IET Power Electronics最新文献_第2页

Ripple-Free Input Current Quadratic Converter Based on Watkin–Johnson Topology 基于Watkin-Johnson拓扑的无纹波输入电流二次变换器

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-09-25 DOI: 10.1049/pel2.70122

Brenda Lizeth Reyes-García, Pedro Martín García-Vite, Hector R. Robles-Campos, Marco Antonio Coronel-García, Julio C. Rosas-Caro, Francisca Hernández Angel

{"title":"Ripple-Free Input Current Quadratic Converter Based on Watkin–Johnson Topology","authors":"Brenda Lizeth Reyes-García, Pedro Martín García-Vite, Hector R. Robles-Campos, Marco Antonio Coronel-García, Julio C. Rosas-Caro, Francisca Hernández Angel","doi":"10.1049/pel2.70122","DOIUrl":"https://doi.org/10.1049/pel2.70122","url":null,"abstract":"This article proposes a power electronics converter capable of providing high voltage gain while keeping a high-quality input current ripple operating with low duty cycle. The technique for achieving the zero input current ripple at a selected duty cycle consists of extracting two inductor currents from the source in a counter-phase manner. The technique is similar to those employed in interleaved converters, maintaining the high voltage gain. The quadratic-type voltage gain makes the proposed converter suitable for low-voltage renewable energy sources, such as PV panel generation. Another important topology feature is the common reference to the output voltage; that is, the load and source share the negative terminals. The high voltage gain is achieved by cascading two particular power cells. On the input side, a modified buck-boost converter is connected, while the second stage consists of an H-bridge based on the Watkin–Johnson topology. The H-bridge configuration consists of two capacitors, one inductor, and a pair of transistors and diodes to control the voltage gain, which provides polarity selection flexibility. This paper includes the mathematical development in continuous conduction mode operation, providing design guidelines. Besides, two commutation techniques are proposed to obtain direct or inverse polarity. The modeling is validated via simulation, and an experimental lab-scale corroborates its performance. The validation includes open-loop performance, demonstrating low input current ripple, and a closed-loop configuration that confirms proper output voltage regulation.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70122","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145146484","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

Two-Stage Gate Control to Minimize Inrush Current in Piezoelectric Transformer Based Inductorless ZVS Converter 基于压电变压器的无电感ZVS变换器的两级栅极控制

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-09-23 DOI: 10.1049/pel2.70124

Ajay M. Chole, Maeve Duffy

引用次数: 0

Fast Power Control Strategy for Grid-Forming Inverter Based on Model Reference Adaptation 基于模型参考自适应的成网逆变器快速功率控制策略

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-09-22 DOI: 10.1049/pel2.70108

Xinxin Fu, Xing Zhang, Feng Han, Mengze Wu, Zixuan Guo

{"title":"Fast Power Control Strategy for Grid-Forming Inverter Based on Model Reference Adaptation","authors":"Xinxin Fu, Xing Zhang, Feng Han, Mengze Wu, Zixuan Guo","doi":"10.1049/pel2.70108","DOIUrl":"10.1049/pel2.70108","url":null,"abstract":"With the improvement of the new energy penetration rate, the power grid presents the characteristics of a weak current network, and a series of unstable problems appear. Compared with the grid-following inverter (GFLI), the grid-forming inverter (GFMI) provides essential voltage and frequency stabilisation capabilities for weak grids and has received extensive attention. Under the condition that the grid frequency does not exceed the limit, in order to give consideration to the economy, it is hoped that the inverter can track the maximum power point (MPP) of new energy so as to improve the utilisation rate of new energy. However, the active power control bandwidth of GFMI is low, which cannot meet the requirements of MPP tracking control rapidity. Therefore, this paper proposes a fast power control strategy for GFMI: firstly, the active power control bandwidth is improved by a prefilter with leading characteristics; then, model reference is used to adaptively adjust the parameters of the prefilter to avoid the impact of grid impedance changes on bandwidth enhancement performance. With the proposed control, the GFMI can quickly adjust the output power and track the maximum power point of new energy without affecting the stability. Finally, experimental validation confirms the technical feasibility and performance superiority of the proposed strategy.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70108","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111067","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

