Pub Date : 2012-12-01DOI: 10.1109/ICPEN.2012.6492314
S. Choudhury, V. Bhardwaj, P. Nandikesan, Surajeet Mohanty, M. Shaneeth, K. P. Kamalakaran
The paper presents the details of control strategy for power plant based on a 1kW proton exchange membrane fuel cell stack. The system consists of a Proton exchange membrane fuel cell stack, and ancillary devices like valves, coolant pumps, gas heaters and blowers which constitutes the balance of plant. The powering scheme considered for the balance of plant involves linear voltage regulators and dc-dc converters. Balance of plant (BOP) is responsible for keeping the electrode stack under proper conditions and enabling load delivery as per the demand. Regulation of gas flow in accordance with current drawn, control of gas humidification levels etc. form some of the key aspects in this regard. V-I characteristics of the Polymer Electrolyte Membrane Fuel Cell (PEMFC) stack, generated by operating the stack with a BOP based on the control strategy shows adequate performance.
{"title":"Control strategy for PEM fuel cell power plant","authors":"S. Choudhury, V. Bhardwaj, P. Nandikesan, Surajeet Mohanty, M. Shaneeth, K. P. Kamalakaran","doi":"10.1109/ICPEN.2012.6492314","DOIUrl":"https://doi.org/10.1109/ICPEN.2012.6492314","url":null,"abstract":"The paper presents the details of control strategy for power plant based on a 1kW proton exchange membrane fuel cell stack. The system consists of a Proton exchange membrane fuel cell stack, and ancillary devices like valves, coolant pumps, gas heaters and blowers which constitutes the balance of plant. The powering scheme considered for the balance of plant involves linear voltage regulators and dc-dc converters. Balance of plant (BOP) is responsible for keeping the electrode stack under proper conditions and enabling load delivery as per the demand. Regulation of gas flow in accordance with current drawn, control of gas humidification levels etc. form some of the key aspects in this regard. V-I characteristics of the Polymer Electrolyte Membrane Fuel Cell (PEMFC) stack, generated by operating the stack with a BOP based on the control strategy shows adequate performance.","PeriodicalId":336723,"journal":{"name":"2012 1st International Conference on Power and Energy in NERIST (ICPEN)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126336396","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 : 2012-12-01DOI: 10.1109/ICPEN.2012.6492326
S. Debbarma, L. Saikia
In this paper a maiden attempt has been made to examine and investigates the effect of bacterial foraging (BF) optimized fractional order integral and derivative (FOID or IλDμ) controller in automatic generation control (AGC) of a multi-area thermal system considering single stage of reheat turbine and appropriate generation rate constraint (GRC). The performances of several classical integer-order (IO) controllers such as I, PI and PID controllers is evaluated and compared with IλDμ controller to assess the best controller. Investigation reveals that IλDμ controller provides better performance than the IO controllers in terms of settling time, reduced oscillations and peak overshoots. This paper employs bacterial foraging algorithm for optimization of gains and other parameters such as order of integrator (λ) and differentiator (μ) in case of IλDμ controller. Further, sensitivity analysis is carried out for the first time in the system considered to investigate the robustness of the optimum gains, λ and μ of IλDμ controllers obtained at nominal condition.
