Pub Date : 2015-09-24DOI: 10.1109/ICPACE.2015.7274975
M. Aspalli, Farhat Mubeen Munshi, Savitri L. Medegar
The main purpose of this paper is to develop a low cost drive system for BLDC motor with reduced switches and minimum hardware. Due to the characteristics of the Brushless DC motor such as high efficiency, hig h power factor, high torque, low maintenance and ease of control, it is widely used in variable speed drives and industrial applications. The flexibility of the drive system can be increased by using dsPIC Digital Signal Controller which combines the features of Microcontroller and Digital Signal Processor on a single chip. The BLDC motor is excited by a Four Switch Three Phase Inverter with minimum number of switches which in turn reduce the associated amount of switching losses. It results in low electromagnetic interference, less complexity of control and reduced interference circuits. A simulation is carried out using MATLAB/SIMULI NK and in the experimental work, a prototype model of hardware is developed.
{"title":"Speed control of BLDC motor with Four Switch Three Phase Inverter using Digital Signal Controller","authors":"M. Aspalli, Farhat Mubeen Munshi, Savitri L. Medegar","doi":"10.1109/ICPACE.2015.7274975","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274975","url":null,"abstract":"The main purpose of this paper is to develop a low cost drive system for BLDC motor with reduced switches and minimum hardware. Due to the characteristics of the Brushless DC motor such as high efficiency, hig h power factor, high torque, low maintenance and ease of control, it is widely used in variable speed drives and industrial applications. The flexibility of the drive system can be increased by using dsPIC Digital Signal Controller which combines the features of Microcontroller and Digital Signal Processor on a single chip. The BLDC motor is excited by a Four Switch Three Phase Inverter with minimum number of switches which in turn reduce the associated amount of switching losses. It results in low electromagnetic interference, less complexity of control and reduced interference circuits. A simulation is carried out using MATLAB/SIMULI NK and in the experimental work, a prototype model of hardware is developed.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"30 1","pages":"371-376"},"PeriodicalIF":0.0,"publicationDate":"2015-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81137991","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 : 2015-09-24DOI: 10.1109/ICPACE.2015.7274928
P. Rao, S. Raja, Sonali Sharma, S. Brunda, N. Kavya, H. Ramesh
The rise in popularity of harvesting energy from ambient vibrations has made compact, energy dense piezoelectric generators commercially available. Much of the available literature focuses on maximizing harvested power through nonlinear processing circuits that require accurate knowledge of generator internal, mechanical and electrical characteristics and idealization of the input vibration source. Utilizing piezoelectric methods of harvesting energy require the conversion of AC to usable DC form. The purpose of this paper is to discuss and compare the various directions for rectification, which is the processing of the AC outputs of energy harvesting systems into regulated low voltage DC suitable for powering low power electronics. The three basic methodologies of energy harvesting, which will be compared, is full-wave bridge rectifier with passive diodes, full-wave bridge rectifier circuit with schottky diodes and Bi-MOS circuit for rectification which involves the combination of MOSFETs and BJTs. The experiment was carried out by using Macro Fibre Composite (MFC) patch on a cantilever beam.
