rotorstator

Rotorstator refers to the two principal components of many electric machines: the rotor, which rotates, and the stator, which remains stationary. The stator typically contains windings or permanent magnets that generate a magnetic field, while the rotor responds to this field. The electromagnetic interaction between these parts enables energy conversion, producing torque in motors or electrical energy in generators.

The rotor can be of different types. A wound rotor carries windings on the rotor that connect to external circuitry, often via slip rings. A squirrel-cage rotor has conductive bars embedded in the rotor and shorted at the ends, forming a self-contained circuit. The stator usually houses three-phase windings and may employ permanent magnets in certain machine designs. The air gap between rotor and stator is a key design parameter that influences torque, efficiency, and losses.

Operation centers on the rotating magnetic field produced by the stator. In alternating-current machines, this rotating field induces currents or interacts with magnetic poles on the rotor. In induction motors, rotor currents are induced by the stator field, generating torque and causing the rotor to slip behind the synchronous speed. In synchronous machines, the rotor is magnetized (by permanent magnets or an excitation winding) and can lock to the rotating field, achieving constant speed under load.

Applications of rotorstator systems span power generation, industrial drives, and many consumer and professional devices. Design considerations include electromagnetic and mechanical losses, cooling, lubrication, and control methods such as variable-frequency drives. The concept underlines the coordinated function of stationary and rotating parts in converting electrical energy to mechanical energy or vice versa.