Next Article in Journal
Recent Progress and New Perspectives on Metal Amide and Imide Systems for Solid-State Hydrogen Storage
Next Article in Special Issue
Experimental Data-Driven Parameter Identification and State of Charge Estimation for a Li-Ion Battery Equivalent Circuit Model
Previous Article in Journal
Fault Current Limiters in Power Systems: A Comprehensive Review
Previous Article in Special Issue
Exploring the Potential of Camber Control to Improve Vehicles’ Energy Efficiency during Cornering
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle
Energies 2018, 11(5), 1026; https://doi.org/10.3390/en11051026

An Enhanced Hybrid Switching-Frequency Modulation Strategy for Fuel Cell Vehicle Three-Level DC-DC Converters with Quasi-Z Source

1
School of Electrical and Information Engineering, Tianjin University, 92 Weijin Rd, Nankai District, Tianjin 300072, China
2
Changchun Power Supply Company, 4799 Renmin Street, Changchun 130022, China
3
Department of Electrical and Electronic Engineering, University of Nottingham Ningbo China, Ningbo 315100, China
4
Department of Electrical and Electronic Engineering, University of Nottingham, Nottingham NG7 2RD, UK
*
Author to whom correspondence should be addressed.
Received: 28 March 2018 / Revised: 18 April 2018 / Accepted: 19 April 2018 / Published: 24 April 2018
(This article belongs to the Collection Electric and Hybrid Vehicles Collection)
  |  
PDF [4674 KB, uploaded 3 May 2018]
  |  

Abstract

For fuel cell vehicles, the fuel cell stack has a soft output characteristic whereby the output voltage drops quickly with the increasing output current. In order to interface the dynamic low voltage of the fuel cell stack with the required constant high voltage (400 V) of the inverter DC link bus for fuel cell vehicles, an enhanced hybrid switching-frequency modulation strategy that can improve the voltage-gain range is proposed in this paper for the boost three-level DC-DC converter with a quasi-Z source (BTL-qZ) employed in fuel-cell vehicles. The proposed modulation strategy retains the same advantages of the original modulation strategy with more suitable duty cycles [1/3, 2/3) which avoids extreme duty cycles. Finally, the experimental results validate the feasibility of the proposed modulation strategy and the correctness of its operating principles. Therefore, the BTL-qZ converter is beneficial to interface the fuel cell stack and the DC bus for fuel cell vehicles by using the proposed modulation strategy. View Full-Text
Keywords: phase-shifted modulation strategy; wide voltage-gain range; low voltage stress; switching states; flying capacitor phase-shifted modulation strategy; wide voltage-gain range; low voltage stress; switching states; flying capacitor
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

Zhang, Y.; Shi, J.; Fu, C.; Zhang, W.; Wang, P.; Li, J.; Sumner, M. An Enhanced Hybrid Switching-Frequency Modulation Strategy for Fuel Cell Vehicle Three-Level DC-DC Converters with Quasi-Z Source. Energies 2018, 11, 1026.

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