{"title":"Automatic generation control of multi-area system using non-integer order IλDμ controller","authors":"S. Debbarma, L. Saikia","doi":"10.1109/ICPEN.2012.6492326","DOIUrl":"https://doi.org/10.1109/ICPEN.2012.6492326","url":null,"abstract":"In this paper a maiden attempt has been made to examine and investigates the effect of bacterial foraging (BF) optimized fractional order integral and derivative (FOID or I<sup>λ</sup>D<sup>μ</sup>) controller in automatic generation control (AGC) of a multi-area thermal system considering single stage of reheat turbine and appropriate generation rate constraint (GRC). The performances of several classical integer-order (IO) controllers such as I, PI and PID controllers is evaluated and compared with I<sup>λ</sup>D<sup>μ</sup> controller to assess the best controller. Investigation reveals that I<sup>λ</sup>D<sup>μ</sup> controller provides better performance than the IO controllers in terms of settling time, reduced oscillations and peak overshoots. This paper employs bacterial foraging algorithm for optimization of gains and other parameters such as order of integrator (λ) and differentiator (μ) in case of I<sup>λ</sup>D<sup>μ</sup> controller. Further, sensitivity analysis is carried out for the first time in the system considered to investigate the robustness of the optimum gains, λ and μ of I<sup>λ</sup>D<sup>μ</sup> controllers obtained at nominal condition.","PeriodicalId":336723,"journal":{"name":"2012 1st International Conference on Power and Energy in NERIST (ICPEN)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122386975","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 : 2012-12-01DOI: 10.1109/ICPEN.2012.6492335
A. Mishra, A. N. Kulkarni, V. S. Moholkar
In this paper, Automatic Leveling Mechanism for Weapon Systems Launching Platform using Induction Motor is presented. Leveling of a platform in desired position is required for accurate orientation of weapon systems before prelaunch. Automatisation of leveling mechanism provides fast and accurate leveling at desired position in predefined time. An automatic leveling mechanism consists of a set of four outriggers to level the launching platform at desired angle. An outrigger consists of actuator, electrical motor drive and gear system. Design of outrigger involves calculations of various parameters to meet the desired load and stress during platform leveling as well holding. In the present paper, design and development of An automatic leveling mechanism for weapon system launching platform using induction motor is presented. Induction motor is used in place of DC or BLDC motor to reduce the cost and size of the outrigger while improving ruggedness and ease of operation. This system is used for leveling of heavy load weapon launcher platform of a prestigious weapon system program.
{"title":"Automatic Leveling Mechanism for Weapon Systems Launching Platform using Induction Motor","authors":"A. Mishra, A. N. Kulkarni, V. S. Moholkar","doi":"10.1109/ICPEN.2012.6492335","DOIUrl":"https://doi.org/10.1109/ICPEN.2012.6492335","url":null,"abstract":"In this paper, Automatic Leveling Mechanism for Weapon Systems Launching Platform using Induction Motor is presented. Leveling of a platform in desired position is required for accurate orientation of weapon systems before prelaunch. Automatisation of leveling mechanism provides fast and accurate leveling at desired position in predefined time. An automatic leveling mechanism consists of a set of four outriggers to level the launching platform at desired angle. An outrigger consists of actuator, electrical motor drive and gear system. Design of outrigger involves calculations of various parameters to meet the desired load and stress during platform leveling as well holding. In the present paper, design and development of An automatic leveling mechanism for weapon system launching platform using induction motor is presented. Induction motor is used in place of DC or BLDC motor to reduce the cost and size of the outrigger while improving ruggedness and ease of operation. This system is used for leveling of heavy load weapon launcher platform of a prestigious weapon system program.","PeriodicalId":336723,"journal":{"name":"2012 1st International Conference on Power and Energy in NERIST (ICPEN)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114980921","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 : 2012-12-01DOI: 10.1109/ICPEN.2012.6492340
S. Datta, S. Chowdhuri, J. Bera
This paper presents a state-of-the-art development of PC-based PD controller to control the speed of a DC motor used in a process control application. The principal feature of this system is process efficiency can be tuned to maximum possible value by choosing different gain values for different acceleration/deceleration time of motor speed to achieve linear acceleration or deceleration. For different process items, the gain can be tuned, with different process values, through a Personal Computer (PC). The controller is interfaced with the PC through Universal Serial Bus (USB). All these set of values, for each different process, can be stored in the PC to repeat same process multiple times, thus eliminating the need of tuning the system time and again. USB based interfacing of PC with the controller helps in minimizing the data communication time so that a real-time based speed monitoring can be realized in developed Graphical User Interface (GUI).
