Article
Automation & Control Systems
Fabiano Gonzales Nimitti, Julian Cezar Giacomini, Antonio Manuel Santos Spencer Andrade
Summary: This article presents a new nonisolated bidirectional dc-dc converter with low voltage and current stresses across the semiconductor devices. The converter is a combination of a dual-stacked bidirectional boost converter and offers synchronous and asynchronous operation modes to reduce current ripple. The article also discusses the modeling and control of the proposed converter. A 1-kW, 144-V/400-V prototype was built to validate the theoretical evaluations, achieving peak efficiencies of 96.33% and 96.87% for step-up and step-down modes, respectively.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Computer Science, Information Systems
Yao Rong Ong, Shuyu Cao, Sze Sing Lee, Chee Shen Lim, Max M. Chen, Naser Vosoughi Kurdkandi, Reza Barzegarkhoo, Yam P. Siwakoti
Summary: This paper proposes a universal converter that can generate positive DC voltage, negative DC voltage, and sinusoidal AC voltage. By controlling the duty cycle and switch states, the voltage is controlled and the operation mode is selected. Compared to existing universal converters, this topology reduces the number of conducting switches and high-frequency switches.
Article
Engineering, Electrical & Electronic
Inho Park, Jinwoo Jeon, Hyunjin Kim, Taehyeong Park, Chulwoo Kim, Junwon Jeong
Summary: This article presents a TE energy-harvesting interface with a reconfigurable dc-dc converter and a time-based ILE MPPT method. The proposed interface achieves high efficiency and stable energy extraction performance.
IEEE JOURNAL OF SOLID-STATE CIRCUITS
(2023)
Article
Engineering, Electrical & Electronic
Yihan Lin, Tianxian Wu, Yanhan Zeng, Jingci Yang, Weijian Chen, Zhixian Li
Summary: This paper presents a self-startup and ultra-low-voltage boost DC-DC converter for thermoelectric energy harvesting. The converter achieves a minimum self-startup voltage using a two-stage auxiliary boost startup circuit, and is capable of sustaining operation at a 15 mV input. The proposed maximum power point tracking (MPPT) scheme, combined with coarse and fine frequency tuning, improves tracking accuracy and reduces output ripples. By combining the zero current switching (ZCS) scheme with MPPT, the converter achieves a peak end-to-end efficiency of 71% and provides a regulated 1.25V output with a maximum power of 540 mu W.
MICROELECTRONICS JOURNAL
(2022)
Article
Chemistry, Physical
Mahmoud Dhimish, Nigel Schofield
Summary: The paper introduces a single-switch unidirectional buck-boost dc-dc converter for solar PV and fuel cell applications, achieving high efficiency and wide input voltage range. With a limited number of passive components and specific topology, the converter enables continuous power flow control and maintains stability of inductance current and output voltage under different conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Multidisciplinary
Yasser Yousefi Zandabad, Seyed Saeed Fazel
Summary: In this paper, a new structure for a DC-DC full-bridge buck/boost LLC three-port converter (TPC) is proposed, which integrates an asymmetric fixed frequency full-bridge LLC network and the buck/boost circuit. The advantages of this structure include reduced components, high efficiency, soft switching, and wide gain. The proposed TPC is suitable for Photovoltaic (PV)/battery hybrid power applications and manages power flow through control variables, achieving an output voltage adjustment.
ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH
(2023)
Article
Engineering, Electrical & Electronic
Thinh Tran-Dinh, Hieu Minh Pham, Loan Pham-Nguyen, Sang-Gug Lee, Hanh-Phuc Le
Summary: This paper introduces a self-startup power management IC (PMIC) designed for thermoelectric generators (TEGs), supporting cold-start operation and achieving high efficiency output at different voltages.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2021)
Article
Computer Science, Information Systems
Marcin Walczak, Leszek Bychto
Summary: This study evaluates how the parasitic resistances of a converter influence its input resistance and if they are relevant in terms of MPPT system operation.
Article
Engineering, Electrical & Electronic
Mahdi Rezvanyvardom, Amin Mirzaei
Summary: This article introduces a new zero-voltage transition pulse-width-modulated bidirectional DC-DC buck-boost converter, which features simple control, simple structure, and reduced stresses on power switches, making it suitable for various industrial applications. The converter achieves an efficiency around 97% at full load in both boost and buck modes and can be applied to other basic non-isolated bidirectional converters. The theoretical waveforms and suggested topology were validated through experiments conducted on a hardware prototype of a 100-W converter.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Ali Sarikhani, Babak Allahverdinejad, Mohsen Hamzeh
Summary: This article introduces a novel nonisolated buck-boost dc-dc converter with a wide range of conversion ratios, suitable for industrial and renewable energy applications. It addresses the operation principles and small-signal modeling of the proposed converter, comparing it with other topologies in terms of various criteria. Additionally, a prototype is developed for experimental validation of theoretical analysis.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Computer Science, Artificial Intelligence
Nukala Jaswanth, G. RaamDheep
Summary: This study explores the use of an artificial neural network (ANN) to monitor the efficiency of thermoelectric generators (TEGs) through maximum power point tracking (MPPT) method.
Article
Engineering, Electrical & Electronic
Mohammad Saleh Khan, Soumya Shubhra Nag, Anandarup Das, Changwoo Yoon
Summary: This article introduces a new non-isolated bidirectional dc-dc converter that can step down and step up the voltage. The wide voltage range operation of this converter can improve the efficiency of EV powertrains. Compared to existing bidirectional buck-boost converters, the proposed converter offers lower switch stress, reduced converter size, and better efficiency.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2023)
Article
Automation & Control Systems
Mizraim Martinez-Lopez, Javier Moreno-Valenzuela, Wei He
Summary: In this study, a novel Lyapunov function-based robust nonlinear proportional-integral (PI)-type controller is proposed for regulating the output voltage of a DC-DC inverting buck-boost power converter operating in continuous conduction mode (CCM). The control scheme ensures global asymptotic stability of the closed-loop system even with parameter uncertainty. The closed-loop trajectories are analyzed using the Lyapunov method and LaSalle's invariance principle. The proposed scheme demonstrates robustness to additive disturbances and provides simple gain tuning guidelines. Real-time experiments support the theoretical results, and experimental tests show that the proposed PI-type control design performs consistently well under line and load disturbances.
Article
Engineering, Electrical & Electronic
Fabiano Gonzales Nimitti, Antonio Manuel Santos Spencer Andrade
Summary: This paper proposes a new bidirectional nonisolated DC-DC converter for interfacing microgrid energy storage systems. The converter has the advantages of low cost, low energy consumption, and simplicity of operation, and its performance is validated through experiments.
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Shih-Chang Hsia, Ming-Hwa Sheu, Jhih-Jian Jhou
Summary: The study developed a high-voltage buck-boost conversion chip that can achieve a stable output voltage without the need of detecting input level. With automatic adjustment of on-time value, the chip can maintain high efficiency and stable output over a wide input voltage range.
MICROELECTRONICS JOURNAL
(2021)