开关电源的并联运行及其数字均流技术

Digital Technique of Parallel Balanced Current in Switching Power Supply

为提高电源系统的可靠性和冗余能力,首先分析了电源的并联特性及均流的一般原理,又详细分析了几种电源并联均流的控制方案,并在分析直流开关电源模拟量控制均流技术原理及特点的基础上,提出了以双DSP为控制核心,基于CAN总线的数字均流技术方案,实现了数字均流的智能化控制,并在实践中取得了良好的应用效果。

As an attempt to improve the reliability and fault tolerant capacity of power supply systems, this paper makes a detailed analysis of the characteristics of parallel current and the general principle of current share. Besides, it clarifies several control plans of parallel balanced current, introduces the principle and characteristics of average current of analog control for DC switching power supply, and presents a digital control project based on CAN field bus and taking double DSP as its control center. The project realizes intelligent control of digital average current with good effect in actual practice.