Rotor position estimation scheme with harmonic ripple attenuation for sensorless controlled permanent magnet synchronous motors

<span style="color: black; font-family: 'Times New Roman','serif'; font-size: 9pt; mso-fareast-font-family: 新細明體; mso-fareast-theme-font: minor-fareast; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA; mso-bidi-font-style: italic;" lang="EN-US">This paper presents a high efficiency initial rotor position estimation method for Permanent Magnet Synchronous Motors (PMSM). The approach uses the viable inductance model to analyze the optimal motor injection sine wave frequency as the motor’s test signal. Unlike other high-frequency injection methods, this approach does not require trial and error experiments. The injection frequency is identified by programmable simulations using Matlab. Experimental evaluation of 3-phase PMSM showed that this injection frequency optimization method works successfully. The proposed method can find the optimal injection frequency without experimentation, and outperforms other test signals in terms of accuracy, vibration quantity and noise. This microprocessor-developed 3-phase PMSM control driver can be applied to electrical appliances, machine tools and automation.</span>

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Initial rotor position estimation and sensorless direct torque control of surface-mounted permanent magnet synchronous motors considering saturation saliency

IET Electric Power Applications ◽

10.1049/iet-epa:20070083 ◽

2008 ◽

Vol 2 (1) ◽

pp. 42-48 ◽

Cited By ~ 19

Author(s):

Y. Yan ◽

J.G. Zhu ◽

Y.G. Guo

Keyword(s):

Permanent Magnet ◽

Direct Torque Control ◽

Position Estimation ◽

Torque Control ◽

Permanent Magnet Synchronous Motors ◽

Synchronous Motors ◽

Rotor Position ◽

Rotor Position Estimation

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A Sensorless Initial Rotor Position Estimation for Permanent Magnet Synchronous Machines

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.792.83 ◽

2015 ◽

Vol 792 ◽

pp. 83-89

Author(s):

Ivan Yurievich Krasnov ◽

Sergey Vladimirovich Langraf ◽

Stepan Ivanovich Chobanov

Keyword(s):

Permanent Magnet ◽

Angular Position ◽

Initial Position ◽

Position Estimation ◽

Permanent Magnet Synchronous Machines ◽

Permanent Magnet Synchronous Motors ◽

Synchronous Motors ◽

In Series ◽

The Absolute ◽

Rotor Position Estimation

Permanent magnet synchronous motors for the effective start requires information about an initial position of a rotor. In this regard, most systems use position sensors, which substantially increase a cost of an electrical drive entirely [1-3]. The aim of this article is to develop new method, allowing to determine the absolute angular position of the rotor of the permanent magnet synchronous motors [4,5]. With a certain voltage pulses, in series applied to the motor, stator is magnetized by currents leakage in the windings. This allows, using a special algorithm, to calculate the absolute position of the rotor without using any motor parameters [6]. Simulation results prove the simplicity and efficiency of this method for determining an initial position of the rotor of the permanent magnet synchronous motors. Thus, this method can be widely used in the electrical industry.

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