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A Novel Sensorless Control Approach for IPMSM Using Extended Flux Based PI Observer for Washing Machine Applications

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  • Control Theory and Applications
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Abstract

Improvement of the low-speed sensorless position control for an interior permanent magnet synchronous motor (IPMSM), which drives a horizontal axis washing machine drum, extended-flux (EF) model-based PI observer (PIO) system is proposed. This control is designed to estimate the derivatives of the EF components, which are voltage components, from which the rotor position information is extracted. Motor parameters change during the operation because of the load and temperature, and those changes affect the performance of sensorless IPMSM drive, especially at low-speed operation. For satisfactory low-speed operation, observer gains should be carefully selected to reduce the influence of measurement noise and un-modeled dynamics. Linear quadratic (LQR) control method is used to calculate the optimal coefficients of a PIO to improve low-speed performance. The PI observer is chosen for its capability to decouple modeling uncertainties and measurement noise. The effectiveness of the proposed sensorless method is verified by the simulation on MATLAB/Simulink and experimental results in a 900W IPMSM drive for washing machine. The proposed estimator achieves stable operation at 87 rpm 100% and 45 rpm 25% load torque conditions. It has a much better dynamic performance and improved capability and is robust for speed and torque variations in the system.

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Authors and Affiliations

  1. Faculty of Electrical and Electronics Engineering, Electrical Engineering Department, Istanbul Technical University, Istanbul, 34467, Turkey

    Emrah Salman & Murat Yilmaz

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  1. Emrah Salman
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  2. Murat Yilmaz
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Correspondence to Murat Yilmaz.

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Competing Interests

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Emrah Salman received his B.Sc. degree in electrical engineering in 2008, and an M.Sc. degree in 2011, all from Istanbul Technical University (ITU), Istanbul, Turkey. His research interests include sensorless control of IPMSM, power electronic circuit design, and simulation, embedded software design for power electronic systems.

Murat Yilmaz received his B.Sc. degree from Electrical Engineering Department, Istanbul Technical University (ITU), Istanbul, Turkey, in 1995 and his M.Sc. and Ph.D. degrees from the same university, 1995 and 2005, respectively. He was a Postdoctoral Researcher at the University of Illinois at Urbana-Champaign (UIUC) between 2007–2008 and a Visiting Scholar between 2011–2012. He is a senior member of IEEE. He is currently an Associated Professor at the Istanbul Technical University. His research interests include power electronics and electrical machine design, control, optimization and reliability modeling in motor drives and electric drive vehicles including electric, and hybrid and plug-in electric vehicles.

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This work is partly supported by Arcelik Research and Development Center Power Electronics Department. The authors would like to express their gratitude for their technical and experimental infrastructure support.

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Salman, E., Yilmaz, M. A Novel Sensorless Control Approach for IPMSM Using Extended Flux Based PI Observer for Washing Machine Applications. Int. J. Control Autom. Syst. 21, 2313–2322 (2023). https://doi.org/10.1007/s12555-021-0745-1

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  • DOI: https://doi.org/10.1007/s12555-021-0745-1

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