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Energies
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Optimal Design and Application of High-Performance Power Converters
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Optimal Design and Application of High-Performance Power Converters

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F3: Power Electronics".

Deadline for manuscript submissions: 19 June 2024 | Viewed by 3813

Special Issue Editors

Dr. Shengrong Zhuo

E-Mail Website
Guest Editor
School of Automation, Northwestern Polytechnical University, Xi’an 710072, China
Interests: power converters; hybrid fuel cell power system; robust control strategy; electrified transportation
Dr. Tianhong Wang

E-Mail Website
Guest Editor
School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China
Interests: energy management strategy; fuel cell hybrid power system; hydrogen power generation
Dr. Wenshuai Bai

E-Mail Website
Guest Editor
School of Artificial Intelligence, Beijing Technology and Business University, Beijing 100048, China
Interests: microgrid planning and operation; power system uncertainty analysis and modeling; renewable energy modeling; interaction between electric vehicles and smart grid
Dr. Elena Breaz

E-Mail Website
Guest Editor
FEMTO-ST Institute, University of Technology of Belfort-Montbéliard, 90010 Belfort, France
Interests: fuel cell modeling; electric hybrid vehicle design and real-time simulation technology for energy systems; energy management of hybrid power systems
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Yigeng Huangfu

E-Mail Website
Guest Editor
School of Automation, Northwestern Polytechnical University, Xi’an 710072, China
Interests: new energy power conversion; electrified transportation; internet of energy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The power converter is a key technology and has been increasingly employed not only in traditional industrial applications, but also in numerous innovative areas, including electrical aircraft, electrical ships, electrical vehicles/trains, new energy power generation systems, and data center power delivery, among others. This has contributed to advances in the circuit topology, modeling methods, control systems, optimization design, and test tools of current power converters, which are characterized by high efficiency, high power density, and high reliability. Moreover, these mission-critical and safety-critical applications have pioneered research in the domain of fault diagnosis and fault tolerance, leading to the development of more fault-tolerant power converters.

This Special Issue aims to present and disseminate the most recent advances related to the theory, design, modeling, control, optimization, and application of all types of power converters.

Topics of interest for publication may include, but are not limited to:

  • All aspects of DC/DC, DC/AC, AC/AC, AC/DC power converters
  • Power converters for electrified transportation (aircraft, trains, ships, vehicles, etc.)
  • Power converters for new energy power generation systems
  • Novel applications of power converters (wireless charging system, pulse load system, etc.)
  • Advanced modeling methods for power converters
  • New topology for high-performance power converters
  • Advanced control and energy management strategies for power converter systems
  • Optimal design for cost-effective power converters

Dr. Shengrong Zhuo
Dr. Tianhong Wang
Dr. Wenshuai Bai
Dr. Elena Breaz
Prof. Dr. Yigeng Huangfu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • power converter
  • electrified transportation
  • new energy power generation systems
  • optimal design and control
  • fault-tolerant converters

Published Papers (5 papers)

