The brake unit supplier reminds you: there are generally two ways to brake a three-phase asynchronous motor, one is mechanical braking and the other is electric braking. The so-called braking is to give the three-phase asynchronous motor a torque opposite to the direction of rotation to make it stop quickly.
Three-phase asynchronous motors are widely used in various industrial fields. In practical applications, in order to ensure the safety and efficiency of the production process, we often need to brake the motor control, and energy consumption braking is a common braking method.
Energy-consuming braking is a way to use the motor’s own characteristics to achieve braking. In this way, the motor’s torque is changed by changing the size of the motor’s external resistance, thereby achieving the braking effect.
The principle of three-phase asynchronous motor energy consumption braking can be explained by the following steps:
The first step is to adjust the impedance of the motor. Usually, there is an additional impedance in the motor circuit, and by adjusting the size of this resistance, the torque of the motor can be changed. When the motor needs braking, we increase the impedance of this resistance, thereby reducing the torque of the motor.
The second step is to change the way the motor is powered. In power consumption braking, we can change the way the motor is powered: switching from the normal power supply to the reverse power supply. By changing the power supply, we can change the direction of rotation of the motor and use the negative torque it generates to achieve the braking effect.
The third step is to control the braking process by monitoring the speed and current of the motor. Using the right sensors and control systems, the operating state of the motor can be monitored in real time and the resistance and power supply can be adjusted as needed to achieve the desired braking effect. During the braking process, we can also use the principle of feedback control to precisely control the torque and braking time of the motor, thus achieving more stable and accurate braking.
In general, three-phase asynchronous motor energy consumption braking is achieved by changing the size of the motor's external resistance, changing the motor's power supply method and dynamically controlling the motor's operating state. This braking method has the advantages of simple, reliable, good braking effect, and low cost, and is widely adopted in practical industrial applications. At the same time, through reasonable control and adjustment, it can achieve precise control of the motor braking process, improving the safety and efficiency of the production process.