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Emerson inverter suppliers talk about the difference between "brake" and "parking" of the inverter

Emerson Inverter Vendors say that the "brake" and "parking" of the frequency converter are different. The difference between "brake" and "parking" of the inverter

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There are two ways to park your car.

One way is called "free parking." Wang Wensheng, that is, agile to the motor "power off", let the motor slide on its own inertial force (OFF2 parking);

Another way is called "brake parking." Then this "brake parking" can be much more. For example, OFF1 parking is based on a certain ramp deceleration brake parking, or OFF3 "emergency braking" parking (parking according to the motor's ultimate braking capacity).

Brake parking means

DC braking (that is, a certain amount of DC power for power supply); dynamic braking (using resistance energy); hybrid braking (DC braking) + dynamic brake); feedback brake (injecting the generated current into the grid); brake brake mechanical brake.

Parking is divided by ramp parking and free parking (fast parking is also ramp-wave parking, but the ramp is steeper).

Brake also has mechanical brakes (such as brakes), energy brakes (brake resistors, reverse brakes, DC brakes, etc.), feedback brakes, etc. Whether braking is required to be related to the running condition of the motor, when the required parking time is less than the free parking time when the parking is ramped, the braking is required; sometimes the braking is required when the motor is running normally, such as when the hook is lowered.

In the drive system consisting of the grid-inverter-motor-load, the energy can be transmitted in both directions. When the motor is in the form of motor operation, electrical energy is transferred from the grid to the motor via the frequency converter, converted into mechanical energy to drive the load, and the load thus has kinetic energy or potential energy; when the load releases the energy to change the motion condition, the motor is driven by the load and enters. The generator operation form converts mechanical energy into electrical energy and reacts to the pre-stage inverter. These reaction energies are called regenerative braking energy and can be reacted back to the grid by the frequency converter or consumed in the braking resistor of the inverter's DC bus (energy braking).

When braking energy is generated

1. Heavy lifting process of lifting equipment

2. Rapid deceleration of large inertia load

3, the process of the beam dumping of the beam pumping unit