{"title":"Assessment and evaluation of energy scavenging circuits using MFC","authors":"P. Rao, S. Raja, Sonali Sharma, S. Brunda, N. Kavya, H. Ramesh","doi":"10.1109/ICPACE.2015.7274928","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274928","url":null,"abstract":"The rise in popularity of harvesting energy from ambient vibrations has made compact, energy dense piezoelectric generators commercially available. Much of the available literature focuses on maximizing harvested power through nonlinear processing circuits that require accurate knowledge of generator internal, mechanical and electrical characteristics and idealization of the input vibration source. Utilizing piezoelectric methods of harvesting energy require the conversion of AC to usable DC form. The purpose of this paper is to discuss and compare the various directions for rectification, which is the processing of the AC outputs of energy harvesting systems into regulated low voltage DC suitable for powering low power electronics. The three basic methodologies of energy harvesting, which will be compared, is full-wave bridge rectifier with passive diodes, full-wave bridge rectifier circuit with schottky diodes and Bi-MOS circuit for rectification which involves the combination of MOSFETs and BJTs. The experiment was carried out by using Macro Fibre Composite (MFC) patch on a cantilever beam.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"21 1","pages":"116-121"},"PeriodicalIF":0.0,"publicationDate":"2015-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81321337","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 : 2015-09-24DOI: 10.1109/ICPACE.2015.7274913
Sanjith Mohan, T. K. T. Jose Sebastian, A. Gopinath, B. Jaya, M. N. Namboothiripad
The paper proposes an open end winding PMSM based electromechanical actuator for altitude control through Thrust Vector Control. The open end winding configuration has the inherent advantage of applying the voltage directly to the phase thus enabling reduced voltage operation. The paper presents the modeling of the Open end winding PMSM and its drive. The closed loop position control is also modeled to validate the performance of the proposed scheme. The modeling and the simulation study is carried out in MATLAB/SIMULINK. The performance of the proposed system is evaluated through experiments and results are presented.
{"title":"Modeling and simulation of high power open end winding based electromechanical actuator for aerospace applications","authors":"Sanjith Mohan, T. K. T. Jose Sebastian, A. Gopinath, B. Jaya, M. N. Namboothiripad","doi":"10.1109/ICPACE.2015.7274913","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274913","url":null,"abstract":"The paper proposes an open end winding PMSM based electromechanical actuator for altitude control through Thrust Vector Control. The open end winding configuration has the inherent advantage of applying the voltage directly to the phase thus enabling reduced voltage operation. The paper presents the modeling of the Open end winding PMSM and its drive. The closed loop position control is also modeled to validate the performance of the proposed scheme. The modeling and the simulation study is carried out in MATLAB/SIMULINK. The performance of the proposed system is evaluated through experiments and results are presented.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"11 1","pages":"36-41"},"PeriodicalIF":0.0,"publicationDate":"2015-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81743847","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 : 2015-09-24DOI: 10.1109/ICPACE.2015.7274941
Gurmeet Singh, C. Kumar, V. Naikan
In the present industrial scenario, machinery reliability and maintainability plays very important role in meeting the tight production schedules. In such systems, unexpected failures need to be minimized by effective fault diagnosis methods. Induction motors are used as prime movers in most industrial machinery. Therefore, effective fault diagnoses of induction motors are vital in achieving the minimal downtime and production targets. In this work, a comparative study between spectrum analysis of an Enveloped signal with that of traditionally used Fast Fourier Transformation (FFT) of motor current i.e. Motor Current Signature Analysis (MCSA) is performed. Nowadays, Inverter fed drives are commonly used for speed control operations. These drives generate noise and harmonics in the supply line which hinders the MCSA in fault detection. This paper investigate the effectiveness of MCSA and Current Envelope analysis for detection of broken rotor bar and inter turn fault in an inverter fed induction motor drive. A simulation based technique with addition of noise of low Signal to Noise Ratio (SNR) which serves as a replica of phase current in an inverter fed drives is followed.
