Pub Date : 2011-12-01DOI: 10.1109/ICEAS.2011.6147128
G. Mallesham, S. Mishra, A. Jha
This paper deals with the load frequency control of a small scale microgrid consisting of wind, solar, diesel generator and fuel cell as power generating sources and battery, flywheel and aqua electrolyzer as energy storage elements. To improve the load frequency control, the controllers are properly tuned so as to reduce the mismatch between the real power generation and the load demand leading to minimum power and frequency deviations. A systematic approach to obtain frequency bias parameter followed by tuning the gains of Proportional, Integral and Derivative controller (PID) using Integral Square Time Error evaluation criterion (ITSE)and Ziegler Nichols method respectively is proposed. The simulation studies are carried out for different cases and it is found that the dynamic responses of the frequency and power of the microgrid is quite acceptable.
{"title":"Ziegler-Nichols based controller parameters tuning for load frequency control in a microgrid","authors":"G. Mallesham, S. Mishra, A. Jha","doi":"10.1109/ICEAS.2011.6147128","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147128","url":null,"abstract":"This paper deals with the load frequency control of a small scale microgrid consisting of wind, solar, diesel generator and fuel cell as power generating sources and battery, flywheel and aqua electrolyzer as energy storage elements. To improve the load frequency control, the controllers are properly tuned so as to reduce the mismatch between the real power generation and the load demand leading to minimum power and frequency deviations. A systematic approach to obtain frequency bias parameter followed by tuning the gains of Proportional, Integral and Derivative controller (PID) using Integral Square Time Error evaluation criterion (ITSE)and Ziegler Nichols method respectively is proposed. The simulation studies are carried out for different cases and it is found that the dynamic responses of the frequency and power of the microgrid is quite acceptable.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128795914","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147143
A. K. Nayak, B. Misra, S. Rai
The energy problem in wireless sensor networks (WSN) remains one of the major barriers preventing the complete exploitation of this technology. Sensor nodes are typically powered by batteries remains a limited resource to be consumed judiciously. Efficient energy management is thus a key requirement for optimal utilization of the sensor network technology. In this work we propose a novel method to optimize the sensor life by organizing the sensors into a maximal number of non-disjoint set covers with non-uniform sensing ranges. Sensors available in one set cover remain active at any instant of time while other sensors are in sleep mode to consume negligible energy. Each set cover is activated successively, thereby increasing the total lifetime of the network. It has been proved through extensive simulation work that the network lifetime can be increased by adjusting their sensing ranges as compared to sensors with fixed sensing ranges. This method employs genetic algorithm (GA) and greedy heuristic approach to determine optimal sensing range for efficient energy management in sensor network. Simulation results prove its efficiency over the fixed-range strategies.
{"title":"Energy efficient adaptive sensing range for sensor network","authors":"A. K. Nayak, B. Misra, S. Rai","doi":"10.1109/ICEAS.2011.6147143","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147143","url":null,"abstract":"The energy problem in wireless sensor networks (WSN) remains one of the major barriers preventing the complete exploitation of this technology. Sensor nodes are typically powered by batteries remains a limited resource to be consumed judiciously. Efficient energy management is thus a key requirement for optimal utilization of the sensor network technology. In this work we propose a novel method to optimize the sensor life by organizing the sensors into a maximal number of non-disjoint set covers with non-uniform sensing ranges. Sensors available in one set cover remain active at any instant of time while other sensors are in sleep mode to consume negligible energy. Each set cover is activated successively, thereby increasing the total lifetime of the network. It has been proved through extensive simulation work that the network lifetime can be increased by adjusting their sensing ranges as compared to sensors with fixed sensing ranges. This method employs genetic algorithm (GA) and greedy heuristic approach to determine optimal sensing range for efficient energy management in sensor network. Simulation results prove its efficiency over the fixed-range strategies.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127373692","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147109
A. Mohapatra, S. Sinha, B. K. Panigrahi, M. K. Mallick, S. Hong
In this paper an attempt has been made to classify the power quality disturbances more accurately. Wavelet Transform (WT) has been used to extract the useful features of the power system disturbance signal and optimal feature set is selected using Fuzzified Discrete Harmony Search (FDHS) to classify the PQ disturbances. Support Vector Machine (SVM) has been used to classify the disturbances. FDHS is used both for parameter selection of SVM and, feature dimensionality reduction to achieve high classification accuracy. Six types of PQ disturbances have been considered and simulations have been carried out which show that the combination of feature extraction by WT followed by feature dimension reduction and parameter selection of Gaussian kernel using FDHS increases the testing accuracy of SVM.
