Position Estimation of Permanent Magnet Synchronous Motor Using Un-known Input Observer

M. Hasegawa, S. Yoshioka, K. Matsui
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引用次数: 4

Abstract

This paper proposes a new position estimation method for Interior Permanent Magnet Synchronous Motor(IPMSM) drives fed by over- modulation mode PWM voltage source inverter. It is being attractive to expand drive region of IPMSM to high speed range for application to electric vehicles, electrical household appliance and so on. Although over-modulation mode PWM voltage source inverter makes it possible to solve above problems, position sensorless drive based on sta- tor voltage knowledge cannot directly be utilized because voltage reference is not equal to inverter output voltage. In this paper, un-known input observer is proposed to estimate rotor position without stator voltage knowledge.
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基于未知输入观测器的永磁同步电机位置估计
针对过调制型PWM电压源逆变器驱动的内嵌式永磁同步电机,提出了一种新的位置估计方法。将永磁同步电动机的驱动范围扩大到高速范围,应用于电动汽车、家用电器等领域具有很大的吸引力。虽然过调制方式的PWM电压源逆变器可以解决上述问题,但由于基准电压不等于逆变器输出电压,不能直接利用基于稳态电压知识的位置无传感器驱动。本文提出了未知输入观测器,在不知道定子电压的情况下估计转子位置。
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