Periodica polytechnica Electrical engineering and computer science最新文献

Modeling and Study of Different Magnet Topologies in Rotor of Low Rating IPMSMs 低额定功率 IPMSM 电机转子中不同磁体拓扑结构的建模与研究

Periodica polytechnica Electrical engineering and computer science Pub Date : 2024-07-16 DOI: 10.3311/ppee.22669

Supriya Naik, Baidyanath Bag, Kandasamy Chandrasekaran

{"title":"Modeling and Study of Different Magnet Topologies in Rotor of Low Rating IPMSMs","authors":"Supriya Naik, Baidyanath Bag, Kandasamy Chandrasekaran","doi":"10.3311/ppee.22669","DOIUrl":"https://doi.org/10.3311/ppee.22669","url":null,"abstract":"A study and performance analysis of magnet positions in different topology on the surface of rotor in permanent magnet synchronous motors (PMSMs) based on finite element method is observed here. A 3-phase interior PMSM is numerically simulated with ANSYS Maxwell 2018.1. Differently positioned permanent magnets improve the performance of PMSMs. Apart from handling nonlinear equations, FEM is used for simulation. ANSYS is used to analyze PMSM performance under variable conditions. This proposal examines a three-phase, 0.55 kW PMSM at 220 V, 50 Hz. Here rotor topologies of five types, namely, (i) spoke/tangential, (ii) saturable bridge / u-shape, (iii) V-shape, (iv) radial, and (v) segmented bridge permanent magnet rotor are taken for observation. The motive of this study is to analyze the performance of PMSMs in different rotor designs with different magnet positions. All topologies have been modeled and simulated with ANSYS. Each topology is compared in terms of electromagnetic and mechanical parameters. The 2D model is used to model the distribution of magnetic fields and the performance of operating parameters under transient and steady-state conditions. Magnetic flux, and efficiency are heavily influenced by the rotor shape with the volume of magnet. A study of radial force distribution and mechanical stress across rotor surface is also discussed. Motor performance is affected by the design of PMs.","PeriodicalId":37664,"journal":{"name":"Periodica polytechnica Electrical engineering and computer science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141640486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Self-adapting Pixel Antenna - Substrate Lens System for Infrared Frequencies 用于红外频率的自适应像素天线 - 基质透镜系统

Periodica polytechnica Electrical engineering and computer science Pub Date : 2024-07-01 DOI: 10.3311/ppee.36820

Mustafa Shubbar, Balázs Rakos

引用次数: 0

Improving Reinforcement Learning Exploration by Autoencoders 用自动编码器改进强化学习探索

Periodica polytechnica Electrical engineering and computer science Pub Date : 2024-07-01 DOI: 10.3311/ppee.36789

Gabor Paczolay, István Harmati

引用次数: 0

Palmprint Identification Using Dolphin Optimization 利用海豚优化技术识别掌纹

Periodica polytechnica Electrical engineering and computer science Pub Date : 2024-06-05 DOI: 10.3311/ppee.22767

Sarah A. Mohammed Al-Taie, B. Khaleel

{"title":"Palmprint Identification Using Dolphin Optimization","authors":"Sarah A. Mohammed Al-Taie, B. Khaleel","doi":"10.3311/ppee.22767","DOIUrl":"https://doi.org/10.3311/ppee.22767","url":null,"abstract":"Palm print recognition is a rapidly evolving area in the field of biometrics, providing a high level of security for various applications Advances in scanning technology and software have led to faster and more accurate palm print analysis, we have proposed in this paper a system for palm recognition using the Dolphin Optimization Algorithm (DOA) as a computational technique inspired by nature aimed at solving complex improvement problems. We reduced the number of image features using the Histograms of oriented gradients (HOG) algorithm, we named this method as (DOA) and we also proposed a hybrid method by integrating the DOA algorithm with the Support Vector Machine (SVM) model to improve prediction accuracy by combining DSA's ability to search for global optimal solutions with the effective classification capabilities of SVM, this allows The hybrid approach creates a robust and the proposed hybrid method was named (SVM-DOA), and we also proposed a hybrid method by integrating the DOA algorithm with fuzzy c – mean (FCM) and we named the proposed hybrid method (DOA-fuzzy membership), we verified the validity of the proposed method on public database images of palm print. experiment show that the average accuracy rate of the dolphin swarm algorithm (DSO) is (96.8%), while the average accuracy rate of the proposed hybrid algorithm (DSO-SVM) is (97.8%), and the average accuracy of the proposed hybrid algorithm (DSO-fuzzy membership) is (98.1%).","PeriodicalId":37664,"journal":{"name":"Periodica polytechnica Electrical engineering and computer science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141383861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Parasitic Loaded Shorting Pin Based Compact Multi-slot LoRa Antenna for Military Application 基于寄生负载短路引脚的紧凑型多插槽 LoRa 天线用于军事应用

