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Electronics
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Modeling, Control, and Optimization of Power Electronics
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Modeling, Control, and Optimization of Power Electronics

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Power Electronics".

Deadline for manuscript submissions: closed (30 June 2022) | Viewed by 18099

Special Issue Editors

Prof. Dr. Ayan Mallik

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Guest Editor
Power Electronics and Control Engineering Laboratory, The Polytechnic School (TPS), Arizona State University, Tempe, AZ 85281, USA
Interests: design, modeling, control and optimization of power electronic converters; characterizations and applications of wide bandgap (WBG) semiconductors; highly efficient and high-power density solutions for power conversions in the applications of more electric aircrafts; electric vehicles; wireless charging and data centers
Special Issues, Collections and Topics in MDPI journals
Dr. Irfan Ahmad Khan

E-Mail Website
Guest Editor
Clean and Resilient Energy Systems (CARES) Lab, Electrical and Computer Engineering Department, Texas A & M University, Galveston, TX 77553, USA
Interests: energy storage systems; smart grids; V2G
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Power electronics has emerged as an enabling technology in the deployment of the next generation of systems, including transportation systems, motor drives, robotics, biomedical applications, renewable energies, smart grids, and data centers, among many others. The demand for higher efficiency, enhanced reliability, higher power density, specific power, and better thermal management poses stringent challenges for these power electronic converters to accommodate. The advent of wide bandgap (WBG) power semiconductors resulted in a paradigm shift of power electronics design through enabling high-temperature, high-density power conversion with improved efficiency. However, employing fast switching devices leads to higher dv/dt and di/dt at the switch nodes and drain/source paths, respectively, which poses great challenges in ensuring safe operation of the switching circuits, especially at an elevated temperature during steady state operation. This results in noise modeling and high-density optimized EMI filter design being areas of immense interest for WBG power electronics. Furthermore, any power electronic system design deals with two spaces: (i) design space, i.e., passive component parameters, (ii) performance space, i.e., efficiency, power density, cost, reliability, etc. It is very well observed from research that performance indices often follow trade-offs among each other for different combinations of design variables. In order to meet superior performance requirements from the designers’ end, the system design boils down to a multi-objective optimization problem for a given set of electro-thermo-mechanical constraints, which can potentially be tackled using genetic algorithm- and machine learning-based optimization methods. The optimization methods can be applied in (a) converter control with fast transient response along with stiff regulation, (b) design of magnetic components (inductors/transformers) as well as magnetic coil for wireless power transfer, (c) volume minimization of passive components along with reliability maximization.

The main aim of this Special Issue is to seek high-quality submissions that highlight emerging applications of high-density power converters, address recent fundamental breakthroughs in topological development as well as control of power electronics, multi-objective constrained design optimization of power converters, and reliable and cyber-resilient power electronics technologies. The topics of interest include, but are not limited to:

  • Multi-objective design optimization (based on machine learning/statistical learning/artificial intelligence) of power converter systems
  • EMI noise modeling and high-density filter design methodologies
  • Non-linear/optimal control schemes for transient performance improvement of power converters
  • WBG device characterization for high-frequency power electronics
  • High-temperature (>200oC) power electronics
  • Power electronics for transportation electrification and data centers

Dr. Ayan Mallik
Dr. Irfan Ahmad Khan
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. Electronics 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 2400 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

  • High-density power electronics
  • Wide bandgap semiconductor
  • EMI filtering
  • High-frequency power conversion
  • Machine learning and artificial intelligence-based power electronics optimization
  • Transportation and data centers

Published Papers (6 papers)

