Inverter Braking Resistor Calculation

Metres kilograms seconds and for rotational energy radians.

Inverter braking resistor calculation. Brake time or duty cycle and the total cycle time. How do you calculate the stopping energy put into a dynamic braking resistor. Average braking power 0 w. Please note braking power is conservatively stated slightly overstated motor and drive efficiency is considered 100.

Leave the watts entry blank or enter a value if you prefer to reduce the options. Use drive power rating if unknown maximium torque typically 100 to 200 use 1 5 if unknown motor efficiency typically 0 8 to 0 98 use 0 95 if unknown. They will reduce the braking power proportionally and hence increase the stop times for any given load. Enter the minimum brake resistor ohms required by the inverter.

The minimum ohms are set by the drive manufacturer and will produce braking power at the peak rating of the drive or its braking module. Average braking power 0 w. Brake resistor calculator instructions for use. Minimum resistance ohms.

Kinetic energy m v2 2 e g. Stop energy remember friction drag etc all work in your favour remember first of all to convert everything into the right units. To calculate the right size of the resistor you need the characteristic data of the load cycle. The calculator will list the best combinations of resistors and connection arrangements.

Due to production tolerance and temperature coefficient the recommended resistance value is significantly higher than the minimum resistance value. Calculating braking resistor value r v dc switch on p peak ppeak motor power rating x maximum torque x efficiency motor power rating. Peak braking power 0 w. Man on bike 60kg man 20kg bike 15mph or 7m s.