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首页> 外文期刊>Electric Power Applications, IET >Implementation of sensorless DC-link capacitorless inverter-based interior permanent magnet synchronous motor drive via measuring switching-state current ripples
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Implementation of sensorless DC-link capacitorless inverter-based interior permanent magnet synchronous motor drive via measuring switching-state current ripples

机译：通过测量开关状态电流纹波实现基于无传感器DC链无电容器逆变器的内部永磁同步电动机驱动

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摘要

This study proposes a sensorless speed-control system for a DC-link capacitorless inverter-based interior permanent magnet synchronous motor (IPMSM) drive system via measuring switching-state current-ripples. By measuring the current-ripple of each pulse-width modulation switching-state, the rotor position of the IPMSM can be estimated. As a result, the hardware of a high-frequency sinusoidal voltage or current source is not required. In addition, by suitably selecting the different levels of the fictitious DC-link voltage and compensating the duty cycle of the switching interval, the estimated rotor position error can be effectively reduced to nearly 50%. A 32-bit digital signal processor, TMS-320LF-2407A, is used to execute the rotor position estimation algorithm and the speed-controller. Experimental results validate the theoretical analysis. The proposed sensorless IPMSM drive can be operated from 3 to 2000 r/min. This study proposes a method to implement a DC-link capacitorless inverter IPMSM drive system and improve its performance without injecting any high-frequency voltage or current.
机译：本研究通过测量开关状态电流纹波，为基于直流母线无电容器逆变器的内部永磁同步电动机（IPMSM）驱动系统提出了一种无传感器速度控制系统。通过测量每个脉宽调制开关状态的电流纹波，可以估算IPMSM的转子位置。结果，不需要高频正弦电压或电流源的硬件。此外，通过适当地选择虚拟直流母线电压的不同电平并补偿切换间隔的占空比，可以将估计的转子位置误差有效地减小到接近50％。一个32位数字信号处理器TMS-320LF-2407A用于执行转子位置估计算法和速度控制器。实验结果验证了理论分析。建议的无传感器IPMSM驱动器可在3至2000 r / min的速度下运行。这项研究提出了一种在不注入任何高频电压或电流的情况下，实现无直流链式无电容器逆变器IPMSM驱动系统的方法。

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