IET Power Electronics最新文献

Analysis and Implementation of an Interleaved High Step-Up Converter With Zero-Voltage-Switching 零电压开关交错高升压变换器的分析与实现

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-07-31 DOI: 10.1049/pel2.70075

Marzieh Mohammadi Jouzdani, Omid Haghparast Naeini, Mahdi Shaneh, Tohid Nouri

{"title":"Analysis and Implementation of an Interleaved High Step-Up Converter With Zero-Voltage-Switching","authors":"Marzieh Mohammadi Jouzdani, Omid Haghparast Naeini, Mahdi Shaneh, Tohid Nouri","doi":"10.1049/pel2.70075","DOIUrl":"https://doi.org/10.1049/pel2.70075","url":null,"abstract":"In this paper, a high step-up DC-DC converter is presented. The input current ripple is reduced by adding the interleaving technique on the input side. Moreover, the combination of coupled inductors (CIs) and built-in transformer (BIT) techniques is applied to achieve ultra-large gain with minimal duty cycles. By combining CIs and BIT, the component count is decreased. In addition, the applied active clamp circuits provide zero-voltage-switching (ZVS) turn-ON conditions for the MOSFETs, which absorb the energy of the leakage inductances of magnetic means and decrease the voltage stress of switches to a value lower than the output voltage. Also, the diodes turn off at zero-current-switching (ZCS), which greatly reduces their switching and reverse-recovery losses. In addition, the introduced converter has common ground, continuous input current, and automatic current sharing between phases. The proposed simplified structure with all mentioned factors results in high efficiency. The introduced converter operation description with its steady-state analysis is discussed. Finally, experimental results with a 24 V input voltage to supply a 480 V–600 W load are presented to validate the theoretical analysis.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70075","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144740490","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

Symmetric Generalized Two-Vector Model Predictive Control With Optimal Vector Sequence and Duty Cycle for Induction Motor Drives 具有最优矢量序列和占空比的异步电动机对称广义双矢量模型预测控制

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2025-07-25 DOI: 10.1049/pel2.70084

Chenhui Zhou, Yongchang Zhang, Wenyue Zheng, Haitao Yang, Jose Rodriguez

{"title":"Symmetric Generalized Two-Vector Model Predictive Control With Optimal Vector Sequence and Duty Cycle for Induction Motor Drives","authors":"Chenhui Zhou, Yongchang Zhang, Wenyue Zheng, Haitao Yang, Jose Rodriguez","doi":"10.1049/pel2.70084","DOIUrl":"https://doi.org/10.1049/pel2.70084","url":null,"abstract":"Two-vector-based model predictive control (MPC) with optimal cycle has been well studied and widely applied in induction motor drives. The past study mainly focuses on the vector selection and duty cycle optimization. It is shown that the steady-state performance of MPC using two arbitrary voltage vectors during one control period is better than that using a fixed combination of a non-zero vector and a zero vector, especially at high speeds. However, the optimal pulse pattern is often ignored or difficult to be balanced in the state-of-the-art methods. This paper proposes an improved symmetric generalized two-vector-based MPC (SGTV-MPC) method to further reduce the current harmonics at steady state. At first, a non-zero vector is distributed equally on both sizes of the middle vector, which is not restricted to a zero vector but possibly a non-zero vector. An efficient way is employed to select the optimal vectors by comparing the sum of their respective duty cycle from deadbeat control based on space vector modulation. Then, not only the middle vector may be a non-zero vector, but also the first and last non-zero vectors are no longer equally distributed on both sizes of the middle vector. In fact, the duty cycle of the first vector is calculated by minimizing the current harmonics during one control period. Finally, the experimental results show that the proposed SGTV-MPC can reduce the current THD by 23.9% at most compared to the conventional generalized two-vector-based MPC, while maintaining similar switching frequency.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70084","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695767","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

Novel Control Scheme to Reduce THD in Bidirectional Three-Phase Inverter Using a Three-Phase Unfolder for the Grid Forming Operation 一种利用三相解压缩器实现双向三相逆变器网格成形的控制方法

