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Automatika : journal for control, measurement, electronics, computing and communications, Vol. 58 No. 4, 2017.

Original scientific paper

https://doi.org/10.1080/00051144.2018.1453441

Constrained field-oriented control of permanent magnet synchronous machine with field-weakening utilizing a reference governor

Tino Jerčić ; Faculty of Electrical Engineering and Computing, Department of Electrical Machines Drives and Automation, University of Zagreb, Zagreb, Croatia
Šandor Ileš ; Faculty of Electrical Engineering and Computing, Department of Electrical Machines Drives and Automation, University of Zagreb, Zagreb, Croatia
Damir Žarko ; Faculty of Electrical Engineering and Computing, Department of Electrical Machines Drives and Automation, University of Zagreb, Zagreb, Croatia
Jadranko Matuško ; Faculty of Electrical Engineering and Computing, Department of Electrical Machines Drives and Automation, University of Zagreb, Zagreb, Croatia

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Abstract

This paper presents a complete solution for constrained control of a permanent magnet synchronous machine. It utilizes field-oriented control with proportional-integral current controllers tuned to obtain a fast transient response and zero steady-state error. To ensure constraint satisfaction in the steady state, a novel field-weakening algorithm which is robust to flux linkage uncertainty is introduced. Field weakening problem is formulated as an optimization problem which is solved online using projected fast gradient method. To ensure constraint satisfaction
during current transients, an additional device called current reference governor is added to the existing control loops. The constraint satisfaction is achieved by altering the reference signal. The reference governor is formulated as a simple optimization problem whose objective is to minimize the difference between the true reference and a modified one. The proposed method is implemented on Texas instruments F28343 200 MHz microcontroller and experimentally verified on a surface mounted permanent magnet synchronous machine.

Keywords

Permanent magnet machines; vector control; optimization; PI control; nonlinear control systems; field weakening

Hrčak ID:

203414

URI

https://hrcak.srce.hr/203414

Publication date:

18.6.2018.

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