Pub Date : 2012-11-12DOI: 10.1109/ECCE.2012.6342533
A. Paquette, M. Reno, R. Harley, D. Divan
When inverters in voltage control mode are paired with synchronous generators they exhibit poor transient load sharing in islanded operation. The inverter initially picks up the majority of every load step, and the generator's output slowly increases until they reach their steady state load sharing given by droop settings. This excessive transient power output from the inverter constrains its rating compared to the largest anticipated load step, and could negatively impact battery life in battery energy storage inverters. This paper examines the transient load sharing characteristics between synchronous generators and inverters in voltage control, i.e. grid-supporting-grid-forming control, and investigates methods to improve it. An equivalent circuit is proposed to describe the initial power sharing ratio, and the effects of increased inverter droop slope and increased governor integral gain are investigated. An inverter control strategy of emulating a synchronous generator is shown to provide good transient load sharing. Validation is provided by simulation and experimental results for real and reactive loads.
{"title":"Transient load sharing between inverters and synchronous generators in islanded microgrids","authors":"A. Paquette, M. Reno, R. Harley, D. Divan","doi":"10.1109/ECCE.2012.6342533","DOIUrl":"https://doi.org/10.1109/ECCE.2012.6342533","url":null,"abstract":"When inverters in voltage control mode are paired with synchronous generators they exhibit poor transient load sharing in islanded operation. The inverter initially picks up the majority of every load step, and the generator's output slowly increases until they reach their steady state load sharing given by droop settings. This excessive transient power output from the inverter constrains its rating compared to the largest anticipated load step, and could negatively impact battery life in battery energy storage inverters. This paper examines the transient load sharing characteristics between synchronous generators and inverters in voltage control, i.e. grid-supporting-grid-forming control, and investigates methods to improve it. An equivalent circuit is proposed to describe the initial power sharing ratio, and the effects of increased inverter droop slope and increased governor integral gain are investigated. An inverter control strategy of emulating a synchronous generator is shown to provide good transient load sharing. Validation is provided by simulation and experimental results for real and reactive loads.","PeriodicalId":6401,"journal":{"name":"2012 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"4 1","pages":"2735-2742"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82854256","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}
Pub Date : 2012-11-12DOI: 10.1109/ECCE.2012.6342445
G. Karimi-Moghaddam, R. Gould, S. Madhusoodhanan, K. Hatua, S. Bhattacharya, S. Leslie, S. Ryu, M. Das, A. Agarwal, D. Grider
Transformer less Intelligent Power Substation (TIPS) is a solid state replacement for the conventional bulky distribution transformers used for 13.8kV and 480V grid interconnectivity. A 100kVA 3L NPC converter is being built using 12kV SiC n-IGBT for the high voltage grid interface. In this paper, detailed thermal behavior of this converter is studied for optimum thermal design. The thermal profile at the die level at different power factor of operation is studied. This study helps the optimum component placement in the converter. Also it shows that the operating modes of the converter play a key role in optimum thermal design.