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2025-07-24 DOI: 10.1049/pel2.70087

Mehmet Çelebi, Davut Ertekin

{"title":"Novel Control Scheme to Reduce THD in Bidirectional Three-Phase Inverter Using a Three-Phase Unfolder for the Grid Forming Operation","authors":"Mehmet Çelebi, Davut Ertekin","doi":"10.1049/pel2.70087","DOIUrl":"https://doi.org/10.1049/pel2.70087","url":null,"abstract":"Recent trends emphasise the significance of bidirectional power conversion systems in grid-forming operations. Minimising total harmonic distortion (THD) in these systems is crucial for enhancing power quality, efficiency and equipment lifespan. This study proposes a novel reference signal modification control scheme to reduce THD in a bidirectional inverter by adjusting the DC-Link Voltage reference based on AC load feedback. Comparative analysis with conventional systems across various load types demonstrates superior performance, particularly with induction machine loads. The proposed control model involves multiple stages, including error computation, averaging, dynamic error handling, reference modification and regulation using a PI control block. This approach effectively manages error dynamics in the inverter topology and eliminates electromagnetic interference in the PCB without determining any additional theoretical approach. Both simulated and experimental results validate the theoretical analyses, showcasing the efficacy of the proposed method. Its simplicity in modifying the reference voltage makes it suitable for situations where controllers lack the capability to effectively manage desired outputs.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70087","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144688081","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 Universal PCB Rogowski Coils Turns Arrangement Method for Anti-Interference From Adjacent Conductors in Press-Pack IGBT 压包式IGBT中抗相邻导体干扰的通用PCB Rogowski线圈匝数布置方法

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2025-07-24 DOI: 10.1049/pel2.70091

Litong Wang, Jinze Li, Xin Liu, Xingguang Yan, Haifeng Sun, Guowei Zhou

{"title":"A Universal PCB Rogowski Coils Turns Arrangement Method for Anti-Interference From Adjacent Conductors in Press-Pack IGBT","authors":"Litong Wang, Jinze Li, Xin Liu, Xingguang Yan, Haifeng Sun, Guowei Zhou","doi":"10.1049/pel2.70091","DOIUrl":"https://doi.org/10.1049/pel2.70091","url":null,"abstract":"The high-power press-pack insulate gate bipolar transistor (IGBT) is the core device of a high-voltage converter. The current sharing and aging characteristics of many parallel chips in IGBT are critical issues regarding its operational reliability. The printed-circuit board Rogowski coil sensor (PCB RC) is a straightforward tool for measuring the di/dt during the on/off transient process and studying the current sharing and aging characteristics of multiple chips in IGBT. Owing to the very narrow space between parallel chips and large conducted currents in IGBT, the magnetic field interference with the RC sensor from adjacent conductors must be seriously considered. Based on the partial inductance theory, the magnetic field interference from adjacent conductors is analysed in depth. A universal method of turns arrangement of rectangular PCB RC sensors for anti-interference from adjacent conductors is proposed. A PCB comprised of multiple parallel rectangular RC sensors is designed using this method. Under the double-pulse test, the magnetic interference from closely adjacent conductors can be reduced to only 0.56%, and the method's effectiveness is verified.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70091","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144688077","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

Distributionally Robust Optimization Adaptive Event-Triggered SMPC for DC-DC Converters Subject to Unknown Disturbances and DoS Attacks 受未知干扰和DoS攻击的DC-DC变换器的分布鲁棒优化自适应事件触发SMPC

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2025-07-22 DOI: 10.1049/pel2.70081

