Article
Engineering, Electrical & Electronic
Zhongzheng Zhou, Jiayan Jiang, Shu Ye, Dirui Yang, Jianguo Jiang
Summary: A bidirectional O-Z-source circuit breaker is proposed in this article for the reliable operation of DC microgrids with simplified structure and reduced component count, allowing bidirectional power flow. Design equations for component sizing are derived based on detailed mathematical models, along with the concept of equivalent capacitance for estimating the minimum detectable fault ramp rate for Z-source circuit breakers.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Giuseppe E. Biccario, Oleg Vitrenko, Roberto Nonis, Stefano D'Amico
Summary: The reduction of nominal supply voltage in CMOS technologies poses challenges in implementing circuit blocks compliant with standardized communication protocols or dealing with off-chip signals in voltage domains larger than the nominal supply. Design techniques like cascoding, voltage shifting, and adaptive biasing are effective at avoiding the need for customized voltage resistant I/O devices, but the design of switches in multiple-channel blocks becomes critical.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2021)
Article
Engineering, Electrical & Electronic
Haoran Li, Shengdong Wang, Zhiliang Zhang, Jingfei Zhang, Mengrui Li, Zhanbiao Gu, Xiaoyong Ren, Qianhong Chen
Summary: A digital bidirectional synchronous rectification online calculation control method for 700V high voltage has been proposed, which effectively reduces common mode noise and improves efficiency. Experimental results show that the LLC efficiency in both forward and reverse modes has been enhanced.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Sachin Maheshwari, Spyros Stathopoulos, Jiaqi Wang, Alexander Serb, Yihan Pan, Andrea Mifsud, Lieuwe B. Leene, Jiawei Shen, Christos Papavassiliou, Timothy G. Constandinou, Themistoklis Prodromakis
Summary: Memristive technology has seen explosive growth in the past decade, but transitioning it from the lab to the marketplace requires the development of an accessible and user-friendly design flow, supported by an industry-grade toolchain. This study demonstrates the behavior of a custom memristor model fabricated in-house, integrated with Cadence Electronic Design Automation tools for verification.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2021)
Article
Engineering, Electrical & Electronic
C. Nagesha, N. Lakshminarasamma
Summary: A reconfigurable gain circuit is proposed for an LCLC resonant converter with bidirectional capability considering wide varying redox flowbattery source. A suitable hybrid control scheme is proposed for LCLC resonant converter with secondary synchronous rectifier. The proposed circuit enables the configuration of secondary bridge as an active voltage doubler, full-bridge circuit in forward and reverse power transfer modes, respectively. The reconfigurability helps in designing a transformer with lower secondary turns and achieving desired high gain. The presence of LCLC resonant tank provides additional gain; the hybrid control scheme ensures zero-voltage switching turn-ON for the primary and secondary synchronous MOSFETs. The proposed converter is analysed using fundamental harmonic approximation and experimentally verified for an 800 V/1 kW hardware prototype fed from 24 to 54 V input.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Hamzeh J. Ahmad, Makoto Hagiwara
Summary: This article presents an interleaved bidirectional chopper with auxiliary converters for onboard energy storage systems, aiming to reduce the mass and volume of current-smoothing inductors. The proposed chopper consists of multiple subconverters, each including a bidirectional chopper cell, a current-smoothing inductor, and an auxiliary converter. The auxiliary converters can be used to suppress ripple current and protect the low-voltage side against faults.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Chua-Chin Wang
Summary: This tutorial introduces a complete mixed-voltage I/O buffer design flow using nano-scale CMOS processes to address reliability issues caused by I/O compatibility among chips fabricated using different processes, and discusses various design considerations for the buffers.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2021)
Article
Automation & Control Systems
Longyang Yu, Laili Wang, Chengzi Yang, Lei Zhu, Yongmei Gan, Hong Zhang
Summary: A nonisolated bidirectional dc-dc converter is proposed for energy storage systems, which has the advantages of simple structure, fewer components, common ground, lower voltage stress, and wide voltage gain range. Compared with conventional buck converters, the novel converter increases the effective duty cycle and reduces voltage stresses across the active switches.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
S. Nandakumar, I. Venkata Raghavendra, C. N. Muhammed Ajmal, Satish Naik Banavath, Kaushik Rajashekara
Summary: This article proposes a bidirectional solid-state DC circuit breaker topology for reliable operation of DC microgrids. The proposed topology is modular and uses low-power rated devices, low-current rated sensors, and pre-fault interruption. A detailed mathematical analysis is presented to validate the design and operation of the proposed circuit breaker. A laboratory prototype is developed to verify its performance.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Chua-Chin Wang, Pang-Yen Lou, Zong-You Hou, Hsiu-Chun Tsai
Summary: This study presents a high-accuracy bidirectional high-voltage current sensor fabricated using CMOS technology, featuring noise filter, sense stage, controller, and a switching network for direction control. The sensor includes a digital feedback loop for real-time current direction detection, with good performance in terms of silicon area, voltage error, and voltage/current sensing range.
