IET Power Electronics最新文献_第7页

Aging monitoring method for IGBT module based on conduction voltage drop in bridge-arm short-circuit

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-11-20 DOI: 10.1049/pel2.12825

Shiyuan Liu, Jingwei Zhang, Cui Zhao, Kun Liu, Fangyuan He

{"title":"Aging monitoring method for IGBT module based on conduction voltage drop in bridge-arm short-circuit","authors":"Shiyuan Liu, Jingwei Zhang, Cui Zhao, Kun Liu, Fangyuan He","doi":"10.1049/pel2.12825","DOIUrl":"https://doi.org/10.1049/pel2.12825","url":null,"abstract":"Insulated gate bipolar transistors (IGBTs) serve as the pivotal components within power conversion systems, and given the harsh conditions they endure, evaluating their aging is of paramount importance. Traditional offline aging monitoring method are relatively complex. Based on the conduction voltage drop as the characteristic quantity of IGBT aging, a simpler technique for extracting this parameter is presented, facilitating the assessment of IGBT aging status. Incorporating the working principle of the IGBT bridge-arm short-circuit, a conduction voltage drop model has been established. A composite aging electrical parameter is used to eliminate the impact of degradation in the bond wire of the current source device. By engineering a closed-loop gate drive circuit with adjustable voltage, the short-circuit current is maintained constant, thereby facilitating the acquisition of a consistent conduction voltage drop. A conduction voltage extraction circuit is proposed, in which a resistance-capacitance discharging time is equivalent to the conduction voltage drop to replace the analogue-to-digital circuit. By decreasing the amount of active zone of the chip in IGBT module for increased conduction voltage drop to simulate aging state, the proposed method with the driving circuit is experimentally validated as feasible and reliable.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"17 16","pages":"2842-2851"},"PeriodicalIF":1.7,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12825","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143253034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An improved switch-capacitor based 13-level inverter topology with reduced device count and lower TSV

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-11-19 DOI: 10.1049/pel2.12821

Khan Mohammad, M. Saad Bin Arif, Jose Rodriguez, Mohamed Abdelrahem

{"title":"An improved switch-capacitor based 13-level inverter topology with reduced device count and lower TSV","authors":"Khan Mohammad, M. Saad Bin Arif, Jose Rodriguez, Mohamed Abdelrahem","doi":"10.1049/pel2.12821","DOIUrl":"https://doi.org/10.1049/pel2.12821","url":null,"abstract":"An improved dual-source SC-MLI topology is developed in this article for medium-voltage and high-power applications. This topology can perform symmetrically and asymmetrically to generate 9 levels and 13 levels, respectively. It consists of 10 unidirectional switches, a dual DC source, and two capacitors to provide high-gain output voltage with lower TSV. Since the capacitor's voltages are self-balanced, therefore no need for an auxiliary circuit or sensors, which brings down the complexity of the circuit. To check the viability of the proposed topology, a simple and fundamental control strategy based on nearest-level pulse width modulation is opted for. From the comparative analysis, it was observed that the proposed topology outperformed similar topologies in terms of switch counts, cost factor, power quality, and total standing voltage. The proposed topology's feasibility is evaluated using MATLAB/Simulink under both static and dynamic loads. Furthermore, a thermal analysis is conducted in PLECS software to calculate the losses across the components and consecutively the efficiency of the proposed circuit. It has been found that the proposed topology can generate 9 levels and 13 levels while having an efficiency of over 96% in symmetric and asymmetric configurations, respectively. Finally, the simulation results are verified by using the experimental prototype to validate the performance of the improved circuit under different loading conditions.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"17 16","pages":"3027-3043"},"PeriodicalIF":1.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12821","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143252923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fractional order pole fixed second order generalized integrator based control for grid connected solar photovoltaic system

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-11-19 DOI: 10.1049/pel2.12823

Manoj Badoni, Alka Singh, Ravi Nath Tripathi, Rajeev Kumar, Vijay Kumar Singh

{"title":"Fractional order pole fixed second order generalized integrator based control for grid connected solar photovoltaic system","authors":"Manoj Badoni, Alka Singh, Ravi Nath Tripathi, Rajeev Kumar, Vijay Kumar Singh","doi":"10.1049/pel2.12823","DOIUrl":"https://doi.org/10.1049/pel2.12823","url":null,"abstract":"In this article, the development of multi-functional grid connected solar photovoltaic (PV) system using improved Fractional order Control theory-based Pole fixed Second Order Generalized Integrator (FO-PFSOGI) is proposed. The fractional order (FO) control technique offers an advantage to adjust the fixed structure of the integer order and provide additional degree of freedom to achieve accurate response during the system operation. The FO-PFSOGI control technique is used to extricate fundamental constituent of the non-sinusoidal load current. The PV system is competent of feeding the local load requisite and may also inject surplus power into the grid. The voltage source converter (VSC) utilized in the grid-connected system can also be operated as power quality compensator, taking care of harmonics, unbalancing and excess reactive power demand of the local load. The feasibility of multifunctional operations of the converter is established in this article, thus achieving maximum utilization of the power electronics used in the system and reducing the overall cost. A performance comparison of the developed control technique is presented with the conventional techniques in terms of harmonic compensation, weight convergence and computational complexity. The implementation of the controller is modest and extracts fundamental quantities without any phase delay under different loading conditions. The developed system is validated using both simulation and experimental study. A scaled down experimental setup of grid-connected PV system is implemented in the laboratory and real time performance of the FO-PFSOGI is demonstrated using variations in system load and PV irradiance.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"17 16","pages":"3057-3070"},"PeriodicalIF":1.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12823","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143252927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A decoupling strategy for average value control and ripple suppression of capacitor voltages in modular multilevel converters based on notch filters

