1. Types of rail electric transfer cart motors
Rail electric transfer carts are a type of equipment used for material handling and transportation. Their motor types are mainly divided into two categories: DC motors and AC motors. DC motors are simple and easy to control and are widely used in rail electric transfer carts; AC motors have advantages in energy consumption and load capacity, and have been increasingly widely used in recent years.
2. Working principle of DC motors
DC electric vehicle motors are a type of equipment that converts electrical energy into mechanical energy. When direct current passes through the armature winding, the armature winding rotates under the action of the magnetic field, and the wires in the armature winding will induce an induced potential in the magnetic field, which causes the direction of the armature winding current to change, resulting in a rotating magnetic field in the armature. On the one hand, the rotating magnetic field drives the armature to rotate, and on the other hand, it interacts with the permanent magnetic field to enable the motor to operate normally.
There are two control methods for DC motors: direct voltage control and PWM control. Direct voltage control is inefficient and is suitable for scenarios where the speed does not change much; PWM control can achieve a balance between high efficiency and large load capacity. Therefore, rail electric transfer cart motors are usually driven by PWM control to ensure a balance between performance and efficiency.
3. Working Principle of AC Motor
AC motor is a device driven by alternating current. According to the characteristics of three-phase alternating current, the central rotating part (i.e., rotor) of the AC motor will be rotated by independent electric forces. When the power output tries to drag the rotor, it will generate rotor current in the stator winding, which makes the motor phase produce a certain phase difference, thereby generating greater torque and driving the rail electric transfer cart to run.
AC motors can be controlled by vector control and induction control. Vector control can achieve multiple output torques and improve the acceleration and load capacity of the motor; induction control is suitable for low-speed scenarios, but also has the characteristics of low noise. In rail electric transfer carts, due to the need for high load, high energy efficiency, low noise and other characteristics, vector control is often used to achieve efficient and reliable operation.
Post time: May-30-2024
