New Insight in Power Electronics of Topology, Control, and Application System

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

Deadline for manuscript submissions: 15 August 2024 | Viewed by 3117

Special Issue Editors


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Guest Editor
School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China
Interests: multi-level converter; single-phase converter; digital signal processing with applications to power electronic converters using fpga; modeling and simulation of power electronic systems

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Guest Editor
College of Automation, Northwestern Polytechnical University, Xi’an, 710072, China
Interests: inverter-dominated power system analysis and control

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Guest Editor
School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
Interests: networked control system; interconnected cyber-physical systems; nonlinear system

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Guest Editor
School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China
Interests: power electronics and energy conversion including modeling, control, and various applications (portable electronics and renewable power systems)

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Guest Editor
School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China
Interests: high-efficiency/highpower density power converters; wireless power transfer system; MHz power supply module with wide bandgap devices; and power supply for Aeronautics; and astronautics applications.

Special Issue Information

Dear Colleagues,

Due to a continuous increase in demand for energy—thus an increase in concern over the environment—developing high-efficiency, clean and reliable energy and power systems has become a new trend. Recent advances in power electronics have brought a rapid development in power systems, including renewable energy generation, traction power supply, microgrids, energy storage and battery electric vehicles. Due to the variation in power generations’ integration and complex load application, the penetration of power electronics into the generation, transmission and distribution areas has far more impact on system operation, control and stability. In modern power systems, power converters play a significant role in achieving electric power transmission and an improvement in power quality. To obtain a high-efficiency, high-quality, low-cost and steady electric power supply, the topology, analysis and control strategy of the power converter, as well as the stability theories of the related system, need more development.

This Special Issue is devoted to the topology, analysis, control and stability of power converters and electronic power systems. Prospective authors are invited to submit original contributions and survey papers in these areas. Papers dealing with real-world problems and practical applications of advanced modeling, analysis and control techniques are particularly encouraged.

The topics of main interest include but are not limited to:

  • Novel converters’ topology, modulation and optimal control.
  • Multi-connected or multi-level converters.
  • LLC and DAB DC-DC converters’ topology and control.
  • Grid-connected DC/AC and PFC topology and the optimal control strategy.
  • Power converters in smart grid, DC grid, HV-DC, traction power supply system, motor control and drive.
  • Power converts in WPT, energy storage, PV and EV.
  • SiC and GaN devices, drivers and applications.
  • Power electronics’ supply system stability analysis and optimal control strategy.

Prof. Dr. Zeliang Shu
Prof. Dr. Yuhua Du
Dr. Meng Li
Dr. Jin Sha
Dr. Hongbo Ma
Guest Editors

Manuscript Submission Information

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Keywords

  • power electronics
  • AC-DC converter
  • DC-DC converter
  • multi-level converter
  • topology and control
  • power electronics’ supply system.

Published Papers (3 papers)

