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
Chemistry, Multidisciplinary
Nikolay Hinov, Tsvetana Grigorova
Summary: The main objective of this article is to propose a rational methodology for designing multi-phase step-down DC-DC converters, which can find applications both in engineering practice and in power electronics education. This study discusses the main types of losses in the multi-phase synchronous buck converter circuit and provides analytical dependencies for their calculation. The output and input current ripples of the multi-phase buck converter are analyzed and compared analytically and graphically, and the impact of various parameters on power losses is examined.
APPLIED SCIENCES-BASEL
(2023)
Article
Automation & Control Systems
Xinquan Lai, Jingxiang Zhao, Bingyuan Wang
Summary: This article proposes a current-mode dc-dc buck converter with an accurate current limit using a multiplex pulsewidth modulation (PWM) comparator, which simplifies the process of handling inductor current information, improves response speed, and greatly enhances accuracy.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
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
Engineering, Mechanical
Peiyu Gao, Fuhong Min, Chunbiao Li, Lei Zhang
Summary: This paper studies the current-controlled DC-DC buck converter from a new perspective using the switching theory of flow, developing analytical conditions for switching motion at the collision boundary and time boundary. Visualization of various mapping structures in periodic and chaotic status is done through phase trajectory and time sequence diagrams. Eevolution of capacitor voltage, inductor current, and high-frequency and low-frequency situations are illustrated via bifurcation diagram. The distribution of the system's mapping structures with varying reference current and voltage is systematically exhibited to demonstrate different forms and reveal the motion characteristics of the system.
NONLINEAR DYNAMICS
(2021)
Article
Engineering, Electrical & Electronic
Jiann-Jong Chen, Yuh-Shyan Hwang, Yitsen Ku, Yun-Hua Li, Jian-An Chen
Summary: This article presents a hysteretic-current-controlled buck converter with constant-frequency-controlled and active-current-sensing techniques. The converter achieves constant switching frequency using phase-frequency-locked techniques, maintaining stability even with input or output changes. The proposed converter has high power efficiency, stable switching frequency, and low voltage error.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
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
Changming Zheng, Tomislav Dragicevic, Jiasheng Zhang, Rong Chen, Frede Blaabjerg
Summary: This article presents a composite robust discretized quasi-sliding mode control scheme for stabilization of buck-converter fed dc microgrids with constant power loads (CPLs). The scheme features enhanced disturbance rejection, inherent chattering suppression, and guaranteed dynamics. Simulation and experimental results confirm the superiority of the proposed approach.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Shuai Fan, Fengjiang Wu, Hongchen Liu
Summary: This study focuses on the instability issue of bidirectional buck-boost current-fed isolated dc-dc converter when feeding the constant power load. It proposes an active damping method and a parameter design method to ensure closed-loop stability and good dynamic response of the system.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Qurat ul Ain, Danial Khan, Byeong Gi Jang, Muhammad Basim, Khuram Shehzad, Muhammad Asif, Deeksha Verma, Imran Ali, Young Gun Pu, Keum Cheol Hwang, Youngoo Yang, Kang-Yoon Lee
Summary: This article presents a high-efficiency fast transient COT control DC-DC buck converter for IoT applications, which utilizes current reused current sensor and fast transient DC-offset cancellation technique to enhance loop stability and improve power conversion efficiency. This design achieves peak efficiency of 95.56% at 0.5 A and efficiency of 84.60% at light load of 10 mA.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Automation & Control Systems
Huiming Wang, Zhize Zhang, Ching-Yen Weng, Xianlun Tang
Summary: This article investigates the voltage regulation of a dc-dc buck converter with current constraint and proposes a robust finite-time control scheme that combines finite-time disturbance observer and finite-time control techniques for maintaining satisfactory dynamic performance and disturbance rejection.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Fengjiang Wu, Shuai Fan, Suhua Luo
Summary: The bidirectional buck-boost current-fed isolated dc-dc converter has the advantages of low current stress, high efficiency, and wide power/voltage conversion range. The stability of both operation modes is ensured through parameter design and verification.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
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, Electrical & Electronic
Chuang Wang, Yan Lu, Xiuping Li, Rui P. Martins
Summary: This paper presents a dual-branch series-parallel hybrid buck converter with flying capacitor voltage auto-balancing and reduced output impedance. The converter balances the flying capacitor voltages automatically and reduces the output impedance to decrease conduction loss.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2022)
Article
Chemistry, Analytical
Humam Al-Baidhani, Marian K. K. Kazimierczuk
Summary: This paper presents a robust nonlinear current-mode control approach for a pulse-width modulated DC-DC Cuk converter in a simple analog form. The proposed controller does not require output capacitor current sensor and double proportional-integral compensators, minimizing the cost and complexity without degrading control performance. The simplified nonlinear controller rejects large disturbances, provides fast transient response, and maintains constant switching frequency. The proposed control methodology is verified through simulation, showing robust tracking performance, low percentage overshoot, fast transient response, and wide operating range.
Article
Computer Science, Hardware & Architecture
Zhidong Wang, Youngjae Jung, Jeongjin Roh
ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING
(2015)
Article
Engineering, Electrical & Electronic
Quanzhen Duan, Zhidong Wang, Jeongjin Roh
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS
(2016)
Article
Computer Science, Hardware & Architecture
Jaejin Yeo, Khurram Javed, Jaeseong Lee, Jeongjin Roh, Jae-Do Park
ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING
(2017)
Article
Engineering, Electrical & Electronic
Younghyun Yoon, Quanzhen Duan, Jaejin Yeo, Jeongjin Roh, Jongjin Kim, Dongwook Kim
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2016)
Article
Engineering, Electrical & Electronic
Khurram Javed, Jeongjin Roh
IEICE ELECTRONICS EXPRESS
(2016)
Article
Engineering, Electrical & Electronic
Quanzhen Duan, Youngjae Jung, Danbi Choi, Jeongjin Roh, Jongpal Kim
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS
(2016)
Article
Engineering, Electrical & Electronic
Youngjae Jung, Quanzhen Duan, Jeongjin Roh
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2017)
Letter
Engineering, Electrical & Electronic
Khurram Javed, Jaejin Yeo, Jaeseong Lee, Jeongjin Roh
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS
(2017)
Article
Engineering, Electrical & Electronic
Jun Tang, Jaeseong Lee, Jeongjin Roh
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2019)
Article
Engineering, Electrical & Electronic
Seokjae Song, Jaeseong Lee, Jeongjin Roh
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS
(2019)
Article
Engineering, Electrical & Electronic
Jaeseong Lee, Seokjae Song, Jeongjin Roh
INTERNATIONAL JOURNAL OF ELECTRONICS
(2020)
Article
Computer Science, Information Systems
Jaeseong Lee, Seokjae Song, Jeongjin Roh
Article
Chemistry, Multidisciplinary
Wenqi Zheng, Han Xie, Yunfan Chen, Jeongjin Roh, Hyunchul Shin
Summary: The study proposed a new end-to-end learnable framework PIFNet, which integrates LiDAR point cloud and camera images and improves the accuracy and consistency of object detection through the Encoder-Decoder Fusion module. By fusing color, texture, and depth information, the irregularity and sparsity issues of LiDAR point cloud data were successfully addressed.
APPLIED SCIENCES-BASEL
(2022)
Article
Computer Science, Information Systems
Jaedo Kim, Seokjae Song, Jeongjin Roh
Article
Computer Science, Information Systems
Jiho Moon, Jaeseong Lee, Seungjin Kim, Gyeongha Ryu, Ju-Pyo Hong, Juhyun Lee, Haifeng Jin, Jeongjin Roh
