Domestic Journals Dong Yeob Han, Jae Seung Yoon, Yongsoo Cho, and Kyo-Beum Lee, "Improved Transition Method for Sensorless Operation of Interior Permanent Magnet Synchronous Motor Drives," The Transactions of the Korean Institute of Electrical Engineers, vol. 65, no. 8, pp. 1362–1368, Aug. 2016.
2016
본문
This paper proposes the improved transition scheme for a sensorless drive of an interior permanent magnet synchronous motor
(IPMSM). In order to operate the IPMSM, the current controller can be used until 300 rpm for the initial operation. After that, the
control method of IPMSM is changed to the speed controller for the sensorless control method. At that point, the rotor speed
overshoot is generated due to the rapid change of the current reference for the speed controller. The proposed algorithm is able to
reduce the overshoot of a rotor speed by compensating the estimated feedforward value to the speed controller. The feedforward
value of the current reference is estimated by using a coordinate transformation and is approximated to the current reference after
the transition of the control mode. The effectiveness of the proposed scheme is verified by experiments using an IPMSM drive
system.
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