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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Saliency-Based Permanent Magnet Machine Position Sensorless Drive Using Proposed PWM Injection and Shunt-Based Current Sensing for Position Estimation
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Saliency-Based Permanent Magnet Machine Position Sensorless Drive Using Proposed PWM Injection and Shunt-Based Current Sensing for Position Estimation

机译：基于显着的永磁机定位无传感器驱动，使用所提出的PWM喷射和基于分流的电流检测位置估计

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摘要

For saliency-based position sensorless drives, the switching frequency pulsewidth modulation (PWM) voltage injection can achieve noise-free position estimation which is suited for high-performance motion systems. However, considering the switching frequency injection, multiple phase currents should be sampled per PWM cycle instead of single average current. It leads to the implementation issue on the space-vector PWM (SVPWM) inverter using shunt resistor current sensing for machine control. In this article, a modified PWM injection instead of SVPWM injection is proposed for the saliency-based drive using shunt current sensing. It is concluded that at least two transient currents can be sampled per PWM cycle based on the proposed PWM control. More importantly, the field-oriented control is maintained when the saliency-based drive is applied. A 2 kW permanent magnet (PM) machine is used for the experimental verification. This article includes the position estimation comparison using either the proposed PWM injection with shunt resistors or standard SVPWM with Hall-effect sensors.
机译：对于基于显着性的位置无传感器驱动器，开关频率脉冲宽度调制（PWM）电压注入可以实现适合高性能运动系统的无噪声位置估计。但是，考虑到开关频率注入，应每PWM周期采样多相电流而不是单平均电流进行采样。它导致空间 - 矢量PWM（SVPWM）逆变器上的实施问题，使用对机器控制的分流电阻电流检测。在本文中，提出了使用分流电流检测的基于显着的驱动器的改进的PWM喷射而不是SVPWM注射。得出结论，基于所提出的PWM控制，每个PWM周期可以采样至少两个瞬态电流。更重要的是，当应用了显着的驱动器时，维持面向现场的控制。 2千瓦永磁体（PM）机器用于实验验证。本文包括使用所提出的PWM注入与分流电阻或带有霍尔效应传感器的标准SVPWM的位置估计比较。

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