Heuristic Switching State Domain Reduction Finite Control Set Model Predictive Control for Multi-Level Current Source Inverter 多电平电流源逆变器的启发式开关状态域缩减有限控制集模型预测控制

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-09-22 DOI: 10.1049/pel2.70115

Muyu Chen, Amer M. Y. M. Ghias, Chenggang Cui, Zhige Yuan, Xitong Niu, Vun Chan Hua Nicholas

{"title":"Heuristic Switching State Domain Reduction Finite Control Set Model Predictive Control for Multi-Level Current Source Inverter","authors":"Muyu Chen, Amer M. Y. M. Ghias, Chenggang Cui, Zhige Yuan, Xitong Niu, Vun Chan Hua Nicholas","doi":"10.1049/pel2.70115","DOIUrl":"10.1049/pel2.70115","url":null,"abstract":"This paper presents heuristic domain reduction finite control set model predictive control (FCS-MPC) for multilevel current source inverters that addresses the computational burden with improved performance. The proposed strategy is designed by taking advantage of the characteristics of the current source inverter and integrating its structural features and electrical properties to narrow the range of switching state options. By reducing the computational load from exponential to quadratic order, the proposed method significantly reduces the computational burden on the controller while maintaining system performance, making it more suitable for real-time applications. Simulations and hardware-in-the-loop testing demonstrate performance comparable to conventional FCSs across various operating conditions, while its reduced complexity enables higher sampling frequencies without CPU overload. Whereas the conventional approach is limited by CPU overload, the suggested approach allows for improved system performance at higher sampling rates or with more intricate control schemes.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70115","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111068","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

Inverter Open Circuit Fault Diagnosis Method Based on Residual Evaluation and Machine Learning 基于残差评估和机器学习的逆变器开路故障诊断方法

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-09-16 DOI: 10.1049/pel2.70121

Tianyu Sun, Chaobo Chen, Jiawei Dai, Binbin Zhang, Song Gao

{"title":"Inverter Open Circuit Fault Diagnosis Method Based on Residual Evaluation and Machine Learning","authors":"Tianyu Sun, Chaobo Chen, Jiawei Dai, Binbin Zhang, Song Gao","doi":"10.1049/pel2.70121","DOIUrl":"10.1049/pel2.70121","url":null,"abstract":"To address the issues of limited noise resistance capability in fault diagnosis and inherent difficulties in fault isolation within conventional model-driven methods, an inverter open-circuit fault diagnosis method based on residual evaluation and machine learning is proposed in this paper. Firstly, the linear Kalman filter is designed to estimate three-phase currents subject to the noise interference. Current residuals are calculated by subtracting the estimated values from actual fault currents. Secondly, the residual evaluation function based on the p-norm is introduced. Subsequently, the residual evaluation features within each time subdomain are computed in sequence. Meanwhile, the alarm threshold via weight negative correlation is put forward. Fault diagnosis is achieved by comparing evaluation features with the threshold. Thirdly, the feedforward neural network is employed to extract nonlinear features of current residuals. Feature components after principal component analysis are input into the support vector machine to accomplish classification tasks and locate failure power transistors. Simulation results show that the fault diagnosis scheme performs the fast diagnosis speed and has the ability to avoid false alarms. The fault isolation scheme based on the machine learning framework achieves precise location of the failure power transistor on the basis of rapid diagnosis.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70121","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101235","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

Low-Speed Sensorless Control of Induction Motors Using Silicon Carbide (SiC) Inverters 使用碳化硅（SiC）逆变器的感应电机低速无传感器控制

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-09-15 DOI: 10.1049/pel2.70119

