Performance Improvement of a PMSM Sensorless Control Algorithm Using a Stator Resistance Error Compensator in the Low Speed Region

Nung-Seo Park; Min-Ho Jang; Jee-Sang Lee; Keum-Shik Hong; Jang-Mok Kim

Performance Improvement of a PMSM Sensorless Control Algorithm Using a Stator Resistance Error Compensator in the Low Speed Region

Vol. 10, No. 5, pp. 485-490, Sep. 2010

10.6113/JPE.2010.10.5.485

Parameter Estimation

Permanent magnet synchronous motor

Rotor position estimation

Sensorless control

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Abstract

Sensorless control methods are generally used in motor control for home-appliances because of the material cost and manufactureing standard restrictions. The current model-based control algorithm is mainly used for PMSM sensorless control in the home-appliance industry. In this control method, the rotor position is estimated by using the d-axis and q-axis current errors between the real system and a motor model of the position estimator. As a result, the accuracy of the motor model parameters are critical in this control method. A mismatch of the PMSM parameters affects the speed and torque in low speed, steadystate responses. Rotor position errors are mainly caused by a mismatch of the stator resistance. In this paper, a stator resistance compensation algorithm is proposed to improve sensorless control performance. This algorithm is easy to implement and does not require a modification of the motor model or any special interruptions of the controller. The effectiveness of the proposed algorithm is verified through experimental results.

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Cite this article

[IEEE Style]

N. Park, M. Jang, J. Lee, K. Hong, J. Kim, "Performance Improvement of a PMSM Sensorless Control Algorithm Using a Stator Resistance Error Compensator in the Low Speed Region," Journal of Power Electronics, vol. 10, no. 5, pp. 485-490, 2010. DOI: 10.6113/JPE.2010.10.5.485.

[ACM Style]

Nung-Seo Park, Min-Ho Jang, Jee-Sang Lee, Keum-Shik Hong, and Jang-Mok Kim. 2010. Performance Improvement of a PMSM Sensorless Control Algorithm Using a Stator Resistance Error Compensator in the Low Speed Region. Journal of Power Electronics, 10, 5, (2010), 485-490. DOI: 10.6113/JPE.2010.10.5.485.