YINENG MOTOR
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Speed regulating method of electromagnetic speed regulating motor

Speed regulating method of electromagnetic speed regulating motor

Speed regulating method of electromagnetic speed regulating motor

The electromagnetic speed regulating motor is composed of a cage motor, an electromagnetic slip clutch and a DC excitation power source (controller). The DC excitation power source has a small power and usually consists of a single-phase half-wave or full-wave thyristor rectifier. Changing the conduction angle of the thyristor can change the magnitude of the excitation current.
Electromagnetic slip clutch is composed of armature, magnetic pole and exciting winding. The armature and the latter have no mechanical connection and can rotate freely. The coaxial connection between the armature and the motor rotor is called the active part, which is driven by the motor; the coupling between the magnetic pole and the load shaft is called the driven part. When the armature and the magnetic poles are stationary, if the excitation winding is passed with direct current, several pairs of magnetic poles with alternating N and S polarities will be formed along the circumferential surface of the air gap, and the magnetic flux passes through the armature. When the armature rotates with the drag motor, due to the relative movement between the armature and the magnetic poles, an eddy current is induced in the armature. This eddy current interacts with the magnetic flux to generate a torque, which drives the rotor with the magnetic poles to rotate in the same direction. The rotation speed is always lower than the rotation speed N1 of the armature. This is a slip speed regulation method. By varying the DC excitation current of the slip clutch, the output torque and speed of the clutch can be changed. Speed ​​regulation characteristics of electromagnetic speed regulation motor:
Simple device structure and control circuit, reliable operation and convenient maintenance;
平滑 Smooth speed regulation, stepless speed regulation;
无 No harmonic impact on the power grid;
Speed ​​loss is large and efficiency is low.
This method is suitable for production machinery with medium and small power, which requires flat sliding and short-time low-speed operation.

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