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Position and Speed Sensorless Control System of Permanent Magnet Synchronous Motor with Parameter Identification

机译：参数辨识的永磁同步电动机无位置速度传感器控制系统

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摘要

The model parameters of a permanent magnet synchronous motor (PMSM) are required for high-performance control and a model-based sensorless control. This paper proposes a sensorless control system of PMSM that does not need parametric information beforehand. The parameters of a PMSM drive system, including the inverter, are identified at standstill and under operating conditions. At first, the initial rotor position is estimated by a signal injection sensorless scheme in which the machine parameters are not required. After the initial position has been estimated, the resistance, including the on resistance of the IGBT, the voltage error caused by dead time in the inverter, and d-axis and q-axis inductances, are identified at standstill. After the motor starts by the signal injection sensorless control, the sensorless scheme changes to an extended EMF estimation scheme. The estimated parameters for the resistance, and d-axis and q-axis inductances are used in such sensorless control. The magnet flux-linkage, which cannot be estimated at standstill, is identified under the sensorless operation at medium and high speeds. The effectiveness of the proposed method is verified by several experimental results.
机译：高性能控制和基于模型的无传感器控制需要永磁同步电动机（PMSM）的模型参数。本文提出了一种不需要参数信息的PMSM无传感器控制系统。 PMSM驱动系统（包括逆变器）的参数在静止和运行条件下均可识别。首先，通过不需要信号注入的无传感器方案估计转子的初始位置，其中不需要机器参数。估算出初始位置后，将确定处于静止状态的电阻，包括IGBT的导通电阻，由逆变器中的死区时间引起的电压误差以及d轴和q轴电感。在通过信号注入无传感器控制启动电动机之后，无传感器方案更改为扩展的EMF估计方案。在这种无传感器控制中使用了电阻，d轴和q轴电感的估计参数。静止状态下无法估算的磁通量链接是在中速和高速下的无传感器操作下识别的。几个实验结果验证了该方法的有效性。

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