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-11-18 DOI: 10.1049/pel2.12822

Xujie Lou, Fei Xiao, Qiang Ren, Liangdeng Hu

引用次数: 0

A novel PWM plus phase shift modulation strategy for three-level isolated dual-active-bridge DC–DC converters

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-11-18 DOI: 10.1049/pel2.12772

Yan Cheng, Shumin Sun, Fei Xu, Peng Yu, Nan Wang, Shibo Wang, Guangqi Zhou, Chenglong Wang

{"title":"A novel PWM plus phase shift modulation strategy for three-level isolated dual-active-bridge DC–DC converters","authors":"Yan Cheng, Shumin Sun, Fei Xu, Peng Yu, Nan Wang, Shibo Wang, Guangqi Zhou, Chenglong Wang","doi":"10.1049/pel2.12772","DOIUrl":"https://doi.org/10.1049/pel2.12772","url":null,"abstract":"A hybrid-three-level isolated dual-active-bridge (HTDAB) DC–DC converter is widely used for grid-interactive power converters. However, a traditional extended-phase-shift (EPS) modulation scheme would cause voltage-level-disorder (VLD) problems in HDAB DC–DC converter system because the output voltage of HTDAB would be clamped at a high- or low-level during power transmission when the inductor current changes directions. Thus, the zero voltage sequence of the HTDAB cannot be stably maintained under EPS control, which not only leads to a significant difference between the actual transmission power and the target output power but also seriously affects the stability of the system control. To address this limitation, the reasons leading to VLD are analysed in detail, that is, an inappropriate PWM switching sequence at the output zero voltage level would occur under EPS control. Then, a novel PWM plus phase shift (PPS) modulation strategy is proposed, which can eliminate VLD completely. Finally, an experimental prototype is built to verify the effectiveness of the proposed PPS modulation scheme. The experimental results demonstrate that the PPS modulation method proposed in this article can effectively eliminate level disturbances and improve system stability.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"17 16","pages":"2796-2807"},"PeriodicalIF":1.7,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12772","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143252736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient DC–DC power converters for fuel-cell electric vehicle: A qualitative assessment

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-11-17 DOI: 10.1049/pel2.12819

Sunil Kumar, Sulayman Jammeh, Rodrigue Samb, Amar Singh

{"title":"Efficient DC–DC power converters for fuel-cell electric vehicle: A qualitative assessment","authors":"Sunil Kumar, Sulayman Jammeh, Rodrigue Samb, Amar Singh","doi":"10.1049/pel2.12819","DOIUrl":"https://doi.org/10.1049/pel2.12819","url":null,"abstract":"The general shift in vehicle propulsion systems from internal combustion engine (ICE) power-train towards electric power-train has led to the development of energy-efficient and compact electric drivetrain for next-generation automobiles such as fuel cell electric vehicles (FCEV). As opposed to ICE, fuel cell vehicles operate with higher powertrain efficiency and are combustion-less since the only byproduct is water. In light of developmental and environmental goals, fuel cell technology is consequently seen as the evolutionary step in vehicle technology. The electric drivetrain for FCEV consists of power converters, motors, and associated control systems. Direct connection of the fuel cell stack to the DC bus and other system components is inefficient. As a result, it becomes essential to regulate the high-voltage DC bus connecting the fuel cell stack to other system elements like the motor and energy storage devices. Therefore, DC–DC converters are designed for main power unit to provide the desired and regulated voltage to the DC bus making the system efficient and reliable. High-voltage step-up DC–DC converters have undergone extensive research in recent years, which has increased their functionality, performance, and efficiency for FCEV. A survey of these converters, and evaluation of their performance and index parameters, could be very helpful in designing efficient converters and for the development of vehicular electric power-train. This paper reviews the literature on electric drive-train, fuel cell systems, and different DC–DC converter topologies for fuel cell electric vehicles. This study aims to conduct a comprehensive assessment of the existing topologies, their applications, and comparative aspects, as well as works that haven't been covered in earlier reviews.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"17 16","pages":"3166-3204"},"PeriodicalIF":1.7,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12819","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143252766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A synchronization method based on current orthogonal decomposition considering harmonic components for wireless power transfer system

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-11-12 DOI: 10.1049/pel2.12702

Min Wu, Songyan Li, Xiang Zhou, Xipei Yu

引用次数: 0

Research on characteristic and DC voltage balancing control of a novel three-phase line-voltage cascaded unity power factor rectifier under unbalanced grid

