What is the role of the laminations in DC motors?

The main reason for using core laminates in motors is to reduce eddy currents and other losses and to prevent torque reduction when the motor is running at high speed. So what does the laminate in a motor do? Let me introduce to you

The stator and rotor are the two main parts of a DC motor. The toroidal core includes the rotor and the slots that support the windings and coils. Once the core is rotated in a magnetic field, a voltage is generated in the coil, which creates eddy currents.

It is critical to keep the material thin to limit cross-sectional area and reduce eddy current losses, because as its cross-sectional area decreases, so does the eddy current. Instead of using just one solid, massive piece of material, the armature core provides stronger resistance by using many thin pieces or blocks of iron to reduce eddy currents. These individual pieces of iron are called flakes and the armature is made up of a group of flakes.

The iron core is magnetized by the electromagnetic field generated by the rotating stator. Hysteresis is a phenomenon in which the magnetization lags behind the magnetic field. When the magnetic field is withdrawn (engine shutdown), the iron is slowly demagnetized, forming a circuit by alternating between magnetization and demagnetization. The energy required to magnetize and demagnetize the iron core increases with the size of the coil. Due to this loss, energy is wasted, which pushes the motor to use more power to run. Due to the extreme narrowness of the laminar hysteresis lines, the core can be magnetized and demagnetized with less energy. In layman's terms, the laminated stator increases the efficiency of the motor.

The above is the Vshida micro-motor for you to introduce the role of the laminations in DC motors, more information about the welcome to consult us at any time