Title
Efficiency Optimization of DC Solid-State Transformer for Photovoltaic Power Systems
Abstract
As the “brain” of the modern photovoltaic power systems, dc solid-state transformers (SSTs) are playing an increasing important role in integrating different photovoltaic modules, batteries, and supercapacitors. This paper aims at improving the conversion efficiency of dc SST for a wide operating range by minimizing the backflow power of the dc SST system. First, the mathematical model of the backflow power from both input and output sides of dc SST is obtained. Then, the penalty function is derived and an enhanced triple phase shift control (ETPS) strategy is proposed to minimize the backflow power for various transmission power and voltage conversion conditions. A comprehensive comparison of the proposed ETPS with other advanced control strategies was carried out through theoretical analysis and experimental tests. Main experimental results are illustrated to verify the effectiveness of the proposed method.
Year
DOI
Venue
2020
10.1109/TIE.2019.2914620
IEEE Transactions on Industrial Electronics
Keywords
Field
DocType
Bridge circuits,Power generation,Inductors,Voltage control,Topology,Optimization,Batteries
Energy conversion efficiency,Automotive engineering,Backflow,Supercapacitor,Control theory,Voltage,Electric power system,Input/output,Engineering,Photovoltaic system,Penalty method
Journal
Volume
Issue
ISSN
67
5
0278-0046
Citations 
PageRank 
References 
0
0.34
0
Authors
5
Name
Order
Citations
PageRank
Haochen Shi110.70
Huiqing Wen21711.10
Yihua Hu384.28
Yong Yang42818.77
Yiwang Wang521.45