{"title":"Effectiveness of Current Envelope analysis to detect broken rotor bar and inter turn faults in an inverter fed induction motor drive","authors":"Gurmeet Singh, C. Kumar, V. Naikan","doi":"10.1109/ICPACE.2015.7274941","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274941","url":null,"abstract":"In the present industrial scenario, machinery reliability and maintainability plays very important role in meeting the tight production schedules. In such systems, unexpected failures need to be minimized by effective fault diagnosis methods. Induction motors are used as prime movers in most industrial machinery. Therefore, effective fault diagnoses of induction motors are vital in achieving the minimal downtime and production targets. In this work, a comparative study between spectrum analysis of an Enveloped signal with that of traditionally used Fast Fourier Transformation (FFT) of motor current i.e. Motor Current Signature Analysis (MCSA) is performed. Nowadays, Inverter fed drives are commonly used for speed control operations. These drives generate noise and harmonics in the supply line which hinders the MCSA in fault detection. This paper investigate the effectiveness of MCSA and Current Envelope analysis for detection of broken rotor bar and inter turn fault in an inverter fed induction motor drive. A simulation based technique with addition of noise of low Signal to Noise Ratio (SNR) which serves as a replica of phase current in an inverter fed drives is followed.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"9 1","pages":"191-194"},"PeriodicalIF":0.0,"publicationDate":"2015-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81786968","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 : 2015-09-24DOI: 10.1109/ICPACE.2015.7274956
Kashyap Vasudevan, Chandrasekhar Reddy Atla, K. Balaraman
With the Energy policies promoting solar rooftop PV penetration, a rapid rate in its penetration is observed in the Distribution System. As the distribution systems were not designed to have a wide presence of dispersed generation units, the impacts of bidirectional power flow will be significant on all equipments. This will lead to unforeseen variations in voltage profile of the system. This paper analyses the impact of this dispersed generation on the voltage profile of distribution system. To quantify the impact, case studies are carried out on a practical distribution system using MiPowerTM and the simulation results are presented to arrive at the maximum allowable PV penetration considering voltage level constraints. The analysis could serve as a feasibility study report for utilities promoting dispersed generators in India.
{"title":"Impact of dispersed solar rooftop generation over the voltage profile in Distribution System","authors":"Kashyap Vasudevan, Chandrasekhar Reddy Atla, K. Balaraman","doi":"10.1109/ICPACE.2015.7274956","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274956","url":null,"abstract":"With the Energy policies promoting solar rooftop PV penetration, a rapid rate in its penetration is observed in the Distribution System. As the distribution systems were not designed to have a wide presence of dispersed generation units, the impacts of bidirectional power flow will be significant on all equipments. This will lead to unforeseen variations in voltage profile of the system. This paper analyses the impact of this dispersed generation on the voltage profile of distribution system. To quantify the impact, case studies are carried out on a practical distribution system using MiPowerTM and the simulation results are presented to arrive at the maximum allowable PV penetration considering voltage level constraints. The analysis could serve as a feasibility study report for utilities promoting dispersed generators in India.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"58 1","pages":"270-274"},"PeriodicalIF":0.0,"publicationDate":"2015-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88885558","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 : 2015-09-24DOI: 10.1109/ICPACE.2015.7274921
Javeed Kittur
In the present day scenario the energy demand is going on increasing. It is expensive to import electricity from the generation far from load centers because of the cost of power loss. It is therefore more economical to use electricity generated by local distributed generators. In this paper power generation from wind, Combined Heat Power (CHP) and utility for a complete day is considered. This paper proposes a method to evaluate the optimal generation of a particular day considering Analytic Hierarchy Process (AHP) method, Preference Ranking Organization Method for Enrichment Evaluation (PROMETHEE) and Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) multi-criteria decision making technique. The results obtained by the multi-criteria evaluation using the presented method, gives the possibility of identification and evaluation of the optimal generation in a particular day.
{"title":"Using the PROMETHEE and TOPSIS multi-criteria decision making methods to evaluate optimal generation","authors":"Javeed Kittur","doi":"10.1109/ICPACE.2015.7274921","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274921","url":null,"abstract":"In the present day scenario the energy demand is going on increasing. It is expensive to import electricity from the generation far from load centers because of the cost of power loss. It is therefore more economical to use electricity generated by local distributed generators. In this paper power generation from wind, Combined Heat Power (CHP) and utility for a complete day is considered. This paper proposes a method to evaluate the optimal generation of a particular day considering Analytic Hierarchy Process (AHP) method, Preference Ranking Organization Method for Enrichment Evaluation (PROMETHEE) and Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) multi-criteria decision making technique. The results obtained by the multi-criteria evaluation using the presented method, gives the possibility of identification and evaluation of the optimal generation in a particular day.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"72 1","pages":"80-85"},"PeriodicalIF":0.0,"publicationDate":"2015-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91022997","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 : 2015-09-24DOI: 10.1109/ICPACE.2015.7274944
Anuradha Patil
Energy requirement is one of the major concerns in today's world. Thinking at par on energy, it is the one that is developing the world distinctly. Wind power is the green renewable source of energy competing with the fossil fuels in the electricity market. Wind energy system employs various technical solutions among which wound rotor induction machines are widely used because of several advantages over squirrel cage induction machine. In this project, we explore the operation of wound rotor induction machine for a 2 MW wind turbine system. The steady state analysis and dynamic state analysis study is carried out by employing rotor resistance control and rotor power control.
