함정용 다기능 레이다 전원공급기의 능동형 역률 개선 방안 = Active Power Factor Correction Method for Multi-function Radar Power Supply on Surface Ships

다국어 초록 (Multilingual Abstract)

The multi-function radar of surface ships is configured with four faces, enabling detection and tracking in all directions as a fixed radar system. The radar requires an independent power system configuration for each face, and maximum power consumption accounts for a significant portion of the total power consumption of surface ships. Therefore, to ensure the efficient power operation of surface ships, radar power conversion devices must have a power factor control functionality to reduce harmonics during AC to DC power conversion. This paper proposes an active power factor correction method using a Vienna rectifier to address these problems. This rectifier can control the reactive power by detecting the magnitude, phase, and frequency of three-phase power, thus enabling synchronized control of the three-phase AC voltage and current. Moreover, due to the high-speed switching control provided by power semiconductor devices, such as MOSFET and IGBT, the input current can be controlled to closely resemble a sinusoidal waveform, thereby minimizing low-order harmonics that impact the power system, which would allow the radar system to achieve a high power factor under all load conditions and enable the efficient power operation of surface ships.