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Electronics
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Advanced Control Techniques of Power Electronics
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Advanced Control Techniques 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 (15 April 2024) | Viewed by 7997

Special Issue Editors

Prof. Dr. Mihai Cernat

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Guest Editor
Department of Electrical Engineering, Universitatea Transilvania din Brașov, Brasov, Romania
Interests: electrical machines and drives; electrical power networks
Prof. Dr. Dan Florentin Lascu

E-Mail Website
Co-Guest Editor
Facility of Telecommunications and Information Technology, Polytechnic University of Timisoara, 300006 Timisoara, Romania
Interests: converter synthesis; power factor correction; power quality; modeling in power electronics; resonant converters; soft switching

Special Issue Information

Dear Colleagues,

For many years, the development of electronics has been continuously accelerating, and its adoption and all-around use have taken on entirely new dimensions. Undoubtedly, with the further use of electronics in improving safety, independence, health protection, quality of life, industry, and science, in every aspect of human life; issues related to power electronics are of key importance. Power electronics have a direct impact on the energy supplied to power all other devices, as well as its quality, reliability, and availability of energy. The world learned the importance of energy independence and, above all, obtaining energy from different sources—energy diversification. Scientific research on obtaining energy from renewable sources is significantly accelerating, the results of which are becoming increasingly important, both for countries but also for individual people. As responsible researchers, we must ensure that communities have a chance to meet the CO2 emission targets, which additionally affects the value of power electronics development. Reliability of power systems, high efficiency, low maintenance costs, and reliable operation in various conditions have become a very important issue. This will promote the breaking down of further barriers to technological progress and, at the same time, improve the energy efficiency of designed devices. In this Special Issue, we would like to cover topics that are important for power electronics-based systems, energy conversion, energy harvesting and recovery, improving energy utilization, and other energy-related aspects. Examples of the topics include:    

  • Energy efficiency in power electronic systems;   
  • Modern control systems of power electronic systems;   
  • Reliability of power electronic systems;   
  • High-efficiency power electronic system topologies;   
  • Modeling and simulation of power electronic systems;   
  • Renewable energy systems;   
  • Thermal management and cooling technologies;   
  • Minimizing power consumption;   
  • Microgrids, smart grids, and distributed generation systems;   
  • Design power electronic systems for improving availability, maintainability, and safety;   
  • New materials used in power electronics systems;   
  • Electromagnetic compatibility in power electronic systems;   
  • Modern methods of power electronic system design;   
  • Artificial intelligence in power electronics;   
  • Energy storage;   
  • Automotive charger. 

Prof. Dr. Mihai Cernat
Prof. Dr. Dan Florentin Lascu
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

  • power electronic systems
  • energy storage
  • energy efficiency

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Published Papers (5 papers)

