电力系统保护与控制2024，Vol.52Issue(1)：44-58,15.DOI:10.19783/j.cnki.pspc.230486
一种单输入双输出高增益DC-DC变换器
A single input dual output high step-up DC-DC converter
摘要
Abstract
Distributed generation(DG)has been widely used in low and medium-voltage applications.The need for high step-up DC-DC converters continues to increase.A novel single input dual output(SIMO)high step-up DC-DC converter is proposed.This converter adds a capacitor and diode to form a polarity reverse pole based on the traditional Boost circuit,and the power ports are interconnected through differential connection,improving the voltage gain of the converter and reducing the voltage stress of the switch.At the same time,port power control is independent,further improving the flexibility of power routing.The circuit structure and working principle of the converter are analyzed in detail,and expressions for voltage gain,electrical stress of main switching devices,and current ripple in steady-state are derived.Then,a vector-based time model predictive control strategy is proposed,a predictive model of the converter is established,the vector time of the switch is derived,and the optimization process of the objective function is designed.Finally,the feasibility of the proposed converter and the effectiveness of the control strategy are verified through simulation and experiment.The higher efficiency and lower voltage stress of semiconductors are also verified.关键词
分布式发电/高增益/差分结构/低电流纹波/模型预测控制Key words
distributed generation/high step-up/differential connection/low current ripple/model predictive control引用本文复制引用
汪诚,张善路,张佳琪,张浩东,华红婷,李磊..一种单输入双输出高增益DC-DC变换器[J].电力系统保护与控制,2024,52(1):44-58,15.基金项目
江苏省自然科学基金项目资助(BK20190461) This work is supported by the Natural Science Foundation of Jiangsu Province(No.BK20190461). （BK20190461）
