基于PNLMS的太阳能光伏并网系统自适应控制算法

2016 11th International Conference on Industrial and Information Systems (ICIIS) Pub Date : 2016-12-01 DOI:10.1109/ICIINFS.2016.8263021

N. Beniwal, Ikhlaq Hussain, Bhim Singh

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引用次数: 4

摘要

本文将比例归一化最小均方(PNLMS)控制算法与改进的爬坡最大功率点跟踪(MPPT)技术相结合，用于并网太阳能光伏发电系统中电压源变换器(VSC)的开关控制。开发了由光伏阵列、电网、VSC组成的系统的硬件样机，并获得了在PCC (Common Coupling Point)连接的非线性负载和可变日照水平下的测试结果。结果表明，该方法收敛速度快，稳态误差小。此外，对于一个稳定的SPV系统，PNLMS算法的学习率可以很容易地调整。得到的电网电流的总谐波失真(THD)在IEEE-519标准规定的范围内。

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PNLMS based adaptive control algorithm for solar PV grid tied system

In this paper, a proportionate normalized least mean square (PNLMS) based control algorithm with modified hill climbing MPPT (Maximum Power Point Tracking) technique is used to control the switching of a voltage source converter (VSC), in a grid tied solar photovoltaic (PV) system. A hardware prototype is developed for the system constituted by PV array, grid, VSC and the test results are obtained for a nonlinear load connected at PCC (Point of Common Coupling), and variable insolation levels. The obtained results show fast convergence and less steady state error. Moreover, the learning rate of the PNLMS algorithm can be easily tuned for a stable SPV system. The THD (Total Harmonic Distortion) of the grid current obtained is within the limits specified by IEEE-519 standard.

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2016 11th International Conference on Industrial and Information Systems (ICIIS)

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