Article
Computer Science, Information Systems
Ali Bughneda, Mohamed Salem, Eklas Hossain, Dahaman Ishak, Natarajan Prabaharan
Summary: This work presents a cascaded five-level resonant boost DC-DC converter with variable frequency control to achieve wide load and input voltage variation, high efficiency, and zero voltage switching. The converter design and selection of voltage gain and operation frequency range were discussed in detail. Simulation results using MATLAB/Simulink showed the different behavior of the LLC circuit with a five-level inverter compared to full-bridge inverters. The adopted variable frequency control demonstrated fast dynamic response and high efficiency in various input and load conditions. Experimental validation with a laboratory prototype confirmed the effectiveness and viability of the proposed converter.
Article
Energy & Fuels
Wei Zheng, Cong Hu, Bin Zhao, Xiao-Bao Su, Gang Wang, Xiao-Wan Hou, Bruce Gu
Summary: This paper presents a highly efficient two-stage DC/DC converter for electronic power conditioner. The converter achieves high efficiency with fewer semiconductors and reduced EMI noise through the use of zero-voltage switching and zero-current switching processes.
Article
Engineering, Multidisciplinary
Vinay Rathore, Siddavatam Ravi Prakash Reddy, Kaushik Rajashekara
Summary: This article proposes a multilevel dc-dc converter topology for fast charging of electric and plug-in hybrid electric vehicles. The proposed topology reduces the output filter size and increases the power density of the converter, while achieving efficient charging through soft switching operation.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2022)
Article
Green & Sustainable Science & Technology
Salah Alatai, Mohamed Salem, Ibrahim Alhamrouni, Dahaman Ishak, Ali Bughneda, Mohamad Kamarol
Summary: A design proposal for a five-level LLC resonant DC-DC converter for battery chargers is presented in this paper. The proposed converter achieves high frequency operation and soft switching through a transform-less LLC resonant tank. It has advantages in terms of weight, size, cost, and implementation simplicity, while ensuring smooth energy conversion and higher power density and efficiency.
Article
Engineering, Electrical & Electronic
Fang Liu, Jianghu Wan, Li Jiang, Yong Li, Kang-Zhi Liu
Summary: This article presents a soft-switching full-bridge AC-DC converter with a simple active auxiliary branch. The converter achieves zero voltage switching and zero current switching conditions through the use of auxiliary switches and inductors. A clamping technique is employed to mitigate the voltage stresses caused by resonance. The proposed converter demonstrates high efficiency and outstanding performance.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Minglong Wang, Shangzhi Pan, Xiaoming Zha, Jinwu Gong, Wenqiang Lin, Jingmin Gao, Qipeng Deng
Summary: This article proposes a dual active bridge (DAB)-LLC-DCX dc-dc converter with integrated magnetics and shared rectifier for point of load applications, achieving tight voltage regulation, zero-voltage switching for all switches, and zero-current switching operation for the rectifier. A hybrid control strategy is introduced to achieve ZVS operation for all switches within full power range. Experimental results of an 80-W prototype validate the theoretical analysis.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Bo Li, Ping Wang, Zhishuang Wang, Xiaochen Ma, Huakun Bi
Summary: This paper introduces a new soft switching high voltage gain interleaved dc-dc converter for fuel cell vehicles, featuring low input current ripple and high voltage gain. By using a simple auxiliary circuit, all power switches can operate under soft switching conditions effectively. The proposed converter's main characteristics are validated through a 1-kW laboratory prototype.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Koteswara Rao Kothapalli, Manoj R. Ramteke, Hiralal Murlidhar Suryawanshi
Summary: A soft-switched isolated bidirectional dc-dc converter is proposed for distributed generation systems. The converter consists of a dual coupled inductor-based flyback energy conversion circuit, an active switch-based capacitor multiplier cell, and an active-voltage-clamping type circuit. The proposed converter achieves high efficiency and voltage step-up/down ratio, reduces voltage stresses, and achieves zero-voltage and zero-current switching. A laboratory-built set-up verifies the viability of the design concept, with measured peak efficiencies of 96.65% and 96.58% in boost and buck stages, respectively.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Automation & Control Systems
Koteswara Rao Kothapalli, Manoj R. Ramteke, Hiralal Murlidhar Suryawanshi, Naresh Kumar Reddi, Rajesh Babu Kalahasthi
Summary: A high gain nonisolated dc-dc converter is proposed for distributed generation systems, achieving high voltage gain by integrating different methods with reduced duty ratio. The inclusion of a passive-clamp circuit helps alleviate inductive voltage spikes across MOSFETs and reduce stress. Experimental results demonstrate high efficiency over a wide load range.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Automation & Control Systems
