Optimization of UPS Output Waveform Based on Single-Phase Bridge Inverter

摘要

Uninterruptible Power Supply (UPS) can provide stable, continuous and uninterruptible power supply, and with the increasing application of UPS, there are higher requirements for the quality of UPS power supply. The inverter is an important part of the UPS system, and its performance directly affects the performance of the whole UPS system. In this paper, the common unidirectional full-bridge inverter is improved. The step wave synthesizer is used to transform the output square wave into step wave, and the number of step wave steps is added to make the output voltage waveform closer to a Sine wave, and finally improve the UPS output voltage waveform to guarantee the power supply quality.