Optimal control of a multilevel DC-link converter photovoltaic system for maximum power generation

RENEWABLE ENERGY

卷:92

Article

Abdalla, I.¹  Corda, J.¹  Zhang, L.¹ 

[1] Univ Leeds, Sch Elect & Elect Engn, Leeds LS2 9JT, W Yorkshire, England

关键词: Multilevel converters;    MPPT;    Partial shading;    Photovoltaic panels;   

DOI  :  10.1016/j.renene.2016.01.062

来源: Elsevier

【 摘 要 】

This paper describes a new algorithm for optimal control of a PV system under partial shading. A multilevel DC-link is the essential part of the proposed system and its control engages a voltage-hold perturbation and observation (VH-P&O) method combined with a PWM algorithm with permutation of PV sources. The algorithm enables achieving the maximum power generation for any number of PV and converter modules. The main features of the control are: (i) a continual operation of all PV sources, shaded and non-shaded, at their maximum power points, (ii) delivery of all extracted power from PV sources to the load and (iii) generation of multilevel output voltage waveform with a low total harmonic distortion. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

Free