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Research

18 pages, 6227 KiB  
Article
Quasi-Resonant Converter for Electric Vehicle Charging Applications: Analysis, Design, and Markov Model Use for Reliability Estimation
by Harini Sampath, Chellammal Nallaperumal and Md. Jahangir Hossain
Energies 2024, 17(4), 815; https://doi.org/10.3390/en17040815 - 08 Feb 2024
Viewed by 558
Abstract
This article presents a quasi-resonant converter (QRC) with multiple sources. A QRC has many benefits, such as high gain, constant current, and nominal voltage stress on MOSFET, with an up to 49% duty cycle with fewer switches. These features of the converter make [...] Read more.
This article presents a quasi-resonant converter (QRC) with multiple sources. A QRC has many benefits, such as high gain, constant current, and nominal voltage stress on MOSFET, with an up to 49% duty cycle with fewer switches. These features of the converter make it suitable for electrical vehicle (EV) off-board charging, which requires significant voltage gain. As the switch operates under soft switching condition, the converter has reduced power loss, improved efficiency, and increased reliability. To reduce grid dependency, the suggested QRC is housed with a grid and PV at the input ports. The proposed converter is modeled using mathematical equations and examined using the MATLAB platform under different operating conditions. In this work, analysis of the steady state, along with components design, estimation of the voltage and current stresses, are addressed. Further, the reliability of the QRC based on the probability of components failure is carried out using the Markov model. The hardware results are observed to validate the design, operation, efficiency, and suitability of the proposed QRC for EV off-board charging applications. A 400-watt test rig is designed to assess the performance of QRC. Full article
(This article belongs to the Special Issue Optimal Design and Application of High-Performance Power Converters)
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22 pages, 11521 KiB  
Article
LCL Trap Filter Analysis with a PFC Isolated Ćuk Converter Using SiC MOSFET for DCM
by Erdal Şehirli
Energies 2024, 17(3), 758; https://doi.org/10.3390/en17030758 - 05 Feb 2024
Viewed by 626
Abstract
The main contribution of the paper concerns the use of an LCL trap filter with a PFC isolated Ćuk converter. Further, SiC MOSFET is used with a PFC isolated Ćuk converter designed for 50 W with 42 kHz in DCM. A small-signal model [...] Read more.
The main contribution of the paper concerns the use of an LCL trap filter with a PFC isolated Ćuk converter. Further, SiC MOSFET is used with a PFC isolated Ćuk converter designed for 50 W with 42 kHz in DCM. A small-signal model of the converter is cascaded with the filter model to investigate the effect of the filter on the whole system. Moreover, large-signal and small-signal models of the converter are compared to investigate the requirement of the small-signal analysis. In addition, an LTspice simulation using SiC MOSFET of the system is conducted and the results are compared by the applications for both LC and LCL trap filters with respect to different loading conditions. Further, the LCL trap filter is compared with the LC filter regarding the PF, THD, and efficiency. Controller design considering the filter is also presented. In addition, the converter is operated and compared using linear and nonlinear loads for each filter. Parametric variation in the filter components is investigated. As a result of the simulation and applications, the THD of the grid current is 4.83% and the PF is 0.998, meeting the standards, and the overall efficiency of the system is 85% with the LCL trap filter. It can be concluded that the presented filter provides better results than the LC filter. Full article
(This article belongs to the Special Issue Optimal Design and Application of High-Performance Power Converters)
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15 pages, 5860 KiB  
Article
Efficient Prototyping of a Field-Programmable Gate Array-Based Real-Time Model of a Modular Multilevel Converter
by Wenming Gong, Chaofan Liu, Mingdong Wang and Xiaobing Zhao
Energies 2024, 17(3), 591; https://doi.org/10.3390/en17030591 - 26 Jan 2024
Viewed by 591
Abstract
Field-programmable gate array (FPGA)-based real-time simulation plays a crucial role in testing power–electronic dominated systems with the formation of controller hardware-in-the-loop (CHIL) or power hardware-in-the-loop (PHIL). This work describes an efficient implementation of computation time and resource usage in the FPGA-based study of [...] Read more.
Field-programmable gate array (FPGA)-based real-time simulation plays a crucial role in testing power–electronic dominated systems with the formation of controller hardware-in-the-loop (CHIL) or power hardware-in-the-loop (PHIL). This work describes an efficient implementation of computation time and resource usage in the FPGA-based study of a modular multilevel converter (MMC) with detailed electromagnetic transients. The proposed modeling technique can be used in continuous control mode (CCM) and discontinuous control mode (DCM) for high-switching frequency semiconductor technologies. An FPGA-based designed solver structure is also presented to take advantage of the parallel features of FPGAs to achieve an ultra-fast calculation speed. In addition, two different switch modeling techniques are discussed with a five-level MMC case study. Experimental results on the NI PXIe platform show the feasibility of the proposed implementation, and a time step of 100 nanoseconds is achieved. Full article
