S
Seung-Ki Sul
Researcher at Seoul National University
Publications - 579
Citations - 25232
Seung-Ki Sul is an academic researcher from Seoul National University. The author has contributed to research in topics: Torque & Inverter. The author has an hindex of 84, co-authored 560 publications receiving 22490 citations. Previous affiliations of Seung-Ki Sul include University of Wisconsin-Madison.
Papers
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Journal ArticleDOI
New direct torque control of induction motor for minimum torque ripple and constant switching frequency
Jun-Koo Kang,Seung-Ki Sul +1 more
TL;DR: In this article, a direct torque control (DTC) method of an induction machine is proposed which enables the minimum torque ripple control, while maintaining a constant switching frequency, and the proposed strategy improves the performance of the DTC by combining a low-torque ripple characteristic in steady state with the fast torque dynamics.
Journal ArticleDOI
Sensorless drive of surface-mounted permanent-magnet motor by high-frequency signal injection based on magnetic saliency
TL;DR: In this paper, a sensorless control scheme of a surface-mounted permanent magnet (SMPM) motor using high-frequency voltage signal injection method based on the highfrequency impedance difference is presented.
Journal ArticleDOI
Speed sensorless vector control of induction motor using extended Kalman filter
TL;DR: In this paper, an extended Kalman filter is employed to identify the speed of an induction motor and rotor flux based on the measured quantities such as stator currents and DC link voltage.
Journal ArticleDOI
Inverter output voltage synthesis using novel dead time compensation
Jong-Woo Choi,Seung-Ki Sul +1 more
TL;DR: In this article, a dead time compensation method is presented that produces inverter output voltages equal to reference voltages, which can be carried out automatically by an inverter controller for initial setup without any extra hardware.
Proceedings ArticleDOI
Sensorless field orientation control of an induction machine by high frequency signal injection
Jung-Ik Ha,Seung-Ki Sul +1 more
TL;DR: In this article, the rotor flux angle was estimated from stator voltages and currents by injecting a high-frequency signal, which is not a rotating one but a fluctuating one at a reference frame rotating synchronously to the fundamental stator frequency.