Welcome to International Journal of Emerging Technologies in Engineering Research (IJETER)


Volume 7, Issue 6, June (2019)

S.No Title & Authors Full Text
1 Designing of the Interleaved Flyback Inverter for PV Applications
Shivaprasad Hiremath, Dr. A. Sreedevi
Abstract - Nowadays renewable energy resources are attaining the more importance because they are readily available and ecofriendly in nature. But the cost required for the implementation of the inverter is costly and solar energy source is intermittent in the nature. To solve these problems an interleaved flyback inverter is proposed. This topology provides the interleaving feature that reduces the voltage stress on the switches and ripple in the output voltage is less that reduces the size of the output filter capacitor. The cost and size of the flyback converter is less compared to other isolated dc-dc converters.RCD snubber circuit is used to protect the switch from the high dv/dt and provides the path for the flux resetting of the transformer. The efficiency of the converter topology increases. In this paper designing of interleaved flyback converter for PV applications and RCD snubber circuit has been carried.
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2 Cost Effective Residential Building Using Plastic Bottles - A Home for the Future
Anujith Saji, S Shahana, S Subahan, A Thasneem, Abibasheer Basheerudheen
Abstract - Disposal of plastic waste is one among the biggest challenge faced by the society nowadays. Decreasing quantity of the conventional building resources and the hike in its price is yet another issue. Providing an affordable housing for the needy is, therefore, becoming an issue of major concern that needs to be addressed seriously. The current study aims to find a solution for the highlighted challenges by maximum utilization of plastic waste in construction industry and to propose cost effective construction materials and techniques. Experimental investigations were done in order to develop building components for foundation and roof using plastic bottles. Plastic bottles were filled with demolished concrete waste for foundation, demolished waste and saw dust for walls and plastic wrappers for roof. The obtained results were compared with the conventional building materials. Architectural plan for a 400 sq. ft. residential building was prepared. Bill of quantities for the same was prepared and compared with the conventional building. From the prepared BOQ, it is understood that percentage economy in material cost can be achieved by using plastic bottles, i.e., 400% more economical when compared with conventional building materials. A prototype of the residential building according to the plan was also constructed. From the studies conducted, it is clear that plastic can be used effectively as an alternate building material, both in terms of strength and durability.
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3 Design and Simulation of Zeta Converter for Speed Control of BLDC Motor
Banashankari Hosur, Hemalatha J N
Abstract - Now days the utilization of driving systems with variable speed are increasing in different applications like vehicle industries, domestic appliance and in manufacturing industries etc. And in product manufacturing companies motors with both variable speed and constant speed is required. For such requirement proposed circuit fed BLDC motor can be used effectively. This paper proposes sensored control of BLDC motor using Zeta converter. The proposed circuit operates in both openloop and closed loop. The sensored speed control scheme of BLDC motor is designed. Since brushes are absent in motor, for the commutation purpose voltage source inverter operating in 120 degree conduction mode is designed. Zeta converter is used for obtaining regulated dc output voltage. PSIM Simulation is used to simulate the designed model.
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4 Design and Implementation of Two Input Modified Single Ended Primary Inductance Converter for Micro Grid Application
Hemalatha J N, Hariprasad S A, Anitha G S
Abstract - The critical component of a hybrid renewable resources based system is the power electronic interface connected between source and load. The primary goal of this interface is to maintain constant output voltage with high efficiency at all operating points, irrespective of variations in the input levels. In conventional distributed generation system employing multiple renewable resources requires separate power electronic converter for every source to maintain constant output voltage as the input is highly fluctuating. Also every converter stage requires its own controller to balance the power. Generally the devices used in power converters operates in hard switching mode of devices, this not only increases the switching loss but also the switching stress across the device at every switching cycle. Therefore the operating life time of the system reduces. The primary objective of this paper is to design and implement a dual input modified Single Ended Primary Inductance Converter to meet the requirements of reduced stress, high efficiency and constant output voltage at different conditions when compared to conventional SEPIC topology. In this paper an attempt is made to propose a modified converter topology by providing lossless passive snubber for each switching device in each stage focusing on the reduction of large dv/dt and large di/dt to reduce the switching stress across the switching device and also to improve the efficiency by achieving zero current switching at turn on and zero voltage switching at turn off. The proposed topology is validated in MATLAB Simulink platform considering solar PV model and wind model as its inputs individually and simultaneously. Also it is been validated with a master controller to regulate the output voltage by controlling the duty cycle of the switches. The results were analysed to show that the switching stress is less and efficiency is high at different operating conditions. The power simulation results shows that the stress across the device is reduced by 4% and efficiency improved by 4% as compared to conventional SEPIC topology. The dual input converter is practically implemented and tested.
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