Optimization Study of High-Efficiency Rectifier Circuits for Uninterruptible Power Supply Systems

Uninterruptible Power Supply (UPS) is a kind of equipment that can supply power to other equipment’s in an uninterrupted way, which can ensure that the key equipment’s can continue to operate stably in the face of power grid failure. Therefore, uninterruptible power supply system is of utmost importance in the modern power system. The aim of this paper is to optimize rectifier circuits in uninterruptible power supply system that rely on three-phase bridge full-wave rectifier circuits. Build a model using LTspice and simulate it, compare and analyze the waveform characteristics of the output voltage of the load under different filtering schemes, and propose optimization strategies based on actual production. As one of the key components of the UPS system, the rectifier circuit can directly affect the efficiency with stability of the whole system. Hence, it is important to optimize the high efficiency rectifier circuit to improve the overall performance of the UPS system.