Article
Chemistry, Physical
Pankaj Solanki, Mayur Vala, Dhananjay Dhruv, Sandip V. Bhatt, Bharat Kataria
Summary: This study describes the synthesis and electrical transport properties of GdMnO3/Al-doped ZnO and GdMnO3/ZnO heterostructures grown by vacuum deposition. The structures of the samples are confirmed by XRD and the surface topography is analyzed using AFM. The electrical properties and resistive switching behavior are investigated through Hall measurements and current-voltage characteristics. Raman spectroscopy is used to study the vibrational modes of the MnO6 octahedra. The results provide insight into the conduction mechanisms and resistive switching behavior of these heterostructures.
SURFACES AND INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Bin Hao, Yixuan Yang, Xinling Tang, Zhibin Zhao
Summary: This letter focuses on the accurate simulation of the turn-OFF current for high-voltage and high-power IGBT devices and proposes a modeling method of transient analysis model (TAM) based on the nondual relationship of the switching process. By analyzing the carrier storage effect and correcting the analytical expression of di/dt during the turn-OFF process, the accuracy of the nondual modeling method is greatly improved compared to the existing dual modeling methods.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Chuan Sun, Xingyue Jiang, Lingling Cao, K. H. Loo
Summary: The traditional transient phase-shift modulation strategy for DABSRC can lead to large-amplitude transient oscillations, affecting output voltage quality and dynamic performance. To address this issue, a trajectory-switching modulation (TSM) strategy is proposed to ensure rapid convergence to the next new steady state, while reducing the need for costly sensors and complex computations.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Fabio Inocencio Kravetz, Roger Gules
Summary: This study proposed a simple and efficient soft-switching structure for different configurations of the modified SEPIC converter, which can reduce losses and improve efficiency, providing a solution for high power density applications.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Gabriele Ulissi, Jakub Kucka, Umamaheswara Reddy Vemulapati, Thomas Stiasny, Drazen Dujic
Summary: This article explores the tradeoffs in the transition between zero-voltage and zero-current switching conditions of reverse conducting IGCTs in order to achieve minimal switching loss. The results demonstrate that IGCTs have good thermal performance in medium frequency applications under specific switching conditions.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Shuhei Fukunaga, Hajime Takayama, Takashi Hikihara
Summary: This paper presents an experimental validation of a fully digitalized active gate driver for suppressing the switching surge voltage of SiC MOSFETs in a boost converter. The driver shapes the output gate-source voltage waveform by a multi-bit gate control signal, achieving dynamic control of the voltage/current behavior of the MOSFET in the switching transient. The experimental results demonstrate the effectiveness of the digital active gate driver in suppressing the switching surge voltage in various operating conditions.
IET POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Yueshi Guan, Yi Cheng, Tingting Yao, Yijie Wang, Wei Wang, Dianguo Xu
Summary: This article proposes a high-performance modified Y-source dc-dc converter that achieves soft switching characteristics and improved voltage gain. By utilizing one coupled inductor winding and constructing a resonant cell with switch parasitic capacitor, the converter enables zero voltage switching (ZVS) for the switch and zero current switching for the diodes. The control strategy of hybrid pulsewidth modulation and pulse frequency modulation (PFM) ensures ZVS operation within a wide range.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Zhen Xin, Xinyu Liu, Xuebao Li, Jianlong Kang
Summary: Accurate measurement of switching voltage is crucial for evaluating the dynamic behavior of power devices. However, the interference signal easily affects the measurement accuracy of the electric field probe (EFP). This article proposes a high noise-immune structure for EFP to measure the switching voltage of SiC MOSFETs.
IEEE SENSORS JOURNAL
(2023)
Article
Automation & Control Systems
Zhixing Yan, Jun Zeng, Zhiyu Guo, Renjun Hu, Junfeng Liu
Summary: This article proposes an interleaved soft-switching bidirectional dc-dc converter (BDC) for battery charging/discharging applications. By integrating a built-in transformer (BT) into conventional half-bridge BDC and three-level structure, the converter achieves high VCR and reduced voltage stresses. The BT features balanced magnetic flux and small size of the magnetic core, allowing for reduced current ripple and voltage-matching through interleaved structure and duty cycle adjustment.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Automation & Control Systems
Xinping Ding, Fenglian Wang, Mingzhu Zhou, Yichang Cao, Zhengyi Wei
Summary: This article proposes a high-voltage gain soft switching quasi-Z-source dc-dc converter that achieves high efficiency conversion, low input current ripple, and other advantages. The performance of the proposed converter is verified through experiments, which are found to be consistent with the theoretical analysis results.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Green & Sustainable Science & Technology
Sae Hyuk Lee, Sumin Cho, Sunmin Jang, Donghan Lee, Dongik Kam, Jun Hyuk Choi, Zahid Hanif, Moonwoo La, Sung Jea Park, Dongwhi Choi
Summary: This study reports a fully self-powered portable electrospray system (SPES) based on a triboelectric generator (TEG) and a voltage multiplier circuit (VMC). The integration of TEG and VMC allows for easy spraying without the need for external power sources or fixed wiring. By harvesting biomechanical energy, the system can generate sufficiently high voltage (6.0-8.0 kV) for various applications such as agriculture and air sterilization technology.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Felipe L. Probst, Michael Beltle, Malte Gerber, Stefan Tenbohlen, Kai A. Alsdorf
Summary: This paper presents a case study of measuring switching transient overvoltages using a capacitive electric field sensor. After the failure of a surge arrester during the energization of a 420 kV transmission line, a measurement system was developed and installed in a substation. The results show that the system is capable of measuring switching transient voltages and can be considered a flexible solution for the long-term monitoring of transient overvoltages in substations.
ELECTRIC POWER SYSTEMS RESEARCH
(2023)
Article
Energy & Fuels
Peerawut Yutthagowith
Summary: This paper presents a new, simplified, and accurate method for evaluating the insulation performance of high-voltage equipment. The proposed approach improves the accuracy of the evaluation by measuring and calculating the waveform parameters of the switching impulse voltages.
Article
Engineering, Electrical & Electronic
Guohua Zhou, Guihua Mao, Hongbo Zhao, Shuhan Zhou, Paolo Mattavelli
Summary: This article investigates and analyzes digital average-ripple-based control techniques for buck-type converters, introduces a new DAV/DACC control method with fast transient performance and high output-regulation accuracy, and discusses the stability of different control methods. Simulations and experiments are conducted to verify the theoretical analysis.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Ling Qin, Lei Zhou, Waqas Hassan, John Long Soon, Min Tian, Jingfeng Mao, Lei Ren
Summary: A transformer-less soft-switching high-gain pulsewidth-modulation (PWM) converter is proposed, which enhances the effective duty cycle through measures like zero-voltage switching (ZVS) and natural turn-off. It also eliminates ringing issue and has fewer power components count, reduced voltage stress, and lower cost. The proposed topology demonstrates a maximum efficiency of 97.1% over wide operating operations.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2023)