← 返回 JSSC 论文列表JSSC 2025第3期Power Management0.18µm CMOS
A Series-Parallel Switched-Photovoltaic DC–DC Converter
提出一种串联-并联切换光伏DC-DC转换器，通过周期性地将光伏电池并联平衡电压，提升不匹配条件下的最大功率提取效率。
峰值采集效率91.3%（50%电流不匹配）
光伏DC-DC转换器串联-并联切换电压平衡最大功率提取开关电容转换
▸利用光伏电池固有电容实现1:n开关电容转换
▸无需外部DC-DC转换器辅助
▸提升不匹配条件下的功率提取效率
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 the string to flow around the underperforming cells to the output, instead of getting shunted to the ground. Fabricated in a 0.18 µm CMOS process, the SPV converter achieves a peak harvesting efficiency of 91.3% under 50% current mismatch among the employed PV cells, demonstrating 30.2% efficiency improvement over the prior solutions.