EN VIDEO Different types of Rotors and their characteristics

 

 Different types of Rotors and their characteristics

The rotor in electrical engineering is the moving part, relative to the stator, of rotating electrical machines: direct current machine, synchronous machine, asynchronous machine, etc.

The rotor can be a magnet which during its rotation induces an electric field in the stator windings of the generator / alternator. In an electric motor, the current flowing through the rotor windings causes a magnetic field which reacts with the permanent one of the stator to rotate the central axis.

Electrical machines consist of a stator and a rotor1,2. The stator creates a fixed longitudinal magnetization using windings (inductor) or permanent magnets1,2. The rotor consists of a set of coils connected to a rotary collector. The rotary collector makes it possible to keep the transverse direction of magnetization of the rotor fixed when the latter rotates. Thanks to this device, the magnetizations, rotor and stator, are always optimally offset (in quadrature) 1,2. This shift causes torque according to the law of maximum flux (a north pole attracts a south pole), thus causing the rotor to rotate.

The electrical generator is a rotating machine that converts the mechanical energy supplied to the rotor into alternating current electrical energy. The rotor is the inductor. It can consist of a permanent magnet (thus generating a constant field), in this case the voltage delivered by the machine is not adjustable (if we do not take into account the losses in the conductors) and its rms value and its frequency vary with the speed of rotation. More commonly an electromagnet provides induction. This winding is supplied with direct current, either by means of a rotary ring collector (a double ring with brushes) bringing an external source, or by a rotating diode and brushless exciter. A regulation system allows adjustment of the voltage and phase of the current produced.

The stator is the armature. It consists of windings which will be the seat of alternating electric current induced by the variation in the flux of the magnetic field due to the relative movement of the inductor with respect to the armature.

 

 Different types of Rotors and their characteristics

The rotor in electrical engineering is the moving part, relative to the stator, of rotating electrical machines: direct current machine, synchronous machine, asynchronous machine, etc.

The rotor can be a magnet which during its rotation induces an electric field in the stator windings of the generator / alternator. In an electric motor, the current flowing through the rotor windings causes a magnetic field which reacts with the permanent one of the stator to rotate the central axis.

Electrical machines consist of a stator and a rotor1,2. The stator creates a fixed longitudinal magnetization using windings (inductor) or permanent magnets1,2. The rotor consists of a set of coils connected to a rotary collector. The rotary collector makes it possible to keep the transverse direction of magnetization of the rotor fixed when the latter rotates. Thanks to this device, the magnetizations, rotor and stator, are always optimally offset (in quadrature) 1,2. This shift causes torque according to the law of maximum flux (a north pole attracts a south pole), thus causing the rotor to rotate.

The electrical generator is a rotating machine that converts the mechanical energy supplied to the rotor into alternating current electrical energy. The rotor is the inductor. It can consist of a permanent magnet (thus generating a constant field), in this case the voltage delivered by the machine is not adjustable (if we do not take into account the losses in the conductors) and its rms value and its frequency vary with the speed of rotation. More commonly an electromagnet provides induction. This winding is supplied with direct current, either by means of a rotary ring collector (a double ring with brushes) bringing an external source, or by a rotating diode and brushless exciter. A regulation system allows adjustment of the voltage and phase of the current produced.

The stator is the armature. It consists of windings which will be the seat of alternating electric current induced by the variation in the flux of the magnetic field due to the relative movement of the inductor with respect to the armature.