{"title":"Performance analysis of a VCR SI engine using petrol alcohol blends","authors":"Debanshu Basu, Samta Phulli, V. Kotebavi","doi":"10.1109/PESTSE.2014.6805264","DOIUrl":"https://doi.org/10.1109/PESTSE.2014.6805264","url":null,"abstract":"Due to the sharp rise in population and industrial and technological growth there has been a rapid rise in the need for fossil fuels like petrol. Hence there is a need to develop alternate fuels. One such alternate fuel can be petrol alcohol blends. These fuels will not only meet the fuel requirements of today and future but also increase the performance of IC engine and reduce emissions. In this study, the performance of a variable compression ratio S.I. engine has been analyzed. The engine used is a four stroke VCR(Variable compression ratio) engine with electrical loading and air cooling. No modifications on the engine and its parts have been made. The blends tested in this study are butanol and ethanol with proportions 10, 20, 30 and 40 percent in petrol. The Brake Thermal Efficiency and Brake Specific Fuel Consumption (BSFC) has been found out and are compared for the above mentioned blends for different compression ratios and loads. It has been observed that the Brake Thermal Efficiency increases and the BSFC decreases. Moreover no major problems like knocking were encountered during the engine operation. Results show that engine runs smoothly up to 40 percent blends in each case without modification to the engine and parts. The maximum efficiency was found at 40 percent blend.","PeriodicalId":352711,"journal":{"name":"2014 POWER AND ENERGY SYSTEMS: TOWARDS SUSTAINABLE ENERGY","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122100317","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}
{"title":"Frequency regulation of an isolated hybrid power system with Battery energy storage system","authors":"S. Singh, S. Singh, S. Chanana, YP Singh","doi":"10.1109/PESTSE.2014.6805286","DOIUrl":"https://doi.org/10.1109/PESTSE.2014.6805286","url":null,"abstract":"This paper presents operation and control of a hybrid Photovoltiac Power, Diesel-Engine Generator (DEG) - Battery energy storage system (BESS) connected to an isolated power system. A case study on the impact of BESS operations on the frequency stability of the hybrid system has been carried out. The limits on state of charge (SOC) due to limited storage capacity have also been incorporated. Simulation of a hybrid system model has been carried out in two cases, steady state analysis of hybrid system using step load response with PI controller and other real time performance analysis for a typical day with random variation in load demand. Parameters of controllers are optimized with Genetic Algorithm. Simulation of a hybrid system model is done with the Matlab/Simulink environment. Simulation results indicate that BESS system can contribute to frequency stability in both cases when the load increases and when the load drops. This feature of BESS system will be helpful if it is operated along with a hybrid Wind-PV System.","PeriodicalId":352711,"journal":{"name":"2014 POWER AND ENERGY SYSTEMS: TOWARDS SUSTAINABLE ENERGY","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124767281","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}
{"title":"Modular three-phase single-stage full-bridge converter for medium power SMPS","authors":"R. Kalpana, G. Bhuvaneswari, Bhim Singh","doi":"10.1109/PESTSE.2014.6805274","DOIUrl":"https://doi.org/10.1109/PESTSE.2014.6805274","url":null,"abstract":"In this paper, a three-phase single stage modular converter for medium power supply for telecom power applications is presented based on the novel principle of connecting three single-phase modules in a three-phase group by creating a virtual neutral using a zig-zag transformer. The combination of three single phase modules and a virtual neutral point device is a powerful method to design a three-phase modular converter system with power factor correction. The performance of such a modular full-bridge dc- dc converter system is studied and evaluated with simulation based on a MATLAB model.","PeriodicalId":352711,"journal":{"name":"2014 POWER AND ENERGY SYSTEMS: TOWARDS SUSTAINABLE ENERGY","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122575107","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}
Vishakha Baharwani, N. Meena, Alka Dubey, Deepak Sharma, U. Brighu, Jyotirmay Mathur
