Electrical Engineering

Global Warming is the greatest challenge that the world is facing today. It is very important to take preventive measures before this problem poses a serious threat to the mankind. Power Plants play a major role in green house gas emissions. Nearly 21.3% of green house gases are emitted by these power plants alone. In this paper we try to propose a computational approach to reduce these carbon dioxide emissions by using Fire Fly Optimization Technique. The proposed optimization technique is better than other conventional optimization techniques in terms of computational time and number of iterations. It also shows that the method is practically applicable in real time. The technique was applied to a three generator and six generator systems for different load demands for validation. To check the quality of the solution the results are being compared with the conventional optimization algorithms.

Switched Reluctance Machine (SRM), due to its several advantages such as simple and rugged construction, high efficiency, high torque to inertia ratio, thermal robustness and economic has emerged as an attractive option for variable speed drives. Its potential as generator is of increasing interest in automotive and wind applications. This

Averaging the waveforms modifies only the switching network but the remaining circuit doesn't change. ➢ This indicates that for small-signal model switching network need to be replaced by its averaged model. ➢ This procedure is called averaged switch modelling. ➢ The switching network in the following figure is considered as a two port network with (v1,i1), and (v2, i2) as its input and output port variables.

Need for high gain converters ➢ These converters are used for stepping up the output voltage of the solar panel. ➢ Normal boost converter gain is limited. ➢ Under practical situation, as duty cycle increases gain initially increases and as duty cycle approaches unity, gain comes down to zero. ➢ It is because of parasitic elements of the converter components. ➢ Reverse recovery problems at high duty ratios. Applications of high gain converters ➢ High Intensity Discharge lamps for Automobiles ➢ Fuel cell energy conversion systems ➢ Battery Back up for uninterruptible power supplies ➢ Solar Energy Conversion Systems ➢ Battery operated Lawn Movers ➢ Battery operated Kitchen Ware ➢ Grid integration of solar power Conventional Boost Converter