3kW逆变电源的主电路设计  

Main Circuit Design of 3 kW Inverter

作　　者：陈静 陈洪立[1] 江先志[1] 田芬芳 

机构地区：[1]浙江理工大学机械与自动控制学院,浙江杭州310018

出　　处：《成组技术与生产现代化》2017年第3期14-17,共4页Group Technology & Production Modernization

摘　　要：介绍了3 kW逆变电源的主电路设计方案.采用SPWM调制方式,将24 V直流电转换为220 V工频交流电.首先采用反激电路为系统提供所需的电源;接着利用推挽升压电路将低压直流电升压;最后通过比较三角波和调制波的大小,生成SPWM波,从而控制IGBT的开关,将升压后直流电逆变为50 Hz的220 V交流电.从电源的输出波形及负载性能方面说明了该设计方案的可行性.This paper introduces a main circuit design scheme of 3 kW inverter using SPWM modulation to turn DC power supply(24 V) into AC power(220 V,50 Hz).First,necessary power to the system by the flyback transformer is provided.Second,the DC is boosted by a Push-Pull circuit.Finally,the H-bridge circuit is controlled by the SPWM which is generated by comparing the voltage of the triangular wave and the modulation sine wave,and turn the Step-up voltage DC to AC(50 Hz,220 V).The power supply's output waveform and load performance shows that the design is feasible.

关 键 词：反激电路 推挽电路 SPWM 全桥逆变 IGBT 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]