{"title":"Feature selection and accurate classification of single and multiple power quality events","authors":"A. Mohapatra, S. Sinha, B. K. Panigrahi, M. K. Mallick, S. Hong","doi":"10.1109/ICEAS.2011.6147109","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147109","url":null,"abstract":"In this paper an attempt has been made to classify the power quality disturbances more accurately. Wavelet Transform (WT) has been used to extract the useful features of the power system disturbance signal and optimal feature set is selected using Fuzzified Discrete Harmony Search (FDHS) to classify the PQ disturbances. Support Vector Machine (SVM) has been used to classify the disturbances. FDHS is used both for parameter selection of SVM and, feature dimensionality reduction to achieve high classification accuracy. Six types of PQ disturbances have been considered and simulations have been carried out which show that the combination of feature extraction by WT followed by feature dimension reduction and parameter selection of Gaussian kernel using FDHS increases the testing accuracy of SVM.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125424248","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147156
P. Dharmesh, D. Elangovan
A new type of isolated step-up converter with high voltage gain is proposed in this paper. An isolated DC-DC converter with Continuous Current Mode Current source Inverter with a Voltage Multiplier with minimum Capacitance is designed for Current sources like Fuel Cells, emerging non conventional type of sources. A new design method of half-wave Cockcroft-Walton (H-W C-W VM) that lays on the calculation of the optimal number of stages, which is necessary to produce the desired output voltage with the minimum total capacitance value, is dealt in this project. For this purpose, an adequate choice of the capacitance values per stage is considered, leading to the investigation of four different cases. In this converter, the output to input voltage ratio, for a given duty cycle; can be raised by adding voltage multiplier stages of capacitors. This proposed technique compensates for control circuit delay, and hence, turns on power MOSFET at the instant exactly when drain-to-source voltage becomes zero using the parasitic capacitance of the switches and the leakage inductance of the transformer. The operating frequency of the converter is 100 KHz. Thus unlike conventional method, Ferrite Core transformers are used which reduces the number of turns increasing the power density. The circuit for current source inverter with the voltage multiplier is simulated in PSPICE SOFTWARE and the results obtained were verified with the hardware model. For an input voltage of 30V and input current of 5 Amps, the output from the inverter is 40 V and output from the voltage multiplier of three stages is 230 V and 0.6 Amps.
{"title":"Soft switched DC-DC converter with high voltage gain","authors":"P. Dharmesh, D. Elangovan","doi":"10.1109/ICEAS.2011.6147156","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147156","url":null,"abstract":"A new type of isolated step-up converter with high voltage gain is proposed in this paper. An isolated DC-DC converter with Continuous Current Mode Current source Inverter with a Voltage Multiplier with minimum Capacitance is designed for Current sources like Fuel Cells, emerging non conventional type of sources. A new design method of half-wave Cockcroft-Walton (H-W C-W VM) that lays on the calculation of the optimal number of stages, which is necessary to produce the desired output voltage with the minimum total capacitance value, is dealt in this project. For this purpose, an adequate choice of the capacitance values per stage is considered, leading to the investigation of four different cases. In this converter, the output to input voltage ratio, for a given duty cycle; can be raised by adding voltage multiplier stages of capacitors. This proposed technique compensates for control circuit delay, and hence, turns on power MOSFET at the instant exactly when drain-to-source voltage becomes zero using the parasitic capacitance of the switches and the leakage inductance of the transformer. The operating frequency of the converter is 100 KHz. Thus unlike conventional method, Ferrite Core transformers are used which reduces the number of turns increasing the power density. The circuit for current source inverter with the voltage multiplier is simulated in PSPICE SOFTWARE and the results obtained were verified with the hardware model. For an input voltage of 30V and input current of 5 Amps, the output from the inverter is 40 V and output from the voltage multiplier of three stages is 230 V and 0.6 Amps.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125842972","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147129
P. Das, S. H. nee Dey, A. Chakrabarti, T. Datta
In this paper an effort is made to assess local and global voltage security of multi-bus power system in presence of STATCOM and SVC. A Global Voltage Security Indicator (GVSI) derived from series network equivalent of multi-bus power system has been employed to assess overall system voltage security. Thevenin's equivalent of the power system with respect to a particular load bus has been used to assess the local voltage security. A comparative study on effectiveness of STATCOM and SVC in improvement of voltage security using network equivalents has also been presented and validated using the well known L-index. STATCOM found to be more effective than SVC to ensure voltage security and at the same time it is also capable to reduce reactive power line loss considerably.
