一种UPS逆变器分析和设计

本文设计了一种UPS逆变器系统.系统主电路采用双半桥结构，输出电压波形主谐波次数高，使得交流滤波器体积重量得到了有效的改善，系统控制电路采用PWM控制和序列脉冲控制相结合的方式，能准确地完成功率管要求的触发功能.在系统分析过程中，将功率管和磁耦合器件作适当的简化处理，通过机辅分析总结出各种工作状态下电路参数对输出特性的影响，并以此为依据选择和设计主电路各元器件的参数.

ANALYSIS AND DESIGN OF AN UPS INVERTER SYSTEM

An UPS inverter system is designed in this Paper. The double half bridge structure is used in the main circuit. Inverter output voltage waveform is the sixteen step-waves, The combination of the PWM control with the sequence pulse control is used in the control circuit which can perform the transistors functions of transistors. By using CAD technique, the power transistors are thought of as the ideal switches and used for analyzing characteristics of the magnetic coupling device, By analyzing the effect states and the circuit parameters，the basis is provided for the circuit design.