2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)最新文献_第6页

Indirect estimation of the Yaw-Angle misalignment in a horizontal axis wind turbine 水平轴风力机偏航角偏差的间接估计

2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED) Pub Date : 2017-08-01 DOI: 10.1109/DEMPED.2017.8062332

E. Tsioumas, N. Karakasis, N. Jabbour, C. Mademlis

{"title":"Indirect estimation of the Yaw-Angle misalignment in a horizontal axis wind turbine","authors":"E. Tsioumas, N. Karakasis, N. Jabbour, C. Mademlis","doi":"10.1109/DEMPED.2017.8062332","DOIUrl":"https://doi.org/10.1109/DEMPED.2017.8062332","url":null,"abstract":"This paper deals with the problem of the yaw angle misalignment in a wind turbine of horizontal axis type and proposes a novel technique for indirectly estimating it. Thus, accurate yaw control can be attained because it is not affected by the inaccuracies that are caused by the vortex flow downstream of the blades which highly influences the wind direction measurement obtained by sensors located at the back end of the nacelle. Furthermore, the proposed technique is cost-effective because, it is not needed the more accurate but highly expensive remote sensing devices. Although it is more suitable for large wind turbines because higher power increase can be accomplished by an accurate yaw control, due to the low cost it can be used in small wind turbines. Thus, it can be applied to any type of power range wind turbines and any type of electrical generators. The practicality and effectiveness of the suggested technique have been verified through simulation analysis conducted by Matlab/Simulink and experimentally on a low power scaling real wind turbine. Several simulation and experimental results have been included in the paper in order to demonstrate the above achievements of the proposed yaw control technique.","PeriodicalId":325413,"journal":{"name":"2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122805472","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: 5

Online estimation of remaining useful life of stator insulation 定子绝缘剩余使用寿命的在线估计

2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED) Pub Date : 2017-08-01 DOI: 10.1109/DEMPED.2017.8062421

W. R. Jensen, E. Strangas, Shanelle N. Foster

{"title":"Online estimation of remaining useful life of stator insulation","authors":"W. R. Jensen, E. Strangas, Shanelle N. Foster","doi":"10.1109/DEMPED.2017.8062421","DOIUrl":"https://doi.org/10.1109/DEMPED.2017.8062421","url":null,"abstract":"Wide bandgap semiconductor devices in machine drive topologies are becoming more prevalent. These devices improve efficiency and can operate at higher switching frequencies. However, higher switching frequencies will increase the electrical stress applied to the insulation of the machine. Electrical stress, excessive heating, mechanical vibrations, and environmental contamination are leading factors that contribute to insulation degradation. Breakdown of the insulation will lead to a short circuit fault between two conductors. Short circuit faults can quickly propagate and lead to catastrophic failure. This project proposes an online method to accurately predict the remaining useful life (RUL) of the stator insulation by monitoring a trend in the leakage current. As the insulation degrades, the magnitude of the overshoot in the transient response of the leakage current exponentially decreases. An analog peak detection circuit is used to acquire this magnitude using low frequency sampling. An Extended Kalman Filter is applied to predict the RUL of the insulation. The proposed strategy will improve machine reliability, especially when using wide bandgap devices, while not requiring expensive or special equipment for assessing the health of the insulation.","PeriodicalId":325413,"journal":{"name":"2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127623104","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: 2

Partial discharge detection in medium voltage stators using an antenna 用天线检测中压定子的局部放电

2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED) Pub Date : 2017-08-01 DOI: 10.1109/DEMPED.2017.8062398

A. Bhure, E. Strangas, J. Agapiou, Ronald M. Lesperance

{"title":"Partial discharge detection in medium voltage stators using an antenna","authors":"A. Bhure, E. Strangas, J. Agapiou, Ronald M. Lesperance","doi":"10.1109/DEMPED.2017.8062398","DOIUrl":"https://doi.org/10.1109/DEMPED.2017.8062398","url":null,"abstract":"Partial Discharges, if initiated give rise to progressive deterioration of insulation material and lowers its life expectancy. If allowed to persist further, PD can even lead to the electric breakdown of insulation. However, in spite of its damaging effects on machine insulation, its application during the production phase of machines, to avoid their permanent failure has gained importance in this research field. This paper discusses a Partial Discharge detection technique developed for medium voltage stator insulation utilizing an antenna to sense the discharge currents and record PD events produced inside a stator insulation. To reduce the effect of noise on detections process, some grounding techniques incorporated and later Undecimated Discrete Wavelet Transform was used to extract the discharge events from antenna output. To extract the best out of the technique, outputs were analyzed on a repetitive basis to make a confident decision on the presence of PD. This technique of detecting PD shows high sensitivity, as the detections are independent of the impedance of test setup used for experiments.","PeriodicalId":325413,"journal":{"name":"2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127743293","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: 6

Broken rotor bar detection in inverter-fed induction motors by time-corrected instantaneous frequency spectrogram 用时间校正瞬时频谱图检测变频异步电动机转子断条

2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED) Pub Date : 2017-08-01 DOI: 10.1109/DEMPED.2017.8062368

