인버터 에어컨용 역률제어기능을 갖는 단상능동정류기

In this paper, a Single-phase Active Rectifier (SAR) with high power factor capability for inverter air-conditioner is adopted for satisfying the international standards of input current harmonics, IEC 1000-3-2. Comparing the conventional boost power factor correction circuit, one diode drop is reduced in the power flow path of the SAR circuit, so the system efficiency is improved. To apply the control IC, such as UC3854, ML4821 and so forth, to the SAR, the adequate sensing circuits are proposed. The design rules of passive components and two control loops are also presented. The proto-type SAR circuit with 3㎾ power consumption is builted and tested to verify the operation of the proposed circuit.