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Starting Procedure of Rotational Sensorless PMSM in the Rotating Condition

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6 Author(s)
Shun Taniguchi ; Dept. of Electr. Eng. & Biosci., Waseda Univ., Tokyo ; Shinsuke Mochiduki ; Toshifumi Yamakawa ; Shinji Wakao
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This paper investigates a starting procedure of rotational sensorless permanent magnet synchronous motor (PMSM) in the rotating condition, which is suitable for some applications with higher maximum rotor frequency and longer current sampling time. Instantaneous estimation of initial rotor position and frequency, right after gates start, is essential for restarting the operation of inverters. Existing estimation methods are not available for the aforementioned applications because of their higher maximum rotor frequency and longer current sampling time. To cope with this problem, we propose a novel initial rotor frequency estimation method. The proposed estimation method is verified by experiments using a 2-kW interior PMSM and a numerical simulation.

Published in:

IEEE Transactions on Industry Applications  (Volume:45 ,  Issue: 1 )