20V高压能量收集电路与ACC/CV模式和MPPT控制的5w太阳能电池板

2020 2nd International Conference on Smart Power & Internet Energy Systems (SPIES) Pub Date : 2020-09-15 DOI:10.1109/SPIES48661.2020.9243091

Tzung-Je Lee, Po-Kai Su, Chua-Chin Wang

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引用次数: 4

摘要

针对20v / 5w太阳能电池板，提出了一种ACC/CV模式和MPPT控制的高压能量收集电路。考虑到锂离子电池的CC/CV充电过程和太阳能电池板最大功率点的变化，采用PWM和MPPT控制的自适应恒流(ACC)模式，在光源不强、电池电量不足的情况下提高效率。当电池充满电时，使用恒压(CV)模式来防止对锂离子电池的损坏。本设计采用台积电0.5 um特高压工艺实现。仿真结果表明，该电路在0.1 A ~ 0.3 A光电流范围内的跟踪效率可达98%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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20V HV Energy Harvesting Circuit with ACC/CV Mode and MPPT Control for a 5 W Solar Panel

A HV energy harvesting circuit with ACC/CV mode and MPPT control is proposed for a 20 V/5 W solar panel. By considering the CC/CV charging process of the Liion battery and the changing maximum power point of the solar panel, the adaptive constant current (ACC) mode with PWM and MPPT control is utilized to improving the efficiency when the light source is not strong and the battery is not full. While the battery reaches full-charged, the constant voltage (CV) mode is used to prevent the damage to the Li-ion battery. The proposed design is implemented using TSMC 0.5 um UHV process. Based on the simulation results, the circuit achieves the tracking efficiency of 98% for the photocurrent from 0.1 A to 0.3 A.

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2020 2nd International Conference on Smart Power & Internet Energy Systems (SPIES)

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