无变压器智能变电站(TIPS)是用于13.8kV和480V电网互联的传统笨重配电变压器的固态替代品。一个100kVA 3L NPC变换器正在建造中，使用12kV SiC n-IGBT作为高压电网接口。本文对该转炉的详细热行为进行了研究，以进行最佳热设计。研究了不同工作功率因数下模具层的热分布。该研究有助于优化元件在变流器中的位置。结果表明，转炉的工作方式对优化热设计起着关键作用。
{"title":"Thermal design considerations for 12kV SiC n-IGBT based 3L NPC converter","authors":"G. Karimi-Moghaddam, R. Gould, S. Madhusoodhanan, K. Hatua, S. Bhattacharya, S. Leslie, S. Ryu, M. Das, A. Agarwal, D. Grider","doi":"10.1109/ECCE.2012.6342445","DOIUrl":"https://doi.org/10.1109/ECCE.2012.6342445","url":null,"abstract":"Transformer less Intelligent Power Substation (TIPS) is a solid state replacement for the conventional bulky distribution transformers used for 13.8kV and 480V grid interconnectivity. A 100kVA 3L NPC converter is being built using 12kV SiC n-IGBT for the high voltage grid interface. In this paper, detailed thermal behavior of this converter is studied for optimum thermal design. The thermal profile at the die level at different power factor of operation is studied. This study helps the optimum component placement in the converter. Also it shows that the operating modes of the converter play a key role in optimum thermal design.","PeriodicalId":6401,"journal":{"name":"2012 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"49 1","pages":"2180-2186"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90719769","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}
Pub Date : 2012-11-12DOI: 10.1109/ECCE.2012.6342697
A. Fernández, H. Carbonnier, O. Mourra, F. Tonicello
Satellite power systems are generally based on non isolated topologies. Simplicity, robustness and high efficiency are the key parameters and hence, these topologies are the leaders. However, extra switches are needed for protection; the design of the MOSFET drivers is not so simple if a full excursion from 0% to 100% is needed; the design has to be changed accordingly with the design of the solar array. An alternative concept is proposed in this paper and is based on topologies with transformer. Less switches are needed for protection and just by changing the transformer turns ratio, the converter can accommodate different designs of solar arrays. The main drawback is the efficiency, which is a key player in the space power systems. To overcome this, a Synchronous Rectification system is proposed in order to boost the efficiency with respect to the diode version counterpart. A new system based on the output inductor waveforms is also proposed in this paper.
{"title":"28V bus solar array regulator based on converters with transformer and self-driven Synchronous Rectification","authors":"A. Fernández, H. Carbonnier, O. Mourra, F. Tonicello","doi":"10.1109/ECCE.2012.6342697","DOIUrl":"https://doi.org/10.1109/ECCE.2012.6342697","url":null,"abstract":"Satellite power systems are generally based on non isolated topologies. Simplicity, robustness and high efficiency are the key parameters and hence, these topologies are the leaders. However, extra switches are needed for protection; the design of the MOSFET drivers is not so simple if a full excursion from 0% to 100% is needed; the design has to be changed accordingly with the design of the solar array. An alternative concept is proposed in this paper and is based on topologies with transformer. Less switches are needed for protection and just by changing the transformer turns ratio, the converter can accommodate different designs of solar arrays. The main drawback is the efficiency, which is a key player in the space power systems. To overcome this, a Synchronous Rectification system is proposed in order to boost the efficiency with respect to the diode version counterpart. A new system based on the output inductor waveforms is also proposed in this paper.","PeriodicalId":6401,"journal":{"name":"2012 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"62 1","pages":"1088-1094"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90736430","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}
Pub Date : 2012-11-12DOI: 10.1109/ECCE.2012.6342396
Jae Suk Lee, Robert D. Lorenz, M. A. Valenzuela
This paper presents time optimal control of an interior permanent magnet synchronous machine (IPMSM) in voltage- and current- limited conditions using deadbeat-direct torque and flux control (DB-DTFC). A commanded air-gap torque and flux can be achieved by the end of each PWM period using DB-DTFC. However, it may take several PWM periods to achieve a desired torque that is physically infeasible in one step when operating near the voltage limit. The large torque command can be shaped as a feasible trajectory so that the deadbeat torque and flux is achieved for every sample time instant (switching period) along the trajectory. In this paper, the feasible trajectory is dynamically optimized to achieve a large torque command in the shortest time during voltage- and current-limited operation. Loss minimizing stator flux linkage is used during steady state operation to reduce computational complexity of the dynamic optimization and to operate the IPMSM at the loss minimizing condition. The voltage- and current-limited operation of IPMSM drives is evaluated in both simulation and experiment in this paper.
