An RMS Current Minimization Method for Three-Level ANPC-DAB-Based Distributed Energy Storage System With Full Operation ZVS

Distributed energy storage system has been developed rapidly with the rising employment of sustainable energy sources. In order to withstand higher voltage, achieve larger capacity, and increase control flexibility, a three-level active neutral-point-clamped dual active bridge (ANPC-DAB) converter i...

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Bibliographic Details
Published in:IEEE journal of emerging and selected topics in power electronics 2024, Vol.12 (3), p.2388-2405
Main Authors: Tian, Jiachen, Zhuo, Chaoran, Wang, Feng, Deng, Haotian
Format: Article
Language:English
Subjects:
Active control
Alternative energy
Conduction losses
Control systems
DC-DC power converters
Distributed resources
Electric bridges
Electric converters
Electric potential
electric vehicle (EV)
Energy resources
Energy sources
Energy storage
energy storage system
large capacity applications
Modulation
Optimization
Phase modulation
Switching
Topology
Voltage
Zero voltage switching
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Summary:Distributed energy storage system has been developed rapidly with the rising employment of sustainable energy sources. In order to withstand higher voltage, achieve larger capacity, and increase control flexibility, a three-level active neutral-point-clamped dual active bridge (ANPC-DAB) converter is employed for the interface between energy sources and energy storage ports. In order to achieve efficient power transmission inside the ANPC-DAB converter, both root-mean-square (rms) current and zero-voltage-switching (ZVS) range are taken into consideration for further optimization. On the one hand, using fmincon function in MATLAB with multiple nonlinear restrictions, optimal rms current can be obtained to realize minimum conduction loss. On the other hand, to reduce switching loss, several typical modes are chosen to realize the ZVS of all switches inside the entire power range. Compared with existing modulations in a three-level DAB converter, the efficiency promotion strategy proposed in this article can achieve the lowest rms current and widest ZVS range. Eventually, an ANPC-DAB prototype is established and the effectiveness and correctness of the proposed method can be proved.
ISSN:2168-6777
2168-6785
DOI:10.1109/JESTPE.2024.3373594