化控制系统、节约硬件成本,选用电动/发电一体化的主功率变换电路。依据系统工作环境优选设计了信号采样、驱动电路等其他模块,为进一步实验奠定基础。
[Abstract]:The problems of energy and environment are becoming more and more serious. The attention and attention of the world to clean and new energy generation, distributed power generation, microgrid and electric vehicles has been raised to an unprecedented level.Energy storage technology closely related to it has also become one of the important research topics at home and abroad.As a typical mechanical energy storage device, flywheel battery has the advantages of high energy storage density, clean and pollution-free, long service life, high efficiency and so on.Aerospace and other fields also have a broad application prospects.Magnetic levitated switched reluctance motor / generator BSRM / G integrates the advantages of switched reluctance motor and magnetic levitation technology. It has the advantages of simple structure, high control flexibility, no mechanical wear, no friction loss, high critical speed and so on.Low loss flywheel battery has important research significance and application value.Supported by the National Natural Science Foundation of China, this paper focuses on the three-phase 12 / 8 external rotor single-winding switched magnetoresistive motor / generator SWBSRM / G, focusing on the suspension / electric decoupling control and suspension / generation of the motor.The hardware circuit design is studied. The main research contents are as follows: (1) the structure of the single-winding magnetic levitation switched reluctance motor and the suspension / electric motor are expounded.The structure of single-winding switched reluctance motor (SRM) and its working mechanism in suspension / electric / suspension / power generation composite mode are described. The inductance matrix based on equivalent magnetic circuit method and virtual displacement method is given.The derivation process of the mathematical model of radial suspension force / torque is verified by finite element simulation. (2) aiming at the complex characteristics of SWBSRM multivariable, strong coupling and nonlinear, the particle swarm optimization algorithm is introduced.The kernel parameters of least squares support vector machine (LSSVM) are optimized, and the motor inverse identification model is established, and the decoupling inverse control of the motor is realized by using the pseudo-linear module of the inverse identification model to build the compound inverse system.Simulation results show that this control strategy has good decoupling effect and dynamic response characteristics. In order to reduce copper consumption of windings in SWBSRG suspension generation, the excitation imbalance caused by suspension control causes radial suspension force disturbance in the continuous current generation area.In this paper, a control strategy for low copper consumption suspended power generation is proposed, that is, by deducing the formula of dividing the suspension, excitation and generation interval in time, and then controlling the power generation of the same phase winding, the radial interference force of the generation section is weakened.And closed-loop control excitation current to feedback control output voltage.The simulation model of Simplorer and Maxwell is built, and the simulation verification is given. Aiming at the characteristics of SWBSRM/G hardware circuit, such as high signal acquisition, high precision, high speed of operation and large amount of logic processing, the DSP FPGA joint control mode is selected.In order to simplify the control system and save the cost of hardware, the main power conversion circuit with the integration of electric power and power generation is selected.Other modules, such as signal sampling and driving circuit, are designed according to the working environment of the system, which lays a foundation for further experiments.
【学位授予单位】：江苏大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM352

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