{"title":"Time optimal and loss minimizing deadbeat-direct torque and flux control for interior permanent magnet synchronous machines","authors":"Jae Suk Lee, Robert D. Lorenz, M. A. Valenzuela","doi":"10.1109/ECCE.2012.6342396","DOIUrl":"https://doi.org/10.1109/ECCE.2012.6342396","url":null,"abstract":"This paper presents time optimal control of an interior permanent magnet synchronous machine (IPMSM) in voltage- and current- limited conditions using deadbeat-direct torque and flux control (DB-DTFC). A commanded air-gap torque and flux can be achieved by the end of each PWM period using DB-DTFC. However, it may take several PWM periods to achieve a desired torque that is physically infeasible in one step when operating near the voltage limit. The large torque command can be shaped as a feasible trajectory so that the deadbeat torque and flux is achieved for every sample time instant (switching period) along the trajectory. In this paper, the feasible trajectory is dynamically optimized to achieve a large torque command in the shortest time during voltage- and current-limited operation. Loss minimizing stator flux linkage is used during steady state operation to reduce computational complexity of the dynamic optimization and to operate the IPMSM at the loss minimizing condition. The voltage- and current-limited operation of IPMSM drives is evaluated in both simulation and experiment in this paper.","PeriodicalId":6401,"journal":{"name":"2012 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"474 1","pages":"2568-2575"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90996842","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}
Pub Date : 2012-11-12DOI: 10.1109/ECCE.2012.6342636
X. Fonteneau, F. Morel, H. Morel, P. Lahaye, E. Rondon-Pinilla
This document shows the behaviour of a SiC switch built with Normally-Off JFETs and a Schottky diode when the JFETs are controlled with a constant gate-to-source voltage or with a constant gate current. The JFETs are used in a direct and reverse conduction. The goal of this study is to determine a gate driver signal that minimizes static losses in the switch in spite of temperature variations. Two switches are tested: the first one is built with one JFET and one diode, the second one is built with four JFETs and one diode. It has been shown that in both cases, when reverse conduction is used, a current controlled gate driver leads to lower static losses.
{"title":"Impact of gate driver signal on static losses for a SiC switch built with Normally-Off JFETs and a Schottky diode","authors":"X. Fonteneau, F. Morel, H. Morel, P. Lahaye, E. Rondon-Pinilla","doi":"10.1109/ECCE.2012.6342636","DOIUrl":"https://doi.org/10.1109/ECCE.2012.6342636","url":null,"abstract":"This document shows the behaviour of a SiC switch built with Normally-Off JFETs and a Schottky diode when the JFETs are controlled with a constant gate-to-source voltage or with a constant gate current. The JFETs are used in a direct and reverse conduction. The goal of this study is to determine a gate driver signal that minimizes static losses in the switch in spite of temperature variations. Two switches are tested: the first one is built with one JFET and one diode, the second one is built with four JFETs and one diode. It has been shown that in both cases, when reverse conduction is used, a current controlled gate driver leads to lower static losses.","PeriodicalId":6401,"journal":{"name":"2012 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"1 1","pages":"1503-1508"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89690614","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}
Pub Date : 2012-11-12DOI: 10.1109/ECCE.2012.6342213
G. Hsieh, Chengxin Su, Hung-I Hsieh
This paper presents a power management for a photovoltaic (PV) and fuel cell (FC) hybrid system that complementarily dispatches energies into a constant-power-demand DC bus (DCB) through a boost current (BCC) and Z-source voltage (ZSVC) converters. A novel power-increment-aided maximum power point tracking (PI-INC MPPT) with a duty detection is used to guide the PV-BCC to pump PV energy fast and accurate as well as provide a burst regulation to FC-ZSVC for quick energy dispatch. Accordingly, the feed-in PV energy is priority for hybrid in consideration of energy treasuring. An experiment presents the mutual energy dispatch behavior between PV and FC for a down-scale constant 250-W DCB under different solar insolation tests.
