IEEE Open Journal of Industry Applications最新文献

{"title":"Wide Range Voltage Scaling Converter With Extended Duty and Low Voltage Stress for a DC Microgrid Applications","authors":"Md Samiullah;Mohammed Al-Hitmi;Ali T. Al Awami;Shirazul Islam;Atif Iqbal","doi":"10.1109/OJIA.2025.3555529","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3555529","url":null,"abstract":"DC–DC converters hold immense importance due to their diverse applications, making it critical to design them in accordance with the demanding operational requirements. Conventional boost converters face significant challenges at high voltage levels, requiring excessively high duty cycles that lead to increased component stress, switching transients and losses, electromagnetic interference (EMI), and diode reverse recovery issues. This article presents the design of a new voltage scaling converter with applications in high-voltage scenarios, such as the integration of solar photovoltaic (PV) systems into a high-voltage dc bus within a microgrid. The proposed converter features an extendable design and flexible control, enabled by the incorporation of dual duty cycles, allowing for a broader range of operational flexibility. The converter simultaneously achieves high voltage gain, reduced component stress, continuous input current, high power density, and a wide range of feasible duty ratios. The utilization of multiple passive elements is analytically verified by studying variations in parameters, such as the presence of inductors with different values. Finally, the converter's performance is validated through experiments conducted on a 600 W prototype operating at a frequency of 50 kHz. In addition, the closed-loop operation of the converter is validated by its ability to maintain a regulated 400 V dc bus voltage, despite variations in the input voltage.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"162-177"},"PeriodicalIF":7.9,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10944579","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Single-Stage Single-Phase Isolated Full-Bridge Buck–Boost DC–AC Inverters","authors":"Usman Ali Khan;Ashraf Ali Khan;Jung-Wook Park","doi":"10.1109/OJIA.2025.3554485","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3554485","url":null,"abstract":"This article presents a simple high-frequency transformer (HFT) isolated buck–boost inverter designed for single-phase applications. The proposed HFT isolated inverter, with its full-bridge buck–boost topology, provides a wider voltage regulation range. It can efficiently step up or step down the input voltage to achieve the desired output ac voltage. It provides galvanic isolation between the input and output sides. This feature ensures safety and compatibility with applications that require isolation, such as renewable energy systems and electric vehicle charging. It utilizes a solitary output inductor, an HFT for isolation, and ensures that only one switch is switching at a high frequency at a time. This novel inverter design obviates the requirements for a 50/60 Hz low-frequency transformer, consequently enhancing the power density. To validate the theoretical findings, an experimental prototype of the proposed inverter with output voltage ac voltage of peak 155.5 V, line frequency 60 Hz, and an output power of 0.5 kW is implemented. Extensive experimental tests are conducted under various operating conditions. The experimental results validate the theoretical analysis and confirm the practical viability and effectiveness of the proposed topology.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"148-161"},"PeriodicalIF":7.9,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10938598","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rapid Magnetic, Thermal, and Structural Scaling of Synchronous Machines Based on Flux and Loss Maps","authors":"Simone Ferrari;Gaetano Dilevrano;Paolo Ragazzo;Gianmario Pellegrino;Timothy Burress","doi":"10.1109/OJIA.2025.3545475","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3545475","url":null,"abstract":"In this article, we introduce a rapid and accurate method for scaling permanent magnet synchronous machines using flux linkage and loss maps. The method enables the design and comprehensive characterization of scaled machines to meet new specifications for peak torque, power, maximum operating speed, voltage, and current requirements without the need for finite-element simulations. The efficiency map of the scaled machine can be computed with negligible computational effort. The analysis encompasses the scaling of the liquid cooling jacket setup and evaluates the continuous stall torque of the final machine. Furthermore, the method addresses scaling rules for demagnetization current limits, peak short-circuit currents and uncontrolled generator voltages, allowing the evaluation of the safest shut-down strategy against the different fault scenarios. The use of the stack length versus number of turns selection plane facilitates the visualization of the key performance figures and the minimization of the stack length while adhering to inverter voltage and current constraints. Overall, this scaling method offers a streamlined approach to the preliminary design of e-motors and facilitates system-level optimization studies. The method is showcased by scaling the e-motor of the BMW i3 to meet the specifications of the moto-generator 2 of the 4th generation Toyota Prius.