Editing Overvoltage and undervoltage faults
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<math>R_{regen}=\frac{U_{DCBusVoltage}}{I_{PeakMotorCurrent}}</math>{{mathtip}} | <math>R_{regen}=\frac{U_{DCBusVoltage}}{I_{PeakMotorCurrent}}</math>{{mathtip}} | ||
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+ | <math>R_{regen}=\frac{U_{DCBusVoltage}}{I_{PeakMotorCurrent}}</math>{{mathtip}} | ||
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+ | <math>Power [kW] = frac{Torque [Nm] * Speed [RPM]}{9.5488} </math> | ||
I.e. if supply voltage is 48VDC and peak current is 10A, then a resistor of 4.8 ohms may be needed to consume all current that is returning from the motor. However, in most practical cases the regenerative current is less than the motor peak current, which allows using higher resistance thus reducing risk of overloading the MOSFET switch operating the resistor. It is recommended to experiment with higher resistor values first, and gradually move to lower resistances if problem persists. | I.e. if supply voltage is 48VDC and peak current is 10A, then a resistor of 4.8 ohms may be needed to consume all current that is returning from the motor. However, in most practical cases the regenerative current is less than the motor peak current, which allows using higher resistance thus reducing risk of overloading the MOSFET switch operating the resistor. It is recommended to experiment with higher resistor values first, and gradually move to lower resistances if problem persists. | ||
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= See also = | = See also = | ||
* [[Configuring drive voltage limits FUV and FOV]] | * [[Configuring drive voltage limits FUV and FOV]] | ||
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