Braking Resistance for VFD

Braking unit, the full identify of "frequency converter distinctive power consumption braking unit", or "frequency converter one-of-a-kind power comments unit", is usually used to manage the mechanical load is incredibly heavy, braking velocity necessities are very quickly occasions, the motor generated through the regenerative strength thru the brake resistance consumption, or the regenerative power remarks lower back to the electricity supply.

With the frequency converter can be used to obtain fast deceleration/stop function. The electricity amassed on the bus bar is transformed into warmness electricity via the brake unit and brake resistance, and the motor is shortly stopped. A single energy of 30KW-75KW, can guide more than one parallel use

Because the working circumstance of the braking unit is short-time work, that is, the power-on time is very brief every time, in the power-on time, its temperature upward jostle is some distance from secure temperature rise; The intermittent time after every power-off is longer. During the intermittent time, the temperature is ample to be decreased to the identical as the ambient temperature, so the rated energy of the brake resistance will be substantially reduced, and the charge will be decreased accordingly. In addition, due to the fact there is solely one IGBT and the braking time is ms level, the transient overall performance indexes of the strength tube opening and turning off are required to be low, and even the turning off time is required to be as brief as possible, so as to minimize the turning off pulse voltage and defend the strength tube. The manipulate mechanism is additionally quite easy and convenient to implement.

Because of the above advantages, it is extensively used in cranes and different possible load and want speedy braking however for short-time work occasions.

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