Showing papers by "C.V. Nayar published in 2012"
Journal Article•
TL;DR: In this article, the authors presented the modelling and simulation of a Photovoltaic-Variable Speed Diesel Generator (PV-VSDG) off-grid hybrid power system for long term analytical performance studies.
Abstract: This paper presents the modelling and simulation of a Photovoltaic-Variable Speed Diesel Generator (PV-VSDG) Off-Grid hybrid power system for long term analytical performance studies. Two different types of diesel generators, namely the constant speed diesel generators (CSDG) and the VSDGs were considered for the simulations. The system components have been developed using MATLAB/Simulink. The simulation results from Simulink were validated through comparison to the results obtained from the Hybrid Optimisation Model for Electric Renewable (HOMER) simulation software. Simulink models were then used to evaluate the performance of all system configurations. Based on the analysis, it was found that systems using VSDGs perform better than those with conventional CSDGs. The developed models can be modified and used to study the systems’ performances using different power management strategie
9 citations
TL;DR: In this article, the authors proposed to obtain energy saving by reducing the supply voltage without degradation in lighting performance, without noticeably affecting light output while complying with lighting standard limits, without degrading the performance and visual satisfaction in office or industrial buildings.
Abstract: Lighting represents a significant component of commercial buildings, particularly office buildings Fluorescent lighting is invariably used in all commercial, industrial and residential areas A significant amount of lighting energy is wasted every day by leaving the lights on and not utilizing daylight energy However, if daylight illuminance can be harnessed, this will reduce the electricity consumption of fluorescent lamps and save energy This paper explains possible significant savings in lighting energy consumption and hence in costs, without reducing the performance and visual satisfaction in office or industrial buildings It is proposed to obtain energy saving by reducing the supply voltage without degradation in lighting performance Experimental results confirm that as much as 20% of electrical energy can be saved by reducing about 9% of the supply voltage, without noticeably affecting light output while complying with lighting standard limits
7 citations