Andrzej Mondzik, Robert Stala, Stanislaw Pirog, Adam Penczek, Piotr Gucwa, Milosz Szarek
Summary: This article presents a novel concept of switch-mode dc-dc boost converters with reduced switching losses. The converters achieve zero voltage switching during the turn-off of a transistor using an auxiliary switching cell, which facilitates an increase in the efficiency or switching frequency of an IGBT-based boost converter.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Etienne Foray, Christian Martin, Bruno Allard, Pascal Bevilacqua
Summary: This article investigates the design of a low-cost 800-12 V, 4 W isolated dc/dc converter for automotive applications. The selected topology based on a multilevel flying-capacitor stage is analyzed, and the interest of operating at the limit of the zero voltage switching (ZVS) mode is revealed through simulation results. The design of a planar transformer adapted to the application is described, along with the design considerations of an IC brick that controls the power stage. The 4-W prototype with two transformer designs validates the choice of the operating mode, with a peak efficiency of 87.4%, confirming the advantages of the selected approach compared to existing solutions.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Parthasarathy Nayak
Summary: A novel soft-switched single-stage-isolated dc-ac converter topology is proposed in this letter, requiring fewer MOSFETs compared to a widely studied cycloconverter-type isolated dc-ac converter. This converter offers lower duty cycle loss, better efficiency, and electromagnetic interference performance than a CCT dc-ac converter, as well as improved thermal stability, requiring a smaller heat sink. The operation of the converter is demonstrated in a 1-kW prototype developed with SiC MOSFETs.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Tomokazu Mishima, Shoya Mitsui
Summary: This study presents a new single-stage high frequency-link three-phase LLC converter with soft switching commutation for a wide range of load power adjustment. The load power and voltage can be regulated by pulse frequency modulation and phase-shift pulsewidth-modulation.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Automation & Control Systems
N. J. Merlin Mary, Shelas Sathyan, Hiralal Muralidhar Suryawanshi
Summary: A three-level modified series-parallel bidirectional isolated dc-dc resonant converter (TL-MSPBRC) is proposed for EV battery charging. The converter's performance is enhanced by considering the parasitics in the transformer and using the first-harmonic approximation (FHA) equivalent circuit model. It has high efficiency, soft-switching capability, and minimized conduction losses. A 3.3-kW prototype with a battery voltage range of 230-300-V is developed to validate the design method and achieves an excellent efficiency of 97.7%.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Review
Automation & Control Systems
Sadeq Ali Qasem Mohammed, Jin-Woo Jung
Summary: This article comprehensively reviews the state-of-the-art soft-switching techniques used in power converters, systematically classifying them based on auxiliary-circuit and non-auxiliary-circuit techniques, and discussing in detail the soft-switching techniques for each type of power converter. It provides the advantages, disadvantages, and suitable applications of each soft-switching technique, as well as suggesting future research issues in soft-switching techniques for power converters.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2021)
Article
Engineering, Electrical & Electronic
Siqi Li, Sizhao Lu, Chunting Chris Mi
Summary: This article introduces the latest electric vehicle charging technologies utilizing wide bandgap devices, focusing on the applications of WBG devices in improving efficiency and power density, reducing costs, and introducing a performance evaluation index for wireless chargers.
PROCEEDINGS OF THE IEEE
(2021)
Article
Engineering, Electrical & Electronic
Jia-Qi Zhu, Yong-Ling Ban, Rui-Min Xu, Chunting Chris Mi
Summary: The study proposed an NFC-CPT-combined coupler for metal-cover smartphones, utilizing a cross slot embedded on the metal cover to achieve capacitive power transfer and NFC without the need for integrated compensation components inside the phone. The prototype demonstrated 5-W output power with a circuit efficiency of 935%, and a 61 mm detection range for the NFC antenna.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Thermodynamics
Jufeng Yang, Yingfeng Cai, Chris Mi
Summary: Accurate estimation of battery capacity based on battery surface temperature change is proposed in this paper. Analysis of smoothed differential thermal voltammetry curves and temperature variation transformation are used to reflect battery actual capacity and reduce initial inconsistency impact, showing superior performance compared with existing methods.
