Brake Unit

Braking unit, the full name of "frequency converter exclusive energy consumption braking unit", or "frequency converter exclusive energy feedback unit", is mainly used to control the mechanical load is relatively heavy, braking speed requirements are very fast occasions, the motor generated by the regenerative energy through the brake resistance consumption, or the regenerative energy feedback back to the power supply.

With the frequency converter can be used to achieve rapid deceleration/stop function. The energy collected on the bus bar is converted into heat energy through the brake unit and brake resistance, and the motor is quickly stopped. A single power of 30KW-75KW, can support multiple parallel use

Because the working condition of the braking unit is short-time work, that is, the power-on time is very short each time, in the power-on time, its temperature rise is far from stable temperature rise; The intermittent time after each power-off is longer. During the intermittent time, the temperature is enough to be reduced to the same as the ambient temperature, so the rated power of the brake resistance will be greatly reduced, and the price will be reduced accordingly. In addition, because there is only one IGBT and the braking time is ms level, the transient performance indexes of the power tube opening and turning off are required to be low, and even the turning off time is required to be as short as possible, so as to reduce the turning off pulse voltage and protect the power tube. The control mechanism is also relatively simple and easy to implement.

Because of the above advantages, it is widely used in cranes and other potential load and need fast braking but for short-time work occasions.

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