基于精确纹波抵消的快速响应PFC预调节器单位功率因数控制

Power-factor preregulators are commonly used in electronic equipments for minimizing the injection of current harmonics into the mains power line. However, the bandwidth of conventional preregulators are usually configured to be very small in order to achieve near-unity power factor, and this inevitably gives rise to poor dynamic response. Ripple estimation/cancellation method is used to eliminate...