一种输入电流连续的新型高增益DC-DC升压变换器

高增益DC-DC变换器正越来越多地应用于太阳能光伏或其他可再生能源发电系统.良好的稳态和动态性能以及更高的效率,是为上述应用选取变换器的先决条件.为此,提出一种高增益DC-DC升压变换器.首先,详细阐述了该新型变换器的拓扑结构与工作原理,在此基础上,对其电路参数进行了设计.然后,将所提变换器与最近提出的其他类似变换器在...

A novel high gain DC-DC boost converter with continuous input current

High gain DC-DC converters are increasingly being used in solar PV and other renewable generation systems. Satisfactory steady-state and dynamic performance, along with higher efficiency, is a prerequisite for selecting a converter for these applications. This paper proposes a high gain DC-DC boost converter. First, the circuit topology and the working principle are discussed in detail. The circuit parameters are designed. Then, the proposed converter is compared with other similar recently proposed converters on various performance parameters. Finally, a system simulation model is established by Matlab software, and the experimental prototype is developed. The simulation and experimental results verify the correctness of the theoretical analysis. The proposed converter only uses one power switch, which has continuous input current and can reduce the voltage stress between switching devices. The working range of duty cycle is wider, and higher voltage gain can be obtained at lower duty cycle. Continuous input current is an ideal characteristic of a DC-DC converter. This makes it very suitable for solar photovoltaic applications. This work is supported by the National Natural Science Foundation of China (No. 61702182).