在PMSM应用中分析和补偿因传感电阻引起的相位电流测量误差
Xin Cheng1,2, Jinfeng Hu2, Ye Yu2
1School of Information Engineering, Wuhan University of Technology, Wuhan 430070, China.
Sensors (Basel, Switzerland)
|March 13, 2024
概括
这项研究解决了常磁同步电机 (PMSM) 控制中的当前采样错误. 一个新的PI型观察器有效地弥补了这些错误,减少了扭矩脉冲,提高了转速控制的准确性.
科学领域:
- 电气工程 电气工程
- 控制系统 控制系统
- 电动机器 电动机器 电动机器
背景情况:
- 导向场控制 (FOC) 对永久磁铁同步电机 (PMSM) 的性能至关重要.
- 精确的相位电流检测对于PMSM中闭环控制至关重要.
- 当前采样电阻中的寄生参数引入错误,降低PMSM控制.
研究的目的:
- 调查由寄生电感和电容引起的电流采样错误的形成机制.
- 提出和验证在线观察和补偿当前采样错误的方法.
- 为了抑制扭矩脉冲并提高PMSM的旋转速度控制精度.
主要方法:
- 分析由于寄生元素造成的当前采样错误的形成.
- 开发一个比例整体 (PI) 类型的观察器,用于在线误差估计.
- 实施低通波器 (LPF) 来获得当前采样偏差.
- 将错误补偿集成到相位电流闭环控制中.
- 使用Matlab/Simulink模拟和实验验证的验证.
主要成果:
- 该研究阐明了寄生性参数如何导致电流采样错误和扭矩波动.
- 拟议的PI类型观察员有效地在线估计和补偿当前的抽样错误.
- 在PMSM中扭矩脉冲被开发的补偿方法显著抑制.
- 实验结果证实了增强的旋转速度控制精度.
结论:
- 拟议的在线观察和补偿方法有效地减轻了PMSM当前的采样错误.
- 这种方法可以减少扭矩波动,提高转速控制精度.
- 该方法为提高PMSM在各种应用中的性能提供了一个实用的解决方案.
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