Article
Engineering, Multidisciplinary
Jianghua Lu, Guorong Zhu, Chunting Chris Mi
Summary: The successful commercialization of wireless power transfer technology requires a safe, reliable, and efficient charging infrastructure. However, metal objects and living organisms in close proximity to the charging system can pose safety hazards and affect system performance. This article provides a review of available designs for detecting metal and living objects in wireless power transfer systems, including their limitations and potential applications. It also suggests research topics to promote the development and commercialization of wireless charging systems.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2022)
Editorial Material
Engineering, Multidisciplinary
Yijie Wang, Chunting Chris Mi
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Jinglin Xia, Xinmei Yuan, Sizhao Lu, Jun Li, Shuling Luo, Siqi Li
Summary: Wireless power transfer (WPT) is more convenient and safer than conductive charging for power consumer electronics, biomedical devices, and transportation systems. Capacitive power transfer (CPT), as an alternative with better misalignment tolerance, lower cost, and weight, is becoming more attractive.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Sizhao Lu, Deyun Kong, Shuang Xu, Linglin Luo, Siqi Li
Summary: This study proposes a high-efficiency medium-frequency split planar transformer based on a low-cost ferrite core. By adopting a split planar structure, the transformer achieves high electrical insulation, efficiency, power density, and excellent heat dissipation performance. Finite-element analysis and experimental evaluation demonstrate that this transformer can simultaneously achieve high power, efficiency, power density, and electrical insulation.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Jing Lian, Xiaohui Qu, Xi Chen, Chunting Chris Mi
Summary: This article systematically analyzes the characteristics of a double-sided LCLC-compensated CPT converter and proposes a parameter design method to achieve load-independent constant current output and predesigned voltage limitations. This method can effectively mitigate breakdown and electromagnetic interference issues.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Ting Chen, Chenwen Cheng, Hong Cheng, Cong Wang, Chunting Chris Mi
Summary: This article proposes a power relay system for wirelessly powering multiple loads, and presents a mathematical model and compensation circuits to achieve efficient and interference-free power transfer.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Jufeng Yang, Yingfeng Cai, Chunting Chris Mi
Summary: In this study, a method based on the decoupled characteristic of the charging current is proposed to calculate the SoH of batteries. The method involves parameter identification of an equivalent circuit model and the use of a time constant feature to reflect the battery capacity degradation. Experimental results show that the proposed method has a reduced computational cost and provides satisfactory fitting performance.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2022)
Article
Engineering, Electrical & Electronic
Ting Chen, Chenwen Cheng, Hong Cheng, Cong Wang, Chunting Chris Mi
Summary: This article introduces a novel capacitive power transfer system with multiple constant voltage outputs. By designing capacitive repeater units and utilizing split-inductor matching networks, the system enables independent operation of multiple loads, and enhances electric coupling with aluminum oxide ceramics and L-LCL networks.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)
Article
Energy & Fuels
Zeyu Cheng, Zhi Cao, John T. T. Hwang, Chris Mi
Summary: This paper proposes a novel multi-phase single-turn permanent magnet synchronous motor (MSPMSM) to meet the stringent requirements of electric aircraft. The MSPMSM features a unique single-turn winding configuration, which reduces coil overhang, increases power density and torque, and reduces motor weight.
Article
Thermodynamics
Jufeng Yang, Xin Li, Xiaodong Sun, Yingfeng Cai, Chris Mi
Summary: This paper proposes a quick and robust battery capacity estimation method using a two-layer constant-voltage charging time-based model. Through studying the evolution of the model under different cut-off currents and utilizing a Ts-adaptive moving average filter, the proposed method can accurately determine the battery's state of health in real-world applications.
Article
Engineering, Electrical & Electronic
Hin Sang Lam, Huawei Yuan, Siew-Chong Tan, Chunting Chris Mi, Josep Pou, S. Y. R. Hui
Summary: This study introduces a bidirectional ac-dc power converter system using modular multilevel converters and dual active bridges, aimed at linking ac distribution voltage and dc grid for future EV charging infrastructure, with novel methods for powering EV charging in multistorey carparks and front-end control for system stability.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Wen-Chin Liu, Ching-Hsiang Cheng, Patrick P. Mercier, Chunting Chris Mi
Summary: This article presents a frequency-domain analysis for modeling the behavior of Constant-on-Time (COT)-controlled buck converters in wide-input-output-range scenarios. A design strategy is proposed to enable robust control with a duty-cycle-independent quality factor, and a constant Q-value circuit is constructed to experimentally verify the system stability and optimal load transient response. The design strategy is also extended to other COT buck control schemes with simulation and calculation verifications.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