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"137-147"},"PeriodicalIF":7.9,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10902191","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Family of Transformerless Boost Converters for Pulsed Electrolysis","authors":"Hossein Gholizadeh;Mojtaba Hajihosseini;Saman A. Gorji","doi":"10.1109/OJIA.2025.3541720","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3541720","url":null,"abstract":"This article introduces a family of nonisolated dc–dc converters designed to amplify lower dc voltages to higher levels. These converters are particularly suitable for use in the dc link of pulse converters in hydrogen electrolyzers. The primary structure serves as a base for additional configurations with greater voltage amplification and reduced component stress. Two supplementary categories are examined based on the main structure, offering improved functionalities, and decreased pressures. The proposed topologies' specific parameters are evaluated in both ideal and nonideal operating scenarios. In addition, thorough comparisons are made among the converters from various perspectives. These topologies feature a single switch and minimal voltage stress, which provides a significant advantage in high-voltage scenarios by limiting the number of switches and their associated stresses. This study achieves a notable increase in voltage amplification without relying on high-frequency transformers, resulting in increased power density and reduced volume and mass. To validate the proposed designs, experimental findings are provided and compared with theoretical predictions.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"120-136"},"PeriodicalIF":7.9,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10884882","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143521493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High Speed Synchronous Machines: Technologies and Limits","authors":"Mauro Di Nardo;Gianvito Gallicchio;Francesco Cupertino;Marco Palmieri;Mohammad Reza Ilkhani;Michele Degano;Chris Gerada","doi":"10.1109/OJIA.2025.3531227","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3531227","url":null,"abstract":"This article presents a comprehensive comparison of high-speed synchronous machines, encompassing synchronous reluctance, its permanent magnet variant, and surface permanent magnet synchronous motors. The evaluation of their maximum performance capabilities employs a hybrid analytical-finite element design procedure able to address electromagnetic, thermal, and structural requirements simultaneously. Indeed, the adopted design methodology takes into account all the machines nonlinearities, while also including the limitations introduced by the iron ribs of the reluctance machine, retaining sleeve of the surface permanent magnet machine and increasing iron losses. The aim of the outlined design exercise is to evaluate the effect of different design specifications on the maximum achievable performance of the three machine topologies. A wide range of maximum design speeds, airgap thicknesses, and cooling system capabilities has been assessed showing when and why one motor type outperforms the others. The cooling system capability increment required by the reluctance-based machines to achieve the performance of the surface permanent magnet one has been systematically quantified. The design assumptions have been verified by a thermal analysis supporting the final machine selection. Three different machines designed with a maximum speed of 80 kr/min have been prototyped and tested on an instrumented test rig, validating all the design considerations.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"93-106"},"PeriodicalIF":7.9,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10844533","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Power Decoupling Methods for Grid Support Provided by Ultra-Fast Bidirectional Chargers","authors":"Alessandro Roveri;Vincenzo Mallemaci;Fabio Mandrile;Radu Bojoi","doi":"10.1109/OJIA.2025.3529042","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3529042","url":null,"abstract":"The installation of ultra-fast dc charging infrastructures is rapidly increasing worldwide in response to the exponential growing trend of electric vehicle (EV) market. Due to their discontinuous and unpredictable high power absorption, ultra-fast dc chargers pose a challenge for the power system stability. However, their negative impact on the grid operation can be mitigated by making them bidirectional, leveraging the energy stored in EV batteries or in the installed separate storage. Therefore, the power system can exploit this amount of energy to deal with unexpected grid large power imbalances. Moreover, ultra-fast dc chargers can contribute to power system stability by embedding virtual synchronous machine (VSM) algorithms into their ac/dc stage, i.e., the active front-end (AFE) converter unit. The charging station is thus enabled to provide grid services normally in charge of traditional synchronous generators, such as inertial behavior and short circuit current injection during faults to trigger line protections. However, the provision of inertial active power involves a non-negligible reactive power contribution due to the active-reactive power coupling, thus increasing the output current of the converter. Nevertheless, the power coupling also affects the grid support during faults. Indeed, when the AFE injects a short circuit current into the grid, a fluctuating active power can propagate from the grid to the EVs, resulting in a potential cause of degradation for the EV batteries. Therefore, this article proposes a feedforward-based decoupling solution to guarantee the complete active–reactive power dynamic decoupling while the AFE of an ultra-fast dc charger is providing grid support. Moreover, the proposed method ensures a full-decoupled dynamic response also in case of power references variation during the normal EV charging operation. The proposed decoupling algorithm is experimentally validated on a down-scaled 15 kVA two-level three-phase inverter, emulating the AFE of the ultra-fast dc charger.