Electromagnetic speed regulating motor speed control method

By the cage mini electric motor motor electromagnetic speed control motor,electromagnetic slip clutch and dc excitation source (controller) of three single phase ac motor parts.Dc excitation power is small,usually by a single-phase half-wave or full wave thyristor rectifier,change the thyristor conduction Angle,can change the size of the field current.Electromagnetic slip clutch armature,poles and excitation windings of three parts.The armature and the latter is no mechanical contact,can free rotation.Armature and motor rotor coaxial connecting said active part,by the motor drive;Pole docking with the shaft coupling and load according to secondary wholesalemotor.blogspot.com part.When the armature and pole are static,such as passing a dc excitation winding,the surface will form several along the air gap circle on N,S alternating polarity magnetic pole,the magnetic flux through the armature.

When the armature motor rotates with drag,because of the relative movement between the armature and pole,thus make the armature induced eddy current,the eddy current and magnetic flux interact to produce torque,driving a pole rotor according to the same direction,but its speed constant is lower than the speed of 5kw permanent magnet generator the armature N1,this is a way of slip speed,change of slip clutch dc excitation current,you can change the clutch output torque and rotational speed.Electromagnetic speed regulating motor speed control features: device has the advantages of simple structure and control circuit,reliable operation and convenient maintenance;Control of motor speed smooth,stepless speed regulation;Without the harmonic of power grids affected;Speed loss and low efficiency.