{"title":"Power management of photovoltaic and fuel cell hybrid system for a constant-power-demand DC supply bus using complementary energy dispatch","authors":"G. Hsieh, Chengxin Su, Hung-I Hsieh","doi":"10.1109/ECCE.2012.6342213","DOIUrl":"https://doi.org/10.1109/ECCE.2012.6342213","url":null,"abstract":"This paper presents a power management for a photovoltaic (PV) and fuel cell (FC) hybrid system that complementarily dispatches energies into a constant-power-demand DC bus (DCB) through a boost current (BCC) and Z-source voltage (ZSVC) converters. A novel power-increment-aided maximum power point tracking (PI-INC MPPT) with a duty detection is used to guide the PV-BCC to pump PV energy fast and accurate as well as provide a burst regulation to FC-ZSVC for quick energy dispatch. Accordingly, the feed-in PV energy is priority for hybrid in consideration of energy treasuring. An experiment presents the mutual energy dispatch behavior between PV and FC for a down-scale constant 250-W DCB under different solar insolation tests.","PeriodicalId":6401,"journal":{"name":"2012 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"46 1","pages":"4471-4478"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89249728","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}
Pub Date : 2012-11-12DOI: 10.1109/ECCE.2012.6342602
Jiyao Wang, Yehui Han
This paper investigates the concept of using matrix transformers to achieve renewable energy integration. Matrix transformers can provide great design flexibility because they can be compatible with a variety of renewable energy sources as well as energy storage devices. Several key techniques raised by this concept are illustrated, and a high efficiency multiple-input and single output converter was designed to show how to use matrix transformers. Simulation and experimental results are presented that validate the approach presented in this paper.
{"title":"Matrix transformers for renewable energy integration","authors":"Jiyao Wang, Yehui Han","doi":"10.1109/ECCE.2012.6342602","DOIUrl":"https://doi.org/10.1109/ECCE.2012.6342602","url":null,"abstract":"This paper investigates the concept of using matrix transformers to achieve renewable energy integration. Matrix transformers can provide great design flexibility because they can be compatible with a variety of renewable energy sources as well as energy storage devices. Several key techniques raised by this concept are illustrated, and a high efficiency multiple-input and single output converter was designed to show how to use matrix transformers. Simulation and experimental results are presented that validate the approach presented in this paper.","PeriodicalId":6401,"journal":{"name":"2012 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"34 1","pages":"1739-1745"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89386530","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}
Pub Date : 2012-11-12DOI: 10.1109/ECCE.2012.6342451
T. Kamel, C. Diduch, Y. Bilestkiy, Liuchen Chang
DC filters are responsible for more than half of the failures in electric power converters. One approach to improving the reliability, performance and maintainability is to include failure diagnosis logic within the power converter. DC bus capacitor failures may be classified as gradual faults caused by capacitor aging and sudden faults which may take the form of breakdown faults resulting from a blown capacitor fuse, and open circuit O-C faults. This paper presents new methods to detect and isolate failures in the DC filters of power converters caused by capacitor aging and O-C faults.
{"title":"Fault diagnoses for the Dc filters of power electronic converters","authors":"T. Kamel, C. Diduch, Y. Bilestkiy, Liuchen Chang","doi":"10.1109/ECCE.2012.6342451","DOIUrl":"https://doi.org/10.1109/ECCE.2012.6342451","url":null,"abstract":"DC filters are responsible for more than half of the failures in electric power converters. One approach to improving the reliability, performance and maintainability is to include failure diagnosis logic within the power converter. DC bus capacitor failures may be classified as gradual faults caused by capacitor aging and sudden faults which may take the form of breakdown faults resulting from a blown capacitor fuse, and open circuit O-C faults. This paper presents new methods to detect and isolate failures in the DC filters of power converters caused by capacitor aging and O-C faults.","PeriodicalId":6401,"journal":{"name":"2012 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"16 1","pages":"2135-2141"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86580967","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}
Pub Date : 2012-11-12DOI: 10.1109/ECCE.2012.6342574
F. Wei, D. Vilathgamuwa, S. S. Choi
During the last few years, there has been an increased attention paid on the developments of DC microgrids (DCMGs) and their applications. For economical and more flexible wind power generation, doubly fed induction generator (DFIG) is regarded as a most commonly used generator in wind farms. This paper presents a configuration and operation method for a DCMG connected with DFIGs, in which the controller of the DFIG is designed for maximum power point tracking (MPPT). The generation of harmonics and their effects on the generator in this configuration are analyzed and a harmonic compensation method is proposed. Furthermore, the simulation results are presented to show that the DFIG can be operated effectively in DCMGs and harmonic currents can be reduced.
