IET Power Electronics最新文献_第3页

A Stability Enhancement Method for Grid-Forming Inverters With Inductor Current Feedforward and Coupling-Enhancing Control 电感电流前馈耦合增强控制的成网逆变器稳定性增强方法

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2026-01-18 DOI: 10.1049/pel2.70179

Xu Wu, Huafeng Xiao, Mingming Shi, Cunwen Tang, Wei Wang, Ming Cheng

引用次数: 0

Enhanced Linear Quadratic Regulator-Based Strategy for Seamless Transition Between Microgrid Operation Modes 基于增强型线性二次型调节器的微电网运行模式无缝切换策略

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2026-01-18 DOI: 10.1049/pel2.70184

Adel Tatish, Kanchapogu Vaisakh

{"title":"Enhanced Linear Quadratic Regulator-Based Strategy for Seamless Transition Between Microgrid Operation Modes","authors":"Adel Tatish, Kanchapogu Vaisakh","doi":"10.1049/pel2.70184","DOIUrl":"https://doi.org/10.1049/pel2.70184","url":null,"abstract":"Ensuring a seamless transition between grid-connected and islanded modes of operation in microgrids is a critical challenge due to transient disturbances during the transition between the corresponding control strategies (grid-forming and grid-following control strategies), affecting system stability and reliability. This paper presents an advanced control strategy that relies on a linear quadratic regulator-based smooth transition regulator (LQR-STR) to enhance the smoothness and reliability of microgrid mode transitions. Unlike previous LQR-based approaches, the proposed method integrates the full control loops in the smooth regulator design, including the virtual impedance loop, and voltage and current feedforward coefficients for the grid-forming controller, and active/reactive power control loops for the grid-following controller. The impact of imperfect islanding detection and premature reconnection is analysed, demonstrating the robustness of the proposed method under varying transition conditions. The effectiveness of the proposed approach is validated through detailed simulations in MATLAB/Simulink and through a real-time embedded system using the NI sbRIO GPIC Evaluation Kit. The simulation and experimental results show significant improvements in reducing transient overshoots, enhancing voltage and frequency stability and ensuring reliable mode transitions.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"19 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70184","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146002430","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

Development and Real-Time Validation of Deep Learning-Based LSTM-Tuned MPPT Control for a 5 kW Solar-Powered EV Charging System 基于深度学习的lstm调谐MPPT控制在5kw太阳能电动汽车充电系统中的开发与实时验证

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2026-01-15 DOI: 10.1049/pel2.70156

Farha Khan, Hari Om Bansal, Dheerendra Singh

{"title":"Development and Real-Time Validation of Deep Learning-Based LSTM-Tuned MPPT Control for a 5 kW Solar-Powered EV Charging System","authors":"Farha Khan, Hari Om Bansal, Dheerendra Singh","doi":"10.1049/pel2.70156","DOIUrl":"https://doi.org/10.1049/pel2.70156","url":null,"abstract":"The increasing adoption of electric vehicles (EVs) necessitates efficient and eco-friendly charging solutions. Solar-powered EV charging offers a sustainable alternative to grid-dependent systems by reducing carbon emissions. However, the intermittent nature of solar irradiance demands robust maximum power point tracking (MPPT) algorithms to ensure optimal power extraction. Conventional MPPT methods often face challenges like slow convergence and limited tracking accuracy. To address this, the proposed study introduces a deep learning-based MPPT framework using long short-term memory (LSTM) networks for intelligent, data-driven control of a boost converter in a solar-powered EV charging system. The LSTM model is optimized employing stochastic gradient descent with momentum and trained using irradiance and temperature hourly data obtained from NASA/POWER for Jaipur city, India. The controller's performance is benchmarked against traditional algorithms, INC, PSO and ANN. Results show that the LSTM-based MPPT achieved superior tracking efficiency (97.63%), low current ripple (0.21%), and minimal prediction error (RMSE: 0.59%). Afterwards, this LSTM-tuned solar system is employed to charge a 5 kW EV through a boost and a dual active bridge converter. The entire system is validated in MATLAB/Simulink and implemented in real-time on an OPAL-RT OP4512 platform, confirming its effectiveness for intelligent and reliable solar-powered EV charging.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"19 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70156","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146007465","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