Yadong Chen, Peng Cheng

{"title":"Distributionally Robust Optimization Adaptive Event-Triggered SMPC for DC-DC Converters Subject to Unknown Disturbances and DoS Attacks","authors":"Yadong Chen, Peng Cheng","doi":"10.1049/pel2.70081","DOIUrl":"https://doi.org/10.1049/pel2.70081","url":null,"abstract":"In this paper, we present adaptive event-triggered distributionally robust optimization stochastic model predictive control (AET-DROSMPC) applied to DC-DC converters subject to unknown disturbances and denial of service (DoS) attacks. The DoS attacks, causing communication interruptions on the controller and actuator (C-A) channel, is described by using Bernoulli variables. While stochastic model predictive control (SMPC) has been extensively studied, existing approaches mostly focus on periodic stochastic model predictive control (PSMPC) and self-triggering stochastic model predictive control (SSMPC) for systems with bounded disturbances or subject to Gaussian distribution. To address chance constraints and disturbances more effectively, we introduce the distributionally robust optimization (DRO) to transform the optimization problem with chance constraints into a convex optimization problem using second-order cone (SOC) equivalence. Moreover, adaptive event-triggered mechanism (AETM) is devised to reduce unnecessary sampling, lower updating frequencies of control input, and ultimately decrease the computational burden of the system, addressing the lack of consideration for exact sampling times and system computing burden. The study rigorously establishes the recursive feasibility and stability of the optimization problem subject to DoS attacks. Finally, a application is conducted to demonstrate the effectiveness and advancements of the proposed algorithm.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70081","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672632","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

Simulation Modelling of Power Management Strategy for Grid Interactive Hybrid Power Supply Using Novel Artificial Neural Network 基于新型人工神经网络的电网交互混合电源管理策略仿真建模

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2025-07-20 DOI: 10.1049/pel2.70089

Saravanan. S, Thamizharasan. S, Baskaran. J, Veerpratap Meena, Tridibesh Nag, Vinay Kumar Jadoun

{"title":"Simulation Modelling of Power Management Strategy for Grid Interactive Hybrid Power Supply Using Novel Artificial Neural Network","authors":"Saravanan. S, Thamizharasan. S, Baskaran. J, Veerpratap Meena, Tridibesh Nag, Vinay Kumar Jadoun","doi":"10.1049/pel2.70089","DOIUrl":"https://doi.org/10.1049/pel2.70089","url":null,"abstract":"Conventional power management methods struggle to respond effectively to the real-time variability of hybrid renewable energy systems, affecting efficiency and reliability. This study introduces a novel configuration for a grid interactive hybrid power supply (GI-HPS) that integrates power from renewable sources and the utility grid to serve industrial or utility loads. A key feature is the use of an intelligent controller implementing an instantaneous current reference scheme (ICRS)-based power management system (PMS), which dynamically adjusts to changes in wind speed, solar irradiance, and load demand by continuously updating the reference current. Additionally, the study explores the design of an interleaved boost converter (IBC) with an optimal number of phases to reduce ripple and complexity. The MATLAB/SIMULINK response comparing the performance of two-phase and four-phase IBC revealed that the four-phase configuration achieves lower current and voltage ripple (0.021 A and 0.53 V, respectively). Therefore, the four-phase IBC is adopted in the GI-HPS to stabilise voltage at the point of common coupling (PCC) under dynamic conditions. Simulation and experimental results using an embedded controller (EC) and artificial neural network (ANN) confirm the system's high stability and reliability.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70089","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663791","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

Analysis of Self-Optimisation Control Strategy for Speed Tracking and Making Dynamic Characteristics of Permanent Magnet Contactor 永磁接触器速度跟踪及动态特性自优化控制策略分析

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2025-07-17 DOI: 10.1049/pel2.70086