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"107-119"},"PeriodicalIF":7.9,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10840203","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"IEEE Industry Applications Society Information","authors":"","doi":"10.1109/OJIA.2024.3511055","DOIUrl":"https://doi.org/10.1109/OJIA.2024.3511055","url":null,"abstract":"","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"C2-C2"},"PeriodicalIF":7.9,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10841414","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advanced Online State-of-Health Prediction and Monitoring of Na-Ion Battery for Electric Vehicles Application","authors":"D. Pelosi;L. Trombetti;F. Gallorini;P. A. Ottaviano;L. Barelli","doi":"10.1109/OJIA.2025.3527721","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3527721","url":null,"abstract":"Na-ion batteries are growing interest due to their sustainability and low cost. A wide implementation in stationary applications, but also for short range transportation, is envisaged. This is further supported by the recent progress on Na-ion cells with increased energy density. To this regards, the development of procedures for real-time assessment of batteries state of health is of crucial relevance. The present paper provides an innovative procedure to assess sodium-ion battery capacity fading based on the application of discrete wavelet transform to voltage signals, acquired once a certain load pattern is applied at the battery terminals. The procedure development is provided through Na-ion cell aging test. During all the test battery capacity measurements are carried out. Root mean square error (RMSE) between assessed and measured values equals 1.18%. Moreover, during the aging test significant differences between performance evolution of Na-ion and NCR Li-ion cells are highlighted and discussed.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"59-68"},"PeriodicalIF":7.9,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10834587","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143105654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Continuous Sliding Mode Current Control Based on the Sensitivity Theory for PMSM Drives","authors":"Elia Brescia;Massimo Tipaldi;Francesco Torelli;Paolo Roberto Massenio;Luigi Pio Savastio;Giuseppe Leonardo Cascella;Enrico De Tuglie","doi":"10.1109/OJIA.2025.3526628","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3526628","url":null,"abstract":"Sliding mode controllers (SMCs) are commonly used in permanent-magnet synchronous machines (PMSMs) for current control due to their robustness and simplicity. However, high gains used in traditional discontinuous SMC implementations can induce chattering. To address this, disturbance observers are employed to maintain robustness without resorting to high gains. This article introduces a novel continuous asymptotic SMC method for PMSM currents that avoids the need for disturbance observers, resulting in reduced complexity and tuning efforts. The control laws of the two <inline-formula><tex-math>$dq$</tex-math></inline-formula>-axes currents are obtained through the sensitivity of the tracking errors with respect to the controller outputs. The robustness and convergence properties of the proposed control laws are theoretically studied using the Lyapunov approach. Numerical simulations are used to evaluate the performance and robustness of the proposed controller, followed by experiments to compare it to a discontinuous terminal SMC with and without a disturbance observer. The results clearly demonstrate the superiority of the proposed controller that ensures fast convergence, low chattering, and high robustness to parameter variations without requiring the design of additional disturbance observers.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"48-58"},"PeriodicalIF":7.9,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10830512","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143105670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Disturbance Robust Generalized Predictive Control Applied to an EV Charger Grid Converter","authors":"Jefferson S. Costa;Angelo Lunard;Luís F. Normandia Lourenço;Lucas Rodrigues;Alfeu J. Sguarezi Filho","doi":"10.1109/OJIA.2025.3525771","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3525771","url":null,"abstract":"Electric vehicles (EVs) are the best solution to tackle the critical challenge of reducing carbon emissions in the transportation sector. However, the widespread adoption of EVs relies on advancing fast-charging infrastructure technology. This includes overcoming challenges related to operating under disturbed conditions, which can impact the stability of the internal control loop. This article presents a method for robustly tuning a generalized predictive control (GPC) for an EV charger grid converter. This approach aims to enhance its performance in the face of disturbances in the grid voltage and internal filter parameters. One significant scientific gap in applying GPC in grid-tied converters concerns systematic tuning. This article addresses this gap by explicitly analyzing the impact of tuning on the stability and robustness of the GPC controller. The concept of robust stability margin, derived from singular value decomposition, is used for this purpose. Experimental results obtained from an EV charger prototype validated the tuning proposal aimed at maximizing the robustness and performance of the grid converter. The tests with different internal filters guaranteed a performance level within the defined error band. Furthermore, experimental tests have shown that the proposed controller is more robust than conventional MPC.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"69-78"},"PeriodicalIF":7.9,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10824861","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143105655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}