本文介绍了一种基于pc的PD控制器的最新发展，用于控制过程控制应用中的直流电机的速度。该系统的主要特点是，通过对电机转速的不同加减速时间选择不同的增益值，可以将过程效率调整到可能的最大值，从而实现线性加减速。对于不同的过程项，可以通过个人计算机(PC)调整增益，使用不同的过程值。控制器与PC机通过USB (Universal Serial Bus)接口。所有这些值，对于每个不同的进程，都可以存储在PC中，以便多次重复相同的进程，从而消除了一次又一次调整系统的需要。PC机与控制器的USB接口有助于减少数据通信时间，从而在开发的图形用户界面(GUI)中实现基于实时的速度监控。
{"title":"Development of USB compatible PC based PD motor controller for chemical process","authors":"S. Datta, S. Chowdhuri, J. Bera","doi":"10.1109/ICPEN.2012.6492340","DOIUrl":"https://doi.org/10.1109/ICPEN.2012.6492340","url":null,"abstract":"This paper presents a state-of-the-art development of PC-based PD controller to control the speed of a DC motor used in a process control application. The principal feature of this system is process efficiency can be tuned to maximum possible value by choosing different gain values for different acceleration/deceleration time of motor speed to achieve linear acceleration or deceleration. For different process items, the gain can be tuned, with different process values, through a Personal Computer (PC). The controller is interfaced with the PC through Universal Serial Bus (USB). All these set of values, for each different process, can be stored in the PC to repeat same process multiple times, thus eliminating the need of tuning the system time and again. USB based interfacing of PC with the controller helps in minimizing the data communication time so that a real-time based speed monitoring can be realized in developed Graphical User Interface (GUI).","PeriodicalId":336723,"journal":{"name":"2012 1st International Conference on Power and Energy in NERIST (ICPEN)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123879338","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 : 2012-12-01DOI: 10.1109/ICPEN.2012.6492319
P. Purkait, G. Das, D. Mukherjee, S. Das
It is not uncommon for induction motor to develop various faults in rotor during its operating life. It is important to develop methods to identify these faults in their early stages to enable timely preventive maintenance. Fitting sensor in the rotor to detect such faults being intricate and costly, amore realizable and hence popular method for rotor fault diagnoses is by processing and analyzing the stator current signal. The present work attempts to utilize current Concordia patterns obtained using Park's Transformation of stator line current signals for analyzing different rotor faults in an induction motor. Hardware experiments have been performed on an induction motor with various rotor faults as pointed out earlier. Each fault was studied under varying degree of load level to obtain more realistic results. Shape, size, and inclination of Concordia patterns thus obtained are found to have clear influences of the type of corresponding rotor fault and degree of load level.
{"title":"Influence of rotor faults on induction motor stator current concordia patterns","authors":"P. Purkait, G. Das, D. Mukherjee, S. Das","doi":"10.1109/ICPEN.2012.6492319","DOIUrl":"https://doi.org/10.1109/ICPEN.2012.6492319","url":null,"abstract":"It is not uncommon for induction motor to develop various faults in rotor during its operating life. It is important to develop methods to identify these faults in their early stages to enable timely preventive maintenance. Fitting sensor in the rotor to detect such faults being intricate and costly, amore realizable and hence popular method for rotor fault diagnoses is by processing and analyzing the stator current signal. The present work attempts to utilize current Concordia patterns obtained using Park's Transformation of stator line current signals for analyzing different rotor faults in an induction motor. Hardware experiments have been performed on an induction motor with various rotor faults as pointed out earlier. Each fault was studied under varying degree of load level to obtain more realistic results. Shape, size, and inclination of Concordia patterns thus obtained are found to have clear influences of the type of corresponding rotor fault and degree of load level.","PeriodicalId":336723,"journal":{"name":"2012 1st International Conference on Power and Energy in NERIST (ICPEN)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132354504","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 : 2012-12-01DOI: 10.1109/ICPEN.2012.6492334
A. Chakrabarti, Navonita Sharma, K. Singh, P. Banik, R. Patwari, S. Bhattacharjee, B. Das, P. Kasari
In this paper an observer based state feedback controller of a DC machine is proposed. The controller is designed to eliminate the saturator used for limiting the starting current. Actuator saturation anti-windup and other nonlinear effect are hence eliminated. The controller supports short term over load capacity which is not possible in conventional PI controller with a saturator. The proposed scheme is simulated in Matlab/Simulink. The controller designed is found to be satisfactory and robust over wide range of operating condition and parameter variations.
{"title":"Observer based state feedback control of DC machine","authors":"A. Chakrabarti, Navonita Sharma, K. Singh, P. Banik, R. Patwari, S. Bhattacharjee, B. Das, P. Kasari","doi":"10.1109/ICPEN.2012.6492334","DOIUrl":"https://doi.org/10.1109/ICPEN.2012.6492334","url":null,"abstract":"In this paper an observer based state feedback controller of a DC machine is proposed. The controller is designed to eliminate the saturator used for limiting the starting current. Actuator saturation anti-windup and other nonlinear effect are hence eliminated. The controller supports short term over load capacity which is not possible in conventional PI controller with a saturator. The proposed scheme is simulated in Matlab/Simulink. The controller designed is found to be satisfactory and robust over wide range of operating condition and parameter variations.","PeriodicalId":336723,"journal":{"name":"2012 1st International Conference on Power and Energy in NERIST (ICPEN)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127779472","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 : 2012-12-01DOI: 10.1109/ICPEN.2012.6492345
M. Sivaiah, Rajeev Parmar, S. Majumder
This article presents the analysis of the energy efficiency of the gas-liquid-solid three-phase mixing in an ejector-induced downflow bubble column. Experiments were carried out with air-aqueous Solution of solids (Kieselguhr, Zno and Al2O3) with different concentrations. Energy dissipation coefficient of mixing has been correlated as a function of different geometric, dynamic and physical variables of the system.
