Analysis of electric machines and the role of renewable energy inenvironmental protection

Conventional energy source based on coal, gas, and oil are very much helpful for theimprovement in the economy of a country, but on the other hand, some bad impacts of theseresources in the environment have bound us to use these resources within some limit andturned our thinking toward the renewable energy resources. The social, environmental, andeconomical problems can be omitted by use of renewable energy sources, because theseresources are considered as environment-friendly, having no or little emission of exhaustand poisonous gases like carbon dioxide, carbon monooxide, sulfur dioxide, etc. Renewableenergy is going to be an important source for power generation in near future, because wecan use these resources again and again to produce useful energy. Wind power generation isconsidered as having lowest water consumption, lowest relative greenhouse gas emission,and most favorable social impacts. It is considered as one of the most sustainable renewableenergy sources, followed by hydropower, photovoltaic, and then geothermal. As theseresources are considered as clean energy resources, they can be helpful for the mitigation ofgreenhouse effect and global warming effect. Local employment, better health, jobopportunities, job creation, consumer choice, improvement of life standard, social bondscreation, income development, demographic impacts, social bonds creation, and communitydevelopment can be achieved by the proper usage of renewable energy system. Along withthe outstanding advantages of these resources, some shortcomings also exist such as thevariation of output due to seasonal change, which is the common thing for wind andhydroelectric power plant; hence, special design and consideration are required, which arefulfilled by the hardware and software due to the improvement in computer technology.