Pub Date : 2025-09-19DOI: 10.1109/TIA.2025.3607590
{"title":"IEEE Transactions on Industry Applications Publication Information","authors":"","doi":"10.1109/TIA.2025.3607590","DOIUrl":"https://doi.org/10.1109/TIA.2025.3607590","url":null,"abstract":"","PeriodicalId":13337,"journal":{"name":"IEEE Transactions on Industry Applications","volume":"61 6","pages":"C3-C3"},"PeriodicalIF":4.5,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11173878","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145090187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-03DOI: 10.1109/TIA.2025.3605899
V. Fajardo Latorre;G. Alonso Orcajo;José M. Cano;Joaquín G. Norniella;Francisco Pedrayes G.;Carlos H. Rojas
Integrating renewable energy sources, especially photovoltaic, into the distribution networks supplying steelworks offers a significant opportunity to decrease reliance on fossil fuels. However, the inherent intermittency of these energy sources, combined with the lack of inertia due to the use of electronic converters, poses significant challenges to the stability of the electrical system. This study aims to analyze the impact of large loads, such as electric arc furnaces, which experience considerable fluctuations in power demand, on frequency control in networks with high photovoltaic penetration. The analysis was conducted on networks with synchronous generation systems and varying levels of photovoltaic penetration. The system response is shaped by critical parameters such as the displacement factor, shortcircuit impedance, harmonic and interharmonic injection, the rate of power demand variation, equivalent inertia, and governor gain. Effectively managing these variables is crucial for improving performance and minimizing frequency deviations. The analysis is based on measurements obtained from an operational steel plant, which served both to calibrate the simulation models and to validate selected outcomes.
{"title":"Effect of Photovoltaic Generation on Frequency Stability in Steelworks With Electric Arc Furnaces","authors":"V. Fajardo Latorre;G. Alonso Orcajo;José M. Cano;Joaquín G. Norniella;Francisco Pedrayes G.;Carlos H. Rojas","doi":"10.1109/TIA.2025.3605899","DOIUrl":"https://doi.org/10.1109/TIA.2025.3605899","url":null,"abstract":"Integrating renewable energy sources, especially photovoltaic, into the distribution networks supplying steelworks offers a significant opportunity to decrease reliance on fossil fuels. However, the inherent intermittency of these energy sources, combined with the lack of inertia due to the use of electronic converters, poses significant challenges to the stability of the electrical system. This study aims to analyze the impact of large loads, such as electric arc furnaces, which experience considerable fluctuations in power demand, on frequency control in networks with high photovoltaic penetration. The analysis was conducted on networks with synchronous generation systems and varying levels of photovoltaic penetration. The system response is shaped by critical parameters such as the displacement factor, shortcircuit impedance, harmonic and interharmonic injection, the rate of power demand variation, equivalent inertia, and governor gain. Effectively managing these variables is crucial for improving performance and minimizing frequency deviations. The analysis is based on measurements obtained from an operational steel plant, which served both to calibrate the simulation models and to validate selected outcomes.","PeriodicalId":13337,"journal":{"name":"IEEE Transactions on Industry Applications","volume":"62 2","pages":"2490-2501"},"PeriodicalIF":4.5,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11150582","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Online stator resistance estimation in induction motors is essential for flux and torque estimation, thermal monitoring, and efficiency analysis in high-performance drives. Although direct current (dc) injection is effective, it causes torque and speed oscillations that may compromise stability. Conventional mitigation strategies rely on current control bandwidth and additional loops, which increase computational complexity and are generally restricted to PWM-based schemes. This paper proposes an adaptive resonant controller in the speed control loop that reduces computational demand while effectively suppressing torque oscillations. The method is applicable to both PWM and hysteresis-based current control implementations. The proposed scheme is validated through PLECS simulations, c-HIL tests, and experiments on a five-level NPC-type G-based induction motor drive. The results highlight the reduced complexity and improved torque oscillation mitigation achieved by the proposed approach compared to existing methods.