A. García-Perez, R. Romero-Troncoso, D. Camarena-Martinez, R. Osornio-Rios, J. Amezquita-Sanchez

{"title":"Broken rotor bar detection in inverter-fed induction motors by time-corrected instantaneous frequency spectrogram","authors":"A. García-Perez, R. Romero-Troncoso, D. Camarena-Martinez, R. Osornio-Rios, J. Amezquita-Sanchez","doi":"10.1109/DEMPED.2017.8062368","DOIUrl":"https://doi.org/10.1109/DEMPED.2017.8062368","url":null,"abstract":"Fault detection in induction motors in non-stationary regimes managed by inverters is an existing industrialized demand. Inverter-fed machines have being used due to their adjustable velocity and quick dynamic response, although the injection of objectionable frequency components. The condition monitoring of these motors can significantly reduce the cost of maintenance in the early detection of faults. Under this special performing situation, many of the identification methods researched have problems in distinguishing induction motor failures. This paper introduces an identification methodology founded on the mixed handling of two techniques: Time-corrected instantaneous frequency and the Spectrogram, also known as reassigned spectrogram, where a thresholding is used so that any element with values smaller than the signal-noise-rate are set to zero, and the noise is reduced in the final spectrogram. The suggested method is tested in an inverter-fed induction motor at the time of startup continue by a steady-state condition. It was confirmed its effectiveness to find one broken rotor bar. From the obtained results, the suggested method confirms to be precise enough to identify the failure progression in the time-frequency domain under various operating conditions (startup and steady-state conditions) in inverter-fed induction motors.","PeriodicalId":325413,"journal":{"name":"2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126898566","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: 9

Impact of bending speed and setup on flex cracks in multilayer ceramic capacitors 弯曲速度和设置对多层陶瓷电容器弯曲裂纹的影响

2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED) Pub Date : 2017-08-01 DOI: 10.1109/DEMPED.2017.8062417

C. Andersson, O. Kristensen, E. Varescon, F. Iannuzzo

引用次数: 1

Improved monitoring and battery equalizer control scheme for electric vehicle applications 改进的监测和电池均衡器控制方案的电动汽车应用

2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED) Pub Date : 2017-08-01 DOI: 10.1109/DEMPED.2017.8062383

N. Jabbour, E. Tsioumas, N. Karakasis, C. Mademlis

{"title":"Improved monitoring and battery equalizer control scheme for electric vehicle applications","authors":"N. Jabbour, E. Tsioumas, N. Karakasis, C. Mademlis","doi":"10.1109/DEMPED.2017.8062383","DOIUrl":"https://doi.org/10.1109/DEMPED.2017.8062383","url":null,"abstract":"This paper proposes an improved battery management system (BMS) that provides supervisory monitoring and active cell-to-cell equalization in order to protect the battery lifespan in an electric vehicle (EV). This can be accomplished through a Supercapacitor (SC) bank that can store and then recover electric energy to any weak cell of the EV battery bank. Specifically, the proposed control scheme online detects any problematic battery cell through a supervisory monitoring scheme that oversees the main monitoring system of battery pack. Then, a matrix power switches system connects the SC-bank in parallel with the problematic cell, in order to attain voltage equalization with the other battery cells. Moreover, urgent energy assistance is provided to any weak cells in case of high dynamic conditions, by aiming to keep their voltage as close as possible to the voltage of the other series connected cell unites. The SC-bank is connected to a problematic battery cell through a bidirectional non-isolated dc-dc converter. The functionality and the effectiveness of the proposed supervisory monitoring and battery equalizer system in an EV have been verified by simulations with Matlab/Simulink. Thus, selective simulation results are presented in order to validate the operational improvements obtained by the suggested control scheme.","PeriodicalId":325413,"journal":{"name":"2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131984216","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: 4

On-line stator fault diagnosis in switched reluctance motors 开关磁阻电机定子故障在线诊断

2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED) Pub Date : 2017-08-01 DOI: 10.1109/DEMPED.2017.8062380

D. Fonseca, A. Cardoso

引用次数: 6

Bearing fault diagnosis based on Lasso regularization method 基于Lasso正则化方法的轴承故障诊断

2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED) Pub Date : 2017-08-01 DOI: 10.1109/DEMPED.2017.8062376

Ó. Duque-Pérez, C. Del Pozo-Gallego, D. Sotelo, W. Godoy

引用次数: 5

A fast, precise and low cost stator inter-turn fault diagnosis technique for wound rotor induction motors based on wavelet transform of rotor current 基于转子电流小波变换的绕线转子异步电动机定子匝间故障快速、精确、低成本诊断技术

2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED) Pub Date : 2017-08-01 DOI: 10.1109/DEMPED.2017.8062364

M. Keravand, J. Faiz, Milad Soleimani, M. Ghasemi-Bijan, Mohsen Bandar-Abadi, S. Cruz

引用次数: 8

Identification and localization of incipient intermittent inter-turn fault in the stator of a three phase permanent magnet synchronous motor 三相永磁同步电动机定子初期断续匝间故障的识别与定位

2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED) Pub Date : 2017-08-01 DOI: 10.1109/DEMPED.2017.8062352

Najla Haje Obeid, A. Battiston, T. Boileau, B. Nahid-Mobarakeh

引用次数: 6