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Modeling and control of electrical machines

The usual types of electrical machines are known for a long time and are widely used in countless applications of mechanical to electrical and electrical to mechanical conversions. However, in recent years, the performance requirements for these systems are increasing on account of more demanding applications. Specially in the electrical power generation area, the use of new mechanical power sources like windmills and small hydro-power stations have led to the development of, for example, new uses of the asynchronous (single and double-feed) machines. These new applications need a set of new control techniques to fully exploit their capacities. Other emergent area of application of the electrical machines (working as motors or generators) are the automobiles. In recent years, the development of parallel and series hybrid cars and buses have spurred on the design of new control techniques and algorithms for the electrical machines. Another applications, motivated by the necessity of damp high power pulsating electrical loads, are the electrical machines connected to large flywheels. These systems allow to supply the electrical loads when they have a large power demand without overloading the power network. And, also, they allow to recover electrical power and to store it in mechanical form when the electrical load (dynamical) returns power to the network.