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Vol. 1, No. 1 [June 2015]:

Paper Title :: A two-switch multi-input step-up DC/DC converter for PV systems
Author Name :: Mahdi Elmi || Mohamad Reza Banaei
Country :: Iran
Page Number :: 01-09

This study presents a new two-switch multi-input high step-up DC/DC converter. A coupled inductor is used to enhance the voltage gain. Having a bidirectional port makes the converter suitable for applications in need of battery such as stand-alone photovoltaic (PV) systems. As a result, the proposed converter has the merits of integrating two power sources along with boosting the input voltage. Furthermore, in comparison with typical three-port DC/DC converters which utilize three switches, the presented converter employ only two switches to control the converter. Hence, cost and size of the structure is reduced. In order to verify the performance of the converter, simulation results are taken and depicted.
Keywords— multi-input, DC/DC converter, high step-up, stand-alone PV systems, maximum power point tracking (MPPT) algorithm.

[1] Nejabatkhah, F.; Danyali, S.; Hosseini, S.H.; Sabahi, M.; Niapour, S.M., "Modeling and Control of a New Three-Input DC–DC Boost Converter for Hybrid PV/FC/Battery Power System," Power Electronics, IEEE Transactions on , vol.27, no.5, pp.2309,2324, May 2012
[2] Hongfei Wu; Runruo Chen; Junjun Zhang; Yan Xing; Haibing Hu; Hongjuan Ge, "A Family of Three-Port Half-Bridge Converters for a Stand-Alone Renewable Power System," Power Electronics, IEEE Transactions on , vol.26, no.9, pp.2697,2706, Sept. 201
[3] Danyali, S.; Hosseini, S.H.; Gharehpetian, G.B., "New Extendable Single-Stage Multi-input DC–DC/AC Boost Converter," Power Electronics, IEEE Transactions on , vol.29, no.2, pp.775,788, Feb. 2014
[4] Rong-Jong Wai; Chung-You Lin; Bo-Han Chen, "High-Efficiency DC–DC Converter With Two Input Power Sources," Power Electronics, IEEE Transactions on , vol.27, no.4, pp.1862,1875, April 2012
[5] Zhan Wang; Hui Li, "An Integrated Three-Port Bidirectional DC–DC Converter for PV Application on a DC Distribution System," Power Electronics, IEEE Transactions on , vol.28, no.10, pp.4612,4624, Oct. 2013

Paper Title :: CFD Analysis and Experimental Validation of Ethanol Diesel Blend in CI Engine
Author Name :: Mathew Varghese T || Gavudhama Karunanidhi S
Country :: India
Page Number :: 10-14

This paper describes the CFD analysis and experimental validation for a blend of Ethanol and Diesel in CI Engine. Ethanol is the alcohol found in alcoholic beverages but it also makes an effective motor fuel. Since, ethanol possess low Cetane number it fails to auto ignite. In order to overcome this Diesel is blended with Ethanol. Thus the Diesel will ignite and thus facilitate the Ethanol to start burning. In this work a CFD model was created and the combustion analysis was carried out and the results were validated with experimental data. The Ethanol and Diesel fuels were mixed in different proportions and they were injected to the combustion chamber of a normal diesel engine. A single cylinder PC based VCR Engine was operated with this Ethanol - Diesel blend in different concentrations and at various loads. The experiment was successful and it showed that the Ethanol could be mixed with Diesel and could be injected without any engine modification. The difference between CFD and the experimental results obtained was found within acceptable range.
Key Words: Ethanol, Diesel, CFD, Combustion

[1] A.C. Hansen, Q. Zhang, "Engine durability evaluation with E-diesel". Paper Number: 036033. In: An ASAE meeting presentation, Las Vegas, Nevada, USA, p. 13 ,July 2003.
[2] M.D. Kass, J.F.Thomas, J.M.Storey, N.Domingo, J.Wade, G. Kenreck, "Emissions from a 5.9 liter diesel engine fueled with ethanol diesel blends". SAE Technical Paper 2001-01-2018 (SP-1632).
[3] J.Huang, Y. Wang, S. Li, A.P. Roskilly, Y. Hongdong, H. Li, "Experimental investigation on the performance and emissions of a diesel engine fuelled with ethanol–diesel blends". Applied Thermal Engineering, Vol. 29, No. 11–12, p.2484–90, 2009.
[4] D.C. Rakopoulos, C.D. Rakopoulos, E.C. Kakaras, E. Giakoumis, "Effect of ethanol–diesel fuel blends on the engine performance and emissions of heavy duty DI diesel engine". Energy Conversion and Management, Vol. 49, No. 11, p.3155–62, 2008.
[5] A.C. Hansen, R.H. Hornbaker, Q. Zhang, PWL. Lyne, "On-farm evaluation of diesel fuel oxygenated with ethanol". Paper Number: 01-6173. In: An ASAE annual international meeting presentation, Sacramento, California, USA, p. 17, 2001