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Research

12 pages, 5283 KiB  
Communication
Realization of Unity Power Factor Wireless Power Transfer System under Subnormal Operation Conditions
by Liyong Zhang, Pengyu Zhang, Wenwu Li and Zhonghao He
Electronics 2023, 12(19), 4009; https://doi.org/10.3390/electronics12194009 - 23 Sep 2023
Viewed by 1133
Abstract
The power factor of wireless power transfer system, determined by its compensation network part, is easily affected by parameter detuning, coil misalignment, and load variation. In this paper, a mathematical model for the compensation network part is established. Theoretical analysis shows that the [...] Read more.
The power factor of wireless power transfer system, determined by its compensation network part, is easily affected by parameter detuning, coil misalignment, and load variation. In this paper, a mathematical model for the compensation network part is established. Theoretical analysis shows that the inverter part can be considered as a negative resistor by deducing the inherent static-state frequency solution of the compensation network part. Therefore, the unity power factor wireless power transfer system can be maintained under any possible operation conditions by tracking the inherent static-state frequency solution. More importantly, no digital controller or parameter identification or information interactions between the primary and secondary coils are needed during the tracking process. Compared with previous unity power factor realization methods, the proposed tracking strategy has the advantages of fewer sampling variables, a faster response time, and a simpler regulation process. Finally, an experimental platform is built to test the practical performance of the proposed tracking strategy under many subnormal operation conditions. Our experimental results show that approximate unity power factor can be realized at 10–15 cm coil misalignment distance and 30–90 Ω load variation range. Full article
(This article belongs to the Special Issue Advanced Control Techniques of Power Electronics)
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17 pages, 5460 KiB  
Article
An Objective Holographic Feedback Linearization Based on a Sliding Mode Control for a Buck Converter with a Constant Power Load
by Jiyong Li, Benquan Pi, Pengcheng Zhou, Jingwen Li, Hao Dong and Peiwen Chen
Electronics 2023, 12(18), 3976; https://doi.org/10.3390/electronics12183976 - 21 Sep 2023
Viewed by 1038
Abstract
As a typical load, the constant power load (CPL) has negative impedance characteristics. The stability of the buck converter system with a mixed load of CPL and resistive load is affected by the size of the CPL. When the resistive load is larger [...] Read more.
As a typical load, the constant power load (CPL) has negative impedance characteristics. The stability of the buck converter system with a mixed load of CPL and resistive load is affected by the size of the CPL. When the resistive load is larger than the CPL, the buck converter with the output voltage as an output function is a non-minimum phase nonlinear system, because its linear approximation has a right-half-plane pole. The non-minimum phase characteristic limits the application of many control techniques, but the objective holographic feedback linearization control (OHFLC) method is a good control strategy that can bypass the non-minimum phase system and make the system stable. However, the traditional OHFLC method, in designing the controller, generally uses a linear optimal quadratic design method to obtain a linear feedback control law. It requires a state quantity component with a one-order relative degree to the system. But it is not easy to find such a suitable state quantity with a one-order relative degree to the system. In this paper, an improved OHFLC method is proposed for Buck converters with a mixed loads of CPL and resistive loads, using the sliding mode control (SMC) theory to design the controller, so that the output state quantity components with different relative degrees to the system can be used in the holographic feedback linearization method. Finally, the simulation and experimental results also demonstrate that this method has the same, or even better, dynamic response performance and robustness than the traditional OHFLC method. Full article
(This article belongs to the Special Issue Advanced Control Techniques of Power Electronics)
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16 pages, 2614 KiB  
Article
Two-Axis Optoelectronic Stabilized Platform Based on Active Disturbance Rejection Controller with LuGre Friction Model
by Xueyan Hu, Shunjie Han, Yangyang Liu and Heran Wang
Electronics 2023, 12(5), 1261; https://doi.org/10.3390/electronics12051261 - 6 Mar 2023
Cited by 6 | Viewed by 1927
Abstract
To realize the stable tracking control of the optoelectronic stabilized platform system under nonlinear friction and external disturbance, an active disturbance rejection controller (ADRC) with friction compensation is proposed to improve the target tracking ability and anti-disturbance performance. First, a nonlinear LuGre observer [...] Read more.
To realize the stable tracking control of the optoelectronic stabilized platform system under nonlinear friction and external disturbance, an active disturbance rejection controller (ADRC) with friction compensation is proposed to improve the target tracking ability and anti-disturbance performance. First, a nonlinear LuGre observer is designed to estimate friction behavior and preliminarily suppress the interference of friction torque on the system. Then, an ADRC is introduced to further suppress the residual disturbance after friction compensation, and the stability of the ADRC system is also proved. The effectiveness of this scheme is proved by simulation experiments, and this scheme is compared with conventional ADRC and LuGre friction feedforward compensation. The simulation results show that an ADRC with LuGre friction compensation is better with trajectory tracking performance, which suppresses the influence of disturbance and improves the stability of the optoelectronic stabilized platform system. Full article
(This article belongs to the Special Issue Advanced Control Techniques of Power Electronics)
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12 pages, 4081 KiB  
Communication
A Fractional-Order Multi-Rate Repetitive Controller for Single-Phase Grid-Connected Inverters
by Qiangsong Zhao, Kaiyue Liu and Hengyi Li
Electronics 2023, 12(4), 1021; https://doi.org/10.3390/electronics12041021 - 18 Feb 2023
Cited by 2 | Viewed by 1270
Abstract
The multi-rate repetitive controller (MRC) can achieve zero steady-state error in tracking the reference current signal of grid-connected inverters, save the settling time effectively, and improve the running speed. However, when the grid frequency fluctuates, the harmonic suppression performance of MRC will degrade. [...] Read more.
The multi-rate repetitive controller (MRC) can achieve zero steady-state error in tracking the reference current signal of grid-connected inverters, save the settling time effectively, and improve the running speed. However, when the grid frequency fluctuates, the harmonic suppression performance of MRC will degrade. Aiming at the problem of harmonic suppression performance degradation, a fractional-order MRC (FOMRC) based on the farrow structure fractional delay (FD) filter is proposed. Firstly, the equivalent digital model of MRC is established, and a Farrow structure fractional delay (FD) filter based on Taylor series expansion is selected as the internal model filter of MRC. The stability analysis and harmonic suppression characteristics of the FOMRC are analyzed. Then, the parameter design of FOMRC applied to an LCL single-phase grid-connected inverter control system is given. Finally, the simulation results show that the proposed method has better transient and steady-state performance than the CRC when the grid frequency fluctuates. Full article
(This article belongs to the Special Issue Advanced Control Techniques of Power Electronics)
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19 pages, 14785 KiB  
Article
SRFPI-LADRC Based Control Strategy for Off-Grid Single-Phase Inverter: Design, Analysis, and Verification
by Liaoyuan Lin, Haoda Li, Kai Zhu and Lingling Shi
Electronics 2023, 12(4), 962; https://doi.org/10.3390/electronics12040962 - 15 Feb 2023
Viewed by 1890
Abstract
Linear active disturbance rejection control (LADRC) has been extensively used in various areas due to its excellent disturbance suppression capability. When LADRC is applied to a single-phase inverter for tracking a sinusoidal reference signal, there is an inherent tracking inaccuracy problem. The steady-state [...] Read more.
Linear active disturbance rejection control (LADRC) has been extensively used in various areas due to its excellent disturbance suppression capability. When LADRC is applied to a single-phase inverter for tracking a sinusoidal reference signal, there is an inherent tracking inaccuracy problem. The steady-state error can be removed with the synchronous reference frame proportional-integral (SRFPI) control, which generates two orthogonal signals. In this paper, a modified control method based on compound SRFPI and LADRC for an off-grid single-phase inverter is put forward, where both output signals of SRFPI are employed as the reference signals of LADRC. Furthermore, a selective harmonic compensation method is performed by paralleling multiple SRFPI controllers to further reduce the selective harmonic components. Detailed theoretical analyses including system stability, robustness, performance of voltage tracking error and disturbance rejection are presented, which indicate that this organic combination fuses the merits of both SRFPI and LADRC without complicating the control design. Additionally, contrast experiments are conducted to demonstrate its effectiveness and superiority. These findings demonstrate that the system realizes a slight voltage tracking error and steady-state error, rapid dynamic response, and low total harmonic distortion (THD), especially under highly nonlinear load conditions. Full article
(This article belongs to the Special Issue Advanced Control Techniques of Power Electronics)
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