{"title":"A comparative study in improvement of voltage security in a multi-bus power system using STATCOM and SVC","authors":"P. Das, S. H. nee Dey, A. Chakrabarti, T. Datta","doi":"10.1109/ICEAS.2011.6147129","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147129","url":null,"abstract":"In this paper an effort is made to assess local and global voltage security of multi-bus power system in presence of STATCOM and SVC. A Global Voltage Security Indicator (GVSI) derived from series network equivalent of multi-bus power system has been employed to assess overall system voltage security. Thevenin's equivalent of the power system with respect to a particular load bus has been used to assess the local voltage security. A comparative study on effectiveness of STATCOM and SVC in improvement of voltage security using network equivalents has also been presented and validated using the well known L-index. STATCOM found to be more effective than SVC to ensure voltage security and at the same time it is also capable to reduce reactive power line loss considerably.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126199635","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147081
V. Kulkarni, P. Katti
Energy is abundantly present in nature but the usable form is scarce and limited. In the present energy scenario energy conservation (EC) is imminent. Industries consume about 50% of energy produced and EC in this sector is more significant. Use of energy management systems (EMS) is one of the feasible approaches. There are many energy consuming components in industries and EC effort should be user friendly, cost effective and less time consuming. In this paper, commonly used machineries in industries are considered and the opportunities in saving energy are discussed. Techniques are suggested in which the cost incurred for implementation is nil or less. Some of the suggested techniques are implemented in an industry. Results show that although there is variation in the savings in individual components but overall 9102 units of energy is saved in the plant (22.4%). The payback period is 8 months. Production is not affected.
{"title":"Improvement of energy efficiency in industries by facility based energy management","authors":"V. Kulkarni, P. Katti","doi":"10.1109/ICEAS.2011.6147081","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147081","url":null,"abstract":"Energy is abundantly present in nature but the usable form is scarce and limited. In the present energy scenario energy conservation (EC) is imminent. Industries consume about 50% of energy produced and EC in this sector is more significant. Use of energy management systems (EMS) is one of the feasible approaches. There are many energy consuming components in industries and EC effort should be user friendly, cost effective and less time consuming. In this paper, commonly used machineries in industries are considered and the opportunities in saving energy are discussed. Techniques are suggested in which the cost incurred for implementation is nil or less. Some of the suggested techniques are implemented in an industry. Results show that although there is variation in the savings in individual components but overall 9102 units of energy is saved in the plant (22.4%). The payback period is 8 months. Production is not affected.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127635543","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147131
Renu Sharma, B. K. Panigrahi, P. Rout, K. R. Krishnanand
This paper proposes a new differential evolution optimization (DE) strategy namely, Self-Realized Differential Evolution (SRDE) for solving the economic dispatch (ED) problem with non-smooth cost functions in power systems. The proposed SRDE is in the structure of differential evolution owning new mutation operation and selection mechanism. An effective constraint handling method is presented in the suggested stochastic search technique. The proposed approach has been examined and tested with the numerical results of ED problems with forty-generation units including ramp rate limits, prohibited operating zones and valve-point loading effects also ten-generation units with multiple fuel options. The results of the proposed technique are compared with that of other techniques reported in the literature. For both the cases, the proposed algorithm outperforms the solution reported for the existing algorithms. In addition, the promising results show the robustness, fast convergence and efficiency of the proposed technique.
{"title":"A solution to economic load dispatch problem with non-smooth cost function using Self-Realized Differential Evolution optimization algorithm","authors":"Renu Sharma, B. K. Panigrahi, P. Rout, K. R. Krishnanand","doi":"10.1109/ICEAS.2011.6147131","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147131","url":null,"abstract":"This paper proposes a new differential evolution optimization (DE) strategy namely, Self-Realized Differential Evolution (SRDE) for solving the economic dispatch (ED) problem with non-smooth cost functions in power systems. The proposed SRDE is in the structure of differential evolution owning new mutation operation and selection mechanism. An effective constraint handling method is presented in the suggested stochastic search technique. The proposed approach has been examined and tested with the numerical results of ED problems with forty-generation units including ramp rate limits, prohibited operating zones and valve-point loading effects also ten-generation units with multiple fuel options. The results of the proposed technique are compared with that of other techniques reported in the literature. For both the cases, the proposed algorithm outperforms the solution reported for the existing algorithms. In addition, the promising results show the robustness, fast convergence and efficiency of the proposed technique.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125107939","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147127
K. Basu, N. M. Nor, S. A. Hafidz
An alternate power supply guarantees the performance of loads during voltage disturbances in the normal supply. It is proposed to implement a quick change over of the power supply of single-phase electronic loads from the faulty phase to a healthy phase in a 3-phase system. Super capacitors maintain the dc voltage during the period of disturbance. A zigzag transformer may also be used to rebuild a balanced 3-phase load voltage by isolating the faulty phase from the load. Both the 3-phase and single-phase loads may be supplied with the rated voltage during the period of disturbance. Use of a static transfer switch reduces the change over time to 0.02 second.