Periodica polytechnica Electrical engineering and computer science Pub Date : 2024-05-24 DOI: 10.3311/ppee.23472

Reeta Devi, Pranjal Borah, Santosh Kumar Prasad

引用次数: 0

Voltage Error Estimation-Based Fault Diagnosis Method for Three- phase PWM-inverter in Grid-connected Photovoltaic Power System Without any Over-rating 基于电压误差估计的并网光伏发电系统三相 PWM 逆变器无过评故障诊断方法

Periodica polytechnica Electrical engineering and computer science Pub Date : 2024-05-09 DOI: 10.3311/ppee.23416

Atallah Ouai, L. Mokrani, M. Machmoum, A. Houari

{"title":"Voltage Error Estimation-Based Fault Diagnosis Method for Three- phase PWM-inverter in Grid-connected Photovoltaic Power System Without any Over-rating","authors":"Atallah Ouai, L. Mokrani, M. Machmoum, A. Houari","doi":"10.3311/ppee.23416","DOIUrl":"https://doi.org/10.3311/ppee.23416","url":null,"abstract":"Inverter is an essential component of a grid connected PV system. In fact, an open-switch fault in this power converter could result an important system malfunction and consequently leads to system disconnection. In this context, this paper focuses on the fault-tolerant control of PWM-inverter with redundancy leg for grid-connected PV system. In addition, a fast method of fault detection and compensation is used to maintain the continuous operation of the converter when there is a half-leg open-circuit fault (IGBT+ anti-parallel diode) on one of PWM-inverter legs. Therefore, it can detect this type of fault and compensate it in less than 50 μs by using a time criterion instead of voltage criterion. Also, the fuzzy logic technique is employed to control the active and reactive power injected into the network without exceeding the whole system power capacity limits. Note that, in this study, the active and reactive power references of the chosen operating point (the reactive-to-active power ratio: tgφ = Q/P = 0.19) are based on experimental tests. Simulation results show the feasibility and the effectiveness of the proposed fault diagnosis method in terms of fault detection and service continuity in presence of a half-leg open-circuit fault in PWM-inverter without any over-rating of the PV system components or instability.","PeriodicalId":37664,"journal":{"name":"Periodica polytechnica Electrical engineering and computer science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140997133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing Battery Capacity Estimation Accuracy through the Neural Network Algorithm 通过神经网络算法提高电池容量估算精度

Periodica polytechnica Electrical engineering and computer science Pub Date : 2024-05-09 DOI: 10.3311/ppee.22998

Mouncef El marghichi, Abdelilah Hilali, Azeddine Loulijat

{"title":"Enhancing Battery Capacity Estimation Accuracy through the Neural Network Algorithm","authors":"Mouncef El marghichi, Abdelilah Hilali, Azeddine Loulijat","doi":"10.3311/ppee.22998","DOIUrl":"https://doi.org/10.3311/ppee.22998","url":null,"abstract":"Accurate estimation of battery metrics, such as state of health (SOH), is crucial for effective battery management systems (BMS) due to capacity degradation over time. This paper proposes a methodology to enhance battery capacity estimation accuracy by addressing uncertainties related to state of charge (SOC) estimation and measurement. The methodology employs the Neural Network Algorithm (NNA), an optimization algorithm inspired by artificial neural networks (ANNs). The NNA generates an initial population of pattern solutions and iteratively updates them using a weight matrix, bias operator, and transfer function operator. By combining the advantages of ANNs and optimization techniques, the NNA aims to find an optimal solution considering interdependent variables and incorporating global and local feedbacks. Leveraging the capabilities of the NNA, our objective is to identify the candidate that minimizes a specified cost function, ensuring up-to-date cell capacity through a memory forgetting factor. The algorithm's precision was validated using NASA's Prognostic Data, demonstrating outstanding performance by surpassing two aggressive algorithms in terms of accuracy. In the most severe case scenario, the algorithm achieved a peak error of less than 0.4%. Furthermore, the algorithm consistently demonstrated predictive performance measures that were superior to those of the compared algorithms.","PeriodicalId":37664,"journal":{"name":"Periodica polytechnica Electrical engineering and computer science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140994241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adaptive Hierarchical Fractional-Order Sliding Mode Control Strategy for multi-terminal VSC-HVDC System with Wind Farm 带风电场的多终端 VSC-HVDC 系统的自适应分层分阶滑动模式控制策略

Periodica polytechnica Electrical engineering and computer science Pub Date : 2024-04-03 DOI: 10.3311/ppee.22147