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Research

22 pages, 7321 KiB  
Article
A Novel Impedance Matching of Class DE Inverter for High Efficiency, Wide Impedance WPT System
by Ping Wang, Qian Li, Yanming Liu, Wei Yuan, Kui Yan and Zixu Pang
Electronics 2024, 13(5), 959; https://doi.org/10.3390/electronics13050959 - 1 Mar 2024
Cited by 1 | Viewed by 678
Abstract
In high-frequency wireless power transfer (WPT) applications, Class D, E, and F inverters are most widely used. Class DE inverters combine the respective advantages of Class D and Class E inverters. However, the Class DE inverter is sensitive to changes in impedance, which [...] Read more.
In high-frequency wireless power transfer (WPT) applications, Class D, E, and F inverters are most widely used. Class DE inverters combine the respective advantages of Class D and Class E inverters. However, the Class DE inverter is sensitive to changes in impedance, which can easily lead to the loss of soft switching characteristics, thereby reducing efficiency. In this paper, an impedance-matching compensation design method is proposed to expand the high-efficiency region of the Class DE inverter by matching impedance and parameters. The effect of the method on the zero-voltage switching (ZVS) characteristic of Class DE inverters is analyzed in detail. The proposed WPT system maintains a constant voltage and zero phase angle by employing PS/PS compensation topology. Theoretical analysis shows that the impedance can be compressed for the design of resonant network impedance, and the method can expand the high-efficiency region with a reasonable choice of parameters to match the phase. Finally, a 500 kHz, 1 kW WPT prototype was constructed with a coupling factor of 0.25–0.4 and a load range of 30–80 Ω. The inverter’s efficiency exceeds 95%, with optimal efficiency reaching 97.3%. The system efficiency is greater than 87%. Full article
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15 pages, 5977 KiB  
Article
Noise Reduction Method for the Vibration Signal of Reactor CRDM Based on CEEMDAACN-SK
by Zhilong Liu, Tongxi Li, Zhifeng Zhu, Minggang Li, Changhua Nie and Zhangchun Tang
Electronics 2023, 12(22), 4681; https://doi.org/10.3390/electronics12224681 - 17 Nov 2023
Viewed by 749
Abstract
The reactor control rod drive mechanism (CRDM) controls the startup, shutdown and power of the reactor; it is one of the key pieces of equipment to ensure the normal operation of the reactor. CRDM is complex, mainly composed of stator, rotor, bearing, roller, [...] Read more.
The reactor control rod drive mechanism (CRDM) controls the startup, shutdown and power of the reactor; it is one of the key pieces of equipment to ensure the normal operation of the reactor. CRDM is complex, mainly composed of stator, rotor, bearing, roller, etc. The characteristic analysis of the vibration monitoring signal is one of the important methods of the CRDM state evaluation. In view of the characteristics of large noise interference and the difficulty in analyzing the vibration monitoring signal of CRDM, this paper proposes a noise reduction method for the vibration signal of CRDM based on complete ensemble empirical mode decomposition with adaptive amplitude correction noise and spectral kurtosis (CEEMDAACN-SK), which can deeply reduce the vibration signal of CRDM. Firstly, the proposed CEEMDAACN algorithm is used to decompose the vibration signal of CRDM to obtain multiple intrinsic mode functions (IMF). Then, the spectral kurtosis of each IMF component is analyzed to obtain the spectral kurtosis map of each IMF component, which is compared with the spectral kurtosis map of the original signal. Finally, the denoising reconstruction of the signal is carried out to obtain the final denoising signal. Through experimental analysis, the performance of the proposed CEEMDAACN-SK denoising algorithm is better than the complete ensemble empirical mode decomposition with adaptive noise and spectral kurtosis (CEEMDAN-SK) algorithm in terms of results. The method proposed in this paper can be applied not only to the vibration signal noise reduction of CRDM, but also to other equipment and fields, such as nuclear power main circulation pump and the chemical industry. Full article
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22 pages, 11306 KiB  
Article
A Hybrid Quasi-Single-Stage AC-DC Converter with Low Twice-Line-Frequency Output Voltage Ripple
by Tiesheng Yan, Chu Wang, Shuhan Zhou, Hao Wen and Guohua Zhou
Electronics 2023, 12(21), 4440; https://doi.org/10.3390/electronics12214440 - 28 Oct 2023
Viewed by 1101
Abstract
Power factor correction (PFC) converters have been frequently employed in various switching power supply devices to reduce input current harmonics. However, the PFC converter suffers from an obvious twice-line-frequency output voltage ripple due to the instantaneous power imbalance between constant output power and [...] Read more.
Power factor correction (PFC) converters have been frequently employed in various switching power supply devices to reduce input current harmonics. However, the PFC converter suffers from an obvious twice-line-frequency output voltage ripple due to the instantaneous power imbalance between constant output power and variable input power. Suppression of twice-line-frequency ripple usually can be realized by the post-stage DC-DC converter of the two-stage cascade PFC converter; however, the two-stage cascade PFC structure is challenging to realize high efficiency since the energy is transferred twice. To achieve high power factor, high efficiency, and low twice-line-frequency ripple, a hybrid quasi-single-stage (QSS) AC-DC converter is presented in this paper, which consists of a dual output hybrid Boost/Flyback PFC converter and a Buck ripple compensation circuit (RCC). The fundamental principles of the proposed converter and the critical conditions of operation mode transition are discussed in the paper. To confirm that the twice-line-frequency ripple is effectively suppressed, the small signal model of Buck RCC is built and analyzed. Moreover, the main characteristics, including operation mode transition angle, input current, power factor, and switching frequency of the proposed hybrid QSS AC-DC converter, are analyzed. By building a 120 W experimental prototype to validate the feasibility of the proposed hybrid QSS AC-DC converter, the experimental results show that the proposed converter can realize PFC function with high efficiency and extremely low twice-line-frequency output voltage ripple. Full article
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