{"title":"Steady state and dynamic analysis of WRIM employed in WECS","authors":"Anuradha Patil","doi":"10.1109/ICPACE.2015.7274944","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274944","url":null,"abstract":"Energy requirement is one of the major concerns in today's world. Thinking at par on energy, it is the one that is developing the world distinctly. Wind power is the green renewable source of energy competing with the fossil fuels in the electricity market. Wind energy system employs various technical solutions among which wound rotor induction machines are widely used because of several advantages over squirrel cage induction machine. In this project, we explore the operation of wound rotor induction machine for a 2 MW wind turbine system. The steady state analysis and dynamic state analysis study is carried out by employing rotor resistance control and rotor power control.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"10 1","pages":"205-210"},"PeriodicalIF":0.0,"publicationDate":"2015-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91345070","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 : 2015-09-24DOI: 10.1109/ICPACE.2015.7274962
G. Toney, Fathima Jabeen, S. Puneeth
With increasing atrocities on women and children, arises the need of an advanced system to serve the purpose of alerting someone for help. Most of the cases remain mystery because of lack of evidences or them being tweaked. The situation is noxious and we propose a system that would aid the victims not only to send a panic and alert message but also collect evidences in the form of images. We propose a system initiated by a human action. It is also given with an option of switch button and a fall detector to activate the system. The armband would have a controller with GSM/GPS kit interfaced. The band would also be interfaced with a wireless camera for collecting images. A human action would initiate the system. On initiation, the video collected is live video streamed to the Control room. An alert message along with the location is sent to a predefined Mobile Station until the system is reset. Since change in Longitude and Latitude is sent continuously, the person can be tracked. The system is designed also to be used as an alert system during medical emergency.
{"title":"Design and implementation of safety armband for women and children using ARM7","authors":"G. Toney, Fathima Jabeen, S. Puneeth","doi":"10.1109/ICPACE.2015.7274962","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274962","url":null,"abstract":"With increasing atrocities on women and children, arises the need of an advanced system to serve the purpose of alerting someone for help. Most of the cases remain mystery because of lack of evidences or them being tweaked. The situation is noxious and we propose a system that would aid the victims not only to send a panic and alert message but also collect evidences in the form of images. We propose a system initiated by a human action. It is also given with an option of switch button and a fall detector to activate the system. The armband would have a controller with GSM/GPS kit interfaced. The band would also be interfaced with a wireless camera for collecting images. A human action would initiate the system. On initiation, the video collected is live video streamed to the Control room. An alert message along with the location is sent to a predefined Mobile Station until the system is reset. Since change in Longitude and Latitude is sent continuously, the person can be tracked. The system is designed also to be used as an alert system during medical emergency.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"100 1","pages":"300-303"},"PeriodicalIF":0.0,"publicationDate":"2015-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76733417","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 : 2015-09-24DOI: 10.1109/ICPACE.2015.7274910
R. Prabhu, N. Prabhu
Demand for electricity is ever increasing and the conventional sources of energy are limited. Electricity generated using photovoltaic cells is pollution free. Grid connected PV systems generate power from the sun light and supply power to utility grid. Grid connected PV system is composed of a DC/DC converter, PWM inverter and a step-up transformer. A boost converter is used to stabilize the output voltage of the PV cells, which provides power to the SPWM inverter. Zero crossing PLL is used to synchronize the inverter with the grid. The active and reactive power can be transferred by controlling the phase angle and magnitude of the inverter output voltage. The local load connected to the system will receive the active and reactive power. At the same time, reactive power can be transferred to the grid by increasing the inverter voltage slightly keeping the phase angle between inverter voltage and grid voltage zero. The variation in inverter voltage to allow reactive power compensation is restricted by the voltage tolerance of the local load. Simulation study of this system is carried out with MATLAB/Simulink toolbox and simulation results are provided.
