矩阵变换器驱动的永磁同步电机直接转矩控制系统研究
发布时间：2018-09-01 21:04
【摘要】：MC(Matrix Converter,矩阵变换器)是一种新型交-交变频器,具有能量可双向流动、无中间大电感和大电容储能环节、体积小、输入功率因数能任意调节等显著优点,因此在电力电子与电力传动行业中越来越受到国内外众多学者的关注。随着电力电子开关器件制造技术、应用技术以及控制理论的快速发展,MC的研究日趋成熟,作为新兴交-交变换器可替代传统的交-交变换器;其应用场合遍及电机驱动、电机容错、航空作动器、空间电源以及风力发电等领域。MC逐步取代传统交-直-交变换器的时代已经到来。PMSM(Permanent Magnet Synchronous Motor,永磁同步电机)体积小、效率高、功率密度高、结构简单、节约能源,所以在工业、交通、军事、航空等重要领域应用广泛。对于PMSM驱动系统而言,磁场定向控制(Field Oriented Control,FOC)和直接转矩控制(Direct Torque Control,DTC)是目前比较成熟的两大控制方法。FOC的固有电流内环的存在影响了驱动系统响应性能,相比较而言,DTC省去了坐标变换,具有系统响应快速的特点,因而本文采用了DTC的方法与MC相结合。主要研究内容分为以下几个方面:(1)对MC的基本结构、工作原理进行分析,用MC替代传统交-直-交变换器,设计了PMSM DTC系统,所设计的系统既保持了DTC快速响应的特点又使系统输入侧的功率因数得到提高。(2)在系统负载转矩和给定转速变化的情况下设计了基于滑模变结构速度控制器的MC驱动PMSM DTC系统。所设计的系统对给定转速变化有较好的抗扰动能力。(3)为了达到更好的控制效果,在系统负载转矩和给定转速变化的情况下利用自抗扰技术又设计了基于自抗扰速度调节器的MC驱动PMSM DTC系统。所设计的基于自抗扰速度调节器的系统对于负载转矩变化和给定转速变化均具有良好的抗扰动能力。上述两种方法所设计的速度调节器应用于PMSM DTC系统中均能提高系统抗负载扰动能力和跟踪给定转速变化的能力。与基于滑模变结构控制速度调节器的系统相比,基于自抗扰速度调节器的系统具有更好的抗负载扰动能力,能够避免滑模变结构控制系统固有抖振的缺点。最后,上述两种方法通过几个仿真实验验证了其可行性和有效性。
[Abstract]:MC (Matrix Converter, matrix converter is a new type of AC-AC converter, which has the advantages of bidirectional energy flow, no middle large inductance and large capacitance, small volume, and the input power factor can be adjusted arbitrarily. Therefore, more and more scholars at home and abroad pay attention to power electronics and power transmission industry. With the rapid development of power electronic switch device manufacturing technology, application technology and control theory, the research of MC has become more and more mature. As a new AC-AC converter, it can replace the traditional AC-AC converter. The era of replacing conventional AC-DC-AC converters in the fields of motor fault tolerance, aeronautical actuator, space power supply and wind power generation has arrived. PMSM (Permanent Magnet Synchronous Motor, permanent magnet synchronous motor (PMSM PMSM permanent magnet synchronous motor) is small in size, high in efficiency, high in power density and simple in structure. Energy conservation, so in industry, transportation, military, aviation and other important fields are widely used. For the PMSM drive system, the magnetic field oriented control (Field Oriented Control,FOC) and the direct torque control (Direct Torque Control,DTC) are two mature control methods. By comparison, the coordinate transformation is eliminated and the system response is fast. Therefore, the method of DTC is combined with MC in this paper. The main research contents are as follows: (1) the basic structure and working principle of MC are analyzed, and the PMSM DTC system is designed by replacing the traditional AC-DC-AC converter with MC. The designed system not only maintains the characteristics of DTC fast response but also improves the power factor of the input side of the system. (2) the MC driving PMSM DTC system based on the sliding mode variable structure speed controller is designed under the condition of the system load torque and the given speed change. The designed system has better anti-disturbance ability to the change of given rotational speed. (3) in order to achieve better control effect, The MC driving PMSM DTC system based on the ADRC is designed by using the active disturbance rejection technique under the condition of the load torque and the given speed change of the system. The designed system based on ADRC has good anti-disturbance ability for load torque change and given speed change. The speed regulator designed by the above two methods can improve the ability of resisting load disturbance and tracking the change of given speed in PMSM DTC system. Compared with the system based on sliding mode variable structure control speed regulator, the system based on ADRC has better resistance to load disturbance and can avoid the inherent chattering of sliding mode variable structure control system. Finally, the feasibility and effectiveness of the two methods are verified by several simulation experiments.
【学位授予单位】：兰州交通大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM341;TP273
本文编号：2218348
[Abstract]:MC (Matrix Converter, matrix converter is a new type of AC-AC converter, which has the advantages of bidirectional energy flow, no middle large inductance and large capacitance, small volume, and the input power factor can be adjusted arbitrarily. Therefore, more and more scholars at home and abroad pay attention to power electronics and power transmission industry. With the rapid development of power electronic switch device manufacturing technology, application technology and control theory, the research of MC has become more and more mature. As a new AC-AC converter, it can replace the traditional AC-AC converter. The era of replacing conventional AC-DC-AC converters in the fields of motor fault tolerance, aeronautical actuator, space power supply and wind power generation has arrived. PMSM (Permanent Magnet Synchronous Motor, permanent magnet synchronous motor (PMSM PMSM permanent magnet synchronous motor) is small in size, high in efficiency, high in power density and simple in structure. Energy conservation, so in industry, transportation, military, aviation and other important fields are widely used. For the PMSM drive system, the magnetic field oriented control (Field Oriented Control,FOC) and the direct torque control (Direct Torque Control,DTC) are two mature control methods. By comparison, the coordinate transformation is eliminated and the system response is fast. Therefore, the method of DTC is combined with MC in this paper. The main research contents are as follows: (1) the basic structure and working principle of MC are analyzed, and the PMSM DTC system is designed by replacing the traditional AC-DC-AC converter with MC. The designed system not only maintains the characteristics of DTC fast response but also improves the power factor of the input side of the system. (2) the MC driving PMSM DTC system based on the sliding mode variable structure speed controller is designed under the condition of the system load torque and the given speed change. The designed system has better anti-disturbance ability to the change of given rotational speed. (3) in order to achieve better control effect, The MC driving PMSM DTC system based on the ADRC is designed by using the active disturbance rejection technique under the condition of the load torque and the given speed change of the system. The designed system based on ADRC has good anti-disturbance ability for load torque change and given speed change. The speed regulator designed by the above two methods can improve the ability of resisting load disturbance and tracking the change of given speed in PMSM DTC system. Compared with the system based on sliding mode variable structure control speed regulator, the system based on ADRC has better resistance to load disturbance and can avoid the inherent chattering of sliding mode variable structure control system. Finally, the feasibility and effectiveness of the two methods are verified by several simulation experiments.
【学位授予单位】：兰州交通大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM341;TP273
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