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-11-11 DOI: 10.1049/pel2.12816

Liu Xia, Wang Cong, Cheng Hong, Chen Hua, Kong Jiayi

{"title":"Research on characteristic and DC voltage balancing control of a novel three-phase line-voltage cascaded unity power factor rectifier under unbalanced grid","authors":"Liu Xia, Wang Cong, Cheng Hong, Chen Hua, Kong Jiayi","doi":"10.1049/pel2.12816","DOIUrl":"https://doi.org/10.1049/pel2.12816","url":null,"abstract":"According to the operating modes of three-phase line-voltage cascaded boost high power factor rectifier topology, the operating characteristics of the rectified output voltage of each module and the characteristics of the topology for automatically balancing the input current under the unbalanced grid are analyzed in this article. Based on the analysis to the unique feature, a simple dual-loop PI control strategy in the rotating coordinate system is designed with no need to deal with the negative sequence component of grid voltage. In response to the issue of unbalanced DC-link capacitor voltage of each module caused by unbalanced grid, injection of the zero-sequence voltage component is adopted in the designed control system, which make the output power of each module be able to be independently regulated, so that the balancing control to the DC-link capacitor voltage of each module is realized. At the same time, the three-phase input currents always remain in balance automatically operating under unity power factor. Simulations and experiments have verified the superiority of the topology structure and the feasibility of the control strategy.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"17 16","pages":"2971-2985"},"PeriodicalIF":1.7,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12816","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143252493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An identical bipolar buck-boost AC-AC converter based on a coupled-inductor with safe-commutation, high gain, and high efficiency

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-11-11 DOI: 10.1049/pel2.12818

Hafiz Furqan Ahmed, Alireza Lahooti Eshkevari, Iman Abdoli

{"title":"An identical bipolar buck-boost AC-AC converter based on a coupled-inductor with safe-commutation, high gain, and high efficiency","authors":"Hafiz Furqan Ahmed, Alireza Lahooti Eshkevari, Iman Abdoli","doi":"10.1049/pel2.12818","DOIUrl":"https://doi.org/10.1049/pel2.12818","url":null,"abstract":"This article proposes a new identical bipolar buck-boost AC-AC converter with integrated coupled inductors. It possesses all the critical features of a bipolar buck-boost topology, providing both in-phase and anti-phase output voltages. Compared to its counterparts, a high boost factor is achieved without large duty ratios due to using magnetic coupling. Also, a high efficiency is obtained. A unipolar half-cycle modulation is employed in which only half of the switches of a phase-leg are modulated per half-cycle. Therefore, only two out of eight power switches operate at high frequency at any instant, ensuring high-efficiency operation. The safe-commutation operation is achieved by completely turning on the auxiliary switches of the main phase leg for a half-cycle, ensuring a continuous inductor current path during dead times. This results in voltage-spike-free operation. Additionally, this converter benefits from continuous input current and performs well with inductive and non-linear loads. The proposed topology can mitigate both voltage sags and swells due to bipolar operation when employed as a dynamic voltage restorer (DVR). Its high boost factor helps compensate for deep voltage sags (above 50%). This article presents the detailed theoretical aspects of the proposed topology, followed by experimental verifications on laboratory-built hardware.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"17 16","pages":"3005-3016"},"PeriodicalIF":1.7,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12818","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143252492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A dual-excitation inductive power transfer system with decoupled transformer for high misalignment tolerance

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-11-10 DOI: 10.1049/pel2.12817

Kerui Xu, Jing Zhou, Yuchao Che, Rui He, Yuankui Wang, Bo Wang, Haocai Huang

{"title":"A dual-excitation inductive power transfer system with decoupled transformer for high misalignment tolerance","authors":"Kerui Xu, Jing Zhou, Yuchao Che, Rui He, Yuankui Wang, Bo Wang, Haocai Huang","doi":"10.1049/pel2.12817","DOIUrl":"https://doi.org/10.1049/pel2.12817","url":null,"abstract":"This study delves into the design and optimization of a 4 kW dual-excitation inductive power transfer system designed to accommodate large misalignments. The system utilizes a bipolar-solenoid inductive coupled transformer as its coupling mechanism. Detailed simulation and analysis of this coupling mechanism are conducted. Additionally, the system employs a control strategy aimed at optimizing the coordination between output power and efficiency. This control strategy dynamically adjusts the power of the two transmitters, aiming to enhance system efficiency to the maximum extent possible under favourable coupling conditions. Moreover, it ensures that the system's output power remains at or above the rated value even when coupling conditions deteriorate. During the experiment, the system can optimize the output power and efficiency at the same time by using a suitable control strategy when the coils are misaligned. Meanwhile, the system can achieve a minimum efficiency of 81.5% even when the misalignment distance reaches 300 mm (60% of per transmitting coil size). The system and control strategy proposed in this paper can effectively overcome the deterioration of the output characteristics of the wireless power transfer system when misalignment occurs.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"17 16","pages":"2986-3004"},"PeriodicalIF":1.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12817","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143252343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0