DC-DC变换器并联系统的均流技术
作者：蔡宣三 上传时间：2005/3/20 15:00:24
摘要：较小功率的DC-DC变换器模块并联与一个集中的大功率电源相比，有许多优点，例如：效率高，可运行于更高频率，因而动态性能好，负载调整率好；并联模块可以实现冗余；输出功率可以扩展，并易于维护等。分布电源系统中，无论前端变换器和负载变换器，标准模块的并联都已得到了广泛应用。
对于DC-DC变换器模块的并联运行，附加均流控制目的是使负载电流在各模块间平衡均匀分配。为了设计一个均流性能优越以及高可靠的DC-DC变换器并联系统，人们已开发和分析了许多方法，如下垂法、主从均流法、自动均流法、民主均流法等。 叙词：DC-DC变换器 并联运行模块 均流 下垂法 主从法 自动均流法 民主均流法 均流母线 Abstract：The paralleling of lower-power DC-DC converter modules offers a number of advantages over a single,high power,centralized power supply.The advantages include higher efficiency,better dynamic response due to a higher frequency of operation,and better load regulation.Paralleling allows for redundancy implementation,expandability of output power and ease of maintenance.Paralleling of standardized DC-DC converter modules is the approach widely used in distributed power systems for both front-end and load converters.In the case of parallel converter modules the additional current sharing control objective is aimed to keep the load current balance distribution between the modules.In order to construct a paralleling converter system with good performance of equality current distribution and high reliability,a variety of special load current sharing approaches were proposed,developed and analyzed in the past,such as droop,master-slaves,automatic and democratic approaches. Keyword：DC-DC converter parallel operation current sharing droop method master-slaves automatic approach democratic approach share bus
对于DC-DC变换器模块的并联运行，附加均流控制目的是使负载电流在各模块间平衡均匀分配。为了设计一个均流性能优越以及高可靠的DC-DC变换器并联系统，人们已开发和分析了许多方法，如下垂法、主从均流法、自动均流法、民主均流法等。 叙词：DC-DC变换器 并联运行模块 均流 下垂法 主从法 自动均流法 民主均流法 均流母线 Abstract：The paralleling of lower-power DC-DC converter modules offers a number of advantages over a single,high power,centralized power supply.The advantages include higher efficiency,better dynamic response due to a higher frequency of operation,and better load regulation.Paralleling allows for redundancy implementation,expandability of output power and ease of maintenance.Paralleling of standardized DC-DC converter modules is the approach widely used in distributed power systems for both front-end and load converters.In the case of parallel converter modules the additional current sharing control objective is aimed to keep the load current balance distribution between the modules.In order to construct a paralleling converter system with good performance of equality current distribution and high reliability,a variety of special load current sharing approaches were proposed,developed and analyzed in the past,such as droop,master-slaves,automatic and democratic approaches. Keyword：DC-DC converter parallel operation current sharing droop method master-slaves automatic approach democratic approach share bus
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