Affiliation:
1. Center of Energy Science and Technology Skolkovo Institute of Science and Technology Moscow Russia
2. Electric Vehicle Group CEIT San Sebastian Spain
Abstract
AbstractIsolated multiple port DC/DC converters, such as the Multiple Active Bridge (MAB) converter, have many recent applications, such as interconnection between grids, isolated uninterruptible power sources (UPSs) and electric vehicle chargers. MAB converter is an attractive solution from the point of view of the hardware because of its symmetry and its capability to be extended to any number of bridges with a moderate number of components. However, the main challenge of this converter is the control method in order to achieve independent control between the different ports and to minimize recirculating currents. For that reason, three‐port power converters have been already investigated, but many improvements can be done for a larger number of ports. This paper proposes to use a Fourier decomposition for the main power signals to separate their real and imaginary parts. As the signals work at the switching frequency, this decomposition is developed with analog electronics. Based on that, a general control method for regulating the power at the different ports is presented using the first harmonic component, which delivers most of the power. In this proposal, two nested control loops ensure accuracy for the DC power flow. Simulation and experimental results validate the proposal.
Publisher
Institution of Engineering and Technology (IET)
Subject
Electrical and Electronic Engineering
Reference21 articles.
1. Topological review of hybrid RES based multi‐port converters
2. Review of Multiport Converters for Solar and Energy Storage Integration
3. Benefit analysis of using multi‐port and multi‐function power electronic transformer connecting hybrid AC/DC power grids
4. Zhao C. Kolar J.W.:A novel three‐phase three‐port UPS employing a single high‐frequency isolation transformer. In:2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551) vol.6 pp.4135–4141(2004)
5. Di Napoli A. Crescimbini F. Rodo S. Solero L.:Multiple input DC‐DC power converter for fuel‐cell powered hybrid vehicles. In:2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289) Cairns QLD Australia vol.4 pp.1685–1690(2002)