{"title":"Mitigation of harmonics of DFIGs in DC-microgrids","authors":"F. Wei, D. Vilathgamuwa, S. S. Choi","doi":"10.1109/ECCE.2012.6342574","DOIUrl":"https://doi.org/10.1109/ECCE.2012.6342574","url":null,"abstract":"During the last few years, there has been an increased attention paid on the developments of DC microgrids (DCMGs) and their applications. For economical and more flexible wind power generation, doubly fed induction generator (DFIG) is regarded as a most commonly used generator in wind farms. This paper presents a configuration and operation method for a DCMG connected with DFIGs, in which the controller of the DFIG is designed for maximum power point tracking (MPPT). The generation of harmonics and their effects on the generator in this configuration are analyzed and a harmonic compensation method is proposed. Furthermore, the simulation results are presented to show that the DFIG can be operated effectively in DCMGs and harmonic currents can be reduced.","PeriodicalId":6401,"journal":{"name":"2012 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"8 1","pages":"1946-1953"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87588809","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}
Pub Date : 2012-11-12DOI: 10.1109/ECCE.2012.6342666
E. Lorenzani, A. Salati, C. Bianchini, F. Immovilli, A. Bellini, S. Lee, J. Yoo, C. Kwon
Double cage induction motors are typically employed in applications that require high starting torque for frequent, loaded starts. This makes the starting (outer) cage susceptible to fatigue failure since it must withstand the large thermo-mechanical stress associated with the high starting current and long acceleration time. Conventional FFT-based spectrum analysis techniques are insensitive to outer cage faults due to the small outer cage current under steady state operation, and the fault indicators and thresholds applied to single cage rotors cannot be used. Therefore, there is a strong industrial need for research and development of analysis techniques and advanced fault detection algorithms for double cage machines. However, there are only a few publications that investigate double cage rotor faults. In this paper, a dynamic model for rotor cage faults in double cage motors, which is the first step towards double cage rotor fault research, is derived. A 7.5 Hp separate end ring fabricated copper double cage rotor is built for experimental verification of the proposed fault model (copper inner cage/brass outer cage). The tests performed under startup and steady state operation show that the proposed fault model can provide sufficient accuracy and can be used as the basis for interpretation of FFT results and development of advanced fault detection algorithms.
{"title":"Dynamic modeling of double cage induction machines for diagnosis of rotor faults","authors":"E. Lorenzani, A. Salati, C. Bianchini, F. Immovilli, A. Bellini, S. Lee, J. Yoo, C. Kwon","doi":"10.1109/ECCE.2012.6342666","DOIUrl":"https://doi.org/10.1109/ECCE.2012.6342666","url":null,"abstract":"Double cage induction motors are typically employed in applications that require high starting torque for frequent, loaded starts. This makes the starting (outer) cage susceptible to fatigue failure since it must withstand the large thermo-mechanical stress associated with the high starting current and long acceleration time. Conventional FFT-based spectrum analysis techniques are insensitive to outer cage faults due to the small outer cage current under steady state operation, and the fault indicators and thresholds applied to single cage rotors cannot be used. Therefore, there is a strong industrial need for research and development of analysis techniques and advanced fault detection algorithms for double cage machines. However, there are only a few publications that investigate double cage rotor faults. In this paper, a dynamic model for rotor cage faults in double cage motors, which is the first step towards double cage rotor fault research, is derived. A 7.5 Hp separate end ring fabricated copper double cage rotor is built for experimental verification of the proposed fault model (copper inner cage/brass outer cage). The tests performed under startup and steady state operation show that the proposed fault model can provide sufficient accuracy and can be used as the basis for interpretation of FFT results and development of advanced fault detection algorithms.","PeriodicalId":6401,"journal":{"name":"2012 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"34 1","pages":"1299-1305"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88004977","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}
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