Use of reactor group in induction motor

The purpose of the reactor bank in an induction motor

In an induction motor, the primary uses of a reactor bank include the following aspects:

Stable Voltage and Current

The reactor plays a role in stabilizing voltage and current in an induction motor. It can reduce the overvoltage and overcurrent phenomena of the motor, providing a stable working environment. Specifically, the reactor limits the flow of current by increasing the impedance of the induction motor. This increase in impedance can effectively reduce the voltage impact on the motor and ensure that the current remains within a safe range.

Improve power factor

Using reactors can also improve the power factor of induction motors. Insufficient power factor can cause many problems in the power system, and the introduction of reactors can help to increase the power factor, thereby reducing energy loss and electricity bills. Optimizing the power factor can reduce harmonics and interference throughout the power system, improving power quality.

Improve the smoothness of startup and operation.

During the starting process of the motor, sudden changes in voltage and current may affect the motor. The reactor can slow down the rate of change of voltage and current, allowing the motor to start smoothly. During operation, it can also suppress current fluctuations, further improving the stability and reliability of the motor.

Restrict Short-Circuit Current

In power systems, reactors are also used to limit short-circuit current. When a short circuit occurs in a power system, an extremely large short-circuit current is generated. To ensure the dynamic stability and thermal stability of electrical equipment, reactors are often connected in series at the outgoing breaker to increase the short-circuit impedance, thereby achieving the purpose of limiting short-circuit current.

In summary, the purpose of the reactor bank in an induction motor is mainly to stabilize voltage and current, improve power factor, enhance starting and running smoothness, and limit short-circuit current. These functions contribute to improving the performance and stability of the induction motor, ensuring that it can operate efficiently and reliably under various operating conditions.