作者：付瑶, 谭智力, 于珊

作者单位：中国地质大学(武汉)机械与电子信息学院, 湖北 武汉 430074

关键词：SG3525控制; 两级变换; 脉冲宽带调制; 保护电路

摘要：

介绍一种基于SG3525控制的车载逆变电源的工作原理和电路设计。主电路采用典型两级变换的逆变结构:第1级变换通过SG3525控制器产生高频脉冲宽带调制(PWM)波,对输入信号升压整流;第2级变换通过NE556和CD4013芯片搭建逆变控制电路,将直流信号变换成工频信号;设计电池过压、欠压,输出过流、过热和输出欠压等保护电路。经验证该逆变电源具有可靠性高、电路简单、体积小等优点。

Design of vehicle inverter power supply based on SG3525 control

FU Yao, TAN Zhili, YU Shan

College of Mechanical and Electronic Information, China University of Geosciences, Wuhan 430074, China

Abstract: Working principle and circuit design of vehicle inverter power supply based on SG3525 control were introduced. The main circuit adopted typical two-stage inverter structure transformation. The first-stage transformation produced high frequency PWM wave using SG3525 controller to invert and rectify the input signal. The second-stage transformation transformd the DC signal into a frequency signal through inverter control circuit which was built using NE556 and CD4013. In addition, the over-voltage/under-voltage protection circuits as well as the output over-current/over-heat protection circuits were designed. The inverter power source has advantages of high reliability, simple structure, small size, etc.

Keywords: SG3525 control; two-stage inverter; PWM; protection circuit

2015, 41(1): 77-80  收稿日期: 2013-11-15;收到修改稿日期: 2014-1-7

基金项目: 国家自然科学基金项目(50807049)

作者简介: 付瑶(1989-),女,硕士研究生,研究方向为电力与电子技术。

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