Seungjong Yoo, Yongsoo Cho, Kyo-Beum Lee, and Daebong Lee, “Neutral Point Voltage Control Method for Reliability Improvement of UPS System Using Multi-level Inverter,” 전력전자학술대회 논문집, pp. 486–487, 2014. > Paper

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Paper

Domestic Conference Seungjong Yoo, Yongsoo Cho, Kyo-Beum Lee, and Daebong Lee, “Neutral Point Voltage Control Method for Reliability Improvement of UPS System Using Multi-level Inverter,” 전력전자학술대회 논문집, pp. 486–487, 2014.

2014

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본 논문은 멀티레벨 인버터를 이용한 무정전 전원장치 시스템 (UPS; Uninterruptible Power Supply)의 신뢰성 향상을 위한 중성점

전압 불평형 제어 기법을 제안한다. 무정전 전원장치 시스템 (UPS)은 불평형 부하조건 시 직류단에 전압 불평형이 발생되며 이는

출력 전류의 왜곡을 일으켜, 민감한 부하에 손상을 입힐 수 있다. 제안한 제어기는 커패시터 전압 측정을 통해 시간오프셋을

추정한 후 공간 벡터 변조 방식의 변형 없이 중성점 전압 불평형을 제어하여, 직류단의 전압을 평형상태로 유지한다. 또한,

100kW급 UPS 시스템 시뮬레이션 검증을 통해 제어기의 타당성을 입증하였다. 

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179 2016 Domestic Conference
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178 2015 Domestic Conference
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177 2015 Domestic Conference
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176 2015 Domestic Conference
Seung Gyu Seo, Yongsoo Cho, and Kyo-Beum Lee, “Virtual Flux Estimation Using Modified Integrator of a Three-Phase AC/DC Converter for Direct Power Control,” 전력전자학술대회 논문집, pp. 399–400, 2015.
175 2015 Domestic Conference
Seong-Yun Kang, Hye-Ung Shin, and Kyo-Beum Lee, “Field Weakening Control for Five-Phase Induction Motor Drives considering the Effect of the 3rd Harmonic,” 전력전자학술대회 논문집, pp. 343–344, 2015.
174 2015 Domestic Conference
Seungjong Yoo, June-Seok Lee, and Kyo-Beum Lee, “The DPWM Method to Reduce Neutral-Point Voltage Ripple in a Three-Level Inverter,” 전력전자학술대회 논문집, pp. 315–316, 2015.
173 2015 Domestic Conference
Jin-Hyuk Park, Dong Yeob Han, and Kyo-Beum Lee. “Improved DPWM Scheme for Grid-Connected Inverters with an LCL-Filter,” 전력전자학술대회 논문집, pp. 295–296, 2015.
172 2014 Domestic Conference
Yong-Gyu Song, Seung-Joo Lee, June-Seok Lee, and Kyo-Beum Lee, “High Efficient Switching Strategy for Single Phase Three-level NPC Inverters,” 전력전자학술대회 논문집, pp. 500–501, 2014.
171 2014 Domestic Conference
Hyun Woo Sim, June-Seok Lee, Kyo-Beum Lee, and Dae Bong Lee, “Cascaded H-bridge Multilevel Inverter Scheme for Increasing Voltage Level,” 전력전자학술대회 논문집, pp. 496–497, 2014.
열람중 2014 Domestic Conference
Seungjong Yoo, Yongsoo Cho, Kyo-Beum Lee, and Daebong Lee, “Neutral Point Voltage Control Method for Reliability Improvement of UPS System Using Multi-level Inverter,” 전력전자학술대회 논문집, pp. 486–487, 2014.
169 2014 Domestic Conference
Kyun-Seon Ji, Sung-Tak jou, and Kyo-Beum Lee, “Instantaneous Voltage Sag Detection for Dynamic Voltage Restorer using Recursive Least Square Method,” 전력전자학술대회 논문집, pp. 134–135, 2014.
168 2014 Domestic Conference
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167 2014 Domestic Conference
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166 2014 Domestic Conference
Sung Wan Ro, Dae-Keun Choi, and Kyo-Beum Lee, “Model Predictive Control With Space Vector Modulation for Permanent Magnet Synchronous Motor Driven by Three-Level Inverter,” 대한전기학회 전기기기 및 에너지변환시스템부문회 춘계학술대회 논문집, pp. 246–248, 2014.
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