Paper Title :: The Restoration of Shadorvan Dam-Bridge, Cultural & Historical Landmark of Shooshtar
Author Name :: Taleb-Mash'hadi, Fereshteh || Daneshpour , Abdul-hadi || Laghai, Hassan-Ali
Country :: Iran
Page Number :: 15-22

The cultural-historical landmark of Shooshtar has traversed a very long distant since the ancient era. In fact it was the mutual corporation of history and nature that end up as a city like Shooshtar which is a combination of both tradition and culture, emerged authentically in a wild natural way through time; and taking the important historical landmarks under consideration, it is expected to become one significant tourism attraction district. Retaining the sustainable aspects of the city, this research aims to restore connection between natural and historical layers within the boundaries of natural city landscape restoration and its main purpose is to provide a range of principles and solutions for a sustainable development, natural resources‟ conservation, and retaining the historical sight of Shadorvan Bridge. Primary in this research, the issue and research method will be defined and afterwards, paraphrasing the keywords of historical landmark and the principles of landmark restoration would lead toward a series of principles for sustainable conservation in a historical landscape. Studying the site would be the next step and following the landscape restoration rules, some issues such as points of strength & weakness, opportunities, natural threats and vernacular culture will be concluded in a table, which all finally will indicate the criterions of preservation to the historical landscape restoration of Shadorvan Bridge. The total conclusion would reveal that the restoration of all the existing layers through the land and understanding the interconnections will guide us to a comprehensive & general restoration ways of the similar landmarks. The fulfillment of this research is achieved by means of descriptive-analytic method (with practical approach) in the context of library studies, harvest field and documents review, detailed plans, summary information and applied access to general principles.
Keywords: Tourism, Shadorvan Bridge, Shooshtar, region, cultural landmark

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[5] Brandi C., Theory of Restoration , Translated by Hanachi, b. University of Tehran press. 98(2013).

Paper Title :: Sliding mode control of Vienna rectifier with output voltage control
Author Name :: Rouzbeh Reza Ahrabi || Mehdi Elmi || Mohammad Reza Banaei
Country :: Iran
Page Number :: 23-29

In this paper, a Vienna type boost rectifier is discussed and controlled using sliding mode control. Sliding mode control function is defined to control output. The object of this system is to provide desired output DC voltage in any possible circumstances.

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[2]. Rajaei A, Mohamadian M, YazdianVarjani A. Vienna-Rectifier-Based Direct Torque Control of PMSG for Wind Energy Application. IEEE Transactions on Industrial Electronics 2013; 60: 2919-2929. DOI: 10.1109/TIE.2012.2227905
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[4]. Grbovic P.J, Delarue P, Le Moigne P. A Novel Three-Phase Diode Boost Rectifier Using Hybrid Half-DC-Bus-Voltage Rated Boost Converter. IEEE Transactions on Industrial Electronics 2011; 58: 1316-1329. DOI: 10.1109/TIE.2010.2050757
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Paper Title :: Basics Of Kalman Filter And Position Estimation Of Front Wheel Automatic Steered Robot Car
Author Name :: Muqri Muzammil || Prashant Bhopal || Yogesh Jain
Country :: India
Page Number :: 30-36

In this paper, we have described the coordinate (position) estimation of automatic steered car by using kalman filter and prior knowledge of position of car i.e. its state equation. The kalman filter is one of the most widely used method for tracking and estimation due to its simplicity, optimality, tractability and robustness. However, the application to non linear system is difficult but in extended kalman filter we make it easy as we first linearize the system so that kalman filter can be applied. Kalman has been designed to integrate map matching and GPS system which is used in automatic vehicle location system and very useful tool in navigation. It takes errors or uncertainties via covariance matrix and then implemented to nullify those uncertainties. This paper reviews the motivation, development, use, and implications of the Kalman Filter.

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