Sungjoon Cho, Yun Jang, Sebong Jeon, and Kyo-Beum Lee, "A Reliable Suppression Method of High Frequency Circulating Current in Parallel Grid Connected Inverters," in Proc. ECCE Conf., Sep./Oct. 2019, pp. 1026–1031. > Paper

Paper

International Conference Sungjoon Cho, Yun Jang, Sebong Jeon, and Kyo-Beum Lee, "A Reliable Suppression Method of High Frequency Circulating Current in Parallel Grid Connected Inverters," in Proc. ECCE Conf., Sep./Oct. 2019, pp. 1026–1031.

2019

본문

This paper introduces a method to reduce circulating current with high frequency in parallel inverters. The high frequency component

of circulating current is generated by output voltage discrepancy of each inverter module in parallel. When inverter modules are

connected in parallel and have individual digital controller, the multiple carriers for PWM cannot be synchronized without special

compensation method. The traditional compensation method is based on carrier synchronization by additional communication or

reference signal. However, the existing compensation methods are increasing system complexity and maintenance cost. This paper

proposes an improved reduction method by adjusting carrier’s period according to the magnitude of zero sequence current. The

proposed method can be implemented only by adding S/W code. The characteristics of circulating current due to phase difference

between carries is also analyzed. The proposed method is verified by PSIM simulation.

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Paper 목록
번호	년도	논문명
167	2020	International Conference Sang-Won An and Kyo-Beum Lee, "A Reliability Improvement Method for Three-Level Inverters with Modified VSVPWM," in Proc. WoW Conf., Nov. 2020.
166	2019	International Conference Min-Geun Song, Seok-Min Kim, and Kyo-Beum Lee, "A Synchronized Switching Technique for Elimination of Unexpected Output Pulses in Hybrid Active NPC inverter," in Proc. IFEEC Conf., Nov. 2019, pp. 816–821.
165	2019	International Conference Samer Saleh Hakami, Ibrahim Mohd Alsofyani, and Kyo-Beum Lee, "Direct Torque Contol of IM Fed by 3L-NPC Inverter with Simple Flux Regulation Technique," in Proc. SCEMS Conf., Nov. 2019.
164	2019	International Conference Sang-Hun Kim, Seok-Min Kim, and Kyo-Beum Lee, "Open-Switch Fault Detection for Hybrid ANPC Inverter Based on Current Distortion," in Proc. SCEMS Conf., Nov. 2019.
163	2019	International Conference Ye-Ji Kim, Seok-Min Kim, and Kyo-Beum Lee, "A Switching Method for Improving Lifetime of DC-Link Capacitors in Hybrid ANPC Inverters," in Proc. SCEMS Conf., Nov. 2019.
162	2019	International Conference Sze Sing Lee, Chee Shen Lim, Yam P. Siwakoti, Nik Rumzi Nik Idris, Ibrahim Mohd Alsofyani, and Kyo-Beum Lee, "A New Unity-Gain 5-Level Active Neutral-Point-Clamped (UG-5L-ANPC) Inverter," in Proc. CENCON Conf., Oct. 2019, pp. 213–217.
161	2019	International Conference Young Jae Lee, Yeongsu Bak, and Kyo-Beum Lee, "Dynamic Characteristic Improvement of Phase-Shift Full-Bridge Center-Tapped Converters Using a Model Predictive Control," in Proc. CENCON Conf., Oct. 2019, pp. 100–103.
160	2019	International Conference Sung-Soo Jeon, Yeongsu Bak, and Kyo-Beum Lee, "Reduction of DC-Link Voltage Fluctuation for Hydraulic Turbine Generation Systems Using Back-to-Back Converters," in Proc. CENCON Conf., Oct. 2019, pp. 75–78.
159	2019	International Conference Samer Saleh Hakami, Ibrahim Mohd Alsofyani, and Kyo-Beum Lee, "Improved Constant Switching Frequency Torque Regulator based DTC of IM Fed by 3L-NPC Inverter for Wide Speed Region," in Proc. CENCON Conf., Oct. 2019, pp. 42–46.
열람중	2019	International Conference Sungjoon Cho, Yun Jang, Sebong Jeon, and Kyo-Beum Lee, "A Reliable Suppression Method of High Frequency Circulating Current in Parallel Grid Connected Inverters," in Proc. ECCE Conf., Sep./Oct. 2019, pp. 1026–1031.
157	2019	International Conference Sze Sing Lee, Chee Shen Lim, Yam P. Siwakoti, and Kyo-Beum Lee, "Single-Stage Common-Ground Boost Inverter (S2CGBI) for Solar Photovoltaic Systems," in Proc. ECCE Conf., Sep./Oct. 2019, pp. 4229–4233.
156	2019	International Conference Bong-Hyun Kwon, Kyu-Chul Bae, Seok-Min Kim, and Kyo-Beum Lee, "Detecting Method for an Open-Switch Fault of SiC MOSFET and Si IGBT in Hybrid ANPC Inverter System," in Proc. ECCE Conf., Sep./Oct. 2019, pp. 2928–2932.
155	2019	International Conference Seok-Min Kim and Kyo-Beum Lee, "A Modified Third Harmonic Pulse-Width Modulation for Reduced Switching Loss in Cascaded H-Bridge Multilevel Inverters," in Proc. CSGRES Conf., Jun. 2019, pp. 472–476.
154	2019	International Conference Ho-Sung Kang, Seok-Min Kim, Yeongsu Bak, and Kyo-Beum Lee, "A Controller Design for a Stability Improvement of an Integrated Charging System in Hybrid Electric Vehicle," in Proc. CSGRES Conf., Jun. 2019, pp. 141–146.
153	2019	International Conference Seok-Min Kim and Kyo-Beum Lee, "Circuit Design and Control Method of Electric Vehicle Battery Charger Using Traction Motor and Inverter," in Proc. ICPE (ECCE-Asia) Conf., May 2019, pp. 3021–3026.

Paper 목록

번호

년도

논문명

167

2020

International Conference

Sang-Won An and Kyo-Beum Lee, "A Reliability Improvement Method for Three-Level Inverters with Modified VSVPWM," in Proc. WoW Conf., Nov. 2020.

166

2019

International Conference

Min-Geun Song, Seok-Min Kim, and Kyo-Beum Lee, "A Synchronized Switching Technique for Elimination of Unexpected Output Pulses in Hybrid Active NPC inverter," in Proc. IFEEC Conf., Nov. 2019, pp. 816–821.