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Zero-Common-Mode Modulation of ISOP-Based Dual-Active-Bridge Converter With Power Balance

ieee journal OF emerging AND selected topics IN POWER ELECTRONICS 2025年第2期13卷 2372-2384页

作者： Wang, Zhenyu Jiang, Dong Zhao, Xuan Sun, Wei Huazhong Univ Sci & Technol Sch Elect & Elect Engn Wuhan 430074 Peoples R China Cent South Univ Sch Traff & Transportat Engn Changsha 410083 Hunan Peoples R China

Zero-common-mode (ZCM) modulation, utilizing pulse complementation, is an effective technique for mitigating common-mode (CM) electromagnetic interference (EMI) in multi-module systems. However, its strict pulse timing requirements hinder application in input-series output-parallel (ISOP) dual-active-bridge (DAB) converters. The power and voltage balance between modules can lead to unsynchronized pulse timing, and make it challenging to effectively suppress EMI. In this article, a novel ZCM scheme for ISOP-based DAB is proposed. First, the theoretical relationship between pulse timing and CM voltage is derived, proving ZCM with power balance requires symmetric inductors. Further analysis indicates that among the phase shift modulations, extended phase shift (EPS) modulation is the optimal choice. Finally, a comprehensive design process for the control scheme is proposed. The phase shift ratios of EPS are designed based on zero-voltage switching (ZVS) and active harmonic suppression, to further optimize the CM voltage under ZCM. Theoretical and experimental results validate the feasibility and effectiveness of the proposed scheme.

关键词： Modulation Electromagnetic interference Phase modulation Topology Switches Inductors Zero voltage switching Bridge circuits Power system measurements Noise Active harmonic suppression dual-active-bridge (DAB) converter electromagnetic interference (EMI) input-series output-parallel (ISOP) phase shift modulation power balance zero-common-mode (ZCM) modulation zero-voltage switching (ZVS)

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Case Temperature Waveform Similarity-Based Online Aging Monitoring for SiC MOSFETs of Accelerated Power Cycling Tests for DC-SSPCs

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ieee journal OF emerging AND selected topics IN POWER ELECTRONICS 2025年第1期13卷 380-393页

作者： Yu, Bin Shi, Xingjian Zhou, Ze Xiang, Enyao Gao, Hongyi Luo, Haoze Li, Wuhua Nanjing Univ Informat Sci & Technol Coll Automat Nanjing 210044 Peoples R China Southeast Univ Jiangsu Key Lab Smart Grid Technol & Equipment Nanjing 210096 Peoples R China Zhejiang Univ Coll Elect Engn Hangzhou 310058 Peoples R China Yongjiang Lab Ningbo 315202 Peoples R China Zhejiang Univ Coll Elect Engn Hangzhou 310027 Peoples R China Hebei Univ Technol State Key Lab Reliabil & Intelligence Elect Equipm Tianjin 300130 Peoples R China

Online condition monitoring of SiC MOSFETs is essential for improving the reliability of solid-state power controllers (dc-SSPC). Traditional monitoring methods based on electrical parameters require the design of highly precise monitoring circuits and complex control systems, to prevent disruptions to the system's normal operation. This article introduces a nonelectrical, easily measured parameter-the case temperature-as a means of monitoring the aging status of SiC MOSFETs online, using an electrically insulated temperature sensor. Two aging characteristic parameters, meacosk and stdcosk, are proposed based on the improved cosine similarity of the case temperature waveform. These parameters enable effective tracking of overall aging trends of SiC MOSFETs and allow for the detection of severe aging in the bonding wire and the solder layer, without dependence on electrical parameters. This approach enhances the practicality of noninvasive and online monitoring. The effectiveness of the proposed method is validated through experiment results. Ultimately, this conditions monitoring technique supports fault diagnosis and predictive maintenance for dc-SSPCs.