{"title":"A Proportional Resonant Controller-Based Mitigation Scheme for Torque Oscillations Caused by dc Injection Methods in Induction Motor Drives","authors":"Thallysson Henrique Marques Magalhães;Daniel Franco Leal;Marcelo Martins Stopa;Allan Fagner Cupertino","doi":"10.1109/TIA.2025.3605308","DOIUrl":"https://doi.org/10.1109/TIA.2025.3605308","url":null,"abstract":"Online stator resistance estimation in induction motors is essential for flux and torque estimation, thermal monitoring, and efficiency analysis in high-performance drives. Although direct current (dc) injection is effective, it causes torque and speed oscillations that may compromise stability. Conventional mitigation strategies rely on current control bandwidth and additional loops, which increase computational complexity and are generally restricted to PWM-based schemes. This paper proposes an adaptive resonant controller in the speed control loop that reduces computational demand while effectively suppressing torque oscillations. The method is applicable to both PWM and hysteresis-based current control implementations. The proposed scheme is validated through PLECS simulations, c-HIL tests, and experiments on a five-level NPC-type G-based induction motor drive. The results highlight the reduced complexity and improved torque oscillation mitigation achieved by the proposed approach compared to existing methods.","PeriodicalId":13337,"journal":{"name":"IEEE Transactions on Industry Applications","volume":"62 2","pages":"2478-2489"},"PeriodicalIF":4.5,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11146892","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This article proposes an 800 to 14 V bidirectional DC-DC converter architecture for Electric Vehicle (EV) applications. This architecture is conducive to have high efficiency at light loads and miniaturized size by means of using low-voltage power electronic devices and a new integrated magnetic design. The prototype achieves an efficiency of 93.5% at 10% load and a peak efficiency of 95%, with a power density of 9.18 kW/L.
{"title":"Design of High Light-load Efficiency Two Stage Bidirectional 800V-14V Converter","authors":"Jinfeng Zhang;Xufu Ren;Zhenshuai Rong;Junwen Zhang;Weiwei Lu;Pengcheng Xu;Wei Mu;Jiayu Li;Liang Wang;Teng Long","doi":"10.1109/TIA.2025.3603753","DOIUrl":"https://doi.org/10.1109/TIA.2025.3603753","url":null,"abstract":"This article proposes an 800 to 14 V bidirectional DC-DC converter architecture for Electric Vehicle (EV) applications. This architecture is conducive to have high efficiency at light loads and miniaturized size by means of using low-voltage power electronic devices and a new integrated magnetic design. The prototype achieves an efficiency of 93.5% at 10% load and a peak efficiency of 95%, with a power density of 9.18 kW/L.","PeriodicalId":13337,"journal":{"name":"IEEE Transactions on Industry Applications","volume":"62 1","pages":"1724-1735"},"PeriodicalIF":4.5,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146006907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Two-stage isolated bidirectional DC/DC converter with LLC-DCX cascaded with Buck converter is suitable for wide voltage range applications. Multiple converters with input parallel output series (IPOS) connection can further extend the output voltage range and power rating of the system. However, conventional series connection of the synchronous rectifiers of the Buck converters will exacerbate common- mode (CM) noise. This paper analyzes the CM noise characteristics and reveals the mechanism which worsens the CM noise of the converter. The loss of the stable reference ground for the CM noise source due to the series connection of the synchronous rectifiers is the reason. To reduce the additional CM noise induced by the IPOS connection, the impedance balance method with modified coupled inductor is presented. Furthermore, an improved topology is proposed by modifying the position of the filter inductor. Modeling and analysis indicate that the CM noise is reduced by providing a stable reference ground for each noise source with the modified topology. Effectiveness and feasibility of the proposed method are verified with experimental results.
