A New PI Algorithm for Single Stage Three-Phase Grid-Connected Photovoltaic Inverter Based on Power Feed-Forward

2015 Fifth International Conference on Instrumentation and Measurement, Computer, Communication and Control (IMCCC) Pub Date : 2015-09-01 DOI:10.1109/IMCCC.2015.222

Yuepeng Wang, Zhaoyang Yan, Zhe Zhang, Herong Gu, Yanni Gao

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引用次数: 1

Abstract

The single-stage photovoltaic grid-connected system uses only once energy conversion to complete two functions: Maximum power point tracking (MPPT)and grid connected, so it has a large advantage of cost and efficiency. This paper research the Single Stage Three-phase Grid-connected Photovoltaic Inverter. Against the slow response of the DC bus voltage for the control of the traditional double-loop, being not conducive to the quick search of MPPT, this article makes the power feed forward algorithm be applied to the outer ring of the system control, and comparison with the traditional double-loop PI control. In addition, Against the unreasonable of the regulator design and the issues of the Parameters trial, PI regulator parameter design for in-depth research, Through detailed theoretical derivation, we come up with a new design PI regulator approach. The experiment verificates the new design method of PI parameters and the effectiveness of power feed forward control algorithm.

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一种基于功率前馈的单级三相光伏并网逆变器PI算法

单级光伏并网系统仅使用一次能量转换即可完成最大功率点跟踪(MPPT)和并网两项功能，因此具有较大的成本和效率优势。本文对单级三相光伏并网逆变器进行了研究。针对传统双环控制直流母线电压响应慢，不利于MPPT快速搜索的问题，本文将功率前馈算法应用于系统外环控制，并与传统双环PI控制进行比较。此外，针对稳压器设计的不合理和参数试验的问题，对PI稳压器的参数设计进行了深入的研究，通过详细的理论推导，提出了一种新的PI稳压器设计方法。实验验证了PI参数的新设计方法和功率前馈控制算法的有效性。

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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来源期刊

2015 Fifth International Conference on Instrumentation and Measurement, Computer, Communication and Control (IMCCC)

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