(This article belongs to the Special Issue Optimal Design and Application of High-Performance Power Converters)
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23 pages, 13298 KiB  
Article
Universal Input Single-Stage High-Power-Factor LED Driver with Active Low-Frequency Current Ripple Suppressed
by Kuo-Ing Hwu, Jenn-Jong Shieh and Chien-Ting Lin
Energies 2024, 17(1), 183; https://doi.org/10.3390/en17010183 - 28 Dec 2023
Cited by 1 | Viewed by 473
Abstract
In this paper, a light-emitting diode (LED) driver with a high power factor (PF) and low-frequency current ripple suppression over a wide input range is presented, and a flyback converter is designed to operate in the discontinuous conduction mode (DCM), with a digital [...] Read more.
In this paper, a light-emitting diode (LED) driver with a high power factor (PF) and low-frequency current ripple suppression over a wide input range is presented, and a flyback converter is designed to operate in the discontinuous conduction mode (DCM), with a digital controller used to keep the duty cycle constant for half of the utility cycle under a fixed load and input voltage. This method ensures that the input current is in phase with the universal input voltage, thus achieving a high power factor without utilizing feedforward control. Furthermore, on the secondary side, the time of the zero point of the utility voltage can be attained so that the duty cycle can be updated at this time. In addition, a simple auxiliary circuit is connected parallel to the output side to absorb the excess output current of the flyback converter or to release the current to the load to make up for the shortage of the output current of the flyback converter so that the low-frequency ripple of the output current can be inhibited. There are only two current-detecting resistors used in this study: one is the output current-sensing resistor of the flyback converter, and the other is the output current-sensing resistor of the auxiliary circuit. Full article
(This article belongs to the Special Issue Optimal Design and Application of High-Performance Power Converters)
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34 pages, 21817 KiB  
Article
A Control Design Technology of Isolated Bidirectional LLC Resonant Converter for Energy Storage System in DC Microgrid Applications
by You-Kun Tai and Kuo-Ing Hwu
Energies 2023, 16(19), 6877; https://doi.org/10.3390/en16196877 - 29 Sep 2023
Viewed by 1055
Abstract
This paper presents a new control method for a bidirectional DC–DC LLC resonant topology converter. The proposed converter can be applied to power the conversion between an energy storage system and a DC bus in a DC microgrid or bidirectional power flow conversion [...] Read more.
This paper presents a new control method for a bidirectional DC–DC LLC resonant topology converter. The proposed converter can be applied to power the conversion between an energy storage system and a DC bus in a DC microgrid or bidirectional power flow conversion between vehicle-to-grid (V2G) behavior and grid-to-vehicle (G2V) behavior. Furthermore, such a converter can be applied to energy storage systems for decentralized renewable energy generation systems, such as solar and wind power. In addition, this converter can be combined with a bidirectional inverter to allow energy storage in the system to improve the safety, stability, and power quality of the microgrid. In the proposed circuit structure, we use a bidirectional DC–DC LLC, which has the advantages of a higher voltage conversion ratio, lower part count, simpler control than similar converters such as DAB, CLLC, and L–LLC converters, and bidirectional power flow and electrical isolation. Specifically, to extend the battery life, it can be employed as a control strategy for discharging the energy stored in the battery (SOC) and reducing the temperature rise generated by the internal solid electrolyte interphase (SEI) when discharging the battery under the variation in distributed energy resource (DER) generation and load demand. To realize the bidirectional power conversion without using any auxiliary inductor and only changing the control strategy, the forward step-down power conversion was based on pulse frequency modulation (PFM) control, and the reverse step-up power conversion was based on pulse width modulation (PWM) control. In this paper, we introduce the bidirectional converter topology and its control strategy for the DC microgrid battery energy storage system. Finally, a 500 W prototype is built to verify the effectiveness of the proposed converter. Full article
(This article belongs to the Special Issue Optimal Design and Application of High-Performance Power Converters)
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