关键词： Aging Silicon carbide MOSFET Temperature measurement Monitoring Temperature sensors circuits Reliability Power electronics Condition monitoring Case temperature condition monitoring cosine similarity SiC MOSFET solid-state power controller (SSPC)

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Embedding the Dynamics of Forced Nonlinear systems in Multistable Memristor circuits

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ieee journal on emerging and selected topics in circuits and systems 2022年第4期12卷 735-749页

作者： Innocenti, Giacomo Tesi, Alberto Di Marco, Mauro Forti, Mauro Univ Florence Dept Informat Engn Florence Italy Univ Siena Dept Informat Engn & Math I-53100 Siena Italy

A well-known feature of memristors is that they makes the circuit dynamics much richer than that generated by classical $RLC$ circuits containing nonlinear resistors. In the case of circuits with ideal memristors, such a multistability property, i.e., the coexistence of many different attractors for a fixed set of parameters, is connected to the fact that the state space is composed of a continuum of invariant manifolds where either convergent or oscillatory and more complex behaviors can be displayed. In this paper we investigate the possibility of designing memristor circuits where known attractors are embedded into the invariant manifolds. We consider a class of forced nonlinear systems containing several systems which are known to display complex dynamics, and we investigate under which conditions the dynamics of any given system of the class can be reproduced by a circuit composed of a two-terminal (one port) element connected to a flux-controlled memristor. It is shown that an input-less circuit is capable to replicate the system attractors generated by varying the constant forcing input, once the parameters of the two-terminal element and the memristor nonlinear characteristic are suitably selected. Indeed, there is a one-one correspondence between the dynamics generated by the nonlinear system for a constant value of the input and that displayed on one of the invariant manifolds of the input-less memristor circuit. Some extensions concerning the case of non-constant forcing terms and the use of charge-controlled memristors are also provided. The results are illustrated via FitzHugh-Nagumo model and Duffing oscillator.

关键词： Analog circuits memristors nonlinear circuits nonlinear dynamical systems systems modeling

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High-Density Planar Integrated Magnetics With Two-Sided Merged Inductor Windings and Integrated Cores for Resonant DC/DC Converter

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ieee journal OF emerging AND selected topics IN POWER ELECTRONICS 2024年第1期12卷 195-207页

作者： Yang, Jinxu Xu, Yuhao Wu, Xinke Muhammad, Faheem Zhejiang Univ Coll Elect Engn Hangzhou 310027 Peoples R China ZJU Hangzhou Global Sci & Technol Innovat Ctr Hangzhou 311215 Zhejiang Peoples R China

Magnetic integration effectively reduces the total magnetic volume for a converter with multiple magnetic components. However, the existing integrated inductor and transformer still face some problems, such as a large core cross-sectional area due to the small effective inductor winding number or low printed-circuits-board (PCB) utilization due to unreasonable winding structure design. A new inductor and transformer integrated magnetic (IM) structure with high PCB utilization and a small core volume for the resonant converter is proposed in this article. The integrated resonant inductor is constructed by both the primary and secondary side windings, which increases not only the effective inductor turn number but also the utilization of the PCB. What is more, the core plates of the inductor and the transformer are integrated to furtherly increase the utilization of the core. The design methodology for the proposed IMs is also given in this article. Finally, the proposed IMs and design methodology are verified on a 2-kW China Power Supply Society (CLLC) prototype. Compared with the discrete magnetic components, the IMs' volume is reduced by about 25% with a similar loss.

关键词： Windings Inductors Magnetics Legged locomotion Transformer cores Transformers Air gaps High frequency high printed-circuits-board (PCB) utilization magnetic integration on-board charger (OBC) resonant converter

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CellularFlow: Memristive circuits of Gyrator Neurons Toward Brain circuits

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ieee journal on emerging and selected topics in circuits and systems 2022年第4期12卷 963-977页

作者： Tanaka, Mamoru Nishio, Yoshifumi Sekiya, Hiroo Bandai, Masaki Tanji, Yuichi Uwate, Yoko Sophia Univ Dept Informat & Commun Sci Tokyo 1028554 Japan Tokushima Univ Dept Elect & Elect Engn Tokushima 7708506 Japan Chiba Univ Grad Sch Engn Chiba 2638522 Japan Kagawa Univ Fac Engn & Design Takamatsu 7600016 Japan

Now is the age of neuromorphic computing that creates brain circuits. The analog and digital circuit theory changes because the values of the basic conductance elements can be made variable by learning. The computer structure changes to in-memory computing technology in cooperation with a von Neumann architecture. In this paper, we propose a gyrator neuron (GN) that enables analog computer operations by nodal equation. The GN is constructed based on memristor elements. The GN executes learning by back propagation processing and association by forward propagation processing.

