고조파 제거 및 무효전력 보상을 위한 3상 전력용 능동 필터의 제어에 관한 연구

A Study on Control Scheme of 3-Phase Active Power Filter for Harmonic Elimination and Reactive Power Compensation

The conventional Optimized Injection Method is a good control technique but can't be applied to 3-phase a.e. line. In this paper, a new technique, Time-sharing Method based on basic principle of conventional Optimized Injection Method is introduced to hold the independence of each phase, and the structure of power circuit is improved to realize the new control method. By this scheme it is possible to simplify the control circuit and power circuit. The characteristic of the new control method are investigated and compared with conventional Optimized Injection Method by computer simulation.