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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Fast Control of Filter for Sensorless Vector Control SQIM Drive With Sinusoidal Motor Voltage
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Fast Control of Filter for Sensorless Vector Control SQIM Drive With Sinusoidal Motor Voltage

机译：正弦电动机电压对无传感器矢量控制SQIM驱动器的滤波器的快速控制

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摘要

A pulsewidth-modulated (PWM) voltage applied to a squirrel-cage induction motor (SQIM) can cause high bearing currents, heating of rotor shaft, voltage spike across the motor terminals, etc. Filtering of this PWM voltage to obtain a sinusoidal output voltage can be a solution to this problem. However, a passive $L$–$C$ filter makes the dynamic performance of the drive poor for high-performance control application. In this paper, a feed-forward control strategy for the $L$– $C$ filter is proposed to have a good bandwidth for the filter output voltage. This filter control strategy is introduced along with a sensorless vector control strategy for the SQIM drive. This complete strategy retains the high dynamic performance of the drive even with the $L$–$C$ filter. In this paper, a three-level converter is used as a voltage source inverter for the drive to have a less filter-size requirement. The control strategy is verified on a 7.5-hp SQIM drive with a three-level insulated-gate bipolar-transistor inverter and $L$– $C$ filter. Experimental results validate the high dynamic performance of the drive with filter.
机译：施加到鼠笼式感应电动机（SQIM）上的脉宽调制（PWM）电压会引起高轴承电流，转子轴发热，电动机端子上的电压尖峰等。过滤该PWM电压以获得正弦输出电压可以解决这个问题。但是，对于高性能控制应用，无源$ L $ – $ C $滤波器会使驱动器的动态性能变差。在本文中，提出了用于$ L $ – $ C $滤波器的前馈控制策略，以具有良好的滤波器输出电压带宽。引入了此滤波器控制策略以及SQIM驱动器的无传感器矢量控制策略。即使使用$ L $ – $ C $过滤器，这种完整的策略仍可以保留驱动器的高动态性能。本文将三电平转换器用作驱动器的电压源逆变器，以减少对滤波器尺寸的要求。该控制策略在具有三级绝缘栅双极晶体管逆变器和$ L $ – $ C $滤波器的7.5hp SQIM驱动器上得到了验证。实验结果证明了带滤波器驱动器的高动态性能。

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