{"title":"IPOS Two-Stage Isolated Bidirectional DC/DC Converter With Low Common-Mode Noise","authors":"Meng Song;Hai Nie;Tao Liu;Suxin Qin;Yan Xing;Hongfei Wu","doi":"10.1109/TIA.2025.3603531","DOIUrl":"https://doi.org/10.1109/TIA.2025.3603531","url":null,"abstract":"Two-stage isolated bidirectional DC/DC converter with LLC-DCX cascaded with Buck converter is suitable for wide voltage range applications. Multiple converters with input parallel output series (IPOS) connection can further extend the output voltage range and power rating of the system. However, conventional series connection of the synchronous rectifiers of the Buck converters will exacerbate common- mode (CM) noise. This paper analyzes the CM noise characteristics and reveals the mechanism which worsens the CM noise of the converter. The loss of the stable reference ground for the CM noise source due to the series connection of the synchronous rectifiers is the reason. To reduce the additional CM noise induced by the IPOS connection, the impedance balance method with modified coupled inductor is presented. Furthermore, an improved topology is proposed by modifying the position of the filter inductor. Modeling and analysis indicate that the CM noise is reduced by providing a stable reference ground for each noise source with the modified topology. Effectiveness and feasibility of the proposed method are verified with experimental results.","PeriodicalId":13337,"journal":{"name":"IEEE Transactions on Industry Applications","volume":"62 1","pages":"1693-1703"},"PeriodicalIF":4.5,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146006878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-27DOI: 10.1109/TIA.2025.3603517
Donghao Tian;Yu Tang;Zhe Zhang
Isolated bidirectional resonant converters play a key role in the field of electric vehicle charging and discharging. However, due to the presence of multiple magnetic components in the circuit, the improvement of power density is limited. In order to solve this problem, this paper proposes a magnetic integration scheme for high-power bidirectional CLLLC resonant converters, which is an energy-based leakage inductance evaluation strategy. An integrated magnetic (IM) component replaces the original multiple discrete magnetic (DM) components to improve the power density of the converter. Secondly, in order to meet the actual application scenarios, a design method for a high-reliability CLLLC converter with an ultra-wide voltage range is proposed. Third, the rationality of the magnetic integration design is verified by finite element analysis software. Finally, the effectiveness of the proposed magnetic integration technology and design method is demonstrated through an experimental prototype with an input of 660 V-860 V, an output of 250 V-500 V, and a power of 30 kW.
隔离式双向谐振变换器在电动汽车充放电领域起着关键作用。然而，由于电路中存在多个磁性元件，功率密度的提高受到限制。为了解决这一问题，本文提出了一种大功率双向CLLLC谐振变换器的磁集成方案，即基于能量的漏感评估策略。集成磁性元件（IM）取代了原来的多个离散磁性元件（DM），提高了变换器的功率密度。其次，为了满足实际应用场景，提出了一种超宽电压范围的高可靠性CLLLC变换器的设计方法。第三，通过有限元分析软件验证了磁一体化设计的合理性。最后，通过输入为660 V ~ 860 V、输出为250 V ~ 500 V、功率为30 kW的实验样机，验证了所提出的磁集成技术和设计方法的有效性。
{"title":"A Novel Magnetics Integrated for Ultrawide Range CLLLC Converter Applied to Charging Piles","authors":"Donghao Tian;Yu Tang;Zhe Zhang","doi":"10.1109/TIA.2025.3603517","DOIUrl":"https://doi.org/10.1109/TIA.2025.3603517","url":null,"abstract":"Isolated bidirectional resonant converters play a key role in the field of electric vehicle charging and discharging. However, due to the presence of multiple magnetic components in the circuit, the improvement of power density is limited. In order to solve this problem, this paper proposes a magnetic integration scheme for high-power bidirectional CLLLC resonant converters, which is an energy-based leakage inductance evaluation strategy. An integrated magnetic (IM) component replaces the original multiple discrete magnetic (DM) components to improve the power density of the converter. Secondly, in order to meet the actual application scenarios, a design method for a high-reliability CLLLC converter with an ultra-wide voltage range is proposed. Third, the rationality of the magnetic integration design is verified by finite element analysis software. Finally, the effectiveness of the proposed magnetic integration technology and design method is demonstrated through an experimental prototype with an input of 660 V-860 V, an output of 250 V-500 V, and a power of 30 kW.","PeriodicalId":13337,"journal":{"name":"IEEE Transactions on Industry Applications","volume":"62 1","pages":"1683-1692"},"PeriodicalIF":4.5,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146006888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-27DOI: 10.1109/TIA.2025.3603526
Ruping Cen;Jia Li;Ting Luo;Qiang Li;Chengmao Du;Quanming Luo
Analysis modeling of isolated bidirectional DC-DC converters (IBDCs) is essential for effective performance analysis and design. To address the challenges posed by existing models in achieving accuracy, speed, and generality for optimization design purposes, this paper presents a novel generalized steady-state analysis model based on two-port network theory and frequency-domain analysis. The proposed model provides an analytical tool applicable to a range of IBDC topologies and modulation strategies, offering strong support in topology selection and automatic parameter optimization design. The effectiveness of this model has been verified through simulations and experiments, with the automatic parameter design software provided as an example to highlight its significant value and potential in IBDC design and applications.
