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JSSC 2023第3期Power Management0.18µm

A Series-Parallel Switched-Photovoltaic DC-DC Converter

一种串联-并联切换光伏DC-DC转换器,通过周期性地将光伏电池并联以平衡电压并在不匹配条件下提取最大功率。
0.18µm CMOS, 峰值收获效率91.3%(50%电流不匹配下)
光伏转换器DC-DC转换器开关电容功率提取效率优化
利用光伏电池的固有电容建立隐式1:n开关电容转换器
无需外部DC-DC转换器即可实现功率提取
在电流不匹配条件下显著提高效率
Abstract
This article introduces a switched-photovoltaic (SPV) DC–DC converter that switches the photovoltaic (PV) cells of a series solar string periodically in parallel to balance their voltages and extract the maximum available power under mismatch conditions. Without any assistance from an external DC–DC converter, the SPV converter exploits the intrinsic capacitance of the PV cells to establish an implicit 1: n switched- capacitor (SC) converter that allows the extra current of the stronger cells in