1. Reasons for slow speed of DC motor
1. Fault of the motor itself
Faults in the DC motor itself can also cause slow speed. For example, there may be open circuit, short circuit and other faults in the motor coil winding, motor bearing wear or uneven magnetic field, which will affect the motor speed and output torque.
2. Unstable power supply voltage
Unstable power supply voltage is also a factor that causes slow speed of DC motor. Because the speed and output torque of DC motor are determined by power supply voltage and load, if the power supply voltage is unstable, it will have an adverse effect on the output performance of the motor.
3. Overload of motor
Overload of motor can also cause slow speed of motor. Because the overload will cause the motor to be subjected to a large load, it will generate too much electromagnetic torque, causing the speed of the motor to decrease.
4. Abnormal motor operating environment
If there is an abnormality in the motor operating environment, it will also affect the normal operation of the motor. For example, environmental conditions such as high temperature, high humidity or a lot of dust will cause friction inside the motor, causing the motor speed to decrease.
2. Solution to slow speed of DC motor
1. Fault handling of the motor itself
Handling the fault of the motor itself requires professional inspection and repair. For example, for the open circuit and short circuit of the motor coil winding, the coil needs to be rewound or replaced; for problems such as motor bearing wear and uneven magnetic field, the bearings and poles need to be repaired or replaced.
2. Stabilize the power supply voltage
The stable power supply voltage can be ensured by installing a voltage stabilizer or using a stable power supply to ensure the normal operation of the motor. When using the motor, try to avoid power tripping, and use an overcurrent protection device to protect the motor.
3. Reduce the motor load
The motor load can be reduced by increasing the transmission ratio, reducing the workload, or increasing the motor speed. Among them, increasing the transmission ratio or increasing the motor speed can increase the output power, reduce the motor load, and thus increase the motor speed and output torque.
4. Adjust the motor operating environment
Adjusting the motor operating environment can be achieved by lowering the ambient temperature, controlling the ambient humidity, and cleaning the surrounding environment of the motor. Keeping the motor dry and clean can effectively reduce internal faults and friction in the motor, thereby increasing the motor speed and output torque.
In summary, the problem of slow speed and lack of power of the DC motor may be caused by multiple factors. If you encounter this problem, you can detect and handle it according to the above method to improve the working efficiency and performance of the motor.
