Jin_Hyuk Park and Kyo-Beum Lee, "Improved DPWM Scheme for Improvement of Grid Current Quality in a Large-Scale Grid-Connected Inverter System with a LCL-Filter," in Proc. CENCON Conf., Oct. 2015, pp. 343–348. > Paper

Paper

International Conference Jin_Hyuk Park and Kyo-Beum Lee, "Improved DPWM Scheme for Improvement of Grid Current Quality in a Large-Scale Grid-Connected Inverter System with a LCL-Filter," in Proc. CENCON Conf., Oct. 2015, pp. 343–348.

2015

본문

This paper proposes an improved discontinuous PWM (DPWM) method in a grid-connected inverter system. When the conventional

60° DPWM is used in the switching method, the output voltage of the inverter has many harmonics compared to the continuous

PWM (CPWM) switching method. In large-scale system, a LCL-filter cannot sufficiency reduce the harmonics of the inverter output

voltage. If these harmonics and the resonance frequency band caused by a grid-connected LCL-filter are overlapped, the grid current

oscillates. To solve this problem, the proposed method continuously changes the discontinuous modulation signal by injecting

triangular wave to modulation signal. The proposed algorithm can reduce the harmonics of inverter output voltage. The proposed

DPWM is verified from PSIM simulation with a 600-kW 2-level grid-connected inverter system.

첨부파일

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Paper 목록
번호	년도	논문명
302	2016	International Conference Seong-Yun Kang and Kyo-Beum Lee, "Improved Switching Selection for Direct Torque Control of a Five-Phase Induction Motor," in Proc. ITEC Conf., Jun. 2016, pp. 651–655.
301	2016	International Conference Se-jin Lee, June-Hee Lee, and Kyo-Beum Lee, "Reduction of DC-link Current Ripple in Unbalanced Three-parallel PV Module Condition," in Proc. ITEC Conf., Jun. 2016, pp. 647–650.
300	2016	International Conference Hye-Ung Shin and Kyo-Beum Lee, "Fault Diagnosis Method for Power Transistors in Switched Reluctance Machine Drive System," in Proc. IPEMC (ECCE-Asia) Conf., May 2016, pp. 2481–2486.
299	2016	International Conference Hye-Ung Shin, Seung Koo Baek, and Kyo-Beum Lee, "Fault Detection and Fault-Tolerant Operation of a Five-Phase Induction Motor Driving System," in Proc. IPEMC (ECCE-Asia) Conf., May 2016, pp. 2487–2492.
298	2016	International Conference Seong-Yun Kang, Hye-Ung Shin, and Kyo-Beum Lee, "Improved Torque Ripple Reduction Method of Five-Phase Induction Motor Using Fuzzy Controller," in Proc. IPEMC (ECCE-Asia) Conf., May 2016, pp. 635–640.
297	2016	International Conference SeungGyu Seo, Yongsoo Cho, and Kyo-Beum Lee, "LCL-Filter Design for Grid-Connected Three-Phase Inverter Using Space Vector PWM," in Proc. IPEMC (ECCE-Asia) Conf., May 2016, pp. 389–394.
296	2016	International Conference Min-Ho Ahn, Jin-Hyuk Park, and Kyo-Beum Lee, "An Optimal Control Method of Clamp Switch for ZVS Bi-Directional DC-DC Converter," in Proc. IPEMC (ECCE-Asia) Conf., May 2016, pp. 635-640.
295	2016	International Conference June-Seok Lee, Yeongsu Bak, Kyo-Beum Lee, and Frede Blaabjerg, "MPC-SVM Method for Vienna Rectifier with PMSG used in Wind Turbine Systems," in Proc. IEEE APEC Conf., Mar. 2016, pp. 3416–3421.
294	2016	International Conference Yeongsu Bak and Kyo-Beum Lee, "Discontinuous PWM for Low Switching Losses in Indirect Matrix Converter Drives," in Proc. APEC Conf., Mar. 2016, pp. 2764–2769.
293	2015	International Conference Yeongsu Bak, June-Seok Lee, and Kyo-Beum Lee, "Control Strategy for Balanced Currents of Indirect Matrix Converter Under Unbalanced Grid Voltage Conditions," in Proc. AFORE Conf., Nov. 2015, pp. 164–164.
열람중	2015	International Conference Jin_Hyuk Park and Kyo-Beum Lee, "Improved DPWM Scheme for Improvement of Grid Current Quality in a Large-Scale Grid-Connected Inverter System with a LCL-Filter," in Proc. CENCON Conf., Oct. 2015, pp. 343–348.
291	2015	International Conference Hye-Ung Shin and Kyo-Beum Lee, "Fault-Tolerant Switched Reluctance Machine Drives Using a Current Park's Vector," in Proc. CENCON Conf., Oct. 2015, pp. 19–24.
290	2015	International Conference Yeongsu Bak, Yongsoo Cho, and Kyo-Beum Lee, "Reverse Matrix Converter for Permanent Magnet Synchronous Motor Drives using a Direct Power Control," in Proc. ECCE Conf., Sep. 2015, pp. 6832–6837.
289	2015	International Conference Seung-Joo Lee, June-Seok Lee, and Kyo-Beum Lee, "High-Efficiency Switching Strategy and Neutral-Point Voltage Control in Single-Phase Three-Level Inverter," in Proc. ECCE Conf., Sep. 2015, pp. 6393–6398.
288	2015	International Conference Yeongsu Bak, Eunsil Lee, Yongsoo Cho, and Kyo-Beum Lee, "Constant Speed Control for a Reverse Matrix Converter under Variable Input Conditions," in Proc. ECCE Conf., Sep. 2015, pp. 5924–5929.

Paper 목록

번호

년도

논문명

302

2016

International Conference

Seong-Yun Kang and Kyo-Beum Lee, "Improved Switching Selection for Direct Torque Control of a Five-Phase Induction Motor," in Proc. ITEC Conf., Jun. 2016, pp. 651–655.

301

2016

International Conference

Se-jin Lee, June-Hee Lee, and Kyo-Beum Lee, "Reduction of DC-link Current Ripple in Unbalanced Three-parallel PV Module Condition," in Proc. ITEC Conf., Jun. 2016, pp. 647–650.