Suppression of Injection Voltage Disturbance for High-Frequency Square-Wave Injection Sensorless Drive With Regulation of Induced High-Frequency Current Ripple
Suppression of Injection Voltage Disturbance for High-Frequency Square-Wave Injection Sensorless Drive With Regulation of Induced High-Frequency Current Ripple
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DOI：
10.1109/ipec.2014.6869698
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发表时间：
2014-05
影响因子：
4.4
通讯作者：
Dongouk Kim;Yong-Cheol Kwon;S. Sul;Jang-Hwan Kim;Rae-Sung Yu
中科院分区：
文献类型：
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作者：
Dongouk Kim;Yong-Cheol Kwon;S. Sul;Jang-Hwan Kim;Rae-Sung Yu
在内置式永磁同步电机的方波电压信号注入无传感器驱动中，逆变器的非线性效应会导致注入电压失真，特别是当注入电压较低时。如果发生这种情况，包含转子位置信息的高频（HF）电流信号也可能失真，这直接导致位置估计的错误。本文依次分析了逆变器非线性对注入电压、感应电流纹波和位置估计性能的影响，提出了一种电压注入方法，通过调节高频电流纹波来最小化逆变器非线性的影响。通过仿真和实验，验证了所提方法的性能。实验结果表明，在一定工作条件下，在不增加电流纹波的情况下，在额定电压信号注入15%的情况下，位置估计误差降低了19.7%。此外，无论负载条件如何，位置估计的性能都保持一致。
In the square-wave voltage signal injection sensorless drive of the interior permanent-magnet synchronous machine, the injection voltage can be distorted by the inverter nonlinearity effects especially when the injection voltage is low. If that happens, a high-frequency (HF) current signal which contains the rotor position information could be also distorted, which directly leads to an error in the position estimation. This paper analyzes the effects of the inverter nonlinearity on injection voltage, on induced current ripple, and on the position estimation performance in sequence and proposes a voltage injection method to minimize the impact of the inverter nonlinearity by the regulation of the HF current ripple. By simulations and experiments, the performance of the proposed method has been verified. The experimental results show 19.7% reduction of position estimation error under 15% of rated voltage signal injection without increasing the current ripple at a certain operating condition. Moreover, the performance of position estimation is kept uniform regardless of the loading condition.