IET Power Electronics最新文献_第4页

LLC Resonant Converters With Reconfigurable Rectifier for Wide Voltage Range Applications 具有可重构整流器的宽电压范围应用的LLC谐振变换器

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-12-18 DOI: 10.1049/pel2.70172

Fan Yang, Xinxi Tang, Hongfei Wu, Yan Xing

引用次数: 0

Improved Nonsingular Fast Terminal Super-Twisting Sliding Mode Observer-Based Dual-Vector Finite Control Set Model-Predictive Fault-Tolerant Control for PMSM Demagnetisation Fault 基于观测器的改进非奇异快端超扭滑模双向量有限控制集模型预测PMSM退磁故障容错控制

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-12-17 DOI: 10.1049/pel2.70167

Mai Zhang, Minsheng Yang, Wei Zhang, Ping Yang, Dingai Zhong, Yang Zhang

引用次数: 0

Improved Nonsingular Fast Terminal Super-Twisting Sliding Mode Observer-Based Dual-Vector Finite Control Set Model-Predictive Fault-Tolerant Control for PMSM Demagnetisation Fault 基于观测器的改进非奇异快端超扭滑模双向量有限控制集模型预测PMSM退磁故障容错控制

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-12-17 DOI: 10.1049/pel2.70167

Mai Zhang, Minsheng Yang, Wei Zhang, Ping Yang, Dingai Zhong, Yang Zhang

引用次数: 0

Neural Network-Based Multiple-Model Adaptive Control of Grid-Connected Inverters in Weak Grids 弱电网中基于神经网络的并网逆变器多模型自适应控制

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-12-16 DOI: 10.1049/pel2.70164

Yu Xiao, Xing Zhang, Feng Han

{"title":"Neural Network-Based Multiple-Model Adaptive Control of Grid-Connected Inverters in Weak Grids","authors":"Yu Xiao, Xing Zhang, Feng Han","doi":"10.1049/pel2.70164","DOIUrl":"https://doi.org/10.1049/pel2.70164","url":null,"abstract":"Grid-connected inverters (GCIs) operating in grid-following (GFL) control may suffer from instability when connected to a weak grid characterised by a low short-circuit ratio (SCR). Conversely, GCIs operating in grid-forming (GFM) control may be unstable under a strong grid. Furthermore, there is a certain contradiction between the stability and performance of the GCIs. To improve the dynamic performance of the GCIs while ensuring stability, a neural network-based multiple-model adaptive control (MMAC) strategy is proposed in this paper. First, a small-signal stability analysis is conducted for different control modes, and a control-switching scheme is introduced to ensure stable GCI operation across a wide SCR range. The proposed method employs the virtual dynamic short-circuit ratio for GCI control design, enabling a unified stability margin while maximising dynamic performance. Then, the online application of multiple-model adaptive control is realised by the neural network, which can adapt to the fluctuations of grid impedance and power. The experimental results verify the effectiveness of the proposed method.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70164","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145824554","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

Neural Network-Based Multiple-Model Adaptive Control of Grid-Connected Inverters in Weak Grids 弱电网中基于神经网络的并网逆变器多模型自适应控制

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-12-16 DOI: 10.1049/pel2.70164

Yu Xiao, Xing Zhang, Feng Han

{"title":"Neural Network-Based Multiple-Model Adaptive Control of Grid-Connected Inverters in Weak Grids","authors":"Yu Xiao, Xing Zhang, Feng Han","doi":"10.1049/pel2.70164","DOIUrl":"https://doi.org/10.1049/pel2.70164","url":null,"abstract":"Grid-connected inverters (GCIs) operating in grid-following (GFL) control may suffer from instability when connected to a weak grid characterised by a low short-circuit ratio (SCR). Conversely, GCIs operating in grid-forming (GFM) control may be unstable under a strong grid. Furthermore, there is a certain contradiction between the stability and performance of the GCIs. To improve the dynamic performance of the GCIs while ensuring stability, a neural network-based multiple-model adaptive control (MMAC) strategy is proposed in this paper. First, a small-signal stability analysis is conducted for different control modes, and a control-switching scheme is introduced to ensure stable GCI operation across a wide SCR range. The proposed method employs the virtual dynamic short-circuit ratio for GCI control design, enabling a unified stability margin while maximising dynamic performance. Then, the online application of multiple-model adaptive control is realised by the neural network, which can adapt to the fluctuations of grid impedance and power. The experimental results verify the effectiveness of the proposed method.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70164","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145824555","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 New Method for Loss Optimization in LLC Resonant Converters via Integrated Magnetic and Tank Design 基于磁槽一体化设计的LLC谐振变换器损耗优化新方法

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-12-15 DOI: 10.1049/pel2.70165

Andre de Souza Leone, Henrique Marin Van Der Broocke Campos, Édwin Augusto Tonolo, William Rafhael da Silva, Romulo Francisco Lepinsk Lopes