Equivalent Test Method for Fault Ride-Through of Integrated Energy-consuming MMC Modules 集成耗能MMC模块故障穿越等效试验方法

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2026-01-03 DOI: 10.1049/pel2.70175

Ying Li, Dan Shi, Liantao Jiang, Kai Ma, Lingqi Tan, Xinwei Li, Ertao Lei, Sihang Wu

{"title":"Equivalent Test Method for Fault Ride-Through of Integrated Energy-consuming MMC Modules","authors":"Ying Li, Dan Shi, Liantao Jiang, Kai Ma, Lingqi Tan, Xinwei Li, Ertao Lei, Sihang Wu","doi":"10.1049/pel2.70175","DOIUrl":"https://doi.org/10.1049/pel2.70175","url":null,"abstract":"The integrated energy-consuming MMC (IEC-MMC) plays a critical role in dissipating surplus power generated during the low-voltage ride-through process in offshore wind systems to achieve low-voltage fault ride-through. As the core equipment of the converter station, the converter valve must undergo a complete type test to ensure normal operation and successful fault crossing. However, existing research has primarily focused on theoretical analysis and simulation of the energy dissipation process in the IEC-MMC, with limited investigation into equivalent testing methods for evaluating its fault ride-through performance at the module level. To address this research gap, this paper proposes an equivalent assessment index covering the entire fault ride-through process, taking the integrated energy-consuming MMC valve as the research object, and resolves the problem of the lack of assessment index for the fault ride-through equivalent test. Furthermore, an equivalent test circuit with integrated energy dissipation and a corresponding test methodology are proposed, offering a practical approach for replicating the stress variations experienced by the valve during fault ride-through. At the same time, it also provides an important reference value for the type test of the converter valve.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"19 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70175","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145904700","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

Design, Modelling and Control of a MW-level Hydrogen Converter for an Off-Grid DC Hydrogen Production System 离网直流制氢系统兆瓦级氢气转化器的设计、建模与控制

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-12-28 DOI: 10.1049/pel2.70176

Rui Zhou, Fei Xiao, Jilong Liu, Yufan Li, Shanxu Duan

{"title":"Design, Modelling and Control of a MW-level Hydrogen Converter for an Off-Grid DC Hydrogen Production System","authors":"Rui Zhou, Fei Xiao, Jilong Liu, Yufan Li, Shanxu Duan","doi":"10.1049/pel2.70176","DOIUrl":"https://doi.org/10.1049/pel2.70176","url":null,"abstract":"In megawatt-level (MW-scale) off-grid hydrogen production systems powered by renewable energy sources (RESs), a high-power hydrogen converter is essential for interfacing the medium-voltage DC bus (MVDCB) with the electrolyser. However, most existing converter topologies fail to meet the stringent requirements of such systems. This paper proposes a novel hydrogen converter based on a two-stage Input-Series Output-Parallel (ISOP) architecture, offering several key advantages, including high voltage step-up capability, improved efficiency, reduced output current ripple, enhanced system reliability, and flexible power regulation capability. The operation principles, snubber circuit optimisation using the Non-dominated Sorting Genetic Algorithm II (NSGA-II), efficiency evaluation, and power balancing control strategies are thoroughly discussed. Experimental results validate the effectiveness of the proposed design and control approach, confirming the converter's suitability for renewable-integrated hydrogen production systems.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"19 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70176","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145905201","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

Real-Time Implementation of Finite Control Set Model Predictive Control for BLDC Motors With Dynamic Speed References on ESP32 基于ESP32的无刷直流电机动态速度参考有限控制集模型预测控制的实时实现

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-12-26 DOI: 10.1049/pel2.70171

