Article
Engineering, Electrical & Electronic
Cheng Wang, Shaoqiang Hu, He Peng, Liqun He, Shengfang Fan
Summary: This article presents a dual-T-type modular multilevel converter (TMMC) composed of stackable ac-dc-ac power cells. The hybrid legs make the system feature less switching semiconductors and flexible leg reusing. The proposed modulation coordinated method achieves inner-cell and intercell voltage balancing, and the simulation and experiment results verify the effectiveness of the proposed topology and strategy.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)
Article
Automation & Control Systems
Hongqi Ding, Fujun Ma, Rong Han, Lei Wang, Man-Chung Wong
Summary: This article proposes a control method to achieve thermal distribution balance between top and bottom devices, successfully reducing temperature differences and increasing system lifetime.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Rodrigo Cuzmar, Andres Montenegro, Andres Mora, Javier Pereda, Ricardo P. Aguilera
Summary: This article presents a circulating current reference generator based on a constrained model predictive control approach for balancing the intercluster capacitor voltage in modular multilevel matrix converters. The proposed strategy has been validated through experimental results, demonstrating its effectiveness and high-quality performance.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Lianqiang Wang, Li Zhang, Yongsheng Xiong, Zhuang Kang
Summary: This article proposes a multipoint SM OC fault diagnosis strategy under a low modulation index, which includes fault detection and fault location. The detection is achieved by improving the existing sliding-mode observer to quickly detect the faulty arm and fault type. The location is achieved by recovering the arm current and differentiating the SM capacitor-voltage data. The proposed strategy can quickly and accurately diagnose the OC faults of SM under a low modulation index, and it has fault tolerance and stability.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Haozhe Jin, Wu Chen, Yeyuan Xie, Liangcai Shu, Yutao Xu
Summary: This article proposes an optimized asymmetric trapezoidal wave (ATW) modulation scheme for a modular multilevel resonant dc/dc converter (MMRDC) to reduce current stress over wide load and voltage ranges. The optimized operating point of MMRDC is derived based on the soft switching characteristic and reactive current analysis, considering low current stress and zero voltage switching constraint. The experimental results on a 4 kW MMRDC prototype verify the correctness and effectiveness of the analysis and the optimized ATW modulation scheme.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Energy & Fuels
Liangzi Li, Kaiqi Sun, Zhijie Liu, Wenning Wang, Ke-Jun Li
Summary: This article introduces the application of DC distribution system in enhancing urban power grid efficiency and environmental-friendliness. It also analyzes the limitations of the three-port-isolated modular multilevel converter (I-(MC)-C-2) in bipolar LVDC application. To solve the bipolar imbalance problem, a novel balance control method is proposed based on decoupling the MV power control and the LV bipolar power compensation control.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Shiyuan Fan, Xin Xiang, Jing Sheng, Yunjie Gu, Huan Yang, Wuhua Gae Li, Xiangning He, Tim C. Green
Summary: This article extends the inherent balance concept previously shown for square-wave modulation to a multilevel version for MMDCs. By introducing a switching duty matrix, the inherent voltage balance is ensured. The study develops a generalized coprime criterion based on circulant matrix theory and verifies the effectiveness of the proposed circulant modulation through simulations and experiments in achieving SM voltage balance in an MMDC.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Chao Wang, Zedong Zheng, Kui Wang, Yongdong Li
Summary: This article analyzes the behavior of the modular multilevel matrix converter (M3C) under open-circuit faults and proposes a suitable fault detection criterion for the M3C. It also proposes a modified fault-tolerant control process and a method to obtain the actual maximum intrinsic errors (AMIEs) of the observers. Experimental results validate the effectiveness of the proposed methods.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Abdul Moeed Amjad, Kamyar Mehran, Shady Gadoue, Frede Blaabjerg
Summary: This paper proposes a novel online technique named DE-NR that combines the global search ability of DE and the rapid convergence of NR methods to solve complex harmonic elimination problems. The method efficiently computes switching angles online to control harmonics and distortion. Experimental and simulation results demonstrate that DE-NR method outperforms other methods in harmonic control and rapid convergence.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2021)
Article
Engineering, Electrical & Electronic
Gabriel Avila Saccol, Kaio Vinicius Vilera, Fernanda de Morais Carnielutti, Cassiano Rech
Summary: This article proposes a generalized space vector modulation for single-phase cascaded H-bridge converters, which considers the power processed by each power module and maintains a low total harmonic distortion (THD) multilevel output voltage waveform. The proposed method improves the converter output voltage harmonic spectrum compared to the conventional phase-shifted modulation strategy in cases of power imbalance among modules. Experimental results are included to demonstrate the performance of the proposed method.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2023)
Article
Automation & Control Systems
Zhen Wang, Li Peng
Summary: An arm current reshaping-based method is proposed in this article to suppress the capacitor overvoltage under submodule open-circuit fault in modular multilevel converters (MMCs). By reshaping the arm currents and injecting common-mode voltage, the degree of submodule overvoltage can be alleviated effectively.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Energy & Fuels
Yang Chen, Jinggang Yang, Yang Xu, Chuanchuan Hou, Ke Zhao, Jianjun Ma, Miao Zhu
Summary: AC & DC hybrid power grid is an important trend in renewable energy systems, and the power electronic transformer plays a crucial role in the conversion and transmission of renewable energy. Existing topologies have drawbacks such as large volume and complex control. The TP-MMC, with a compact structure and multiple AC and DC ports, provides a solution for the interconnection of AC and DC power grids. The proposed voltage source control strategy in this paper enhances the inertial and self-synchronous ability of the AC port in TP=MMC, allowing flexible control of active and reactive power.
