IEEE Open Journal of Industry Applications最新文献_第8页

Analytical Design of Self-Sensing Control for PMSM Using Quasi-Direct Calculation 基于准直接计算的永磁同步电机自感控制分析设计

IEEE Open Journal of Industry Applications Pub Date : 2023-03-16 DOI: 10.1109/OJIA.2023.3276820

Niklas Himker;Axel Mertens

引用次数: 3

Determining the Control Objectives of a Switched Reluctance Machine for Performance Improvement in Generating Mode 确定开关磁阻电机的控制目标以提高发电模式下的性能

IEEE Open Journal of Industry Applications Pub Date : 2023-03-13 DOI: 10.1109/OJIA.2023.3256364

Ahsan Zahid;Berker Bilgin

引用次数: 2

First-Order-Delay-Controlled Slip-Angular Frequency for the Dynamic Performance of an Indirect-Field-Orientation-Controlled Induction Motor-Driving Inertial Load 间接场定向控制感应电机驱动惯性负载动态性能的一阶延迟控制滑移角频率

IEEE Open Journal of Industry Applications Pub Date : 2023-03-12 DOI: 10.1109/OJIA.2023.3275645

Masaki Nagataki;Keiichiro Kondo;Osamu Yamazaki;Kazuaki Yuki

引用次数: 0

Dynamic Phasor Finite-Element Modeling of a DFIG for Grid Connection Studies 用于并网研究的DFIG的动态相量有限元建模

IEEE Open Journal of Industry Applications Pub Date : 2023-03-10 DOI: 10.1109/OJIA.2023.3254669

Mohamed A. Almozayen;Andrew M. Knight

{"title":"Dynamic Phasor Finite-Element Modeling of a DFIG for Grid Connection Studies","authors":"Mohamed A. Almozayen;Andrew M. Knight","doi":"10.1109/OJIA.2023.3254669","DOIUrl":"https://doi.org/10.1109/OJIA.2023.3254669","url":null,"abstract":"Cosimulation studies of electric power systems and electric machines have always been a challenge. In order to reduce the simulation time to a reasonable value, lumped-parameter electric machine models are commonly used in electric power system modeling software packages to avoid the heavy computational burden of more accurate modeling methods especially finite-element method (FEM) on the expense of less accuracy. The proposed technique in this article combines the dynamic phasor modeling technique for power system simulations with the FEM to accurately model the doubly fed induction generator while connected to the grid. The utilization of dynamic phasors enables adopting large simulation time steps resulting in a significant reduction in the simulation time compared to the conventional time-domain FEM modeling. The mathematical foundation of the proposed modeling method is presented including the generator's core saturation. Custom-written C++ codes have been developed by the authors to execute the new dynamic phasor FEM algorithm and the conventional time-domain FEM in order to fairly compare their accuracy and numerical performances. As the proposed method combines time and frequency domains, a unique capability of modeling the rotor movement can be achieved. The rotation can be represented by physically incrementing the rotor and airgap mesh as in regular time-domain solvers, by mathematically representing the rotation using the virtual blocked rotor method as in frequency-domain solvers, and the proposed method of combining the two aforementioned approaches. The three methods of modeling rotor rotation are discussed, and their simulation results are compared to give a guide to choose the proper method for the different modeling targets. The results show that the proposed dynamic phasor FEM is capable of producing comparable results to the traditional time-domain solver at a substantially reduced simulation time.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"4 ","pages":"87-98"},"PeriodicalIF":0.0,"publicationDate":"2023-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/8782707/10008994/10065513.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50350790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Three-Phase Four-Wire Inverter for Grid Emulator Under Wide Inductance Variation to Evaluate the Performance of Distributed Generator 用于电网仿真的三相四线制逆变器在宽电感变化下评估分布式发电机性能

IEEE Open Journal of Industry Applications Pub Date : 2023-02-27 DOI: 10.1109/OJIA.2023.3250027

Tsai-Fu Wu;Yun-Hsiang Chang;Chien-Chih Hung;Jui-Yang Chiu

引用次数: 0

IEEE Industry Applications Society Information IEEE行业应用协会信息

IEEE Open Journal of Industry Applications Pub Date : 2023-02-22 DOI: 10.1109/OJIA.2022.3232253

引用次数: 0

Faulty Residential Circuit Breakers—A Persistent Fire Safety Problem 住宅断路器故障——一个持续存在的消防安全问题

IEEE Open Journal of Industry Applications Pub Date : 2023-01-18 DOI: 10.1109/OJIA.2023.3237956