{"title":"A Novel Generalized Steady-State Analysis Model for Isolated Bidirectional DC–DC Converters","authors":"Ruping Cen;Jia Li;Ting Luo;Qiang Li;Chengmao Du;Quanming Luo","doi":"10.1109/TIA.2025.3603526","DOIUrl":"https://doi.org/10.1109/TIA.2025.3603526","url":null,"abstract":"Analysis modeling of isolated bidirectional DC-DC converters (IBDCs) is essential for effective performance analysis and design. To address the challenges posed by existing models in achieving accuracy, speed, and generality for optimization design purposes, this paper presents a novel generalized steady-state analysis model based on two-port network theory and frequency-domain analysis. The proposed model provides an analytical tool applicable to a range of IBDC topologies and modulation strategies, offering strong support in topology selection and automatic parameter optimization design. The effectiveness of this model has been verified through simulations and experiments, with the automatic parameter design software provided as an example to highlight its significant value and potential in IBDC design and applications.","PeriodicalId":13337,"journal":{"name":"IEEE Transactions on Industry Applications","volume":"62 1","pages":"1769-1777"},"PeriodicalIF":4.5,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146006906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, two new multiport converter (MPC) topology have been designed for fast-charging electric vehicles (EVs), integrating the grid, battery energy storage system (BESS), and EV charging. By using both Full Power Processing Converter (FPPC) and Partial Power Processing Converter (PPPC) configurations, the proposed design reduces size and costs, leveraging features like a quasi-Z-source converter (qZSC) for the BESS and a series resonant converter (SRC) for EV charging. The qZSC helps to boost BESS voltage, enabling bi-directional energy flow between grid and BESS, which can store energy during off-peak times and discharge to the grid or EVs during peak demand, supporting grid stability. Additionally, the PPPC configuration allows partial power to flow directly from BESS to EV, further reducing cost by lowering converter rating, reducing losses, ensuring galvanic isolation, and meeting safety standards. A prototype of 550 W has been built to validate the proposed converters.
{"title":"Resonant and Quasi-Z Source Based Multiport Converter for High Power EV Fast Charging With Full and Partial Power Processing","authors":"Zarren Firdous;Saad Mekhilef;Marif Daula Siddique;Marizan Mubin","doi":"10.1109/TIA.2025.3603533","DOIUrl":"https://doi.org/10.1109/TIA.2025.3603533","url":null,"abstract":"In this paper, two new multiport converter (MPC) topology have been designed for fast-charging electric vehicles (EVs), integrating the grid, battery energy storage system (BESS), and EV charging. By using both Full Power Processing Converter (FPPC) and Partial Power Processing Converter (PPPC) configurations, the proposed design reduces size and costs, leveraging features like a quasi-Z-source converter (qZSC) for the BESS and a series resonant converter (SRC) for EV charging. The qZSC helps to boost BESS voltage, enabling bi-directional energy flow between grid and BESS, which can store energy during off-peak times and discharge to the grid or EVs during peak demand, supporting grid stability. Additionally, the PPPC configuration allows partial power to flow directly from BESS to EV, further reducing cost by lowering converter rating, reducing losses, ensuring galvanic isolation, and meeting safety standards. A prototype of 550 W has been built to validate the proposed converters.","PeriodicalId":13337,"journal":{"name":"IEEE Transactions on Industry Applications","volume":"62 1","pages":"1802-1815"},"PeriodicalIF":4.5,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146006909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-27DOI: 10.1109/TIA.2025.3603521
Deyu Wang;Nuo Xu;Xiang Yu;Qinglin Zhao;Zhe Zhang
For bidirectional DC converters, it is difficult to take into account the efficiency, gain range and power density. This paper proposes an LC-LLC bidirectional DC-DC resonant converter for electric vehicle (EV) on-board charger (OBC). The presented converter is constructed by paralleling an LC auxiliary branch at the entrance of the resonant tank of the traditional LLC resonant converter. When the converter operates in forward mode, the half/full bridge hybrid modulation strategy based on FM is adopted with a limited frequency-modulating range for this LLC resonance converter to double the voltage gain. In this mode, the auxiliary branch does not participate in the resonance, improving the soft-switching characteristics. During backward mode, a notch filter formed by the auxiliary LC branch allows the backward voltage conversion ratio over the unity gain, and realizes wide gain within the same narrow frequency-modulating range. The magnetizing inductance of the transformer in this mode also does not participate in the resonance and only plays a role in expanding ZVS. The LC-LLC-type network improves the adaptability of the bidirectional DC converter to energy transfer requirement and battery load changes. Furthermore, it enables the converter to realize soft-switch over the entire operating range.