关键词： Memristors Voltage Neurons Backpropagation Gyrators Mathematical models RLC circuits Neuromorphic computing in-memory computing analog brain circuits memristor variable conductance gyrator neuron Hebb's law crossbar structure current mode

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Guest Editorial: Special Issue on emerging topics of High-Frequency High-Power Density DC-AC Conversion Technologies

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ieee journal OF emerging AND selected topics IN POWER ELECTRONICS 2023年第4期11卷 3611-3612页

作者： Xu, Dianguo Xu, Dehong Harbin Inst Technol Sch Elect Engn & Automat Harbin 150001 Peoples R China Zhejiang Univ Coll Elect Engn Hangzhou Peoples R China

Recently, high-performance inverters are widely adopted in many applications such as photovoltaic (PV) systems, plasma generation, medical imaging, wireless power transfer, electric vehicle, and so on. For these applications, small volume, high power density, and fast response characteristics are greatly expected, to achieve this goal, improving the operating frequency is the fundamental approach. Thus, many high-frequency dc–ac converters with frequencies ranging from hundreds of kilohertz to tens of megahertz are proposed. However, many technical issues still exist, such as high switching loss, narrow output load range, large value and volume of passive components, and so on. Until now, there is still huge room for performance improvement in high-frequency dc–ac conversion technologies. Thus, this Special Issue intends to foster the latest research and demonstrate emerging topics in highfrequency high-power density dc–ac conversion technologies.

关键词： Special issues and sections Photovoltaic systems Inverters Biomedical image processing Density measurement AC-AC converters

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Finite-Time Disturbance Observer of Active Power Filter With Dynamic Terminal Sliding Mode Controller

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ieee journal OF emerging AND selected topics IN POWER ELECTRONICS 2023年第2期11卷 1604-1615页

作者： Fei, Juntao Liu, Lunhaojie Chen, Yun Hohai Univ Coll IoT Engn Jiangsu Key Lab Power Transmiss & Distribut Equip Changzhou 213022 Peoples R China

This article proposes an adaptive dynamic terminal sliding mode control (ADTSMC) based on a finite-time disturbance observer (FTDO) for a single-phase active power filter (APF). Aiming at the internal parameter fluctuations and external unknown disturbances in the APF system, an FTDO is designed to compensate for the unknown uncertainties. Then, the proposed dynamic terminal sliding mode control (DTSMC) method combines the dynamic sliding mode control and the terminal sliding mode control to achieve finite-time convergence and weaken system chattering. In order to ensure the organic combination of FTDO and DTSMC, a dual-hidden-layer recurrent neural network (DHLRNN) is used to estimate the gain of sliding mode switching term adaptively so that FTDO can achieve the maximum disturbance estimation. Hardware experiments verify that the designed ADTSMC method has satisfactory robustness and harmonic compensation property under different nonlinear loads.

关键词： Convergence Switches Harmonic analysis Control systems Switching circuits Sliding mode control Active filters Active power filter (APF) dual-hidden-layer recurrent neural network (DHLRNN) dynamic terminal sliding mode control (DTSMC) finite-time disturbance observer (FTDO)

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An Easy-Implemented Pulsewidth Modulation Method for Vienna Rectifier With Minimized Current Distortion Including Overmodulation Operation

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ieee journal OF emerging AND selected topics IN POWER ELECTRONICS 2024年第3期12卷 2639-2650页

作者： Zhang, Qingyan Jiang, Weidong Hu, Ya Wang, Jinping Hefei Univ Technol Sch Elect Engn & Automat Hefei 230009 Peoples R China

Vienna rectifier is a unidirectional three-level ac-dc converter, which is widely used in many applications. For Vienna rectifier, the current zero crossing distortion (CZCD) is usually occurred because the reference voltage vector cannot be accurately synthesized although in the linear modulation region. Moreover, in the overmodulation region, the reference voltage vector also cannot be accurately synthesized, which results in current distortion. To alleviate current distortion, a modulation method including overmodulation region is proposed for Vienna rectifier in this article. By redividing space vector diagram according to the characteristic of voltage vector synthesis, the corresponding modulation methods suitable for different regions are derived. The criteria and final modulation voltages of each region are obtained only with simple algebraic operation. Besides, active neutral point voltage (NPV) control method is also considered. Finally, the superiority of the proposed modulation method is verified by theoretical analysis and experiments.

