黄守道,陈婷?覮,吴轩.基于五阶广义积分器的内置式永磁 同步电机转子位置观测法[J].湖南大学学报:自然科学版,2020,(6):59~67
基于五阶广义积分器的内置式永磁 同步电机转子位置观测法
Rotor Position Estimation Method for Fifth-Order Generalized Integrator Based Interior Permanent Magnet Synchronous Motors
  
DOI:
中文关键词:  内置式永磁同步电机  无传感器控制  反电动势  位置观测误差  五阶广义积分器
英文关键词:Interior Permanent Magnet Synchronous Motor(IPMSM)  sensorless control  Electromotive-Force (EMF)  position estimation error  Fifth-Order Generalized Integrator(FOGI)
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作者单位
黄守道,陈婷?覮,吴轩 (湖南大学 电气与信息工程学院湖南 长沙 410082) 
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中文摘要:
      由于逆变器非线性、磁场空间谐波、检测误差等因素,令滑模观测器系统中的反电动势存在直流偏置和谐波,进而导致了转子位置观测值中6k次谐波脉动生成. 针对上述问题,提出一种基于五阶广义积分器的转子位置滑模观测器,在锁频环确保频率自适应的前提下,完成内置式永磁同步电机无传感器矢量控制系统的精确解耦,改善驱动系统的控制性能. 在五阶广义积分器作用下,反电动势谐波及直流分量将得到更完善的滤除,进而保证了锁相环计算转子位置角度的准确性. 将五阶广义积分器与经典控制系统中的五阶标准积分方程类比,在充分合理简化其参数整定过程的同时保证了转子位置观测系统的快速收敛性. 在与传统二阶广义积分器进行动态响应、干扰抑制等性能方面的比较后,通过仿真和1.5 kW dsPACE半实物实验论证该控制策略的优势和有效性.
英文摘要:
      The inverter nonlinearity, flux spatial harmonics and detection errors give rise to DC offset and harmonics in the back Electromotive Force(EMF) obtained by the sliding mode observer(SMO),which results in harmonic ripple in the position estimates. This paper proposes a fifth-order generalized integrator(FOGI) based rotor position observer to solve the above problems. On the premise of frequency-locked loop(FLL) to ensure frequency adaptation, the FOGI helps to complete the accurate decoupling and improve the control performance of the Interior Permanent Magnet Synchronous Motor(IPMSM) position sensorless drive system. Under the action of the FOGI, the DC components and harmonics of the EMF estimates are more completely filtered.Thereby, the accuracy of rotor position calculated by the Phase-Locked Loop(PLL) can be improved. In this paper, the FOGI is compared with the fifth-order standard integral equation in the classic control system, and its parameter tuning process is fully and reasonably simplified, simultaneously,when the rapid convergence of rotor position estimation system is guaranteed. Finally, after comparing the performance of dynamic response and interference suppression with the traditional second-order generalized integrator(SOGI),the advantages and effectiveness of control strategy are demonstrated through simulation and 1.5 kW dsPACE semi-physical experiments.
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