{"title":"Energy efficiency of gas-liquid-solid mixing in a plunging liquid jet slurry bubble column","authors":"M. Sivaiah, Rajeev Parmar, S. Majumder","doi":"10.1109/ICPEN.2012.6492345","DOIUrl":"https://doi.org/10.1109/ICPEN.2012.6492345","url":null,"abstract":"This article presents the analysis of the energy efficiency of the gas-liquid-solid three-phase mixing in an ejector-induced downflow bubble column. Experiments were carried out with air-aqueous Solution of solids (Kieselguhr, Zno and Al2O3) with different concentrations. Energy dissipation coefficient of mixing has been correlated as a function of different geometric, dynamic and physical variables of the system.","PeriodicalId":336723,"journal":{"name":"2012 1st International Conference on Power and Energy in NERIST (ICPEN)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121216479","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 : 2012-12-01DOI: 10.1109/ICPEN.2012.6492323
V. Awasthi, K. Raj
Decimation filter has wide application in both the analog and digital system for data rate conversion as well as filtering. This paper presents efficient compensated Cascaded Integrator Comb (CIC) decimation filter to improve the passband of interest using redundant signed digit arithmetic with its power analysis. Signed digit (SD) number systems provide the possibility of constant-time addition, where inter digit carry propagation is eliminated. A hybrid adder can add an unsigned number to a signed-digit number and hence their efficient performance greatly determines the quality of the final output of the concerned circuit. With the development of high speed processors, a tradeoff is always required between area and execution time to yield the most suitable implementation with low power consumption. The proposed work analyzed the power performance of compensated CIC decimation filter with decimation factor 64 on the bases of its On-chip leakage power and dynamic power with the variation of word length in narrow band and wide band filtering. This paper also utilized signed digit (SD) algorithm to incorporate the key features of the conventional number system with a signed digit (SD) to improve the addition time with high power constraints in an optimized fashion. CIC decimation filter with SD algorithm shows a 63.68% and 39.65% gate delay × dynamic power improvement relative to RCA and HSD fast adder algorithm respectively.
{"title":"Power performance analysis of compensated Cascaded Integrator Comb (CIC) filter in optimum computing","authors":"V. Awasthi, K. Raj","doi":"10.1109/ICPEN.2012.6492323","DOIUrl":"https://doi.org/10.1109/ICPEN.2012.6492323","url":null,"abstract":"Decimation filter has wide application in both the analog and digital system for data rate conversion as well as filtering. This paper presents efficient compensated Cascaded Integrator Comb (CIC) decimation filter to improve the passband of interest using redundant signed digit arithmetic with its power analysis. Signed digit (SD) number systems provide the possibility of constant-time addition, where inter digit carry propagation is eliminated. A hybrid adder can add an unsigned number to a signed-digit number and hence their efficient performance greatly determines the quality of the final output of the concerned circuit. With the development of high speed processors, a tradeoff is always required between area and execution time to yield the most suitable implementation with low power consumption. The proposed work analyzed the power performance of compensated CIC decimation filter with decimation factor 64 on the bases of its On-chip leakage power and dynamic power with the variation of word length in narrow band and wide band filtering. This paper also utilized signed digit (SD) algorithm to incorporate the key features of the conventional number system with a signed digit (SD) to improve the addition time with high power constraints in an optimized fashion. CIC decimation filter with SD algorithm shows a 63.68% and 39.65% gate delay × dynamic power improvement relative to RCA and HSD fast adder algorithm respectively.","PeriodicalId":336723,"journal":{"name":"2012 1st International Conference on Power and Energy in NERIST (ICPEN)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122048662","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 : 2012-12-01DOI: 10.1109/ICPEN.2012.6492342
G. Shankar, V. Mukherjee, S. Debnath, Kamaljyoti Gogoi
This paper presents the suitability of different artificial neural network (ANN) algorithms in estimating the voltage instability of power systems. The ANN models based on different training algorithm are designed and a comparative study is carried out to accurately predict the voltage collapse phenomenon. In the present study, L-index is used as the voltage collapse proximity indicator. This approach is tested on a sample 5-bus system taken from the literature. It is found that the results obtained are quite promising in predicting the voltage collapse phenomenon.