Xianbing Wang, Jiyu Peng, Jin Peng, Kecheng Huang, Ziyang Hou

{"title":"Analysis of Self-Optimisation Control Strategy for Speed Tracking and Making Dynamic Characteristics of Permanent Magnet Contactor","authors":"Xianbing Wang, Jiyu Peng, Jin Peng, Kecheng Huang, Ziyang Hou","doi":"10.1049/pel2.70086","DOIUrl":"https://doi.org/10.1049/pel2.70086","url":null,"abstract":"To improve the making dynamic characteristics of permanent magnet (PM) contactors and monitor the motion speed of the moving iron core, a speed tracking self-optimisation control strategy is proposed. The displacement of the moving iron core during the making process is dynamically segmented, and the mechanical motion equation is used to monitor the moving iron core's speed accurately. Mixed control data of the moving iron core's operation speed are collected as sample data. Neural networks are employed to fit the speed prediction curve to identify speed inflection points, based on which the control strategy is optimised. Dynamic adjustments to the coil excitation achieve intelligent closed-loop control of the making process. Using the finite element method, a dynamic mathematical model of the PM contactor's making process was established by coupling the voltage balance equation and D'Alembert's mechanical motion equation. MATLAB software was used to simulate the dynamic characteristics of the contactor under the speed tracking self-optimisation control strategy, and the simulation results were consistent with experimental data. An experimental platform was built to test the proposed self-optimisation control scheme. The results show that this method effectively reduces the final speed of the moving iron core, minimises the first and second rebounds caused by collisions between the movable and stationary contacts, reduces the length of the contact and pull arcs, and significantly enhances the mechanical and electrical lifespan of the contactor.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70086","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144647200","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 Digital Synchronous Rectification Control Strategy With Duty-Ratio Compensation for LLC Resonant Converters 基于占空比补偿的LLC谐振变换器数字同步整流控制策略

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2025-07-17 DOI: 10.1049/pel2.70088

Haihong Qin, Yang Zhang, Zhenhua Ba, Ziyue Zhu, Qian Xun, Feifei Bu

{"title":"A Digital Synchronous Rectification Control Strategy With Duty-Ratio Compensation for LLC Resonant Converters","authors":"Haihong Qin, Yang Zhang, Zhenhua Ba, Ziyue Zhu, Qian Xun, Feifei Bu","doi":"10.1049/pel2.70088","DOIUrl":"https://doi.org/10.1049/pel2.70088","url":null,"abstract":"Synchronous rectification (SR) technique can significantly enhance the efficiency of LLC resonant converters. However, at high frequencies, SR control strategies based on drain–source voltage suffer from substantial duty ratio loss due to the influence of parasitic inductance, thereby limiting further efficiency improvements. To mitigate duty cycle loss at high frequencies, this paper proposes a digital control strategy for switching timing adjustment by compensating the lost conduction time. To achieve this aim, the mechanism of duty ratio loss at high frequencies is analysed and a mathematical model is developed to quantify the lost conduction time across different loads and frequencies in real time. The synchronous rectifier's conduction time is then compensated and optimized by a digital signal processor. Additionally, the issue of premature turn-on of the synchronous rectifier under light load conditions is addressed by adjusting the turn-on timing in real time according to load variations, thereby preventing reverse current flow. The SR control strategy is well-suited for high-frequency and wide-load applications, offering low cost and algorithmic simplicity. Experimental results from a 6kW full-bridge LLC resonant converter prototype validate the feasibility of the proposed SR control strategy, showing a 0.21% increase in peak efficiency compared to traditional SR control strategy.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70088","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144647201","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

New EMI Active Hybrid Active-Passive Filter With Mixed Voltage-Current Injection Dedicated to a GaN Based Boost Converter in kW Range 用于kW范围内GaN基升压变换器的新型电磁干扰有源混合有源无源滤波器

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2025-07-17 DOI: 10.1049/pel2.70090

Amina Gahfif, Pierre-Etienne Lévy, Bertrand Revol, Marwan Ali, François Costa

引用次数: 0

Real-Time AMPC for Loss Reduction in 48 V Six-Phase Synchronous Motor Drives 实时AMPC减少损耗在48 V六相同步电机驱动器

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2025-07-16 DOI: 10.1049/pel2.70072

Pierpaolo Dini, Giovanni Basso, Sergio Saponara, Sajib Chakraborty, Omar Hegazy

引用次数: 0