关键词： Rectifiers Modulation Vectors Reactive power Phase modulation Capacitors Bridge circuits Current distortion neutral point voltage (NPV) overmodulation Vienna rectifier

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Power Electronic Converters in Inductive Wireless Charging Applications for Electric Transportation

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ieee journal OF emerging AND selected topics IN POWER ELECTRONICS 2025年第2期13卷 2647-2683页

作者： Bharatiraja, C. Mahesh, Aganti Lehman, Bradley SRM Inst Sci & Technol Coll Engn Ctr Elect Mobil CEM Dept Elect & Elect Engn Chennai 603203 India Northeastern Univ Dept Elect & Comp Engn Boston MA 02115 USA

Wireless charging system (WCS) for electric vehicles (EVs) has the potential to revolutionize traditional plug-in charging methods. This technology employs different methods. Among these, resonant inductive power transfer (R-IPT) stands out in EV applications for its high efficiency and lower operating frequencies compared to others. The role of power electronic converters (PECs) in achieving high frequency and resonance operation is vital, with switches and compensators playing crucial roles in resonant converter design. This article emphasizes the significance of PECs, explores the factors influencing converters selection and their classifications, and provides an overview of various PECs at different stages of wireless power transfer (WPT) systems, along with their characteristics. Additionally, it delves into wide bandgap (WBG) devices and different semiconductor switches, discussing their roles in R-IPT systems, as well as their advantages and disadvantages. This article also outlines the characteristics, features, and limitations of various overview compensation topologies, serving as a valuable resource for researchers seeking to develop new topologies for wireless charging applications. A comprehensive discussion on future challenges, development trends, and prospects is provided.

关键词： Coils Batteries Inductive charging Wireless communication Inverters Topology Rectifiers Receivers Transmitters Bridge circuits Electric vehicles (EVs) high-frequency inverter (HFI) inductive power transfer (IPT) resonant topologies wireless power transfer (WPT)

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Voltage Balancing for Triple-Active-Bridge Converter Using Integrated Transformer

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ieee journal OF emerging AND selected topics IN POWER ELECTRONICS 2025年第2期13卷 2027-2035页

作者： Lee, Seunghoon Cha, Honnyong Lee, Dong-Choon Kyungpook Natl Univ Sch Energy Engn Daegu 41566 South Korea Yeungnam Univ Dept Elect Engn Gyongsan 38541 Gyeongsangbuk D South Korea

The bipolar dc distribution has many advantages compared with the unipolar type. The triple-active-bridge (TAB) converter is a popular topology for the implementation of bipolar dc distribution due to its dual-output structure. However, the unbalanced output voltages caused by the asymmetric load condition is a big issue. This article proposes a voltage balancing integrated transformer to achieve the output voltage balancing in the TAB converter without requiring any additional balancer circuits or dedicated control schemes. In this article, the high-frequency transformer and two external inductors in the conventional TAB converter are merged into a single magnetic structure. As a result, the desired voltage balancing is automatically achieved and the power density of magnetic components in the converter can be increased. The voltage balancing performance of the proposed integrated transformer was tested with a 4-kW experimental prototype under severely unbalanced load conditions, and the imbalance of the output voltages is reduced to less than 1.6% where the conventional TAB converter shows 80% unbalanced results. In addition, the power density of magnetic components increased by 35% (7.9-10.7 kW/L) and the total loss of magnetic components is reduced by 19%.

关键词： Transformers Windings Inductors Voltage control Legged locomotion Transformer cores Inductance Magnetic circuits Air gaps Zero voltage switching Bipolar dc grid integrated transformer triple-active-bridge (TAB) converter voltage balancing

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