When it comes to handling high inertia and high-speed loads, efficiency is key. One of the best ways to handle this type of operation is to use a frictionless motor.
With that said, to learn more about DC injection braking, take a look at the information below:
What Is the DC Injection Braking?
DC injection braking is a technique that uses direct current to the stationary windings of an AC motor once the AC voltage is taken away. It’s an effective method of braking for the majority of AC motors. It provides a fast and smooth braking operation on different types of loads, such as high speed and high inertia.
When the power source is disconnected from the motor, the rotor rotates independently until the friction slows down and stops. A DC injection brake is used as a substitute for a friction brake system.
It provides quick control staffing of a motor load. When the rotating rotor cuts the magnetic field lines of the stationary magnet, it induces perpendicular into the rotor due to Faraday’s law.
DC injection breaks only need a small component, but a friction brake has to be mounted within the rotating system. Not only that, but fiction brakes are prone to more wear and tear and need frequent replacement.
They also require agitation, which has to be done through manual operation by a person. However, a frictionless motor doesn’t require as many technicalities, which makes it safer for the operator.
The Benefits of a Frictionless Motor
DC braking uses its own DC bus to insert the DC current and voltage inside of the stator windings. Therefore, there are no additional materials or components needed for the braking operation.
On the other hand, friction braking requires a separate electric brake module to be applied within the system. It also needs routine replacement of parts. Since no friction is applied with DC injection braking, there’s no need for as many replacement components.
Furthermore, DC injection braking is the mitigated risk of regenerative energy and over potential problems. If you need to quickly slow down a high speed or high inertia load using a quick deceleration ramp, you increase the risk of regenerative energy going back into the drive.
As a result, it causes a potential fault within the drive. However, with a frictionless motor, a quick braking operation is done by the braking energy being transferred into the motor, so no regenerative energy is transferred back to the drive.
Effortless DC Injection Braking
As you can see, a frictionless motor makes DC engine braking operation efficient and effortless. Plus, there’s no worry about the complications of frequent wear and tear. DC injection braking is the answer to smooth operation.
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