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首页> 外文期刊>IEEE Transactions on Power Electronics >A sensorless initial rotor position estimation scheme for a direct torque controlled interior permanent magnet synchronous motor drive
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A sensorless initial rotor position estimation scheme for a direct torque controlled interior permanent magnet synchronous motor drive

机译：直接转矩控制的内部永磁同步电动机驱动器的无传感器初始转子位置估计方案

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摘要

In direct torque control (DTC) scheme, the requirement of the continuous rotor position sensor and coordinate transformation is eliminated since all the calculation is done in stator reference frame. However, the DTC scheme requires the position sensor to determine the initial position of the rotor at starting. Elimination of the shaft-mounted position encoder is a very desirable objective in many applications since this sensor is often one of the most expensive and fragile components in the entire drive system. This paper presents a sensorless method of determining the initial rotor position of a direct torque controlled interior permanent magnet (IPM) synchronous motor drive. The method consists of injecting a high frequency voltage to the windings and examining the effects of the saliency on the amplitude of the corresponding stator current components. This method does not depend on the level of static load and on any motor parameters. The magnet polarity of the rotor at its initial position is also identified using the effect of saliency. Modeling and experimental results verify the effectiveness of the proposed method.
机译：在直接转矩控制（DTC）方案中，由于所有计算都是在定子参考系中完成的，因此消除了对连续转子位置传感器和坐标变换的要求。但是，DTC方案要求位置传感器确定启动时转子的初始位置。在许多应用中，消除安装在轴上的位置编码器是一个非常理想的目标，因为该传感器通常是整个驱动系统中最昂贵，最脆弱的组件之一。本文提出了一种确定直接转矩控制内部永磁体（IPM）同步电动机驱动器初始转子位置的无传感器方法。该方法包括向绕组注入高频电压，并检查凸度对相应定子电流分量幅度的影响。该方法不取决于静载荷的水平以及任何电动机参数。转子在其初始位置的磁体极性也可以通过显着性来识别。建模和实验结果验证了该方法的有效性。

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