Jesse Aronstein

{"title":"Faulty Residential Circuit Breakers—A Persistent Fire Safety Problem","authors":"Jesse Aronstein","doi":"10.1109/OJIA.2023.3237956","DOIUrl":"https://doi.org/10.1109/OJIA.2023.3237956","url":null,"abstract":"Circuit breakers for residential branch circuits must trip at or below 135% of rated current. A breaker that fails that requirement is defective. Samples of two brands, purchased from retail sources, are tested for that basic calibration. Both brands were tested 4 years ago. Previous samples of one brand were 50% defective, and new samples manufactured in 2021 are 28% defective. The second brand, previously defect-free, is again defect-free. The test results, past and present, imply that some manufacturers are calibrating breakers to trip too close to the allowable upper current limit, and are checking calibration by testing at higher current. The standard calibration test at 200% of rated current is shown to be incapable of indicating whether or not a breaker will trip properly, as required by the applicable standard, at 135% of rated current. A third brand tested came on the market recently. Its thermal-magnetic breakers trip correctly, but the brand's hydraulic-magnetic breakers are erratic, with 38% of the samples malfunctioning. The malfunctions are attributed to thermal distortion that causes mechanical binding of the triggering mechanism. Some breaker brands with a high defect rate have been in the distribution chain for many years and are permanently installed in homes. The increased risk of fire and injury for the occupants of these dwellings is significant. The long-standing history of this problem and the fire safety consequences are discussed.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"4 ","pages":"75-86"},"PeriodicalIF":0.0,"publicationDate":"2023-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/8782707/10008994/10021241.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50350751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental Verification of Passive Axial Electrodynamic Suspension in a Bearingless Motor 无轴承电机被动轴向电动悬架的实验验证

IEEE Open Journal of Industry Applications Pub Date : 2023-01-18 DOI: 10.1109/OJIA.2023.3236984

GUILHERME CAVALCANTE RUBIO;VISHNU C. HOTHUR KOMAL;YUSUKE FUJII;AKIRA CHIBA

{"title":"Experimental Verification of Passive Axial Electrodynamic Suspension in a Bearingless Motor","authors":"GUILHERME CAVALCANTE RUBIO;VISHNU C. HOTHUR KOMAL;YUSUKE FUJII;AKIRA CHIBA","doi":"10.1109/OJIA.2023.3236984","DOIUrl":"https://doi.org/10.1109/OJIA.2023.3236984","url":null,"abstract":"This article investigates a bearingless motor with passive electrodynamic axial suspension. The axial suspension force is generated by a specific coil configuration called a figure-eight coil. Radial directions and tilting angles are stabilized by passive permanent magnet bearings. Since axial electrodynamic force increases with rotational speed, it must overcome a certain minimum threshold speed to compensate for the rotor weight and the unstable axial force caused by the permanent magnet bearing. Theoretical equations are derived for the braking torque caused by the suspension current and for the steady-state axial equilibrium position at constant rotational speed. A method based on the braking torque equation is proposed for correcting the mismatch between the magnetic center of the bearingless motor and the middle point of the axial clearance. This method sets the middle point between upper and lower touchdown positions in the same place where the motor current is minimum during passive axial suspension. Axial suspension is confirmed in the experiment with a noncontact laser sensor.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"4 ","pages":"49-59"},"PeriodicalIF":0.0,"publicationDate":"2023-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/8782707/10008994/10019578.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50350749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 High-Efficiency Low-Wearing Hybrid Voltage Regulator for Utility Applications 一种适用于公用事业的高效低损耗混合电压调节器

IEEE Open Journal of Industry Applications Pub Date : 2023-01-17 DOI: 10.1109/OJIA.2023.3237732

Yafeng Wang;Tiefu Zhao

{"title":"A High-Efficiency Low-Wearing Hybrid Voltage Regulator for Utility Applications","authors":"Yafeng Wang;Tiefu Zhao","doi":"10.1109/OJIA.2023.3237732","DOIUrl":"https://doi.org/10.1109/OJIA.2023.3237732","url":null,"abstract":"Step voltage regulator (SVR) has been utilized in power distribution systems for decades as the voltage regulation device. Due to the increasing integration of distributed energy resources, the conventional SVR is severely challenged by the modern power distribution pattern with high renewable energy penetration. The induced arc from the conventional SVR tap change and more frequent tap changes due to voltage instability from the renewable energy impose constraints on the conventional SVRs lifetime. Meanwhile, the conventional SVR device cannot regulate the voltage accurately since the SVR regulates the voltage step-by-step. This article proposed a hybrid voltage regulator with high-efficiency and low contact wearing, which can achieve arcless tap change and stepless voltage regulation by using a fractionally rated back-to-back power converter. The accurate load voltage regulation is guaranteed, while the tap changer mechanism remains in the system, which helps to promote the upgrade to the existing power distribution systems. The power converter capacity in the proposed topology is only 0.31% of the distribution transformer rating to achieve a stepless voltage regulation range of ±10%, significantly reducing the system cost compared with the full power electronics solutions and projects high total system efficiency. The proposed hybrid voltage regulator was simulated and experimentally validated. The experimental results demonstrate arcless tap change operation and stepless voltage regulation. Collaborative operation between the conventional mechanical tap change and the power converter operation is also demonstrated to acquire large voltage regulation with fast-acting voltage control.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"4 ","pages":"60-74"},"PeriodicalIF":0.0,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/8782707/10008994/10018870.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50350750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

IEEE Open Journal of Industry Applications Information for Authors IEEE工业应用开放期刊作者信息

IEEE Open Journal of Industry Applications Pub Date : 2023-01-11 DOI: 10.1109/OJIA.2022.3232255

引用次数: 0