光伏阵列最大功率点跟踪的动态自适应负载电流最大化技术

2011 IEEE International Conference of Electron Devices and Solid-State Circuits Pub Date : 2011-12-29 DOI:10.1109/EDSSC.2011.6117632

Liang Yin, Xiaobo Wu, Chern-Lin Chen, Li-cheng Cheng

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引用次数: 3

摘要

提出了一种跟踪光伏阵列最大功率点(MPP)的新技术，该技术硬件简单，采用全模拟电路、少传感器、无模拟乘法器。提出了一种动态自适应调制方法，以消除光伏阵列特性变化的不灵活性，其中仅检测转换器的输出电流以进行控制。升压变换器在峰值电流编程DCM条件下通过三环PWM控制进行调节，降低了电磁干扰和开关损耗。系统采用VIS 0.50µm 5V混合模式2P3M工艺设计。仿真结果表明，该系统在稳态和动态状态下均具有良好的跟踪精度和快速响应能力，平均转换效率约为86%，峰值转换效率为92%。

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Dynamically self-adaptive load current maximization technique for maximum power point tracking in photovoltaic arrays

A new technique is presented for tracking the maximum power point (MPP) of PV arrays, whose hardware is highly simple with all analog circuits, less sensors and no analog multipliers. A dynamically self-adaptive modulation for Iref is proposed to eliminate inflexibility over characteristics variations of PV arrays, where only converter's output current is sensed for control purpose. The boost converter is regulated in peak-current-programmed DCM conditions by three-loop PWM control, reducing EMI and switching loss. The system is designed with the VIS 0.50µm 5V mixed mode 2P3M process. Results of simulation verify good tracking precision and fast response in both steady and dynamic states, and conversion efficiency is about 86% averagely, and 92% as peak value.

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2011 IEEE International Conference of Electron Devices and Solid-State Circuits

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