Next Article in Journal
Modeling of a District Heating System and Optimal Heat-Power Flow
Next Article in Special Issue
An Enhanced Control Scheme Based on New Adaptive Filters for Cascaded NPC/H-Bridge System
Previous Article in Journal
Experimental and Numerical Simulation of the Heat Transfer Enhancement on the Twin Impingement Jet Mechanism
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessFeature PaperArticle
Energies 2018, 11(4), 928; https://doi.org/10.3390/en11040928

A DAB Converter with Common-Point-Connected Winding Transformers Suitable for a Single-Phase 5-Level SST System

1
Department of Electrical Engineering, Pusan National University, Busan 46241, Korea
2
Power Conversion and Control Research Center, HVDC Research Division, KERI, Changwon 51543, Korea
*
Author to whom correspondence should be addressed.
Received: 21 March 2018 / Revised: 10 April 2018 / Accepted: 11 April 2018 / Published: 13 April 2018
(This article belongs to the Special Issue Power Electronics 2018)
Full-Text   |   PDF [8828 KB, uploaded 3 May 2018]   |  

Abstract

One of the main disadvantages of the multi-level solid-state transformer (SST) system is the voltage imbalance on the output of the rectifier modules. This voltage imbalance can be caused by parameter mismatch of the active and passive components, different loads, and the floating structure of the high voltage DC-links. Some studies have been done to solve this voltage imbalance problem. A common way to avoid this imbalance is to balance the voltage of DC-links at the AC/DC conversion stage and balance the power between the modules at the DC/DC conversion stage. Most of these methods require a complex balancing controller or additional circuits. This paper proposes a novel dual active bridge (DAB) converter specialized in power balancing in a single-phase 5-level SST system. The proposed DAB converter does not require any additional balancing controllers or techniques for power balancing. The performance of the proposed DAB converter was verified by simulation and experiments using a 3 kW 5-level SST prototype system. View Full-Text
Keywords: cascaded H-bridge; dual active bridge; solid-state transformer; power balancing cascaded H-bridge; dual active bridge; solid-state transformer; power balancing
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Yun, H.-J.; Kim, H.-S.; Kim, M.; Baek, J.-W.; Kim, H.-J. A DAB Converter with Common-Point-Connected Winding Transformers Suitable for a Single-Phase 5-Level SST System. Energies 2018, 11, 928.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top