Ahmad Entezari, Arash Dehestani Kolagar, Mohammad Reza Alizadeh Pahlavani

{"title":"Real-Time Implementation of Finite Control Set Model Predictive Control for BLDC Motors With Dynamic Speed References on ESP32","authors":"Ahmad Entezari, Arash Dehestani Kolagar, Mohammad Reza Alizadeh Pahlavani","doi":"10.1049/pel2.70171","DOIUrl":"https://doi.org/10.1049/pel2.70171","url":null,"abstract":"This paper investigates the application of Finite Control Set Model Predictive Control (FCS-MPC) for high-performance speed regulation of Brushless DC (BLDC) motors under dynamic operating conditions. The study addresses the challenge of precise tracking for complex references, including sinusoidal, square, triangular, and sawtooth waveforms essential for advanced applications such as robotic and hydraulic actuator systems in aerospace applications. A key contribution is the analytical investigation of the predictive cost function, which elucidates the trade-off between inverter switching frequency and tracking accuracy. This analysis identifies an optimal weighting factor that enables a ∼55% reduction in switching frequency while maintaining dynamic tracking errors below 0.5 RPM. For experimental validation, a custom BLDC motor drive was designed and implemented using an ESP32 processor, incorporating a novel bidirectional torque-limiting strategy for operational safety. Both simulation and experimental results confirm that the proposed approach achieves accurate dynamic speed control for frequencies up to 0.3 Hz. Furthermore, a comparative study demonstrates the superiority of the method, showing an 85% reduction in amplitude error compared to a conventional PWM-ON strategy for a 0.3 Hz sinusoidal reference.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"19 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70171","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145887586","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 Hybrid Design Approach for an LLC Resonant DC-DC Converter Based on Time-Frequency Domain Analysis for Electric Vehicle Application 基于时频域分析的电动汽车LLC谐振DC-DC变换器混合设计方法

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-12-20 DOI: 10.1049/pel2.70169

Ghassem Eini Guraji, Bijan Elyasi, S. Hamid Fathi, Amir Khorsandi

{"title":"A Hybrid Design Approach for an LLC Resonant DC-DC Converter Based on Time-Frequency Domain Analysis for Electric Vehicle Application","authors":"Ghassem Eini Guraji, Bijan Elyasi, S. Hamid Fathi, Amir Khorsandi","doi":"10.1049/pel2.70169","DOIUrl":"10.1049/pel2.70169","url":null,"abstract":"This paper presents a novel design approach for an LLC resonant DC-DC converter tailored for electric vehicle battery chargers. The design methodology considers the non-linear load, ensuring a narrow switching frequency range and zero-voltage-switching (ZVS) conditions for optimal soft-switching. A hybrid design procedure is proposed with a strong emphasis on high efficiency and power density. The resonance frequency and an accurate range for the magnetising inductor are calculated by time-domain analysis using the efficiency formula. The resonant capacitor, magnetising inductor and resonant inductor are then calculated by frequency-domain analysis, considering ZVS conditions and the non-linear load's profile. In the time-domain analysis, a 3D surface map of efficiency versus resonance frequency and magnetising inductor provides an accurate resonance frequency and the range for the magnetising inductor. Furthermore, by drawing a surface map of load considerations versus the calculated resonance frequency and the defined magnetising inductance range, based on the load's profile and ZVS conditions, the optimal design parameters are identified by applying the maximum switching frequency and inductance ratio. Finally, the step-by-step design methodology is validated through experiments on a prototype converting 400 V from the input to an output voltage range of 320 to 420 V at 3.3 kW with a peak efficiency of 97.9%.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70169","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145814584","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

Soft Actor Critic Algorithm Based Reinforcement Learning Controller for Boost Converter 基于软Actor评价算法的升压变换器强化学习控制器

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-12-18 DOI: 10.1049/pel2.70170

Aliyeh Nasiri, Reza Farajpour, Hoda Ghoreishy

{"title":"Soft Actor Critic Algorithm Based Reinforcement Learning Controller for Boost Converter","authors":"Aliyeh Nasiri, Reza Farajpour, Hoda Ghoreishy","doi":"10.1049/pel2.70170","DOIUrl":"10.1049/pel2.70170","url":null,"abstract":"Boost converters are one of the most commonly used converters in power electronics due to their advantages, such as simple structure and low-cost implementation. Due to these issues, many papers have been published about the control method of this topology. This paper proposes a reinforcement learning (RL) controller based on the soft actor-critic (SAC) algorithm for boost converters. This approach aims at decreasing the limitation of conventional controllers, such as long settling times, overshoot, undershoot and instability. It also removes the need for a system model, which is often necessary in traditional control methods. Furthermore, the proposed method addresses the challenges of control under dynamic conditions, which is a problem that has not been sufficiently explored in prior reinforcement learning (RL) based controllers. The proposed approach has demonstrated promising performance in both steady-state and dynamic regulation across a wide range of operational variations. Simulation and experimental results show the superiority of the SAC algorithm over the conventional ones without relying on the system model.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70170","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145824805","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

