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首页> 外文期刊>電気学会論文誌 A:基礎.材料.共通部門誌 >Position Sensorless Speed Estimation in Switched Reluctance Motor Drive with Direct Torque Control: Inductance Vector Angle based Approach
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Position Sensorless Speed Estimation in Switched Reluctance Motor Drive with Direct Torque Control: Inductance Vector Angle based Approach

机译：直接转矩控制的开关磁阻电机驱动器中的无位置传感器速度估计：基于电感矢量角的方法

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摘要

Feedback signals of rotor speed and motor torque are essential in most of Switched Reluctance (SR) motor control applications. An SR motor has highly nonlinear characteristic that does not allow to be modeled by simple equations. In Direct Torque Control (DTC) drive, which enables easy control of torque ripple in the SR motor, position sensor is employed to obtain the feedback signals. Position sensor causes DTC drive not only less reliable but also more expensive. Estimation of feedback signals is required in order to eliminate position sensor. This paper concerns about sensorless speed estimation under the DTC condition and presents a simple method. Simple sensorless speed estimation is proposed based on inductance vector angle. The inductance vector angle is obtained by applying α -β transformation to the phase inductances. A relay triggers a speed calculation circuit according to its band limits and the inductance vector angle. Inside the circuit, triggering time is kept in a memory until the next triggering. Rotor pole pitch is divided by the time difference between two consecutive triggerings. Finally, the estimation circuit outputs the rotor speed. Sensorless speed estimation is simulated and verified experimentally to show its validity.
机译：在大多数开关磁阻（SR）电机控制应用中，转子速度和电机转矩的反馈信号至关重要。 SR电动机具有高度非线性的特性，因此无法通过简单的方程式进行建模。在直接转矩控制（DTC）驱动器中，它可以轻松控制SR电动机中的转矩脉动，采用位置传感器来获取反馈信号。位置传感器导致DTC驱动不仅可靠性降低，而且价格昂贵。为了消除位置传感器，需要估算反馈信号。本文关注DTC条件下的无传感器速度估计，并提出了一种简单的方法。提出了一种基于电感矢量角的简单无传感器速度估计方法。电感矢量角是通过将α-β变换应用于相电感而获得的。继电器根据其带宽限制和电感矢量角触发速度计算电路。在电路内部，触发时间保存在存储器中，直到下次触发为止。转子磁极节距除以两个连续触发之间的时间差。最后，估计电路输出转子速度。仿真并通过实验验证了无传感器速度估计的有效性。

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