Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2005.07b
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- Pages.1489-1491
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- 2005
Neutral line current elimination method for Active power filter of three phase four-wire power system
중성선 전류 제거를 위한 3상 4선식 능동 전력 필터
- Min, Joon-Ki (Chungbuk Natl' Univ. Electrical Eng.) ;
- Kim, Hyo-Sung (Kongju Natl' Univ. Cont. & Measur. Eng.) ;
- Choi, Jae-Ho (Chungbuk Natl' Univ. Electrical Eng.)
- Published : 2005.07.18
Abstract
This paper proposes a design method using PQR instantaneous power theory on the active power filter, unbalanced nonlinear load condition and unbalanced source voltage condition in three-phase four-wire systems. For reduction of current harmonics and neutral current, the control structure including repetitive controller is proposed and controller gain is designed. For fully-digital implementation, ramp comparison PWM method was adopted. Simulation results verify good performance of the proposed current control strategy on the shunt APFs.
Keywords