Xiaoliang Bian, Xibo Yuan, Wenzhi Zhou, Shuo Chen, Kai Wang

{"title":"Low-Speed Sensorless Control of Induction Motors Using Silicon Carbide (SiC) Inverters","authors":"Xiaoliang Bian, Xibo Yuan, Wenzhi Zhou, Shuo Chen, Kai Wang","doi":"10.1049/pel2.70119","DOIUrl":"10.1049/pel2.70119","url":null,"abstract":"Current research on sensorless control for induction motors (IMs) with silicon inverters shows inadequate performance at low speeds. However, there is no reported literature on the influence of silicon carbide (SiC) device characteristics on the performance of IM sensorless control for model-based methods, and the influence remains unclear. This article addresses this gap by demonstrating an IM sensorless control system with SiC inverters and investigating its speed estimation accuracy under low-speed conditions. Firstly, the mechanism relationship between SiC device characteristics and speed estimation accuracy is revealed to reduce estimation error. Further, a three-level adaptive compensation method, considering non-ideal factors, such as the electromagnetic interference caused by high dv/dt of SiC devices and the parasitic capacitance effect, is proposed to improve the speed estimation accuracy. As a result, the low-speed operating range is extended to 15 rpm (0.5 Hz), and the speed error is below 5 rpm in dynamic and static conditions of the speed from 30 to 60 rpm, which is verified on a 7.5 kW IM drive platform based on the SiC inverter.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70119","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101199","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 Extensive Review and Analysis on Performance Improvement of Grid Tied Multilevel Inverter Using Optimisation Techniques 利用优化技术提高并网多电平逆变器性能的综述与分析

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-09-14 DOI: 10.1049/pel2.70098

Paul Sathiyan Sam, Benin Pratap Chandran, Albert Alexander Stonier, Geno Peter, Vijayakumar Arun, Vivekananda Ganji

{"title":"An Extensive Review and Analysis on Performance Improvement of Grid Tied Multilevel Inverter Using Optimisation Techniques","authors":"Paul Sathiyan Sam, Benin Pratap Chandran, Albert Alexander Stonier, Geno Peter, Vijayakumar Arun, Vivekananda Ganji","doi":"10.1049/pel2.70098","DOIUrl":"10.1049/pel2.70098","url":null,"abstract":"Traditional power generating is harmful to the environment; hence, renewable energy generation is becoming more popular. The performance of the converters that connect such power generation sources to the grid is critical. Multi-level inverters are used in solar-based photovoltaic applications as they offer better performance, structural flexibility and isolated inputs. To overcome the harmonic difficulties, the switching instances of these inverters are estimated offline utilising sophisticated computational approaches. Even though several optimisation tactics have been tried in the past, the switching frequency, modulation index, or both have been considered as fixed parameters. A 3Φ 11-level cascaded multi-level inverter was chosen for analysis in this study because it has been widely documented in studies on optimum switching instance determination. The best switching angles for various modulation indexes and switching frequencies were determined using five computational methodologies. The PV system with MLI has been developed in the MATLAB/Simulink environment and tested. The outcomes are compared with the existing work as well as the IEEE-519:2014 standard. The findings back up the inverter's better performance due to optimised switching employing the latest intelligent computational algorithms.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70098","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145051182","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

Stability Enhancement of DC Microgrids Under CPLs Using Secretary Bird Optimization Algorithm-Tuned Backstepping-GITSM Control: Design, Simulation, and Experimental Approach 基于秘书鸟优化算法的gitsm控制增强cpl下直流微电网的稳定性：设计、仿真和实验方法

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-09-14 DOI: 10.1049/pel2.70118

Md Saiful Islam, Israt Jahan Bushra, Tushar Kanti Roy, Jim Mortaej Chowdhury

{"title":"Stability Enhancement of DC Microgrids Under CPLs Using Secretary Bird Optimization Algorithm-Tuned Backstepping-GITSM Control: Design, Simulation, and Experimental Approach","authors":"Md Saiful Islam, Israt Jahan Bushra, Tushar Kanti Roy, Jim Mortaej Chowdhury","doi":"10.1049/pel2.70118","DOIUrl":"10.1049/pel2.70118","url":null,"abstract":"DC microgrids (DCMGs) play a pivotal role in integrating renewable energy sources into modern power systems. However, constant power loads (CPLs), such as motor drives and electronic devices, introduce negative incremental impedance (NII), posing serious stability challenges. This research addresses the destabilizing effects of CPLs in DC-DC boost converters (DBCs) by proposing a robust composite control strategy that enhances system stability and dynamic performance. The control framework integrates global integral terminal sliding mode control (GITSMC) with the backstepping method, while the secretary bird optimization algorithm (SBOA) is employed to eliminate manual tuning and ensure precise regulation of DC-bus voltage. A virtual capacitor is introduced to mitigate the low-inertia effect, and exact feedback linearization transforms the nonlinear DBC model into Brunovsky's canonical form, effectively addressing both NII and non-minimum phase behavior. An exponential reaching law further reduces chattering and ensures fast convergence, while Lyapunov theory confirms global stability. Simulation results demonstrate 52.15% faster settling time, 83.63% lower overshoot, and 86.87% reduced undershoot. Compared with BS-SMC, SOSMC, and conventional SMC, the proposed controller achieves up to 81.74% improvement in settling time and up to 95% reduction in overshoot and undershoot. Experimental results further validate the controller's superior transient response and robustness, making it well-suited for CPL-dominated DCMGs.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70118","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062775","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

