Open AccessNew modelling of photovoltaic power integration system and its control strategy for medium‐voltage DC distribution network
Author(s) -
Chen Jiaxi,
Jiang Daozhuo,
Yin Rui,
Liang Yiqiao
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8160
Subject(s) - photovoltaic system , maximum power point tracking , converters , voltage , computer science , power (physics) , electronic engineering , electrical engineering , engineering , inverter , physics , quantum mechanics
Here, a novel photovoltaic power integration system based on LLC resonant converters is proposed for medium‐voltage DC distribution network, which exhibits a feasible and efficient solution for large‐scale solar energy integrating into DC grids. A control system with the voltage signal generation part and the frequency control part is designed to realise the current and voltage sharing of the sub‐module, while achieving the maximum power point tracking (MPPT) of the PV arrays. To verify the practicability of the system with many switching devices, this paper proposes an optimisation model to accelerate the simulation speed of this system without losing accuracy. Finally, the feasibility of the proposed system is validated by the simulation based on PSCAD/EMTDC.