Article
Computer Science, Information Systems
Behnam Koushki, Praveen Jain, Alireza Bakhshai
Summary: A new topology and controller for bi-directional EV battery chargers based on single-stage AC-DC resonant converter is proposed. The topology is a Half-Bridge (HB)-Full-Bridge (FB) resonant converter with MOSFET's connected in series and in opposite direction, and an active filter on the DC-side. The use of an appropriate control scheme enables a wide range of power control under different voltage levels, and the absence of electrolytic capacitors increases the reliability of the converter. The controller allows Zero Voltage Switching (ZVS) for all switching instances, reducing conduction losses and improving efficiency, while the active filter absorbs low frequency current ripple to prevent it from affecting the battery and increasing its lifespan.
Article
Engineering, Electrical & Electronic
Navid Molavi, Mohammad Maghsoudi, Hosein Farzanehfard
Summary: This article introduces a quasi-resonant bridgeless power factor correction (PFC) converter with a single auxiliary switch to improve input current total harmonic distortion. It achieves a maximum voltage gain of four, reduces the size and value of passive components, and enables soft switching for main semiconductor elements without extra components. The operating modes, theoretical analysis, and design procedure for the proposed converter are discussed, and a 200 W, 160 kHz laboratory prototype is implemented for verification of theoretical analysis and effectiveness of the proposed topology.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Automation & Control Systems
Yimin Lu, Xuefei Wei, Xianfeng Huang, Zhihong Yin
Summary: This article investigates the dynamics of a power electronic circuit, specifically the PI control system of an LLC resonant dc-dc converter, by establishing an equivalent memristor model for the system. The study utilizes mathematical methods such as Floquet theory, bifurcation diagrams, and Poincare maps to analyze the system's behavior. The results confirm the presence of various nonlinear phenomena and increased uncertainty in the system due to changes in parameters. Understanding the dynamical characteristics of power electronics systems from the perspective of transient transition and multistability is crucial for ensuring safe and reliable operation.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Nicola Zaupa, Luis Martinez-Salamero, Carlos Olalla, Luca Zaccarian
Summary: This article describes parallel and series resonant converters and proposes a hybrid feedback system with self-oscillating behavior. The amplitude and frequency of the system can be adjusted by a reference input. Experimental results confirm the effectiveness of this method.
IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY
(2023)
Article
Energy & Fuels
Mohammad Alathamneh, Haneen Ghanayem, Xingyu Yang, R. M. Nelms
Summary: This article proposes a bidirectional real and reactive power control method for a three-phase grid-connected inverter under unbalanced grid conditions using a proportional-resonance controller. The proposed method balances the grid currents and point-of-common-coupling voltages, and controls the power injected into the grid, resulting in reduced oscillation in real and reactive power.
Article
Computer Science, Information Systems
Xiu Zhang, Baoxing Wang, Kai Fu, Rui Yue, Haojie Guo, Shuqi Li, Yong Cai
Summary: This work proposes a novel pulsating DC high-voltage linear driving scheme for GaN-based LED general lighting to save costs and reduce flicker. The superiority and practicality of this scheme in three-phase AC power grids were demonstrated for the first time. Linear driving of GaN LEDs for three-phase AC grids provides superior performance for general lighting, with a 90.7% DC component in the rectified voltage effectively alleviating flicker.
Article
Nanoscience & Nanotechnology
Varvara Zubyuk, Luca Carletti, Maxim Shcherbakov, Sergey Kruk
Summary: Optical materials are being revolutionized through nanotechnology, enabling the engineering of structures at scales smaller than the wavelength of light to provide new properties and functionalities. One important component of such materials is dielectric metasurfaces, which have shown mature research progress in linear interactions with moderate intensity light, while actively exploring new frontiers in nonlinear interactions with strong optical fields.