{"title":"An LC-LLC Resonant Isolated Bidirectional DC-DC Converter With Wide Voltage Gain","authors":"Deyu Wang;Nuo Xu;Xiang Yu;Qinglin Zhao;Zhe Zhang","doi":"10.1109/TIA.2025.3603521","DOIUrl":"https://doi.org/10.1109/TIA.2025.3603521","url":null,"abstract":"For bidirectional DC converters, it is difficult to take into account the efficiency, gain range and power density. This paper proposes an LC-LLC bidirectional DC-DC resonant converter for electric vehicle (EV) on-board charger (OBC). The presented converter is constructed by paralleling an LC auxiliary branch at the entrance of the resonant tank of the traditional LLC resonant converter. When the converter operates in forward mode, the half/full bridge hybrid modulation strategy based on FM is adopted with a limited frequency-modulating range for this LLC resonance converter to double the voltage gain. In this mode, the auxiliary branch does not participate in the resonance, improving the soft-switching characteristics. During backward mode, a notch filter formed by the auxiliary LC branch allows the backward voltage conversion ratio over the unity gain, and realizes wide gain within the same narrow frequency-modulating range. The magnetizing inductance of the transformer in this mode also does not participate in the resonance and only plays a role in expanding ZVS. The LC-LLC-type network improves the adaptability of the bidirectional DC converter to energy transfer requirement and battery load changes. Furthermore, it enables the converter to realize soft-switch over the entire operating range.","PeriodicalId":13337,"journal":{"name":"IEEE Transactions on Industry Applications","volume":"62 1","pages":"1713-1723"},"PeriodicalIF":4.5,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146006855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-27DOI: 10.1109/TIA.2025.3603525
Hanyu Wang;Jijun Wu;Gaokun Zhou;Mingyao Ma;Jiacheng Liang;Hai Wang
The three-level dual-active-bridge (TL-DAB) DC-DC converter is a promising bidirectional DC-DC converter for high-voltage and high-power systems. As the core component in electric vehicle (EV) battery charging systems, TL-DAB will gain wide applications due to its advantages of the capability of high voltage range, high power density, and easy control implementation. The reliability of TL-DAB is essential for the safe operation of the whole EV battery charging system. However, the open-circuit fault (OCF) in TL-DAB converters is a huge threat, leading to DC bias, overcurrent, and imbalanced electrical stress. To address these issues, fault detection and tolerant methods are supposed to be developed. In this article, a fault diagnosis method based on the central voltages of the bridge arms is proposed to locate the faulty switch quickly and accurately. Then, the corresponding fault-tolerant methods are proposed to reduce or remove the threats caused by single or multiple open-circuit faults and maintain a certain transmission power. A TL-DAB converter experimental platform is built to verify the correctness of the faulty mode analysis of TL-DAB converter and the effectiveness of the proposed fault detection and tolerant method.
{"title":"Fault Diagnosis and Tolerant Method of Open-Circuit Faults for a Three-Level Dual Active Bridge DC-DC Converter","authors":"Hanyu Wang;Jijun Wu;Gaokun Zhou;Mingyao Ma;Jiacheng Liang;Hai Wang","doi":"10.1109/TIA.2025.3603525","DOIUrl":"https://doi.org/10.1109/TIA.2025.3603525","url":null,"abstract":"The three-level dual-active-bridge (TL-DAB) DC-DC converter is a promising bidirectional DC-DC converter for high-voltage and high-power systems. As the core component in electric vehicle (EV) battery charging systems, TL-DAB will gain wide applications due to its advantages of the capability of high voltage range, high power density, and easy control implementation. The reliability of TL-DAB is essential for the safe operation of the whole EV battery charging system. However, the open-circuit fault (OCF) in TL-DAB converters is a huge threat, leading to DC bias, overcurrent, and imbalanced electrical stress. To address these issues, fault detection and tolerant methods are supposed to be developed. In this article, a fault diagnosis method based on the central voltages of the bridge arms is proposed to locate the faulty switch quickly and accurately. Then, the corresponding fault-tolerant methods are proposed to reduce or remove the threats caused by single or multiple open-circuit faults and maintain a certain transmission power. A TL-DAB converter experimental platform is built to verify the correctness of the faulty mode analysis of TL-DAB converter and the effectiveness of the proposed fault detection and tolerant method.","PeriodicalId":13337,"journal":{"name":"IEEE Transactions on Industry Applications","volume":"62 1","pages":"1816-1827"},"PeriodicalIF":4.5,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146006910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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