Publication
June-Seok Lee, Raeho Kwak, and Kyo-Beum Lee, "Novel Discontinuous PWM Method for a Single-Phase Three-Level Neutral Point Clamped Inverter with Efficiency Improvement and Harmonic Reduction," IEEE Transactions on Power Electronics, vol. 33, no.11, pp. 9253-9266, Nov. 2018.
2018
PEEMS
-
Oct. 4, 2023
views
1. Authors: June-Seok Lee, Raeho Kwak, and Kyo-Beum Lee
2. Title: Novel Discontinuous PWM Method for a Single-Phase Three-Level Neutral Point Clamped Inverter with Efficiency Improvement and Harmonic Reduction
3. Journal: IEEE Transactions on Power Electronics
4. Vol/no/pp: vol. 33, no.11, pp. 9253-9266
5. Date: Nov. 2018
6. Abstract
: This paper proposes a novel discontinuous pulse-width modulation (DPWM) method to reduce the current harmonics and improve the system efficiency for a single-phase three-level neutral-point clamped inverter. In single-phase inverters, the unipolar pulse-width modulation (UP-PWM) method is commonly used. However, this method has the disadvantage of power losses due to numerous switching operations. Conventional DPWM methods reduce the power losses and improve efficiency but increase the current total harmonic distortion (THD). To overcome these weaknesses, this paper proposes a hybrid DPWM switching method combining two PWM methods: the UP-PWM method and the conventional DPWM method called one-pole clamped PWM method. Since the proposed DPWM method offers all the advantages of both PWM methods, the optimal performance-with regard to the power losses and current THD-is obtained. The combination of two PWM methods is investigated by analyzing the power losses and current THD. Based on the analysis, the process determining the optimal operating condition is introduced. The effectiveness of the proposed DPWM method is demonstrated through simulations and experiments.
- Oct. 4, 2023 Hyun Cheol Moon, June-Seok Lee, and Kyo-Beum Lee, "A Robust Deadbeat Finite Set Model Predictive Current Control Based on Discrete Space Vector Modulation for Grid-Connected Voltage Source Inverter," IEEE Transactions on Energy Conversion, vol 33, no. 4, pp. 1719-1728, Dec. 2018.
- Oct. 4, 2023 Seok-Kyoon Kim, June-Seok Lee, and Kyo-Beum Lee, "Robust Speed Control Algorithm with Disturbance Observer for Uncertain PMSM," International Journal of Electronics, vol. 105, no.8, pp. 1300-1318, Aug. 2018.