Article
Engineering, Electrical & Electronic
Behdad Faridpak, Mohammad Bayat, Mojtaba Nasiri, Rahim Samanbakhsh, Meisam Farrokhifar
Summary: This article presents a high voltage gain dc-dc converter that combines various substructures to achieve high voltage gain and low duty cycle ratio. Efficiency is improved by adding an auxiliary switch, particularly for high voltage gains. Experimental results validate the improvement in voltage gain and efficiency by utilizing the auxiliary switch.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Shouheng Han, Yijie Wang, Zhenli Xie, Yueshi Guan, J. Marcos Alonso, Dianguo Xu
Summary: This letter proposes a switched capacitor-based continuously adjustable modular bidirectional dc-dc converter with three types of modules, achieving a peak efficiency of 97.15% in a prototype.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Inho Park, Hyunjin Kim, Taehyeong Park, Junwon Jeong, Chulwoo Kim
Summary: This letter presents a 12V-to-1.2V switched-capacitor dc-dc converter for automotive applications. By adjusting the bias current and using feedback loop, the load transient response is improved, and the overshoot is reduced with the proposed phase-shedding control.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Computer Science, Information Systems
Robert Stala, Zbigniew Waradzyn, Szymon Folmer
Summary: This paper presents research results on a high-voltage-gain DC-DC converter with low input current ripple. The proposed topology combines a low-volume boost converter and a switched-capacitor voltage multiplier (SCVM) to achieve a four-fold voltage gain while reducing voltage and current stress on the components. The paper includes a concept of the hybrid converter, analytical models for component and switching parameter selection, an efficiency model, and verification through simulation tests and experiments.
Review
Chemistry, Multidisciplinary
Julio C. Rosas-Caro, Jonathan C. Mayo-Maldonado, Jesus E. Valdez-Resendiz, Avelina Alejo-Reyes, Francisco Beltran-Carbajal, Oswaldo Lopez-Santos
Summary: This article provides an overview of non-isolated DC-DC converter topologies that use switched-capacitor circuits for large voltage-gain conversion. It reviews different topologies and charge exchange types, and introduces the multilevel boost converter and other recent topologies. The article focuses on switched-capacitor circuits with resonant charge interchange and provides a new proof of discharging losses.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Electrical & Electronic
Punit Kumar, Mummadi Veerachary
Summary: This paper proposes a Z-network plus switched-capacitor based DC-DC boost converter, which features high-voltage gain and lower duty ratios compared to conventional quasi-Z-source converters. The steady-state analysis and closed-loop response measurements validate the effectiveness of the converter.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Shengdao Ren, Chushan Li, Lin Zhu, Wuhua Li, Xiangning He, Wanyuan Qu
Summary: This article presents a power supply with a simple circuit structure for medium-voltage direct current (MVdc) systems. The power supply utilizes cascaded standardized submodules to cope with high-voltage input and reduce the isolation requirement, and ensures voltage balance of all dc-link capacitors with independently operating submodules.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Computer Science, Information Systems
Kuo-Kai Shyu, Yi-Chang Yu, Xin-Lan Lin, Lung-Hao Lee, Po-Lei Lee
Summary: This study proposes a novel bidirectional-switched-capacitor-based interleaved converter by improving the shortcomings of two well-known unidirectional-switched-capacitor-based interleaved converters. It overcomes the output voltage drop caused by circuit impedance and ripple in the Cockcroft-Walton-based converter and solves the high-voltage stress issue in the Dickson-based converter. Moreover, it redesigns the unidirectional boost function of these converters to make them bidirectional DC-DC converters. Experimental results verify the feasibility of the proposed method.
Article
Engineering, Electrical & Electronic
Markus Mogensen Henriksen, Dennis Oland Larsen, Pere Llimos Muntal
Summary: This paper presents a design methodology and key considerations for high-voltage and highly-integrated switched-capacitor power converters. A 48-12 V ladder switched-capacitor power converter is implemented to verify the design methodology, with a peak efficiency of 93.5% and a maximum output power of 24.5 W, resulting in a power density of 23 W/cm(3).
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Haopeng Kang, Jing Jin, Xiaoming Liu, Xiaofei Wang, Pengli Hong, Jianjun Zhou
Summary: The study presents a high efficiency switched-capacitor DC-DC converter with pulse frequency modulation control, verified through model validation, design optimization, and fabrication. It achieves a peak efficiency of 86.2% and maintains efficiency above 80% under different load conditions.
MICROELECTRONICS JOURNAL
(2021)
Article
Energy & Fuels
Robert Stala, Adam Pilat, Maciej Chojowski, Mikolaj Skowron, Szymon Folmer
Summary: This paper presents a detailed elaboration of the design concept, parameters, experimental investigation, and thermal numerical model solved using the finite element method for a high-power-density DC-DC converter. The design is based on switched capacitor circuits supported by a resonant choke and utilizes a printed circuit board for both the resonant inductance design and cooling of devices. Experimental results validate the design concept and parameters, and the convergence of experimental results with heating simulations is demonstrated.
Article
Engineering, Electrical & Electronic
Prescott H. McLaughlin, Jan S. Rentmeister, M. Hassan Kiani, Jason T. Stauth
Summary: This article explores the merits of a variety of hybrid resonant switched-capacitor (SC) dc-dc converters under strict size constraints on passive components, comparing topologies using a minimum power loss figure of merit. The impact of area or volume constraints on inductors and capacitors is demonstrated. Common topologies are compared using the generalized FOM under different scaling scenarios and validated using an experimental prototype.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Energy & Fuels
Farid Mohammadi, Gevork B. Gharehpetian, Hasan Rastegar, Mohammad Farhadi-Kangarlu
Summary: This study suggests a non-isolated high gain step-up DC-DC converter for low power applications. The designed transformerless converter reduces the main switch current and voltage stress while maintaining high voltage gain. The switched-capacitor technique is used to obtain maximum voltage transfer gain using only one switch. The efficiency of the proposed converter is recorded above 94% in a wide range of output powers.
CSEE JOURNAL OF POWER AND ENERGY SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
Ziyu Xia, Jason T. Stauth
Summary: Hybrid switched-capacitor (SC) dc-dc converters offer high conversion ratios and small physical size, but the problem of flying capacitor voltage imbalance limits their adoption. This article presents a highly integrated hybrid SC converter for USB-powered applications, featuring fast balancing dynamics.
IEEE JOURNAL OF SOLID-STATE CIRCUITS
(2022)
Article
Computer Science, Information Systems
Anish Ahmad, Md Motiur Reza, Abdul R. Beig, Jamal Y. Alsawalhi, Khaled Al Jaafari
Summary: This paper presents a novel high gain bidirectional switched Z-source DC-DC converter, which has a high voltage conversion ratio and reduced switch voltage stress. It can achieve high voltage gain over a wide duty cycle range in different operating modes.
