GaN-Based Multi-Active-Bridge Converter with Hot-Swapping Capability

Title

GaN-Based Multi-Active-Bridge Converter with Hot-Swapping Capability

 Author

Wang, Shumeng (TU Delft Electrical Engineering, Mathematics and Computer Science)

Contributor

Qin, Z. (mentor) ORCID 0000-0002-7408-7706
Bauer, P. (mentor) ORCID 0000-0002-1171-9972
Manganiello, P. (graduation committee) ORCID 0000-0002-4752-0068

 Degree granting institution

Delft University of Technology

 Programme

Electrical Engineering

 Date

2022-08-25

 Abstract

This thesis addresses a novel configuration of hot-swappable Multi-Active-Bridge (MAB) DC/DC converter in renewable-energy-based systems. As an extension of the Dual-Active-Bridge (DAB) converter, the MAB converter provides a multiport DC/DC converter solution with bidirectional power flow, simple phase shift control and galvanic isolation, but leaves problems in coupling operation, low availability and control complexity. In this thesis, the MAB converter with hot-swapping capability is proposed and studied. With a dedicated transformer design and circuit re-configuration, the converter allows a single port rigidly determines the voltage on the magnetizing inductance of the transformer, while the power flow of all other ports are naturally decoupled. The decoupled ports of this proposed MAB converter shows high independence in control and operation, thus can be hot-swappable and decentralized controlled. The hot-swapping interface circuit consisting of Negative-Temperature-Coefficient (NTC) and Metal-Oxide-Varistor (MOV) is proposed, and the benchmark of components selection is elaborated. The control of hot-swappable ports is implemented with a decentralized voltage loop and a SYNC module for phase shift control synchronization. A 2.2kW, 200kHz, two 350V, two 48V, four-port GaN-based MAB converter is simulated and tested for evaluation of decoupled operation, hot-swapping and decentralized control. Finally the hardware is designed and to be implemented for further and extended evaluation of hot-swappable MAB converter.

 Subject

Dual Active Bridge
Multi Active Bridge
Hot Swapping Converter
GaN HEMT
Planar Transformer

 To reference this document use:

http://resolver.tudelft.nl/uuid:8e1780f4-90c8-40ad-bb7e-c6e5e4ff0a5e

 Part of collection

Student theses

 Document type

master thesis

 Rights

© 2022 Shumeng Wang
Files
PDF MSc_Thesis_Shumeng_Wang.pdf 18.5 MB
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