CONFERENCE PAPER
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Burgos, R.P. , Kshirsagar, P. , Lidozzi, A. , Jihoon Jang , Wang, F. , Boroyevich, D. , Seung-Ki Sul
Abstract
This paper presents a rotor position controller for sensorless vector control of permanent magnetsynchronous machines (PMSM) based on a synchronous d-q frame phase-locked loop (PLL). Extending the capabilities of PLL's for grid-connected converters using feedback linearization to ensure a constant dynamic response regardless of the operating region and rotor speed, the proposed controller takes advantage of the sinusoidal and balanced PMSM back-EMF voltages synchronizing the estimated and actual d-q frames. The resultant controller structure is readily linearized providing an accurate design tool based on frequency response specifications. A complete design procedure is provided, together with simulation and experimental results with a 3.5 kW PMSM drive, all of which verify the excellent results attained by the proposed PLL-basedposition controller.