Analytical-Numerical Hybrid Solution for Transient Thermal Analysis of the Outer Gate IGCT Considering Electrical-Thermal Coupling 考虑电热耦合的外栅IGCT瞬态热分析的解析-数值混合解

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-12-18 DOI: 10.1049/pel2.70166

Naihang Lyu, Yan Pan, Xiaoguang Wei, Xiang Cui, Zhongkang Lin, Kefan Yu, Xinling Tang, Jingfei Wang

{"title":"Analytical-Numerical Hybrid Solution for Transient Thermal Analysis of the Outer Gate IGCT Considering Electrical-Thermal Coupling","authors":"Naihang Lyu, Yan Pan, Xiaoguang Wei, Xiang Cui, Zhongkang Lin, Kefan Yu, Xinling Tang, Jingfei Wang","doi":"10.1049/pel2.70166","DOIUrl":"10.1049/pel2.70166","url":null,"abstract":"The integrated-gate commutated thyristor (IGCT), known for its low conduction losses and high reliability, is increasingly favoured in high-voltage and high-power applications. The junction temperature is a critical determinant of reliability, making the rapid and precise analysis of the transient temperature field indispensable. An analytical-numerical hybrid solution for the transient thermal analysis of the outer gate IGCT considering electrical-thermal coupling is proposed. Validation against FEA confirms the accuracy of the proposed analytical solution, while its computation time is reduced by 94.9%, which underscores its superiority in computational efficiency. Based on this, the proposed analytical-numerical hybrid solution is integrated into the VSC-HVDC simulation model, utilising the calculated maximum junction temperature feedback to optimise the switching frequency of VSC. Simulation results demonstrate that controlling the switching frequency based on the maximum temperature calculated can reduce the device's maximum junction temperature during VSC overload conditions, thereby enhancing the overload capacity of the converter. The analytical-numerical hybrid solution proposed in this article can be used for system simulation and has the potential to be applied to active thermal management of converters.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70166","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145824806","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

Direct Voltage Measurement for Sensorless Control of Single-Stage Current Source Inverter in Motor Drive Applications 电机驱动中单级电流源逆变器无传感器控制的直接电压测量

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-12-18 DOI: 10.1049/pel2.70152

Emilio Carfagna, Giovanni Migliazza, Giampaolo Buticchi, Emilio Lorenzani

{"title":"Direct Voltage Measurement for Sensorless Control of Single-Stage Current Source Inverter in Motor Drive Applications","authors":"Emilio Carfagna, Giovanni Migliazza, Giampaolo Buticchi, Emilio Lorenzani","doi":"10.1049/pel2.70152","DOIUrl":"10.1049/pel2.70152","url":null,"abstract":"Current source inverters (CSIs) offer an alternative to voltage source inverters (VSIs) for electric motor applications. CSIs have some advantageous characteristics, such as the ability to inherently boost voltage, the absence of electrolytic capacitors, and reduced voltage stress on the machine. However, the increased component count and the need for a pre-stage to control the inductor current have limited the adoption of CSIs. For applications that must operate above a base speed, such as more electric aircraft (MEA), single-stage CSI converters are a promising solution. The ability to directly measure the terminal voltages allows for a simple and robust sensorless control approach to be used with this power converter. This approach based on a phase-locked loop (PLL) directly connected to the voltages with a feedforward compensation that depends on voltage drops on Rs and L0 is compared against a back-EMF (BEMF) observer. If a machine with an anisotropic rotor is used and the impedance is small, the feedforward compensation can be neglected leading to the classical PLL. Experimental results on a CSI7 converter driving a permanent magnet synchronous machine (PMSM) report that this kind of sensorless control can be a suitable alternative in motor drive applications.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70152","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145824850","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