How to increase the starting torque of the motor? The lower the motor speed, the greater the torque.

How to increase the motor starting torque

To increase the starting torque of the motor, you can consider the following methods:

1. Increase the voltage: During the motor startup phase, the starting torque of the motor is increased by increasing the voltage. However, it should be noted that excessively high voltage may also cause other problems, such as motor overheating.

2. Increase current: Increasing the current when the motor starts can increase the starting torque of the motor. This can be achieved by changing the control parameters such as the output current and duty cycle of the motor controller.

3. Use soft start technology: Soft start technology is a method of gradually increasing voltage and current to start the motor. It can avoid the impact of instantaneous peaks generated at the moment of starting on the equipment, and can also increase the starting torque of the motor.

4. Using capacitor starting: Capacitor starting is a method of providing initial transient current through an external capacitor, which can provide greater starting torque when the motor starts.

It should be noted that excessive voltage and current will cause excessive heating of the motor, thus shortening the life of the motor. Therefore, when increasing the starting torque of the motor, attention should be paid to electrical safety to prevent overvoltage and overcurrent from damaging the motor and other components.

The lower the motor speed, the greater the torque?

In some cases, the lower the motor speed, the greater the torque, but this is not absolute.

The output torque of a motor depends on the electromagnetic characteristics of the motor and the control method. Generally speaking, the higher the motor speed, the smaller the output torque; the lower the motor speed, the greater the output torque. This is because the back EMF of the motor increases with the increase of speed, thereby reducing the output torque.

However, in some cases, such as when the motor is in a low-speed and high-torque state, the motor's self-conducting potential may be smaller than the output torque, and the output torque will increase as the speed decreases. This phenomenon may occur in some motors and specific applications, but it is not a universal rule for all motors and applications.

In addition, in practical applications, the control method of the motor will also affect the output torque. For example, due to the influence of the motor's electrical characteristics, the traditional direct torque control (DTC) method is prone to unstable output torque under low-speed and high-torque conditions, while the FOC (Field-Oriented Control) control method can control the output torque more accurately, so it can better achieve a larger output torque in the low-speed area.

To sum up, although sometimes the lower the motor speed, the greater the torque, this is not a universal rule. It depends on the motor's electrical characteristics, control method and specific application.