{"title":"A New Method for Loss Optimization in LLC Resonant Converters via Integrated Magnetic and Tank Design","authors":"Andre de Souza Leone, Henrique Marin Van Der Broocke Campos, Édwin Augusto Tonolo, William Rafhael da Silva, Romulo Francisco Lepinsk Lopes","doi":"10.1049/pel2.70165","DOIUrl":"https://doi.org/10.1049/pel2.70165","url":null,"abstract":"In environments with numerous converters, there is a need for highly efficient. The LLC resonant converter is a good candidate for microgrid applications, as it features low switching losses and a wide voltage regulation range. However, designing magnetic components with lower losses remains a challenge for designers. This paper presents a methodology for reducing losses in the LLC resonant converter by integrating the tank design with the construction design of the transformer and resonant inductor. An algorithm generates a list of feasible components, filtered by constraints on flux density, core temperature, inductance, and winding resistance. The filters select resonant tank element designs that operate at the ideal core temperature, with fewer turns, and that limit current circulation. The tank elements were constructed for validation through experimental results on a 1 kW prototype. Experimental results demonstrated a peak efficiency of 97.48% under ideal thermal conditions. Losses in the resonant tank were reduced by 6.6% compared to ambient operation. Further efficiency (up to 97.52%) was achieved by increasing the magnetizing inductance. The results confirm that the integration of the magnetic design with the design of the resonant tank allows the reduction of losses in LLC converters.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70165","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145824495","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 Novel Step-Up Converter With Lower Ripple and RHP Zero Elimination 具有低纹波和RHP零消除的新型升压变换器

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-12-12 DOI: 10.1049/pel2.70138

Siwen Ye, Jiawei Zhu, Mingou Wei, Xijun Yang

{"title":"A Novel Step-Up Converter With Lower Ripple and RHP Zero Elimination","authors":"Siwen Ye, Jiawei Zhu, Mingou Wei, Xijun Yang","doi":"10.1049/pel2.70138","DOIUrl":"10.1049/pel2.70138","url":null,"abstract":"The paper presents a novel step-up converter featuring ultralow output ripple and elimination of right-half-plane (RHP) zeros, making it suitable for high-precision and high-reliability boost applications. The equivalent circuit of the proposed topology is established using the T-equivalent model of the transformer. Based on this model, a systematic analysis reveals that the proposed topology is functionally equivalent to cascaded Buck converters superimposed with the input DC voltage, where the number of stages is determined by the transformer turns ratio. As a result, the proposed converter offers a linear boost characteristic while inheriting the advantages of Buck converters. Compared to existing methods for eliminating RHP zeros, this topology exhibits superior overall performance, including reduced voltage stress of semiconductors, a lower component count, and a simplified circuit structure. In addition, unlike conventional interleaved boost converters that mitigate output ripple through structural redundancy, the proposed approach suppresses output voltage ripple naturally. The theoretical steady-state performance is experimentally verified by means of a semi-physical platform and a prototype under various operating conditions.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70138","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739775","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

Review and Prospect of 10 kV and Above Silicon Carbide Power Modules Packaging Technologies 10kv及以上碳化硅功率模块封装技术回顾与展望

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-12-10 DOI: 10.1049/pel2.70163

Xinling Tang, Xiaoguang Wei, Zhongkang Lin, Du Yujie, Rui Liu

引用次数: 0

A Topology Derivation Method of Non-Isolated DC-DC Converter Based on Inductance Model 基于电感模型的非隔离DC-DC变换器拓扑推导方法

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-12-09 DOI: 10.1049/pel2.70159

Hanzhe Wang, Hongliang Wang, Xinhui Zhao, Chaoyi Zhang, Mingyang Han, Wei Tang, Xiaojun Deng, Xiumei Yue

引用次数: 0

A Novel Hybrid Control Approach for Frequency and Voltage Regulation in IPT Systems 一种新的IPT系统频率和电压混合控制方法

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-11-28 DOI: 10.1049/pel2.70161

Mohammadreza Kiyani, Seyed Ehsan Abdollahi, Seyedreza Abdollahi, Barmak Baigzadehnoe

{"title":"A Novel Hybrid Control Approach for Frequency and Voltage Regulation in IPT Systems","authors":"Mohammadreza Kiyani, Seyed Ehsan Abdollahi, Seyedreza Abdollahi, Barmak Baigzadehnoe","doi":"10.1049/pel2.70161","DOIUrl":"10.1049/pel2.70161","url":null,"abstract":"The purpose of the inductive power transfer (IPT) system is to deliver sufficient power from the power supply to the load via a magnetic coupler. To optimise the efficiency, transmission power, and stability of IPT systems, it is essential to sustain the resonant conditions of the system while stabilising the output voltage in the presence of parameter variations. Therefore, in a fully realised IPT system, the primary objectives are precisely tuning the operating frequency and regulating the output voltage. This paper proposes a novel hybrid control strategy that integrates a phase-locked loop utilising the second-order generalised integrator (SOGI) with phase shift control. The proposed method effectively maintains the stability of the output voltage and the resonant state of the system by concurrently adjusting the operating frequency and the phase shift angle, employing the variable frequency phase shift (VFPS) algorithm. The control strategy demonstrates high precision, provides a smooth transient response during start-up across a range of operational conditions, and ensures that ZVS operation can be achieved. Furthermore, it significantly enhances the system's robustness in the presence of parameter fluctuations. The superiority of this approach is validated through a comprehensive analysis of MATLAB simulation results and empirical testing on a dedicated experimental setup.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70161","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145626448","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