{"title":"Life cycle inventory and assessment of different solar photovoltaic systems","authors":"Vishakha Baharwani, N. Meena, Alka Dubey, Deepak Sharma, U. Brighu, Jyotirmay Mathur","doi":"10.1109/PESTSE.2014.6805302","DOIUrl":"https://doi.org/10.1109/PESTSE.2014.6805302","url":null,"abstract":"Electricity generation is a key source to global emissions of greenhouse gases (GHG) and their related environmental impact. Sustainable development requires methods and tools to measure the environmental impacts of human activities for various products viz. goods, services, etc. Life-cycle analysis is an invaluable tool for evaluating the environmental profile of a product or technology from cradle to grave. Such life-cycle analysis of energy technologies are essential, especially as material and energy flows are often interwoven, and divergent emissions into the environment may occur at different life-cycle-stages. Photovoltaic system is a technology for the production of electricity from renewable sources that is rapidly growing thanks to its potential to reduce the energy consumption from traditional sources and to decrease the air pollution. During the operational phase, there are no emissions and the only input is solar power. However, it should be noted that, considering the entire life cycle of a plant, photovoltaic systems, like any other means of electricity production, give rise to emissions that focus especially in the manufacturing stage and installation of components. In this study, the environmental load of photovoltaic power generation system (PV) during its life cycle by energy payback time (EPT) and Greenhouse Gas emissions are reviewed through LCA study to the state of art of the photovoltaic technologies.","PeriodicalId":352711,"journal":{"name":"2014 POWER AND ENERGY SYSTEMS: TOWARDS SUSTAINABLE ENERGY","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132557208","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}
K. Rakhi, Ilango Karuppasamy, H. Manjunath, M. Nair
{"title":"Simulation analysis of half bridge series parallel resonant converter based battery charger for photovoltaic system","authors":"K. Rakhi, Ilango Karuppasamy, H. Manjunath, M. Nair","doi":"10.1109/PESTSE.2014.6805296","DOIUrl":"https://doi.org/10.1109/PESTSE.2014.6805296","url":null,"abstract":"An innovative application of half-bridge series-parallel resonant converter (HBSPRC) for photovoltaic system and secondary battery interface is explained in this paper. This converter is designed for eliminating both low and high-frequency current ripples on the battery. This will helps to maximize battery life. The switching frequency greater than that of resonance frequency is preferred for operation, because the power switches turn on at zero current and zero voltage; thus, the freewheeling diodes need not have very fast reverse-recovery characteristics. Moreover the proposed battery charger circuit has a few components. To enhance the overall efficiency of the system energy conversion loss is to be minimized and the performance of the power converters depends upon the control method adopted. In this present work, Fuzzy logic based voltage controller and PI voltage controller have been designed, modeled and simulated in MATLAB/simulink platform and results are presented.","PeriodicalId":352711,"journal":{"name":"2014 POWER AND ENERGY SYSTEMS: TOWARDS SUSTAINABLE ENERGY","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133328645","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}
Hema Upreti, Akanksha Dixit, Amal Paul, Shailendra, P. Karandikar
{"title":"Introduction to the zigzag modeled ultracapacitor","authors":"Hema Upreti, Akanksha Dixit, Amal Paul, Shailendra, P. Karandikar","doi":"10.1109/PESTSE.2014.6805255","DOIUrl":"https://doi.org/10.1109/PESTSE.2014.6805255","url":null,"abstract":"“Energy stored is the energy produced”- this is a popular saying which emphasize the importance of efficient energy storage. Energy crises are very prominent nowadays. Hence, the energy storage devices have become a topic of intense research among the scientists and researchers all around the world. Ultracapacitor is the new name to the list of the energy storage devices that are available today. Ultracapacitors have the highest available capacitance values per unit volume and the greatest energy density of all capacitors. In research work, a new model of ultracapacitor i.e. “zigzag” type had been developed. In this paper, the comparative study of this type of model with two other common models i.e. stack and rolled type is done. All the experimental results have been presented in the paper to support the newly proposed model.","PeriodicalId":352711,"journal":{"name":"2014 POWER AND ENERGY SYSTEMS: TOWARDS SUSTAINABLE ENERGY","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123191223","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}
{"title":"Analysis on system sizing and secondary benefits of centralized PV street lighting system","authors":"R. Panguloori, Priyaranjan Mishra","doi":"10.1109/PESTSE.2014.6805322","DOIUrl":"https://doi.org/10.1109/PESTSE.2014.6805322","url":null,"abstract":"The combination of solar and LED lighting has enabled interest in the municipalities and governing authorities to lighten streets/remote areas without setting up electrical infrastructure in a mere traditional way. For which, stand-alone solar street lighting solutions are very popular and often built with customized PV panels and over designed. Recently, AC-centralized street lighting system is adopted by many of the street lighting installers as such system is easy for installation, maintenance and future grid interconnectivity. Generally, solar off-grid solutions are designed for autonomy of 3-5 days to meet lighting requirements under worst environmental conditions. Hence, in situations like continuous sunny days (especially in countries like India), the surplus solar energy gets unutilized, which can be avoided in case of centralized system. This paper presents analytical work on system sizing for two geographical locations in India based on monthly averaged solar irradiance and dusk-dawn length data. Comparison among three solutions (decentralized, AC-centralized, DC-centralized) in terms of system size, amount of surplus energy etc. is presented in this paper. The effect of dust on PV performance is also considered during analysis. An approach to use judiciously available surplus energy in centralized system for other local energy needs is discussed.","PeriodicalId":352711,"journal":{"name":"2014 POWER AND ENERGY SYSTEMS: TOWARDS SUSTAINABLE ENERGY","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129500459","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}
