Article
Automation & Control Systems
Huakun Bi, Zonglei Mu, Yu Chen
Summary: This article proposes a new nonisolated dc-dc converter with wide voltage-gain range, low input current ripple, and low voltage stresses, by integrating an active switched-inductor cell, a zero current ripple cell, and a switched-capacitor cell.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Chong Shen, Hongfei Wu, Tao Liu, Mengxi Li
Summary: The TP-ADAB converter proposed is capable of wide output range and constant peak power applications, with the ability to achieve different output voltages through series or parallel connections. It significantly reduces the maximum output voltage/current of each power module and power rating of devices. The converter also achieves automatic voltage sharing in output series mode and current sharing in output parallel mode, while ensuring soft-switching of all power switches in a wide operation range.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Yisheng Yuan, Zhiqin Zhang
Summary: The article introduces a novel single-phase Vienna rectifier that solves the issues of narrow output voltage regulation range and large output voltage ripple amplitude by adding power switches and diodes.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2022)
Article
Engineering, Electrical & Electronic
Tao Jin, Xiao Sen Xiao, Zhongyi Zhang, Weixin Wu, Yisheng Yuan, Xingkui Mao
Summary: A three-level LLC resonant converter with a hybrid modulation strategy is proposed, which integrates two neutral-point-clamped arms through an auxiliary transformer. The proposed converter achieves zero-voltage switching and zero-current switching under wider operating voltage and full load range. A parameter optimization method is designed to minimize the frequency window and improve the efficiency of the converter. Experimental results of a 600-W prototype are provided to validate the proposed theoretical analysis and characterization.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Automation & Control Systems
Jinuk Kim, Sang-Wook Ryu, Minsung Kim, Jin-Woo Jung
Summary: This article introduces a triple-mode isolated resonant buck-boost converter for residential applications of photovoltaic arrays and fuel cells, operating efficiently over a wide input voltage range.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Computer Science, Information Systems
Shaoru Zhang, Huixian Li, Shuchun Duan, Xiuju Du, Shengli Liu, Pingjun Wang, Jielu Zhang
Summary: In fuel-cell-powered electric vehicles, a DC-DC converter is required to transform the unstable output voltage of the fuel cell into a suitable voltage for the motor drive. Existing converters cannot meet the requirements of high voltage gain, high efficiency, and a wide range of output voltage simultaneously. To address this, a high-gain DC-DC converter based on a switched capacitor structure is proposed in this paper, offering a wide range of output voltage and maintaining high voltage gain at lower duty ratios. The operating principles, key waveforms, and parameter design of the proposed converter are described and analyzed, and simulation and hardware experiments validate the theoretical analysis.
Article
Automation & Control Systems
Nam-Gyeong Kim, Seung-Won Jo, Byeongcheol Han, Han-Ho Choi, Minsung Kim
Summary: The proposed bidirectional resonant converter features a unique structure that minimizes switching loss over a wide voltage range and has been verified through experimentation. Different structures and operating modes are used on the high-voltage and low-voltage sides to achieve a high conversion ratio with low current ripple.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Dai Van Bui, Honnyong Cha
Summary: This letter proposes a PWM scheme based on phase-shift modulation for the 4P-IPOS converter. It investigates the operation with a dual-output configuration and achieves natural output voltages and inductor currents balancing without any extra components or dedicated control. The suggested scheme improves performance compared to the conventional PWM scheme, reducing input current ripple significantly at high voltage gain. An 800-W prototype of the 4P-IPOS converter was built and tested to verify its performance.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Siamak Esmaili, Mohammadreza Feyzi, Mohammad Bagher Bannae Sharifian, Mehran Sabahi
Summary: This paper presents a new high voltage-gain DC-DC converter suitable for hybrid electric vehicle applications. The proposed converter acts as an interface between the fuel cell and DC link, offering benefits such as low voltage stress, flexibility in duty cycle changes, and simplified control. By using a power switch with lower resistance, the total losses of the converter are reduced. The converter is analyzed in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), and a laboratory prototype is built and tested.
