A High-Voltage CMOS IC and Embedded System for Distributed Photovoltaic Energy Optimization with Over 99% Effective Conversion Efficiency and Insertion Loss Below 0.1%

📋 论文概要

本文提出了一种用于分布式光伏能量优化的高压CMOS集成电路和嵌入式系统，解决了传统中央逆变器在PV模块失配时能量损失的问题，实现了超过99%的有效转换效率。

💡 主要创新点

• 提出了分布式光伏能量优化架构，通过每模块级DC-DC转换器独立调节功率，避免串联电流限制。
• 设计了高压CMOS IC，集成功率管、控制器和通信接口，实现高效率和低成本。
• 嵌入式系统实现了MPPT和通信功能，能适应多种PV模块配置。

🏷 关键词

📄 原文摘要

Solar Semiconductor, Sunnyvale, CA 1 2 Solar photovoltaic (PV) energy has increased in importance in recent years as a viable alternative to carbon-producing sources of energy. In an effort to drive PV energy towards grid parity, there is a need to improve the power electronics and architecture for grid-connected systems [1-3]. Traditional PV systems use a central inverter to manage multiple strings of series-connected PV modules [3]. With mismatch among the PV cells, the energy production of the array suffers in several ways: 1) in series strings, current is limited to the lowest-performing cell in the string, 2) if current is forced to exceed this level, external bypass diodes need to turn on throwing away power available in the string and incurring conductive losses, 3) with bypass diodes on, total string voltage may deviate from maximum power voltage (Vmpp), reducing energy production of all modules in the string.

👥 作者与机构

Jason Stauth1,2, Michael Seeman2, Kapil Kesarwani2

Dartmouth College, Hanover, NH