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A Self-Adaptive Time-Based MPPT With 96.2% Tracking Efficiency and a Wide Tracking Range of 10 A to 1 mA for IoT Applications

机译:物联网应用具有96.2%的跟踪效率和10A至1mA的宽跟踪范围的自适应基于时间的MPPT

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摘要

This paper presents a novel ultra-low power maximum power point tracking (MPPT) technique with a wide tracking range. An indirect, non-interrupting approach using a novel timing-based algorithm is proposed. The proposed MPPT technique is self-adaptive and applicable to the various types of photovoltaic cells without external reconfiguration or the change of passive components. In addition, a variable gain is employed in the one-hot barrel shift register to reduce the transient response time. A test chip was fabricated in 65-nm CMOS technology. The test chip can harvest energy with the input voltage range of 0.4 V to 1.7 V and the step response time of less than 100 ms at the minimum supply voltage of 0.8 V. The tracking efficiency is up to 96.2% when supplied by a photovoltaic micro-cell array using an irradiation range of 200 lux to 1000 lux.
机译:本文提出了一种具有宽跟踪范围的新颖超低功率最大功率点跟踪(MPPT)技术。提出了一种使用基于时序的新颖算法的间接,不间断的方法。提出的MPPT技术是自适应的,可应用于各种类型的光伏电池,而无需外部重新配置或更改无源组件。此外,在单热桶式移位寄存器中采用了可变增益,以减少瞬态响应时间。测试芯片采用65纳米CMOS技术制造。该测试芯片可以在0.4 V至1.7 V的输入电压范围内采集能量,并且在0.8 V的最小电源电压下的阶跃响应时间小于100 ms。当由光伏微型电源供电时,跟踪效率高达96.2% -细胞阵列使用200 lux至1000 lux的照射范围。

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