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Yinghao Song, Yu Tang, Jiarong Kan, Lin Jiang
Summary: A wide-gain boost converter based on LCD cell is proposed, suitable for generating a specific bus voltage in fuel cell power generation systems of electric vehicles. By integrating the classic boost converter with the LCD cell, the voltage gain is improved and the drawbacks of other LCD cell-based topologies are eliminated.
JOURNAL OF POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Shirin Askari, Hosein Farzanehfard
Summary: In this article, a simple and efficient nonisolated constant output current resonant converter is proposed, which is applicable to wide input voltage range and high-efficiency applications. The proposed converter combines a buck-boost converter with a half-bridge LCC resonant converter to improve the adjustable voltage conversion ratio. It achieves a constant output current feature and high efficiency through direct power feeding and cascaded outputs structure. The converter operates at the resonant frequency and can achieve zero-voltage switching and zero-current switching operations.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Qinglin Zhao, Jianmeng Zhang, Yuxia Gao, Deyu Wang, Qiuxia Yang
Summary: This article proposes a multimode hybrid LLC resonant converter with a wide output voltage range. The converter can operate in three different modes: low-gain mode, medium-gain mode, and high-gain mode, by controlling the drive signals of the primary switches. Variable frequency modulation is used in each mode, allowing for a smooth transition and achieving an ultra-wide output voltage range. The prototype of the proposed converter demonstrates good efficiency performance over the entire voltage range, with a peak efficiency of 97.5%.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Jianhui Meng, Xiaolong Wu, Tairan Ye, Jingsen Yu, Likang Gu, Zili Zhang, Yang Li
Summary: This article investigates an improved adaptive linear active disturbance rejection control to improve the output voltage response speed and reduce the voltage ripple of a high-power dc supply. It proposes a control strategy to adaptively adjust the duty cycle compensation and a hierarchical delay current sharing control strategy for multiple parallel-connected modules. The proposed method is verified by designing a high-power dc supply, and the results demonstrate its effectiveness in practical engineering applications.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Energy & Fuels
Bo Zhang, Jin Huang, Yongfeng Song, Xinbo Liu, Jiahui Ren, Chengwei Kang, Yingtao Ma, Shijie Sun, Lijun Diao
Summary: This paper studies the input-voltage and output-current equalization characteristics of a Boost + LLC modular ISOP converter based on the small-signal model. The experimental results show that the ISOP system composed of a Boost + LLC cascaded module has excellent voltage and current self-equalization performance.
Article
Engineering, Electrical & Electronic
Harish Karneddi, Deepak Ronanki
Summary: This letter proposes a new universal battery charger for electric vehicles with a range of output voltage from 48 to 450 V. It features a dual-loop distinct current controller that seamlessly switches between boost and buck operations to regulate the output voltage and maintain unity power factor at the grid side. It also incorporates an active harmonic minimization method to reduce prominent third-harmonic in the reference current and eliminate subharmonic oscillations. The proposed OBC's performance was validated through MATLAB simulations and experiments on a 1.5 kW laboratory prototype with a universal AC power supply, and compared with existing OBCs.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Automation & Control Systems
Yun Zhang, Qiangqiang Liu, Yongping Gao, Jing Li, Mark Sumner
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2019)
Article
Engineering, Electrical & Electronic
Yun Zhang, Heyu Liu, Jing Li, Mark Sumner, Changliang Xia
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2019)
Article
Engineering, Electrical & Electronic
Claudio Burgos-Mellado, Roberto Cardenas, Doris Saez, Alessandro Costabeber, Mark Sumner
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2019)
Article
Energy & Fuels
Ramy Georgious, Jorge Garcia, Mark Sumner, Sarah Saeed, Pablo Garcia
Article
Engineering, Electrical & Electronic
Yun Zhang, Heyu Liu, Jing Li, Mark Sumner
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2020)
Article
Engineering, Electrical & Electronic
Claudio Burgos-Mellado, Jacqueline J. Llanos, Roberto Cardenas, Doris Saez, Daniel E. Olivares, Mark Sumner, Alessandro Costabeber
IEEE TRANSACTIONS ON SMART GRID
(2020)
Article
Engineering, Electrical & Electronic
F. M. Aboshady, D. W. P. Thomas, Mark Sumner
IEEE TRANSACTIONS ON SMART GRID
(2020)
Article
Energy & Fuels
Mahmoud Elkazaz, Mark Sumner, Seksak Pholboon, Richard Davies, David Thomas
Article
Computer Science, Information Systems
Kamel Saleh, Mark Sumner
Article
Engineering, Electrical & Electronic
F. Alex Navas, Juan S. Gomez, Jacqueline Llanos, Erwin Rute, Doris Saez, Mark Sumner
Summary: The paper proposes a distributed model predictive control strategy based on a consensus strategy for improving the economic operation of microgrids. The controller can operate without knowledge of the microgrid's topology and is robust to load variations and communication issues.
