华南理工大学学报(自然科学版) ›› 2009, Vol. 37 ›› Issue (2): 40-44.

• 机械工程 • 上一篇    下一篇

一种微弧氧化逆变电源控制系统

曾敏 陈小红 曹彪 江伟 刘方 王晓东   

  1. 华南理工大学 机械与汽车工程学院, 广东 广州 510640
  • 收稿日期:2008-03-31 修回日期:2008-06-23 出版日期:2009-02-25 发布日期:2009-02-25
  • 通信作者: 曾敏(1970-),男,副教授,博士,主要从事现代电源设备及智能控制技术研究. E-mail:memzeng@scut.edu.cn
  • 作者简介:曾敏(1970-),男,副教授,博士,主要从事现代电源设备及智能控制技术研究.
  • 基金资助:

    广东省科技攻关项目(20078010400050)

Control System of Micro-Arc Oxidation Inverter Power Supply

Zeng Min  Chen Xiao-hong  Cao Biao  Jiang Wei  Liu Fang  Wang Xiao-dong    

  1. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2008-03-31 Revised:2008-06-23 Online:2009-02-25 Published:2009-02-25
  • Contact: 曾敏(1970-),男,副教授,博士,主要从事现代电源设备及智能控制技术研究. E-mail:memzeng@scut.edu.cn
  • About author:曾敏(1970-),男,副教授,博士,主要从事现代电源设备及智能控制技术研究.
  • Supported by:

    广东省科技攻关项目(20078010400050)

摘要: 为满足微弧氧化工艺要求,设计出一种两级逆变式微弧氧化电源,介绍了该电源的控制系统.它以高性能DSP作为控制核心,通过调节输出两组4路PWM(脉宽调制)信号分别驱动前级功率逆变电路和后级斩波逆变电路.功率逆变电路采用有限双极性的控制方式以实现电压的调节,通过控制斩波逆变电路可以得到所需的各种电压波形.同时,该电源控制系统还具有过流、过欠压、过热、参数超限等故障诊断与保护功能.试验结果表明,该控制系统可以实现精密、稳定的电源控制,提高电源的适应能力.

关键词: 微弧氧化, 电源, 逆变器, 控制系统, 斩波

Abstract:

To meet the requirements of micro-arc oxidation, this paper presents a two-stage inverter power supply and introduces its control system. In the proposed control system, a high-performance DSP is used as the control core, and the anterior power and the latter chopper inverter circuits are respectively driven by adjusting two groups of Pulse-Width Modulation (PWM) signals in four lines. The voltage regulation of the power supply is implemented by adopting a limited bipolar control mode in the power converter circuit, and various voltage waveforms are ob- tained by controlling the chopper inverter circuit. Moreover, the proposed control system is of some fault diagnosis and protection functions, such as overcurrent, overvohage-undervoltage, overtemperature and parameter overrun. Experimental results show that this system controls the power supply precisely and steadily and that it improves the adaptability of the power supply.

Key words: micro-arc oxidation, power supply, inverter, control system, chopper