Voltage Balance Control Based Aalborg Inverter with Single Source in Photovoltaic System

Shuai Zhang, Weimin Wu, Houqing Wang, Yuanbin He, Henry Shu-Hung Chung, Frede Blaabjerg

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1 Citationer (Scopus)

Abstrakt

The Aalborg inverter was proposed in recent years, where it has a lot of advantages. For example, its input voltage can be varied in a wide range, the minimum voltage drop on filtering inductors can be realized, the minimum switching power losses can be achieved, and therefore the efficiency of the inverter is high. However, it’s in essence a “half-bridge” inverter using two input sources. Note that in practical PV applications, the output voltage of each PV array is not always the same. For a conventional Aalborg inverter, to maintain the current to be injected into the power grid without DC component, part of input DC energies may have to be discarded, which will reduce the efficiency of whole system. In this paper, the circuit configuration of modified Aalborg inverter with single source and its voltage balance control method are presented. Different from the conventional Aalborg inverter, this configuration can avoid the situation of the energy unbalance of two input DC sources and has higher maximum power point tracking efficiency, in addition to its already excited advantages. An 800W/110V/50Hz prototype has been built to verify the feasibility of the proposed inverter together with the new control strategy.
OriginalsprogEngelsk
TitelProceedings of the IEEE International Power Electronics and Application Conference and Exposition (PEAC 2018)
Antal sider4
UdgivelsesstedChina
ForlagIEEE Press
Publikationsdatonov. 2018
Sider1-4
ISBN (Trykt)978-1-5386-6055-3
ISBN (Elektronisk)978-1-5386-6054-6
DOI
StatusUdgivet - nov. 2018
Begivenhed2nd IEEE Power Electronics and Applications Conference and Exposition - Shenzhen, Kina
Varighed: 4 nov. 20187 nov. 2018
Konferencens nummer: 2nd
http://www.peac-conf.org/

Konference

Konference2nd IEEE Power Electronics and Applications Conference and Exposition
Nummer2nd
LandKina
ByShenzhen
Periode04/11/201807/11/2018
Internetadresse

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