Article
Engineering, Electrical & Electronic
Juhyun Bae, Jae-Sang Kim, Minsu Lee, Jung-Kyu Han, Gun-Woo Moon
Summary: A conventional asymmetrical half-bridge (AHB) converter has limitations in wide input voltage range, but a proposed AHB converter with linear voltage gain solves these limitations and improves efficiency.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Automation & Control Systems
Seung-Hoon Lee, Seok-Woo Jeong, Jae-Kuk Kim
Summary: This article proposes an AHB converter with an integrated boost converter to overcome the issues of the traditional converter, achieving high efficiency and low power loss in a wide input voltage range.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Giorgio Spiazzi, Simone Buso
Summary: This article investigates the voltage gain behavior and dependencies of an asymmetrical half-bridge flyback converter, proposing a theoretical model and validating it through experiments. Compared to the popular LLC converter, the half-bridge flyback converter offers simple duty-cycle control and constant switching frequency, making it suitable for high frequency and compact power supply designs.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Yeu-Torng Yau
Summary: This paper proposes an AHB flyback converter with constant off-time and pulse frequency modulation, achieving a wide range of zero voltage switching and improving system stability.
APPLIED SCIENCES-BASEL
(2022)
Article
Computer Science, Information Systems
Rui Wang, Yinan Li, Chuan Sun, Song Hu, Xiaodong Li, Wu Chen, Gang Lv
Summary: This study proposes and implements a half-dual bridge resonant converter (H-DBRC) with voltage match modulation (VMM) to overcome the weakness of the narrow conversion gain of the dual bridge resonant converter. The synergistic effect between the H-DBRC structure and VMM strategy allows for maximized zero-voltage switching operation and minimized circulating current. The theoretical analysis is confirmed through simulation and experimental verifications.
Article
Automation & Control Systems
Lucas Mondardo Cunico, Andre Luis Kirsten
Summary: The three-phase dual-active-bridge (3p-DAB) converter is commonly used for high-power dc-dc isolated conversion. This article introduces the use of a Wye-extended-Delta (Y-Delta e) transformer winding in the 3p-DAB converter to improve efficiency under light load conditions. The framework developed allows for a complete analysis of the converter and presents a negative-sequence modulation scheme for maximum efficiency. Experimental results show a significant increase in converter efficiency when operating at light load.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Automation & Control Systems
Zhe Shi, Yu Tang, Yingjun Guo, Xin Li, Hexu Sun
Summary: This article proposes an LLC half-bridge resonant converter analysis method that considers backflow power and reduces it by optimizing resonant parameters. The method avoids additional auxiliary circuits and control complexity, improving circuit stability.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Automation & Control Systems
Jiayi Kong, Keyue Ma Smedley, Hong Cheng
Summary: This article proposes a fixed on-time modulation (FTM) method for half-bridge series resonate converters (SRCs) to achieve full range regulation for all loads. The method features low current stresses, zero voltage switching turn-on for transistors and zero current switching turn-off for diodes. The article provides a comprehensive analysis on the operation principle, voltage gain curves, component stresses, and comparisons with other methods. Additionally, it discusses the extension of the FTM method to a family of half-bridge SRCs and provides voltage gains of different topologies. A 200 W prototype was built and tested for verification of the theoretical analysis.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Giorgio Spiazzi, Simone Buso
Summary: This article presents the analysis and design of a high-power-factor rectifier that integrates a discontinuous conduction mode operated Boost input cell with an asymmetrical half-bridge flyback converter. The decrease in dc link voltage at light load limits the switches' voltage stress. A suitable design procedure is described that allows to calculate all converter parameters to meet the design specifications and achieve zero-voltage turn-ON for the switches in any operating condition. Experimental results validate the theoretical analysis.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Deshang Sha, Sunbo Wang
Summary: This article presents a single-stage ac-dc converter based on the dual active bridge with natural power factor correction. A modulation strategy and control technique are used to achieve a unity power factor without inner current tracking loops and lookup tables. A notch filter is employed in the output voltage feedback path to reduce the impact of low-frequency output-voltage ripple on the regulator. Zero voltage switching (ZVS) is achieved on all input-side power devices and on all output-side power devices under specific load conditions with the proposed control strategy. A 1.4-kW prototype has been constructed to validate the effectiveness of the proposed converter and control strategy.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Alfredo Medina-Garcia, Francisco J. Romero, Diego P. Morales, Noel Rodriguez
Summary: This article analyzes and optimizes a power converter based on an asymmetrical half-bridge flyback topology, discussing two resonant control methods, and proposes a zero voltage resonant valley switching control method. The advantages of the proposed control methods are demonstrated in a 65W adaptor prototype.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Matthias Schulz, Stefan Ditze
Summary: This article discusses the analysis of a zero voltage switched isolated bidirectional half-bridge active-clamp current-fed push-pull converter for a power of 1 kW. By combining active-clamping and advanced control scheme, this converter achieves soft-switching features, reducing overvoltage stress, voltage spikes, and reverse-recovery. The operating principles are analyzed and validated with measurements.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Automation & Control Systems
Pingyuan Lyu, Jiangming Huang, Guipeng Chen, Wenfeng Cui
Summary: This article proposes a simple fault-tolerant strategy to enhance the reliability of the asymmetric half-bridge dual-output converter. By reconstructing the topology with redundant switches, normal output voltages can still be maintained in the event of an open-circuit fault. Two reconstructed topologies are obtained in postfault modes depending on the faulty switches, and they can operate similarly using a modified modulation scheme. Additionally, a simple fault detection scheme is introduced using a voltage sensor to quickly diagnose open-circuit faults in all switches, enabling smooth mode transitions.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Rui Huang, Duo Xu, Feiming Liu, Jin Sha, Jianping Xu
Summary: In this article, a half-bridge class-D audio amplifier system with an embedded bidirectional buck-boost converter is proposed. The system effectively suppresses bus voltage pumping and improves power density and audio output quality.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Hemasundara Rao Kolla, Neti Vishwanathan, Bhagwan K. Murthy
Summary: This article presents a dual-output series resonant converter (SRC)-based light-emitting diode (LED) driver that utilizes three switches to form two half-bridge networks. The driver offers reduced switch count and independent control. It utilizes asymmetric duty cycle control to regulate the LED operating currents and a low-frequency pulsewidth modulation (PWM) dimming scheme to control the illumination of each LED load. All switches in the converter operate with zero-voltage turn-on to minimize switching losses.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)