{"title":"Mitigation of power supply disturbance in electronic loads","authors":"K. Basu, N. M. Nor, S. A. Hafidz","doi":"10.1109/ICEAS.2011.6147127","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147127","url":null,"abstract":"An alternate power supply guarantees the performance of loads during voltage disturbances in the normal supply. It is proposed to implement a quick change over of the power supply of single-phase electronic loads from the faulty phase to a healthy phase in a 3-phase system. Super capacitors maintain the dc voltage during the period of disturbance. A zigzag transformer may also be used to rebuild a balanced 3-phase load voltage by isolating the faulty phase from the load. Both the 3-phase and single-phase loads may be supplied with the rated voltage during the period of disturbance. Use of a static transfer switch reduces the change over time to 0.02 second.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125016759","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147121
M. Jain, Sushma Gupta, G. Agnihotri
Micro-grid system is currently a conceptual solution to fulfill the commitment of reliable power delivery for future power systems. Renewable power sources such as wind, hydro offer the best potential to supply free power for future micro-grid systems. A micro grid consists of six parallel operated self excited induction generators driven by either wind or hydro system. The self excited induction generators (SEIG) with reactive power compensator are used for improving voltage regulation. An adjustable reactive power source is required to maintain constant grid voltage with varying load. The required reactive power can be provided by VAR compensator which consists of solid state self-commutating devices along with DC sources. Selection and ratings of these components for self commutating devices are quite important for optimal design of VAR compensator. In this paper design of micro grid is proposed which consist of six parallel operated systems. If a fault occurs in any one of the generating unit then the VAR compensators has to maintain constant voltage of micro grid at varying load.
{"title":"Design of voltage controller for parallel operated self excited induction generator — Micro grid","authors":"M. Jain, Sushma Gupta, G. Agnihotri","doi":"10.1109/ICEAS.2011.6147121","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147121","url":null,"abstract":"Micro-grid system is currently a conceptual solution to fulfill the commitment of reliable power delivery for future power systems. Renewable power sources such as wind, hydro offer the best potential to supply free power for future micro-grid systems. A micro grid consists of six parallel operated self excited induction generators driven by either wind or hydro system. The self excited induction generators (SEIG) with reactive power compensator are used for improving voltage regulation. An adjustable reactive power source is required to maintain constant grid voltage with varying load. The required reactive power can be provided by VAR compensator which consists of solid state self-commutating devices along with DC sources. Selection and ratings of these components for self commutating devices are quite important for optimal design of VAR compensator. In this paper design of micro grid is proposed which consist of six parallel operated systems. If a fault occurs in any one of the generating unit then the VAR compensators has to maintain constant voltage of micro grid at varying load.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131646915","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 : 2011-12-01DOI: 10.1109/ICEAS.2011.6147095
P. Telagarapu, B. Biswal, Vijaya Santhi Guntuku
In this paper, we propose an independent efficient compression and encryption techniques for an image in multimedia applications. In order to reduce the volume of multimedia data over wireless channels, data compression techniques are widely used. Discrete cosine transform (DCT) is one of the major compression Scheme. In this paper, we present Dynamic bit-width adaptation scheme in discrete cosine transform (DCT) as an efficient compression technique. We select the appropriate operand bit widths that achieve significant reduction of power consumption. It is essential to protect the confidential image data from unauthorized access for multimedia applications. Hence, in this paper, we present a modification to the Advanced Encryption Standard (MAES) to reflect a high level security and better image encryption. The modification is done by adjusting the Shift Row Transformation.
{"title":"Security of image in multimedia applications","authors":"P. Telagarapu, B. Biswal, Vijaya Santhi Guntuku","doi":"10.1109/ICEAS.2011.6147095","DOIUrl":"https://doi.org/10.1109/ICEAS.2011.6147095","url":null,"abstract":"In this paper, we propose an independent efficient compression and encryption techniques for an image in multimedia applications. In order to reduce the volume of multimedia data over wireless channels, data compression techniques are widely used. Discrete cosine transform (DCT) is one of the major compression Scheme. In this paper, we present Dynamic bit-width adaptation scheme in discrete cosine transform (DCT) as an efficient compression technique. We select the appropriate operand bit widths that achieve significant reduction of power consumption. It is essential to protect the confidential image data from unauthorized access for multimedia applications. Hence, in this paper, we present a modification to the Advanced Encryption Standard (MAES) to reflect a high level security and better image encryption. The modification is done by adjusting the Shift Row Transformation.","PeriodicalId":273164,"journal":{"name":"2011 International Conference on Energy, Automation and Signal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129756469","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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