J. Yoo* and S. –K. Sul, "Direct MTPA Tracking Control of Sensorless IPMSM in Low-Speed Region," in IEEE Transactions on Industrial Electronics, vol. 72, no. 2, pp. 1271-1280, Feb. 2025.
J. Lee, J. Yoo* and S. -K. Sul, "Thermal Monitoring of Induction Motors with DC Injection Considering Inverter Nonlinearity Compensation Error," in IEEE Transactions on Energy Conversion, vol. 39, no. 4, pp. 2581-2590, Dec. 2024.
J. Yoo, J. -H. Lee* and S. -K. Sul, "FEA-Assisted Experimental Parameter Map Identification of Induction Motor for Wide-Range Field-Oriented Control," in IEEE Transactions on Power Electronics, vol. 39, no. 1, pp. 1353-1363, Jan. 2024.
J. Yun, J. Yoo, S. Cui* and S. -K. Sul, "Model Predictive Control for Six-Step Operation of PMSM Based on Adapted Fast Gradient Method," in IEEE Transactions on Power Electronics, vol. 38, no. 5, pp. 5952-5962, May 2023.
Y. -R. Lee*, J. Yoo, I. Hwang and S. -K. Sul*, "Analysis of Position Estimation Error in Signal-Injection Sensorless Control Induced by Inverter dv/dt-Based Current Measurement Noise," in IEEE Transactions on Power Electronics, vol. 38, no. 1, pp. 839-851, Jan. 2023.
J. Yoo, H. -S. Kim and S. -K. Sul, "MTPA Tracking Control of Sensorless IPMSM Based on Square-Wave Voltage Signal Injection," in IEEE Transactions on Power Electronics, vol. 37, no. 10, pp. 12525-12537, Oct. 2022.
J. Yoo and S. -K. Sul, "Dynamic Overmodulation Scheme for Improved Current Regulation in PMSM Drives," in IEEE Transactions on Power Electronics, vol. 37, no. 6, pp. 7132-7144, June 2022.
J. Yoo, H. -S. Kim and S. -K. Sul, "Design of Frequency-Adaptive Flux Observer in PMSM Drives Robust to Discretization Error," in IEEE Transactions on Industrial Electronics, vol. 69, no. 4, pp. 3334-3344, April 2022.
H. -S. Kim, J. Yoo and S. -K. Sul, "Online MTPA Operation of IPMSM Based on Dual-Loop Control in Polar Coordinates," in IEEE Transactions on Power Electronics, vol. 37, no. 4, pp. 4431-4441, April 2022.
J. Yoo, J. Lee and S. Sul, "Analysis of Instability in Torque Control of Sensorless PMSM Drives in Flux Weakening Region," in IEEE Transactions on Power Electronics, vol. 36, no. 9, pp. 10815-10826, Sept. 2021.
J. Yoo, et al., "Stator Resistance Estimation Using DC Injection with Reduced Torque Ripple in Induction Motor Sensorless Drives," in IEEE Transactions on Industry Applications, vol. 56, no. 4, pp. 3744-3754, July-Aug. 2020.
To be presented.
To be presented.
To be presented.
H. Kim, J. Yoo and S. -K. Sul, "Harmonic Current Regulation of SMPMSM by Discrete-Time Current Controller Design," 2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia), Jeju Island, Korea, Republic of, 2023, pp. 669-674.
J. Yun, J. Yoo, S. Cui and S. -K. Sul, "Fast Gradient Method Based on Dynamic Programming in Model Predictive Control for PMSM Drives," 2022 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2022, pp. 1-7.
J. Yoo, Y. -R. Lee, H. Kim and S. -K. Sul, "Shielding Technique for Noise Reduction in Hall-Effect Current Sensor of Voltage Source Inverter," 2022 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2022, pp. 1-5.
J. Yoo, J. -H. Lee and S. -K. Sul, "FEA-Assisted Experimental Parameter Identification of Induction Motor," 2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia), Himeji, Japan, 2022, pp. 789-794.
Y. -R. Lee, J. Yoo and S. -K. Sul, "Switching Frequency Signal-Injection Sensorless Control Robust to Non-Ideal Characteristics of Inverter System for Dual Three-Phase PMSM," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), Vancouver, BC, Canada, 2021, pp. 4761-4768.
J. Yoo, I. Hwang, Y. -R. Lee and S. -K. Sul, "Gain Scheduling of Full-Order Flux Observer for Sensorless PMSM Drives Considering Magnetic Spatial Harmonics," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), Vancouver, BC, Canada, 2021, pp. 4769-4774.
J. Yoo and S. -K. Sul, "Stability Analysis of PI-Controller-Type Position Estimator for Sensorless PMSM Drives in Flux Weakening Region," 2021 IEEE Transportation Electrification Conference & Expo (ITEC), Chicago, IL, USA, 2021, pp. 434-438.
J. Yoo and S. -K. Sul, "Effect of Speed Estimation Error on Control Stability in Model-Based Sensorless PMSM Drives," 2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia), Singapore, Singapore, 2021, pp. 531-536.
J. Yoo and S. -K. Sul, "Analysis of Torque Control Stability of PMSM Sensorless Drives in Flux Weakening Region," 2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia), Nanjing, China, 2020, pp. 1493-1498.
J. Lee, J. Yoo and S. -K. Sul, "Stator Resistance Estimation using DC Injection Robust to Inverter Nonlinearity in Induction Motors," 2020 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2020, pp. 2425-2430.
J. Yoo and S. -K. Sul, "Dynamic Overmodulation for Improved Current Regulation of PMSM," 2020 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2020, pp. 5368-5374.
J. Yun, J. Yoo, H. -S. Jung and S. -K. Sul, "Simple Overmodulation Scheme for Improved Dynamic Performance of IPMSM," 2020 IEEE Transportation Electrification Conference & Expo (ITEC), Chicago, IL, USA, 2020, pp. 901-905.
J. Yoo, J. Lee, S. -K. Sul and N. A. Baloch, "Torque Ripple Reduction in Stator Resistance Estimation using DC Current Injection for Induction Motor Sensorless Drives," 2019 IEEE Energy Conversion Congress and Exposition (ECCE), Baltimore, MD, USA, 2019, pp. 7057-7063.
J. Yoo, J. Lee and S. -K. Sul, "Design of Full-Order Flux Observer for Induction Motor Drive Robust to Rotor Time Constant Variation," 2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia), Busan, Korea (South), 2019, pp. 1-6.
J. Yoo, Y. Lee and S. -K. Sul, "Back-EMF Based Sensorless Control of IPMSM with Enhanced Torque Accuracy Against Parameter Variation," 2018 IEEE Energy Conversion Congress and Exposition (ECCE), Portland, OR, USA, 2018, pp. 3463-3469.
J. Yoo and S. -K. Sul, "Analysis of Torque Control Stability of PMSM Sensorless Drives in Flux Weakening Region."
J. Yoo, J. Lee and S. -K. Sul, "Design of Full-Order Flux Observer for Induction Motor Drive Robust to Rotor Time Constant Variation."