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3상 양방향 인버터의 계통전압 불평형 및 왜곡에 의한 계통전류 보상
- 3상 양방향 인버터의 계통전압 불평형 및 왜곡에 의한 계통전류 보상
- Translated Title
- The Compensation of the Grid Current Distortion caused by the Grid Voltage Unbalance and Distortion for 3-Phase Bi-Directional DC to AC Inverter
- 양승대; 김승민; 최주엽; 최익; 송승호; 이상철; 이동하
- DGIST Authors
- 이상철; 이동하
- Issue Date
- 한국태양에너지학회 논문집, 32(3), 228-234
- 3-Phase inverter; Bi-directional; Unbalance and distortion compensation; 3상 인버터; 양방향; 불평형 및 왜곡 보상
- This paper presents the algorithm of the compensation of the grid current distortion caused by the grid voltage unbalance and distortion in 3-phase bi-directional DC to AC inverter. Usually 3-phase grid system has unbalance and distortion because of connecting 1-phase and non-linear load with 3-phase load using same input node. Controlling 3-phase inverter by general method under the unbalanced and distorted grid voltage, the grid current has distortion. This distortion of the grid current cause the grid voltage distortion again. So, it need to control the grid current balanced and non-distorted, even the grid voltage gets unbalanced and distorted. There are some complex method to compensate the gird current distortion. it sugest simple method to solve the problem. PSIM simulation is used to validate the proposed algorithm.
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