Article
Engineering, Electrical & Electronic
Andrew S. Wunderlich, Enrico Santi
Summary: This paper presents a novel closed-form implicit model for switched-mode power converters, which uses implicit integration but does not require an iterative numerical solving algorithm for evaluation because it is explicitly solved prior to model execution. The derived models accurately capture the large-signal dynamic behavior of the power converters and can be directly implemented in any computational environment, making them highly computationally efficient. Due to the lack of an iterative solver, these models have a predictable worst case execution time (WCET), making them suitable for real-time modeling applications such as hardware-in-the-loop simulation or digital twins. The paper also demonstrates the model derivation process and analyzes the computational expense, as well as discussing model error.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Pierpaolo Dini, Giorgio Ariaudo, Gianluca Botto, Francesco La Greca, Sergio Saponara
Summary: This paper proposes a resonant converter model that considers the thermal and electrical dynamics of the main components. In contrast to the current state-of-art, where model-based design approaches are implemented offline, the proposed model has low computational complexity and can be simulated in real-time. This real-time electro-thermal model enables the design of a predictive control algorithm to optimize the current control of a SiC-based resonant converter by considering both the thermal and electrical operating limits. Validation of the interaction between the converter model and the predictive control algorithm is proposed through real-time processor-in-the-loop, applied to the on-board charger for a high-voltage Li-ion battery pack, typical of modern fully electrified vehicles.
IET POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Elias Oggier, German G. Oggier, Fernando Botteron, Guillermo O. Garcia
Summary: This article proposes a closed-form solution for designing digital proportional-resonant controllers applied to three-phase four-leg (TP4L) inverters to achieve harmonic compensation. It presents a sequential procedure that uses closed-form expressions to establish the harmonic frequencies at which resonant stages must be added, eliminating the need for a trial-and-error process. Experimental results validate the proposed design using a 5-kVA four-leg inverter, feeding balanced, unbalanced, linear, and nonlinear loads.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2023)
Article
Green & Sustainable Science & Technology
Naser Vosoughi Kurdkandi, Milad Ghavipanjeh Marangalu, Peyman Alavi, Amirreza Zarrin Gharehkoushan, Saeed Rahimpour, Md Rabiul Islam, Kashem M. Muttaqi
Summary: Due to concerns about air pollution, global warming, and the limitations of fossil fuels, renewable energy sources such as photovoltaic applications are being widely integrated into power generation systems worldwide. This study proposes a new switched-capacitor-based transformer-less grid-tied inverter, which utilizes a series-parallel switching technique to achieve voltage boosting capability and implements a common ground technique for high overall efficiency and leakage current elimination. The inverter provides multi-level output voltage, reducing total harmonic distortion of the injected grid current, and incorporates a control strategy for controlling both active and reactive powers. A laboratory prototype of the proposed inverter is assembled and experimental results are analyzed to evaluate its performance.
IET RENEWABLE POWER GENERATION
(2023)
Article
Engineering, Electrical & Electronic
Remco W. T. Bonten, Jan M. Schellekens, Bas J. D. Vermulst, Frank M. Clermonts, Henk Huisman
Summary: This article presents a new control method to optimize the dynamic behavior of the bidirectional series-resonant converter. The method achieves bidirectional operation and zero-voltage switching of all switches by describing all switching events as a function of the charge difference across the resonant capacitor. This control method minimizes reactive currents under different operating conditions.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Rafal Kopacz, Michal Harasimczuk, Przemyslaw Trochimiuk, Grzegorz Wrona, Jacek Rabkowski
Summary: This article presents a novel control method for a multilevel dc-dc flying capacitor converter for applications in medium voltage range. The proposed control combines the advantages of low flying capacitance, zero voltage switching, and higher frequency operation, resulting in high efficiency and power density.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Grzegorz Iwanski, Sebastian Wodyk, Tomasz Luszczyk
Summary: The article presents a new approach to control the positive and negative sequence current vector of a grid-connected power electronic converter, which utilizes a new representation of unbalanced current in a new coordinate frame.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Grzegorz Iwanski, Pawel Maciejewski, Tomasz Luszczyk
Summary: This article introduces a new nonlinear transformation method that represents unbalanced three-phase signals as vectors with constant components, allowing the control system of a power electronic converter to implement proportional-integral controllers more simply without the need for complex and non-intuitive feedback structures.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