MICROELECTRONICS JOURNAL
(2021)
Article
Computer Science, Information Systems
Jenhao Teng, Posheng Shen, Bohsien Liu, Siwei Chen
Summary: This paper proposes a circuit configurable bidirectional DC-DC converter for retired batteries, which can achieve a wide-range voltage conversion ratio and bidirectional buck and boost abilities. The proposed converter, constituted by cascading a two-phase interleaved half-bridge circuit and a voltage-doubler circuit, can operate in interleaved boost/buck mode, single boost/buck mode, cascaded-buck-boost mode, or single buck/boost mode concerning the voltage levels.
Article
Automation & Control Systems
Swati G. Savaliya, Baylon G. Fernandes
Summary: An optimized configuration of bidirectional Z-source circuit breaker using a coupled inductor is introduced for fault isolation in low-voltage DC microgrid. The proposed circuit breaker is designed to operate with a single coupled inductor, reducing component count and demonstrating fast fault clearance capabilities.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Automation & Control Systems
Zhixing He, Ben Zhou, Zongjian Li, Biao Liu, Kangning Chen, Lei Wang, Qianming Xu, Yandong Chen, Quan Chen
Summary: This article presents a bidirectional normally-on SiC junction field-effect transistor (JFET) based supercascode high-voltage dc solid-state circuit breaker (BSC-SSCB) with sensorless current-time configuration. It proposes a sensorless detection-driving circuit (DDC) to detect the current and drive the main switch, achieving quick fault current interruption and balanced voltages. The proposed BSC-SSCB is suitable for fast circuit breaking in medium-voltage dc applications.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Energy & Fuels
Chan-Soo Lee, Ayodeji Matthew Monebi, Dansran Bayarsaikhan, Songyuan Xu, Bierng-Chearl Ahn, In-Sung Lee
Summary: This paper presents a design for a charge pump DC-DC boost regulator with an integrated low-voltage control circuit. The design utilizes 0.35μm CMOS technology to implement the charge pump and feedback circuits, providing an efficient solution for low-power applications. The control circuit incorporates an error amplifier, oscillator, and comparator, operating at a supply voltage of 1.8-3.5V and a frequency of 2MHz. The stability of the system is achieved through pole-zero compensation in the feedback circuit. The performance of the regulator circuit, which includes four pump stages, is analyzed using the Cadence simulation tool. Measurement results of the fabricated 0.35μm CMOS regulator demonstrate that the error amplifier maintains a controlled transient time within 1.0μsec and accurately regulates the output voltage from 7.8V to 9.4V, with a ripple of 27-38mV and a maximum current of 4.5mA.
Article
Engineering, Electrical & Electronic
Xiaoguang Yang, Xiaobing Zhao, Jietao Liu
Summary: In this paper, the voltage equalizer in energy storage systems is simplified by integrating it into the bidirectional converter of the battery system, eliminating the need for a separate DC-DC converter. The integrated system utilizes an LC resonant circuit and a voltage multiplier as the voltage equalization circuit, which offers simplicity and low complexity. The design process based on the analysis model allows the equalizer to achieve optimal parameter configuration. Test results demonstrate that the proposed LC-SVM can automatically achieve voltage balance between energy storage cells without additional control.
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS
(2023)