Enhancement of LLC Converter Circuit With Voltage Balancing Control Considerations for Output Voltage Range Extension 基于电压平衡控制的LLC变换器电路的改进及输出电压范围的扩展

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-09-11 DOI: 10.1049/pel2.70120

Chu-Fu Tsai, Shyh-Jier Huang

{"title":"Enhancement of LLC Converter Circuit With Voltage Balancing Control Considerations for Output Voltage Range Extension","authors":"Chu-Fu Tsai, Shyh-Jier Huang","doi":"10.1049/pel2.70120","DOIUrl":"10.1049/pel2.70120","url":null,"abstract":"This paper proposes an LLC converter circuit with capacitor voltage balancing control for wide output voltage range applications. This proposed topology consists of a three-level half-bridge LLC structure on the primary side, which helps reduce the voltage stress on power devices and is suitable for high input voltage supply. It is operated in a complementary 50% duty cycle of fixed switching frequency for DC-DC transformer (DCX) mode and boost mode and operated in PWM for buck mode. The secondary side employs an active-bridge rectifier with phase-shift control to boost the output voltage, thereby extending the voltage regulation range. This design enables a wide range of voltage regulation capabilities and ensures a smooth transition between modes. In addition, considering two capacitors connected in series at the input of the three-level circuit that may cause voltage imbalances due to component mismatch or asymmetrical switching times of power devices, the study also proposes a control strategy with the designated control circuit to maintain the voltage balance of capacitors. To validate the effectiveness of this method, a circuit with a 400 V input, an output ranging from 150 to 400 V, and a power range of 1 kW has been implemented to realise the feasibility of the proposed approach.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70120","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037834","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 M-POS-ANN Controller for the Solar Photo Voltaic Inverter Controlling in the Grid Integrated System 并网系统中太阳能光伏逆变器控制的新型M-POS-ANN控制器

IF 1.9 4区工程技术

IET Power Electronics Pub Date : 2025-09-11 DOI: 10.1049/pel2.70105

Abhinav Saxena, Jay Singh, Amevi Acakpovi

{"title":"A New M-POS-ANN Controller for the Solar Photo Voltaic Inverter Controlling in the Grid Integrated System","authors":"Abhinav Saxena, Jay Singh, Amevi Acakpovi","doi":"10.1049/pel2.70105","DOIUrl":"10.1049/pel2.70105","url":null,"abstract":"The major challenges with solar photovoltaic-based grid-connected systems are poor sensitivity, poor selectivity, improper voltage control and poor power quality parameters like total harmonic distortion (THD), due to which synchronisation between SPV and the grid is difficult to maintain. In the proposed research, the solar photovoltaic is connected to the grid via a boost converter and inverter. The perturb and observe (P&O) method is used for extracting the maximum power from SPV and boost converter controlling. The existing controllers have complex mathematics and occupy a computational burden. In order to overcome such a problem, inverter controlling has been assessed with the implication of a novel design of mixed poison distribution and an artificial neural network (M-POS-ANN) controller. Such a novel design of controller is simple with less data computation and easy to apply in comparison to existing methods. The controlling of the inverter is also assessed with the cuckoo search algorithm (CSA) and fuzzy logic controller (FLC). The proposed M-POS-ANN controller improves the selectivity to 0.082 p.u., enhances the sensitivity to 5.3 p.u., provides a minimum total harmonic distortion of 3.4% and the least DC link voltage deviation of 2.9% in comparison to CSA, FLC and other existing methods. The effectiveness of the M-POS-ANN controller is also tested and validated in the hardware setup of a 2 kW solar module, a 3 kW boost converter, a 5 kW inverter on an STM32F407 controller.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.70105","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037870","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