中文摘要：

根据微弧氧化技术要求,研制了一种基于高频变换的全数字化大功率微弧氧化电源.介绍了系统的组成及工作原理,详述了采用两级全桥PWM控制实现多特性输出的设计方案.采用DSP全数字化控制,可以使系统按照需求实现多特性输出.试验测试和用户使用验证表明,该电源可稳定输出变频变幅等多种波形组合,满足微弧氧化工艺需求,使用可靠.

英文摘要：

Proposed in this paper is a high-frequency power supply with fully digital control for micro-arc oxidation.The authors introduce the structure and working principle of the system,and describe the design of two-stage full-bridge inverter with PWM for multi-characteristic output in detail.With the adoption of fully-digital DSP control,the system can output multi-characteristic waveforms as desired.Experiment and operation results show that the proposed power supply fully meets the requirements of micro-arc oxidation and is capable of outputting waveforms with variable frequency and amplitude.