@inproceedings{3baa740f6f4d462cb9330eec221cf213,
title = "Independent control strategy of two DC-link voltages for separate MPPTs in transformerless photovoltaic systems using neutral-point-clamped inverters",
abstract = "To improve the efficiency of the photovoltaic (PV) system, the centralized topology using three-level inverters are widely used. In this system, PV modules are separately connected to the split DC-links. This causes a decrease of maximum power point tracking (MPPT) efficiency under the partial shading condition. This paper proposes an independent control of two DC-link voltages for separate MPPT of each PV module in three-level inverters. The proposed method is simply implemented by adding or subtracting the time-offset to the three-phase turn-on times and modifying the reference voltages without complex calculations or any additional hardware. Simulations and experimental results verify the validity and feasibility of the proposed methods.",
author = "Choi, \{Ui Min\} and Frede Blaabjerg and Lee, \{Kyo Beum\}",
year = "2014",
doi = "10.1109/APEC.2014.6803537",
language = "English",
isbn = "9781479923250",
series = "Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "1718--1724",
booktitle = "APEC 2014 - 29th Annual IEEE Applied Power Electronics Conference and Exposition",
note = "29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014 ; Conference date: 16-03-2014 Through 20-03-2014",
}