{"title":"Study of different ANN algorithms for weak area identification of power systems","authors":"G. Shankar, V. Mukherjee, S. Debnath, Kamaljyoti Gogoi","doi":"10.1109/ICPEN.2012.6492342","DOIUrl":"https://doi.org/10.1109/ICPEN.2012.6492342","url":null,"abstract":"This paper presents the suitability of different artificial neural network (ANN) algorithms in estimating the voltage instability of power systems. The ANN models based on different training algorithm are designed and a comparative study is carried out to accurately predict the voltage collapse phenomenon. In the present study, L-index is used as the voltage collapse proximity indicator. This approach is tested on a sample 5-bus system taken from the literature. It is found that the results obtained are quite promising in predicting the voltage collapse phenomenon.","PeriodicalId":336723,"journal":{"name":"2012 1st International Conference on Power and Energy in NERIST (ICPEN)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122488369","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 : 2012-12-01DOI: 10.1109/ICPEN.2012.6492315
Santanu Das, P. Purkait, S. Chakravorti
Statistical spreads of the surveys suggest that stator winding faults are one of the most prevailing faults in induction motor. Most of the methods for stator winding inter-turn fault diagnosis are based on Motor Current Signature Analysis (MCSA) combined with signal-and-data processing tools. Fault diagnosis using MCSA becomes more challenging when stator current signatures due to winding short circuit fault and supply voltage unbalance appear identical. The present paper proposes a method through analysis of Park's Vector Modulus (PVM) to discriminate stator winding inter-turn fault cases, from supply voltage unbalance conditions where both cases exhibit apparently similar kind of current signatures. A series of experiments have been performed on a motor with different degrees of stator winding inter-turn faults. The same motor under healthy condition was also tested while operating under unbalanced supply voltages that caused similar current unbalances as in the case of inter-turn short circuit faults. This work aims at identification of the motor voltage unbalance conditions separately from inter-turn fault cases through detection of high frequency signals present in different PVM profiles. Signal processing tools such as Fast Fourier Transform (FFT), Discrete Wavelet Transform (DWT) and Power Spectral Density (PSD) calculation have been employed to discriminate inter-turn short circuit faults from supply voltage unbalance conditions of the motor at different load levels. Entire analysis presented in this paper is based on experimentally obtained motor current signatures.
{"title":"Separating induction Motor Current Signature for stator winding faults from that due to supply voltage unbalances","authors":"Santanu Das, P. Purkait, S. Chakravorti","doi":"10.1109/ICPEN.2012.6492315","DOIUrl":"https://doi.org/10.1109/ICPEN.2012.6492315","url":null,"abstract":"Statistical spreads of the surveys suggest that stator winding faults are one of the most prevailing faults in induction motor. Most of the methods for stator winding inter-turn fault diagnosis are based on Motor Current Signature Analysis (MCSA) combined with signal-and-data processing tools. Fault diagnosis using MCSA becomes more challenging when stator current signatures due to winding short circuit fault and supply voltage unbalance appear identical. The present paper proposes a method through analysis of Park's Vector Modulus (PVM) to discriminate stator winding inter-turn fault cases, from supply voltage unbalance conditions where both cases exhibit apparently similar kind of current signatures. A series of experiments have been performed on a motor with different degrees of stator winding inter-turn faults. The same motor under healthy condition was also tested while operating under unbalanced supply voltages that caused similar current unbalances as in the case of inter-turn short circuit faults. This work aims at identification of the motor voltage unbalance conditions separately from inter-turn fault cases through detection of high frequency signals present in different PVM profiles. Signal processing tools such as Fast Fourier Transform (FFT), Discrete Wavelet Transform (DWT) and Power Spectral Density (PSD) calculation have been employed to discriminate inter-turn short circuit faults from supply voltage unbalance conditions of the motor at different load levels. Entire analysis presented in this paper is based on experimentally obtained motor current signatures.","PeriodicalId":336723,"journal":{"name":"2012 1st International Conference on Power and Energy in NERIST (ICPEN)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123984246","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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