{"title":"Standalone single phase photo voltaic system as on-grid reactive power compensator","authors":"R. Prabhu, N. Prabhu","doi":"10.1109/ICPACE.2015.7274910","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274910","url":null,"abstract":"Demand for electricity is ever increasing and the conventional sources of energy are limited. Electricity generated using photovoltaic cells is pollution free. Grid connected PV systems generate power from the sun light and supply power to utility grid. Grid connected PV system is composed of a DC/DC converter, PWM inverter and a step-up transformer. A boost converter is used to stabilize the output voltage of the PV cells, which provides power to the SPWM inverter. Zero crossing PLL is used to synchronize the inverter with the grid. The active and reactive power can be transferred by controlling the phase angle and magnitude of the inverter output voltage. The local load connected to the system will receive the active and reactive power. At the same time, reactive power can be transferred to the grid by increasing the inverter voltage slightly keeping the phase angle between inverter voltage and grid voltage zero. The variation in inverter voltage to allow reactive power compensation is restricted by the voltage tolerance of the local load. Simulation study of this system is carried out with MATLAB/Simulink toolbox and simulation results are provided.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"1 1","pages":"18-22"},"PeriodicalIF":0.0,"publicationDate":"2015-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88634806","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 : 2015-09-24DOI: 10.1109/ICPACE.2015.7274980
S. Madhu, H. Bhavani, S. Sumathi
Partial Discharge (PD) signal measurement is very significant tool in analyzing condition of the electrical insulation. The PD information is lost in the presence of various noises. The wavelet transform (WT) based denoising provides a better platform for pre and post processing of PD signal. The wavelet adaptive Thresholding de-noising techniques are well suited for reducing the noise. This paper adopts the various adaptive thresholding techniques such as VisuShrink, SureShrink, combination of the two called Heursure, minimax thresholding and BayesShrink, which are broadly classified as Global and Local thresholding methods. The algorithm presents the comparative analysis for the selection of optimal mother wavelet. Once the optimal mother wavelet is chosen, selection of the best thresholding rule is identified by comparing the values of signal to noise ratio (SNR), mean square error (MSE) and Peak Signal to Noise ratio (PSNR) of all the techniques. The algorithm also presents the comparison between Hard and Soft thresholding. It is shown that the soft thresholding is best suited to remove the noise compared to hard thresholding. The simulated Damped Exponential Pulse (DEP) and Damped Oscillatory Pulse (DOP) has been used. Three sets of PD data are considered to check the performance of the algorithm.
{"title":"Performance analysis of thresholding techniques for denoising of simulated partial discharge signals corrupted by Gaussian white noise","authors":"S. Madhu, H. Bhavani, S. Sumathi","doi":"10.1109/ICPACE.2015.7274980","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274980","url":null,"abstract":"Partial Discharge (PD) signal measurement is very significant tool in analyzing condition of the electrical insulation. The PD information is lost in the presence of various noises. The wavelet transform (WT) based denoising provides a better platform for pre and post processing of PD signal. The wavelet adaptive Thresholding de-noising techniques are well suited for reducing the noise. This paper adopts the various adaptive thresholding techniques such as VisuShrink, SureShrink, combination of the two called Heursure, minimax thresholding and BayesShrink, which are broadly classified as Global and Local thresholding methods. The algorithm presents the comparative analysis for the selection of optimal mother wavelet. Once the optimal mother wavelet is chosen, selection of the best thresholding rule is identified by comparing the values of signal to noise ratio (SNR), mean square error (MSE) and Peak Signal to Noise ratio (PSNR) of all the techniques. The algorithm also presents the comparison between Hard and Soft thresholding. It is shown that the soft thresholding is best suited to remove the noise compared to hard thresholding. The simulated Damped Exponential Pulse (DEP) and Damped Oscillatory Pulse (DOP) has been used. Three sets of PD data are considered to check the performance of the algorithm.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"17 1","pages":"399-404"},"PeriodicalIF":0.0,"publicationDate":"2015-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82573345","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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