Selection of braking resistor usage
Braking Resistor A braking resistor is a carrier used to dissipate the regenerative energy of a motor in thermal energy. It is mainly used in inverter control motor fast stop mechanical system to help the motor because of its rapid parking generated by the regeneration of electricity into heat.
Braking resistor usage limits the use of braking resistor efficiency, in order to avoid damage to the braking resistor overheating, it will affect the braking effect of the braking unit. It is noteworthy that the braking resistor power selection is not the bigger the better, must be less than 2.4 times the rated power of the inverter, the other to consider the freewheeling diode with load capacity.
The lower the setting of the braking resistor, the smaller the resistance of the heating resistor, the less the energy consumed, the worse the braking effect. At the same time, the capacity of the brake unit has not been fully utilized.
In the braking resistance and power both have been determined under the premise of slow deceleration for large inertia load, select a lower resistance utilization will achieve better results. For the need to quickly stop the load, then appropriate to select a larger braking resistor usage.
In theory, the braking resistor usage is 100%, the braking unit capacity of the most fully, the braking effect is the most obvious, but this requires a larger braking resistor power cost, the user should be integrated consider.