摘要
在独立新能源发电系统中,采用三端口变换器具有效率高、功率密度高、可靠性高和体积成本低等优点。文中提出一种新型三端口变换器(TPC),应用于独立可再生能源发电系统,且具有高电压增益。该三端口变换器只使用3个开关来实现功率流控制,双输入源共用一个电感,因此,可以减小体积。此外,该变换器的转化率也高于其他三端口变换器。给出了该三端口变换器的工作原理、稳态分析和控制方法。为了验证理论分析的可行性,实现了以光伏电源电压24 V、电池端口电压48 V和一个输出电压400 V为原型的仿真。验证了理论分析的正确性和可控制策略的有效性。
In stand-alone renewable power system, using three-port converters has some advantages such as high efficiency, high power density, high reliability and low cost. In this paper, a novel three port converter （TPC） is proposed, which is applied to a stand-alone renewable power system with high voltage gain. This converter uses only three switches to realize power flow control, and two input sources share one inductor. Thus, the volume will be reduced. Besides, the conversion rate of the converter is also higher than that of the other three port converters. In this paper, the operation principle, steady state analysis and control method of the three port converter are presented. In order to verify the feasibility of the theoretical analysis, a prototype of the the converter with a low input voltage 24 V for photovoltaie source, a battery port voltage 48 V, and an output voltage 400 V is implemented.
出处
《微型机与应用》
2017年第13期38-41,共4页
Microcomputer & Its Applications
基金
国家自然科学资助基金(51107057)
关键词
三端口
直直变换器
拓扑
独立新能源发电系统
three-port
dc-dc converter
topology
stand-alone renewable power system