IEEE TRANSACTIONS ON SMART GRID
(2021)
Article
Engineering, Electrical & Electronic
Alex Navas-Fonseca, Claudio Burgos-Mellado, Juan S. Gomez, Felipe Donoso, Luca Tarisciotti, Doris Saez, Roberto Cardenas, Mark Sumner
Summary: This paper introduces a distributed predictive secondary control strategy that utilizes single-phase reactive power control to share imbalance in AC Microgrids. The innovative approach includes an objective function and dynamic models as constraints, allowing control based on local measurements and neighboring generator information. The proposed distributed model predictive control scheme outperforms other solutions by directly sharing imbalance in terms of single-phase reactive power without adding extra power converters.
IEEE TRANSACTIONS ON SMART GRID
(2022)
Article
Computer Science, Information Systems
Kamel Saleh, Mark Sumner
Summary: This paper introduces three different algorithms for tracking saliency in seven-phase PMSM to achieve sensorless speed control. The algorithms measure the change of stator currents when different active vectors are implemented using NSV-SVPWM. A comparison between the algorithms in terms of THD is presented, showing that using long active vectors in NSV-SVPWM reduces current distortion. Simulation results analyze the effect of different active vectors on current THD and demonstrate the effectiveness of the proposed control technique post speed sensor failure.
Article
Engineering, Electrical & Electronic
Erwin Rute-Luengo, Alex Navas-Fonseca, Juan S. Gomez, Enrique Espina, Claudio Burgos-Mellado, Doris Saez, Mark Sumner, Diego Munoz-Carpintero
Summary: This article presents a novel scheme based on distributed model-based predictive control for the secondary level control of hybrid ac/dc microgrids. The scheme proposes prediction models based on droop control and power-transfer equations to characterize the generators in both the ac and dc sub-MGs, and power balance constraints are used to predict the behavior of interlinking converters. The proposed scheme is validated through experimental results in various scenarios, including load changes, frequency and voltage regulation, and communication malfunction.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Angel Pena-Quintal, Waseem El Sayed, Mark Sumner, Seda Ustun Ercan, Steve Greedy, Dave Thomas, Robert Smolenski
Summary: This article discusses the effects on nearby communication systems when spread spectrum modulation techniques are used for a dc-dc power converter. Spread spectrum modulation, widely used to comply with electromagnetic compatibility standards, can create harmful effects on the converter or the rest of the power network. Measurements are made to standardize an assessment procedure and evaluate the interference created by an SiC-based dc-dc converter in both frequency domain and serial communication disruption.
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY
(2023)
Article
Computer Science, Information Systems
Claudio Burgos-Mellado, Jacqueline Llanos, Enrique Espina, Doris Saez, Roberto Cardenas, Mark Sumner, Alan Watson