30kW一体式微网光伏储能逆变器拓扑运用研究

Research on Topology of 30kW Integrated Microgrid Photovoltaic Energy Storage Inverter

随着社会的发展,对电力的需求逐步增加,能源危机、环境污染、智能电网建设以及可再生能源发电建设滞后等因素之间的矛盾,催生出一个新的电力电子解决方案与产品——微网储能系统。微网储能系统通常与光伏结合,是目前比较成熟、可靠、方便的系统解决方案,其中,微网光伏储能逆变器作为关键组成部分,其光伏DC/DC变换器、电池DC/DC变换器、双向并离网DC/AC逆变器的拓扑结构的选择决定系统功能参数与可靠性。通过分析各种拓扑结构优劣势,根据实际需求,选择一套最优化的拓扑结构方案,以此作为类似产品规划设计借鉴。

With the development of society,the demand for electric power is increasing gradually,but the contradiction between energy crisis,environmental pollution,smart grid construction,renewable energy power generation and other lagging construction has led to the emergence of a new power electronic solutions and products:micro-grid energy storage system.Microgrid energy storage system is usually combined with photovoltaic,which is a mature,reliable and convenient system solution.Microgrid photovoltaic energy storage inverter is the key component of the system.The choice of topology structure of photovoltaic DC/DC converter,battery DC/DC converter and bidirectional parallel off-grid DC/AC inverter determines the system function parameters,system performance and Reliability.In this paper,we analyze the advantages and disadvantages of various topological structures,and finally choose an optimal topological structure scheme according to actual needs.This analysis and solution can be used as reference for similar product planning and design.