V. Boopathi, R. Muzamil Ahamed, R. P. Kumudini Devi, R. Ramanujam
{"title":"Analysis and mitigation of subsynchronous oscillations in a radially-connected wind farm","authors":"V. Boopathi, R. Muzamil Ahamed, R. P. Kumudini Devi, R. Ramanujam","doi":"10.1109/PESTSE.2014.6805280","DOIUrl":"https://doi.org/10.1109/PESTSE.2014.6805280","url":null,"abstract":"Subsynchronous oscillations (SSO), especially, subsynchronous resonance are potential problems in series compensated power system. A fixed speed wind farm employing single cage induction generator (IG) and double cage IG connected to series compensated line are prone to SSR problem. This paper presents some investigations on SSO resulting from induction generator effect (IGE) with the wind turbine generator (WTG) modelled either as single cage IG or double cage IG. Eigenvalue analysis is carried out for various levels of series compensation for different sizes of wind farm with varying power outputs. Eigenvalue analysis is validated by the electromagnetic transient simulations using PSCAD/EMTDC software. The possibility of steady state SSR (IGE) and transient SSR is investigated in depth using PSCAD/EMTDC for the modified IEEE first bench mark (MFBM) model. SVC is employed for mitigating SSR. A new voltage regulator (VR) model of SVC is proposed and linear state space model of SVC is developed. Eigenvalue analysis conducted with the proposed voltage regulator reveals that the proposed VR model is more effective in mitigating SSR compared to VR models that are reported in the literature.","PeriodicalId":352711,"journal":{"name":"2014 POWER AND ENERGY SYSTEMS: TOWARDS SUSTAINABLE ENERGY","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132401047","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}
{"title":"Model validation and maximum power point tracking of photovoltaic module","authors":"A. Mohapatra, B. Nayak, B. Misra","doi":"10.1109/PESTSE.2014.6805314","DOIUrl":"https://doi.org/10.1109/PESTSE.2014.6805314","url":null,"abstract":"For efficient operation of a photovoltaic (PV) system accurate model of the PV module is required. In this paper a PV simulation model has been developed and has been validated with experimental results of a commercial PV module, ELDORA-40. Maximum power point tracking (MPPT) must be incorporated in the PV system to get maximum power from the PV system. Maximum power of PV depends on two external parameters, temperature and solar irradiation. Since solar irradiation has faster dynamics than temperature an effort has been given to track maximum power of a PV module using perturb and observe (P&O) MPPT for change of insolation. The study has been carried out in MATLAB-Simulink graphical user interface environment.","PeriodicalId":352711,"journal":{"name":"2014 POWER AND ENERGY SYSTEMS: TOWARDS SUSTAINABLE ENERGY","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131657026","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}
{"title":"A novel design of user responsive smart meter integrated automated EMS inn SCADA interfaced smart grid","authors":"M. Manohar, C. Sarin, Prabin James, L. James","doi":"10.1109/PESTSE.2014.6805325","DOIUrl":"https://doi.org/10.1109/PESTSE.2014.6805325","url":null,"abstract":"Electricity supply is rapidly becoming more complex and variable where energy efficiency rules are still evolving only to limited end. A near future with millions of electric vehicles and industrial loads will dramatically increase the necessity of a demand modulation system. The best way of practicing demand management is user responsive load management at the consumer ends. It will be difficult to alter consumer behavior in the direction of energy savings unless consumers are more exposed to market prices than at present. The proposed system introduces a distributed smart meter that intelligently notifies the power consumption rate at various time intervals based on demand factors and power loss factors. It also notifies the characteristic behavior of consumption to the consumer via GSM communication system, and isolates the supply for various faults and power theft. A new intelligent TLPF algorithm has been implemented that confronts all these features and executed using a SCADA controller.","PeriodicalId":352711,"journal":{"name":"2014 POWER AND ENERGY SYSTEMS: TOWARDS SUSTAINABLE ENERGY","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130307731","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}