Applied Mechanics and Materials
Vols. 799-800
Vols. 799-800
Applied Mechanics and Materials
Vol. 798
Vol. 798
Applied Mechanics and Materials
Vol. 797
Vol. 797
Applied Mechanics and Materials
Vol. 796
Vol. 796
Applied Mechanics and Materials
Vol. 795
Vol. 795
Applied Mechanics and Materials
Vol. 794
Vol. 794
Applied Mechanics and Materials
Vol. 793
Vol. 793
Applied Mechanics and Materials
Vol. 792
Vol. 792
Applied Mechanics and Materials
Vol. 791
Vol. 791
Applied Mechanics and Materials
Vols. 789-790
Vols. 789-790
Applied Mechanics and Materials
Vol. 788
Vol. 788
Applied Mechanics and Materials
Vol. 787
Vol. 787
Applied Mechanics and Materials
Vol. 786
Vol. 786
Applied Mechanics and Materials Vol. 793
Paper Title Page
Abstract: This paper produces experimental results comparing operational loss of a power transformer under rated and nonlinear load. A 2kVA three phase three legged dry type power transformer is primarily designed for rated loss; however it is operated with a nonlinear load. Three phase rectifier with variable capacitors is the selected current harmonic source and the distortion at current waveform is controlled by the capacitance values. Initially the operation losses under rated load is measured and then followed with measurement with nonlinear load. At the end of this paper, both type of operation losses is compared and differentiated.
309
Abstract: Photovoltaic is use to supply electricity from sunlight. Inverter is used to convert the direct current (DC) from photovoltaic to alternating current (AC). This project is to design and develop a single phase inverter that able to invert the input voltage of DC to output voltage of AC using PROTEUS software. The inverter based on 8 bits for one cycle of a driver pulse wave. This simulation used before doing the hardware. This software can save a lot of time on this exact simulation of the prototype.
315
Abstract: As a renewable energy and clean energy source, solar power has great development potential. This paper presents the potential of solar radiation and ambient temperature characteristics can be used as alternative energy. All data collected using Davis Vantage Pro2 Weather Station at Centre of Engineering for Renewable Energy (CERE) in Kangar, Perlis. All data consist of daily and monthly average was analyzed. The result shows the average solar radiation and ambient temperature is high in the middle of the year 2013 which is from April to September. These results provide useful information for the design of solar energy system in order to plan the productive system.
323
Abstract: Theoretically, the solar tracking system describe as the device to get the optimize amount of sunlight according to sun movement. So, the shading effect issues can be minimized. This paper is presents the finding of photovoltaic (PV) harvesting energy via dual axis tracking system. The operation of two direct current (DC) motors motion was programme using PIC kit SK40C by using the Lab View Programming software. The first motor system delay timer is set at 15° rotation per hour and second motor system delay timers is set to rotate 180° after 12 pm. The field testing was initially set up at Perlis, Malaysia climate. An actual testing was used to collect the daily data. The result shows that, the output voltage with solar tracking system is 12.93% higher than without tracking system in the sunny day condition.
328
Abstract: In many countries fossil fuels are used as the main source to generate electricity, but due to the increase in energy consumption and the rapid depletion of the fossil fuel resources, the demand of alternate energy sources such as solar, wind or hydro power becomes high [1]. In this paper wind energy as an alternate energy resource for electric power generation is proposed in the form of a small wind farm for grid-connected application in Perlis Malaysia. The monthly wind speed data of Perlis which is the smallest state of Malaysia were measured and the wind mill parameters such as Air Density, Blade Length, Power Coefficient and Blade Length were calculated. The mechanical output power of the proposed wind turbine form is calculated to check out its performance and reliability. The results showed that the proposed wind energy power generating system is a good choice and can be implemented in Malaysia to provide enough power for small towns and rural areas.
333
Abstract: The power generated by a Vertical Axis Wind Turbine (VAWT) depends on the drag force generated by the individual blades and interactions between them in a rotating configuration. The present Analysis is on attempt to predict numerically the coefficient of drag and other aerodynamic parameters for a four blade Vane type Vertical Axis Wind Turbine (VVAWT) with different blades and vanes position. For numerical investigation, commercial available computational fluid dynamics CFD software GAMBIT and FLUENT are used. In this numerical analysis the Shear Stress Transport (SST) k-ω turbulence model is used which is better than the other turbulence models available as suggested by some researchers. The computed results show good agreement with published experimental results.
338
Abstract: Most of renewable energy electrification systems in rural residential area in Malaysia are benefitting the solar PV (photovoltaic) system. The initial 24VDC voltage generated by the modules are converted and inverted to 240VAC to replicate national utility grid standard. However indeed most modern connected loads and electrical appliance are operable within DC voltage internally which requires no extra conversion or inversion at all. Nevertheless when the AC voltage from the grid once been connected to the system, the early PV modules seemed to be totally forgotten and abandoned. An energy conservation concept has been disrupted. A new strategy of benefitting both available DC power and AC utility grid was introduced which could be implemented to save energy and optimised the whole system. Throughout design concept has been proposed and discussed.
343
Abstract: This paper demonstrates the implementation of P&O MPPT controller. The proposed controller was written and compiled in mikroC and later incorporated to a low cost PIC18F4550 microcontroller. Open loop simulation using Proteus Isis was conducted to test the effectiveness of the proposed algorithm. Results obtained from simulation proved the effectiveness of the proposed controller making it suitable for hardware implementation.
348
Abstract: Solar tracker is a device that detects the movement of the sun. Solar tracker receive maximum sun ray in order to produce the maximum power supply by the photovoltaic (PV) panels system. It also depends on the environment factor such as solar irradiation and temperature of the panels. This paper presents the development of the automatic solar tracking system, the construction of the sensor circuit, programming of the control system and also its performance analysis. This automatic solar tracking system is designed with an electronic circuit control using PIC that can trigger the dc motors when the LDR sensors detect sunlight. DC motor will move vertical and 360 ̊ horizontal to increase efficiency of sunlight to the solar panel. Solar panel for the project gets power supply from the battery. The battery will be charged using power from the solar panel.
353
Abstract: This paper emphasizes on the model verification of the electrical performance of a Photovoltaic (PV) cell module by MATLAB/Simulink simulation. The developed model can then be used to predict the PV cell behavior under different physical and environmental parameters such as solar irradiation, ambient temperature, series resistor, shunt resistor, diode saturation current and cell arrangement. Photovoltaic cell model is used for comparing the electrical characteristics for this modeling process. Kyocera PV module is used as the module specification, whereby a PV model can be easily generalized to predict the output current, power characteristics and the maximum power point tracking.
358