S. S. Biswal, D. Swain, P. Rout, Prakash Kumar Ray, R. K. Jena

{"title":"Adaptive Hierarchical Fractional-Order Sliding Mode Control Strategy for multi-terminal VSC-HVDC System with Wind Farm","authors":"S. S. Biswal, D. Swain, P. Rout, Prakash Kumar Ray, R. K. Jena","doi":"10.3311/ppee.22147","DOIUrl":"https://doi.org/10.3311/ppee.22147","url":null,"abstract":"In this paper, an adaptive hierarchical fractional-order sliding mode controller (AHFSMC) for a multi-terminal Voltage Source Converter (VSC) based High Voltage Direct Current (HVDC) Integrated with a wind farm (WF) system is designed. Multi-terminal VSC-HVDC (MtVDC) connected to wind farms has received several attentions in the power sector because of its numerous benefits. The effectiveness of MtVDC, on the other hand, is dependent on the control scheme used. To achieve this goal, a hierarchical sliding mode control method by fractional-order calculus is used. To ensure the sliding condition, the control signal is determined. The controller parameters are adjusted according to a suitable adaptation method to enhance the proposed controller’s robustness compared to the system uncertainties coefficient. An appropriate Lyapunov-based approach is used to achieve the adaptation rule. This paper discusses a scheme to design additional controllers in MtVDC systems to damp electromechanical oscillations, one of several features of HVDC presently under active study. Numerical simulations validate the proposed control strategy's feasibility and efficiency. This novel approach is employed for the upgrading of system stability with the dynamic properties of the MtVDC in a variety of operative conditions.","PeriodicalId":37664,"journal":{"name":"Periodica polytechnica Electrical engineering and computer science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140747401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Direct Drive Permanent Magnet Synchronous Generator: Design, Modeling, and Control for Wind Energy Applications 直接驱动永磁同步发电机：风能应用的设计、建模和控制

Periodica polytechnica Electrical engineering and computer science Pub Date : 2024-04-03 DOI: 10.3311/ppee.23602

Zina Larabi, K. Ghedamsi, D. Aouzellag

{"title":"Direct Drive Permanent Magnet Synchronous Generator: Design, Modeling, and Control for Wind Energy Applications","authors":"Zina Larabi, K. Ghedamsi, D. Aouzellag","doi":"10.3311/ppee.23602","DOIUrl":"https://doi.org/10.3311/ppee.23602","url":null,"abstract":"The prominent trend in wind turbine technology centers on the adoption of direct-drive permanent magnet synchronous generators (DD-PMSG), a choice driven by their capacity to deliver superior efficiency through the elimination of gearboxes.This paper presents a comprehensive exploration of the design, modeling, and control aspects of a DD-PMSG intended for harnessing wind energy conversion. Initially, the geometrical design of the generator is meticulously carried out, adhering to predefined technical specifications and constraints. Subsequently, an in-depth internal modeling, focusing on the electromagnetic behavior of the designed generator, is executed using finite element analysis (FEA) through the Ansys Maxwell RMXpert software. Finally, the external modeling and control system integration of the designed generator, connected to the grid through power electronic converters, are simulated using the Matlab/Simulink software suite. The resulting findings underscore the efficacy and viability of the proposed generator for wind turbine applications, affirming its potential to enhance wind energy conversion systems.","PeriodicalId":37664,"journal":{"name":"Periodica polytechnica Electrical engineering and computer science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140749300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multiband SINC-slotted Patch Antenna for 5G Applications 用于 5G 应用的多频带 SINC 槽式贴片天线

Periodica polytechnica Electrical engineering and computer science Pub Date : 2024-03-05 DOI: 10.3311/ppee.23634

Qusai H. Sultan, A. Sabaawi

{"title":"Multiband SINC-slotted Patch Antenna for 5G Applications","authors":"Qusai H. Sultan, A. Sabaawi","doi":"10.3311/ppee.23634","DOIUrl":"https://doi.org/10.3311/ppee.23634","url":null,"abstract":"In this work, we presented the design, analysis and optimization of the multiband slotted antennas based on SINC function for 5G applications. The proposed antennas are designed and modelled by CST Studio Suite software. A parametric study is performed to determine sinc function parameters that control the performance of the proposed antenna. The parametric study is implemented by varying the amplitude of the sinc function, the frequency, the location of the slot along Y-axis, the slot width and the slot window (number of cycles). The simulated results showed that the designed slotted antennas in this paper exhibits multiband operation and they offer the feasibility of controlling and adjusting the resonant frequency by changing the sinc function parameters. The proposed antennas have various resonant frequencies at around 1.5 GHz, 2.65 GHz, 5 GHz and 5.8 GHz covering the 5G sub-6 GHz band. Extensive simulation process were carried out to determine the optimum antenna performance and three antennas were selected based on the reflection characteristics and number of operation frequency bands. Finally, the three selected antennas were manufactured and their performance were measured in the lab for validation. Experimental results showed that an excellent agreement between the measured and simulated results was achieved.","PeriodicalId":37664,"journal":{"name":"Periodica polytechnica Electrical engineering and computer science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140079200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0