The mechanical transmission routinely present in the current productive systems of any economic activity of a country, is based on the use of electric motors in its drive. Nowadays these energy conversion systems, both domestically and industrially, are preponderant in the performance of various practical applications and therefore represent 95% of all existing main drives due to the fact that they combine the advantages of electric energy. Electric motors can be grouped into several classes and types due to electrical factors, build quality, cooling system and safety conditions in their operability. reelcraft hose reels
The main classification is characterized by the use of the type of electric current in its power supply, which may be AC or DC. Within each of these types the network type may be divided, that is, it requires one or three phases of excitation being respectively single-phase or three-phase and within each of these types may also be synchronous or asynchronous, depending on whether the speed of its rotor is adjusted to the sync frequency or not. The most commonly used type of motor in the industry is the three-phase induction motor.
The electric machines revolutionized the world, bringing modernity when used in the industry. The construction of electric motors was begun in 1813 by Michael Faraday who, by inserting a magnet into a coil of copper wire, caused it to rotate through an electric current. From 1832 when the scientist Salvatore Dal Negro built the first AC machine, several scientists, inventors and scholars began to analyze the part of electrical physics. Around 1880, an Austrian inventor named Nikola Tesla, decided to study the rotating field. Then came the induction machine, the project being funded originally by George Westinghouse. This North American, born in New York, learned from his father to make and repair agricultural machinery, for he was already a curious in the area of motion science.
The discovery of the induction machine boosted the Industrial Revolution, becoming the main type of electromechanical converter used, because the power system is found more frequently in alternating current, like the electrical network that supplies our houses. This machine that converted electrical energy into mechanical energy, the principle of operation of the electric motors, went on to be used in several uses.