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Voltage Feedback Current Control Scheme for Improved Transient Performance of Permanent Magnet Synchronous Machine Drives

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3 Author(s)
Yong-Cheol Kwon ; Seoul Nat. Univ., Seoul, South Korea ; Sungmin Kim ; Seung-Ki Sul

This paper proposes a novel control scheme for the fast current control of permanent magnet synchronous machines. The proposed method mainly works in the transient state of current control without deteriorating steady-state characteristics. The proposed method is applicable in a wide range of speed: in the speed below the base speed and in the flux weakening region. Using the proposed method, the reference values of currents are modified so that the currents follow the so-called “shortcut” trajectory in the coordinate plane. The effectiveness of the proposed method is confirmed by computer simulations and experiments. The settling time is reduced by 55% compared with that of the conventional method.

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Industrial Electronics, IEEE Transactions on  (Volume:59 ,  Issue: 9 )