Common ener types and ener classification [point] the understanding of common ener types includes: coal, oil, natal gas, ethanol, hydgen, solar ener, nuclear ener, wind ener, electc power, chemical industry, water, tide and geothermal ener. The classification standards are different. Now, the following fo categoes are mainly descbed in different subcategoes: renewable ener in the In nate, some of them can be recycled, called renewable ener, such as wind ener, solar ener, hydrlic power, biomass ener, geothermal ener, ocean ener and other non fossil ener.
Some non renewable ener in nate is called non renewable ener (once consumed, it can not be regenerated for dreds or n thousands of years, such as coal, oil, natal gas and other fossil fuels At present, the most widely used ener on o planet can be divided into: clean ener, which does not pollute the envinment in the pcess of ener use, is called clean ener, such as solar ener, wind ener, ocean ener, hydpower and geothermal. Non clean ener, which pollutes the envinment in the pcess of ener utilization, is called non clean ener, such as coal, oil and natal gas With the dlopment of science and technolo, human can be a kind of non clean ener. The ultimate goal of human ener utilization is carbon free economy.
According to the degree of pcessing ener, it can be divided into: pmary ener in nate; unpcessed natal ener conversion is directly called pmary ener, such as coal, oil, natal gas, solar ener, wind power, hydrlic power, geothermal ener and nuclear ener The pducts that people need are called secondary ener, such as electcity, gas, steam and vaous petleum pducts.
Many cities in the world are facing increasingly seous air pollution. A method to solve the pblem of ban air pollution is suggested. In my opinion, reducing air pollution is facing a tough battle.
This war has led to a sees of health hazards. The real way to solve air pollution is to replace fossil fuels with clean ener such as solar ener and wind ener, and to pduce clean ener by solar ener and wind ener, and pollution of fossil fuel and other polluting ener can be greatly reduced. The excessive use of fossil fuels such as coal has led to the emission of pollutants such as nitgen oxide and carbon dioxide.
According to official statisti, this is a major threat to air quality. The emission of carbon dioxide is up to million tons, which poses a seous threat to air quality. Therefore, using Taiyang ener and wind ener can effectively reduce the emission of pollutants fm fossil fuels and siificantly impve air quality; Secondly, renewable ener such as solar ener and wind ener are pollution-free and envinmental ptection well known.
Solar ener and wind ener are clean, free and inexhstible ener, which pvide ener for cooking, lighting, heating and refgeration, and there is no direct emission. Therefore, to win the fight of air pollution, we must take some gent meases immediately. Replacing fossil fuels with sustainable clean ener is a feasible alternative to fossil fuels.
New clean ener can greatly reduce air pollution in some parts of China, which deserves great attention.
With wind tbines, wind ener is constantly put into o homes. This paper uses the low-speed rated 5kW wind tbine permanent maet. Due to the all amount of instability of the wind tbine, it starts to tn fm the work, converting wind ener into mechanical ener, and then converting mechanical ener into electcal ener.
Its output voltage and crent are constantly changing. The contller must be rectified by the regulator, and then be converted into DC power to charge the battery When the chemical ener is converted into AC, the battery can be used as long as the DC voltage is output to the corresponding voltage, which enses the stable use. In this paper, the SCR tgger circuit is used to complete the selection of rectifier circuit to inverter power supply, and SG integrated inverter is used to realize the conversion pcess.