Article
Computer Science, Information Systems
Milan Utvic, Philippe Bontemps, Drazen Dujic
Summary: Modular multilevel matrix converter is a converter used for medium-voltage ac-ac power conversion. This paper extends the direct arm energy control concept to the modular multilevel matrix converter, presenting an intuitive and simple control approach with the ability to control the arm energies to arbitrary values, and ensuring stable operation under all conditions.
Article
Automation & Control Systems
Tianxiang Yin, Lei Lin, Chen Xu, Donghai Zhu, Kaiyuan Jing
Summary: This article proposes a hybrid modular multilevel converter (MMC) topology based on SiC mosfet and Si IGBT. By improving the modulation scheme and introducing a specialized voltage balancing scheme, the performance of the system is enhanced. Simulation and experimental results demonstrate the feasibility of the hybrid MMC and its superiority in terms of cost, loss, and feasibility compared to others.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Zhijie Liu, Ke-Jun Li, Zhonglin Guo, Jinyu Wang, Jianhang Qian
Summary: This article focuses on evaluating the over-modulation risk of modular multilevel converters (MMCs). It proposes a new concept called dynamic modulation ratio (DMR) to accurately reflect the modulation characteristics, as the conventional modulation ratio (CMR) is found to be inaccurate for MMCs. Quantitative comparisons show that the DMR-based evaluation method is consistently accurate in all situations.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Noman Ahmed, Lennart Angquist, Shahid Mahmood, Antonios Antonopoulos, Lennart Harnefors, Staffan Norrga, Hans-Peter Nee
IEEE TRANSACTIONS ON POWER DELIVERY
(2015)
Article
Engineering, Electrical & Electronic
Antonios Antonopoulos, Lennart Angquist, Lennart Harnefors, Hans-Peter Nee
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2015)
Article
Engineering, Electrical & Electronic
Kalle Ilves, Franz Taffner, Staffan Norrga, Antonios Antonopoulos, Lennart Harnefors, Hans-Peter Nee
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2015)
Article
Engineering, Electrical & Electronic
Lennart Harnefors, Antonios Antonopoulos, Kalle Ilves, Hans-Peter Nee
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2015)
Article
Engineering, Electrical & Electronic
Luc-Andre Gregoire, Handy Fortin Blanchette, Wei Li, Antonios Antonopoulos, Lennart Angquist, Kamal Al-Haddad
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2015)
Article
Automation & Control Systems
Antonios Antonopoulos, Lennart Angquist, Lennart Harnefors, Kalle Ilves, Hans-Peter Nee
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2014)
Article
Engineering, Multidisciplinary
Antonios Antonopoulos, Lennart Angquist, Staffan Norrga, Kalle Ilves, Lennart Harnefors, Hans-Peter Nee
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2014)
Article
Engineering, Electrical & Electronic
Magnar Hernes, Salvatore D'Arco, Antonios Antonopoulos, Dimosthenis Peftitsis
Summary: This study presents experimental results on power cycling tests of high-power Insulated Gate Bipolar Transistors modules subjected to low temperature stress cycles, showcasing accelerated aging closer to real application conditions. Post-mortem failure analysis and fitting the lifetime model with experimental data were used to assess the model's validity under low temperature stress cycles. Challenges and limitations in data fitting to the lifetime model and the impact of stress parameters on anticipated failure are also discussed.
IET POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Antonios Antonopoulos, Salvatore D'Arco, Magnar Hernes, Dimosthenis Peftitsis
Summary: This article points out the uncertainties in applying a lifetime model to stress patterns deriving from field applications, discussing typical sources of errors and how severely they may impact lifetime estimation.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Proceedings Paper
Energy & Fuels
Theofilos Papadopoulos, Antonios Antonopoulos
Summary: This study investigates modifications to inductance formulas for square-shaped planar windings to make them applicable to rectangle-shaped windings. It also introduces an algorithm for estimating applied voltage per turn, which can lead to design optimization. The study compares theoretical, simulation, and experimental results for evaluating these modifications.
2021 23RD EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'21 ECCE EUROPE)
(2021)
Proceedings Paper
Energy & Fuels
Antonios Antonopoulos, Salvatore D'Arco, Magnar Hernes, Dimosthenis Peftitsis
THIRTY-FOURTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2019)
(2019)
Proceedings Paper
Energy & Fuels
Kalle Lives, Yuhei Okazaki, Nan Chen, Muhammad Nawaz, Antonios Antonopoulos
2018 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-NIIGATA 2018 -ECCE ASIA)
(2018)
Proceedings Paper
Energy & Fuels
Andreas Zafeiropoulos, Antonios Antonopoulos, Jan R. Svensson
2017 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)
(2017)
Proceedings Paper
Automation & Control Systems
Noman Ahmed, Lennart Angquist, Antonios Antonopoulos, Lennart Harnefors, Staffan Norrga, Hans-Peter Nee
IECON 2015 - 41ST ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY
(2015)
Proceedings Paper
Crystallography
H. -P. Nee, J. Rabkowski, D. Peftitsis, G. Tolstoy, J. Colmenares, D. Sadik, M. Bakowski, J. -K. Lim, A. Antonopoulos, L. Angquist, M. Zdanowski
SILICON CARBIDE AND RELATED MATERIALS 2013, PTS 1 AND 2
(2014)