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Research

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19 pages, 15539 KiB  
Article
Large-Signal Stabilization Method for Islanded DC Microgrids Considering Battery and Supercapacitor Hybrid Energy Storage Systems
by Xinbo Liu, Yongbing Suo, Xiaotong Song, Jinghua Zhou and Yaxin Qu
Electronics 2022, 11(18), 2823; https://doi.org/10.3390/electronics11182823 - 07 Sep 2022
Cited by 1 | Viewed by 1368
Abstract
Islanded DC microgrids composed of distributed generators (DGs), constant power loads (CPLs), parallel converters, batteries and supercapacitors (SCs) are typical nonlinear systems, and guaranteeing large-signal stability is a key issue. In this paper, the nonlinear model of a DC microgrid with a hybrid [...] Read more.
Islanded DC microgrids composed of distributed generators (DGs), constant power loads (CPLs), parallel converters, batteries and supercapacitors (SCs) are typical nonlinear systems, and guaranteeing large-signal stability is a key issue. In this paper, the nonlinear model of a DC microgrid with a hybrid energy storage system (HESS) is established, and large-signal stability criteria are obtained. The HESS consists of batteries and SCs. The derived criteria reveal the influences of the filter parameters, CPL power, DG power and the proportional control parameters of the battery converter and the SC converter on the system large-signal stability. Furthermore, important large-signal stabilization methods for regulating the HESS converter’s control parameters can easily achieve the large-signal stabilization of islanded DC microgrids without extra equipment. The paper is summarized as follows: First, the topology of and control strategy for a DC microgrid with an HESS and CPLs are proposed. Then, according to the characteristics of the HESS, the DGs and the CPLs, the system is equivalently simplified. Finally, the nonlinear model and large-signal stability criteria are both derived using the mixed potential theory, and a large-signal stabilization design method for the HESS converter’s control parameters is proposed. The experimental and simulation results show the effectiveness of the proposed large-signal stabilization method. Full article
(This article belongs to the Special Issue Modeling, Control, and Optimization of Power Electronics)
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10 pages, 5419 KiB  
Communication
A Simplified Hard-Switching Loss Model for Fast-Switching Three-Level T-Type SiC Bridge-Legs
by Davide Cittanti, Cristoph Gammeter, Jonas Huber, Radu Bojoi and Johann W. Kolar
Electronics 2022, 11(11), 1686; https://doi.org/10.3390/electronics11111686 - 25 May 2022
Cited by 5 | Viewed by 2668
Abstract
Hard-switching losses in three-level T-type (3LTT) bridge-legs cannot be directly estimated from datasheet energy loss curves, which are given for symmetric two-level half-bridge configurations only. The commutations in a 3LTT bridge-leg occur between semiconductors with different blocking voltages and/or current ratings, and involve [...] Read more.
Hard-switching losses in three-level T-type (3LTT) bridge-legs cannot be directly estimated from datasheet energy loss curves, which are given for symmetric two-level half-bridge configurations only. The commutations in a 3LTT bridge-leg occur between semiconductors with different blocking voltages and/or current ratings, and involve a third semiconductor device in the switching transition, which contributes additional capacitive losses. This paper, therefore, describes a simplifed approach to estimate a lower bound for the hard-switching losses of 3LTT bridge-legs (note that the approach is applicable to other three-level topolgies as well). In view of the very fast switching speeds of wide-bandgap semiconductors, the model neglects voltage/current overlap losses and considers only the dominating charge-related loss contributions (semiconductor output capacitances, body diode reverse-recovery charge), thus requiring minimal information from datasheets. A direct experimental verification with an 800 V DC-link 3LTT bridge-leg (1200 V and 650 V SiC MOSFETs) operating with output currents up to 25 A confirms the good accuracy of the simplified switching-loss model. Full article
(This article belongs to the Special Issue Modeling, Control, and Optimization of Power Electronics)
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14 pages, 27589 KiB  
Article
An Eleven-Level Switched-Capacitor Inverter with Boosting Capability
by Md Reyaz Hussan, Adil Sarwar, Irfan Khan, Mohd Tariq, Mohammad Tayyab and Waleed Alhosaini
Electronics 2021, 10(18), 2262; https://doi.org/10.3390/electronics10182262 - 15 Sep 2021
Cited by 14 | Viewed by 2505
Abstract
An 11-level switched-capacitor multilevel inverter (SCMLI) with 2.5 times boosting feature is presented in this paper. It can produce an 11-level output voltage waveform by utilizing 14 switches, 3 capacitors, 2 diodes, and 1 DC source. Only nine driver circuits are needed as [...] Read more.
An 11-level switched-capacitor multilevel inverter (SCMLI) with 2.5 times boosting feature is presented in this paper. It can produce an 11-level output voltage waveform by utilizing 14 switches, 3 capacitors, 2 diodes, and 1 DC source. Only nine driver circuits are needed as the topology has three pairs of complementary switches and two bidirectional switches. It has inherent capacitor self-balancing property as the capacitors are connected across the DC voltage source during several states within a fundamental cycle to charge the capacitors to the input voltage. A detailed comparison shows the effectiveness of the proposed topology in terms of the number of switches, number of capacitors, number of sources, total standing voltage (TSV), efficiency, and boosting ability with the state-of-art recently proposed circuits. Subsequently, the performance of the proposed SCMLI is validated experimentally utilizing the nearest level control (NLC), a fundamental frequency-based switching technique. Full article
(This article belongs to the Special Issue Modeling, Control, and Optimization of Power Electronics)
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15 pages, 3299 KiB  
Article
A Comprehensive Review of EMI Filter Network Architectures: Synthesis, Optimization and Comparison
by Saikat Dey and Ayan Mallik
Electronics 2021, 10(16), 1919; https://doi.org/10.3390/electronics10161919 - 10 Aug 2021
Cited by 9 | Viewed by 3223
Abstract
This paper presents a volumetric comparison among three possible optimized three phase EMI filter structures, a three phase PFC converter used in cutting edge applications, such as avionics, space or shipboard power systems. The size minimization of each of the filter structures, described [...] Read more.
This paper presents a volumetric comparison among three possible optimized three phase EMI filter structures, a three phase PFC converter used in cutting edge applications, such as avionics, space or shipboard power systems. The size minimization of each of the filter structures, described in the paper, was performed utilizing the volumetric optimization methodology proposed in the paper. This paper theoretically demonstrates the design steps for choosing the appropriate filter component values and number of filter stages to achieve the smallest volume of the DM filter stage for any given EMI filter structure. While the validation of the proposed design methodology was done through a MATLAB simulation, an experimental verification was also performed by designing and comparing the optimized EMI filter structures for a 2.3 kW proof-of-concept of a three-phase boost PFC converter for more electric aircraft (MEA) applications to comply with the stringent EMI requirements of the DO-160F standard. Full article
(This article belongs to the Special Issue Modeling, Control, and Optimization of Power Electronics)
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13 pages, 5795 KiB  
Article
Scalable Multiport Converter Structure for Easy Grid Integration of Alternate Energy Sources for Generation of Isolated Voltage Sources for MMC
by Syed Rahman, Irfan Khan, Khaliqur Rahman, Sattam Al Otaibi, Hend I. Alkhammash and Atif Iqbal
Electronics 2021, 10(15), 1779; https://doi.org/10.3390/electronics10151779 - 25 Jul 2021
Cited by 4 | Viewed by 1777
Abstract
This paper presents a novel, scalable, and modular multiport power electronic topology for the integration of multiple resources. This converter is not only scalable in terms of the integration of multiple renewable energy resources (RES) and storage devices (SDs) but is also scalable [...] Read more.
This paper presents a novel, scalable, and modular multiport power electronic topology for the integration of multiple resources. This converter is not only scalable in terms of the integration of multiple renewable energy resources (RES) and storage devices (SDs) but is also scalable in terms of output ports. Multiple dc outputs of a converter are designed to serve as input to the stacking modules (SMs) of the modular multilevel converter (MMC). The proposed multiport converter is bidirectional in nature and superior in terms of functionality in a way that a modular universal converter is responsible for the integration of multiple RES/SDs and regulates multiple dc output ports for SMs of MMC. All input ports can be easily integrated (and controlled), and output ports also can be controlled independently in response to any load variations. An isolated active half-bridge converter with multiple secondaries acts as a central hub for power processing with multiple renewable energy resources that are integrated at the primary side. To verify the proposed converter, a detailed design of the converter-based system is presented along with the proposed control algorithm for managing power on the individual component level. Additionally, different modes of power management (emulating the availability/variability of renewable energy sources (RES)) are exhibited and analyzed here. Finally, detailed simulation results are presented in detail for the validation of the proposed concepts and design process. Full article
(This article belongs to the Special Issue Modeling, Control, and Optimization of Power Electronics)
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Review

