A Sensorless Drive by Applying Test Pulses Without Affecting the Average-Current Samples
作者： F.M.L. De Belie , P. Sergeant , J.A. Melkebeek
DOI: 10.1109/TPEL.2009.2036617
关键词:
摘要: The rotor position of a salient-pole permanent-magnet synchronous machine (PMSM) at standstill or rotating low speed is often estimated by measuring the responses on high-frequency test signals. In some drives, computed important current ripples that are generated supplying PMSM periodically with voltage pulses. Besides these ripples, undesired distortions in average-current samples have been measured. Simulation results revealed caused signal, as it produces nonzero deviation from steady-state stator voltage. this paper, low-speed sensorless strategy discussed where strong reduction aforementioned obtained adapting signals to main assumption an accurate estimation made using controller output. computation adaptive done taking into account restriction dc-bus results, well experimental measurements, indicate effectiveness controlled interior PMSM.
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