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15 pages, 4345 KiB  
Review
A Comparison Review on Transmission Mode for Onshore Integration of Offshore Wind Farms: HVDC or HVAC
by Syed Rahman, Irfan Khan, Hend I. Alkhammash and Muhammad Faisal Nadeem
Electronics 2021, 10(12), 1489; https://doi.org/10.3390/electronics10121489 - 20 Jun 2021
Cited by 24 | Viewed by 4477
Abstract
The development of offshore wind farms (WF) is inevitable as they have exceptional resistance against climate change and produce clean energy without hazardous wastes. The offshore WF usually has a bigger generation capacity with less environmental impacts, and it is more reliable too [...] Read more.
The development of offshore wind farms (WF) is inevitable as they have exceptional resistance against climate change and produce clean energy without hazardous wastes. The offshore WF usually has a bigger generation capacity with less environmental impacts, and it is more reliable too due to stronger and consistent sea winds. The early offshore WF installations are located near the shore, whereas most modern installations are located far away from shore, generating higher power. This paradigm shift has forced the researchers and industry personnel to look deeper into transmission options, namely, high voltage AC transmission (HVAC) and high voltage DC transmission (HVDC). This evaluation can be both in terms of power carrying capability as well as cost comparisons. Additionally, different performance requirements such as power rating, onshore grid requirements, reactive power compensation, etc., must be considered for evaluation. This paper elaborately reviews and explains the offshore wind farm structure and performance requirements for bulk offshore power transfer. Based on the structure and performance requirements, both HVDC and HVAC transmission modes are compared and analyzed critically. Finally, a criterion for selection and increasing popularity of HVDC transmission is established. Full article
(This article belongs to the Special Issue Modeling, Control, and Optimization of Power Electronics)
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