Skip to content
Back to section
Knowledge

The key points of selecting inductors for inverters

May 25, 2018

Input capacitors help reduce harmonic currents, improve the power factor, and reduce the impact of surge voltage and current in the input circuit on the inverter. If the output cable length of the inverter exceeds the specified length, an output capacitor should be added to compensate for the change in coupling capacitance during cable operation and prevent overcurrent.

The importance of input capacitor

Input capacitors help reduce harmonic currents, improve the power factor, and reduce the impact of surge voltage and current in the input circuit on the inverter.

Application of output inductors

If the length of the frequency converter output cable exceeds the specified length, an output inductor should be added to compensate for the change in coupling capacitance during cable operation and prevent overcurrent.

Abnormal handling of series-connected inductors

In the southern region, due to the large rated load of the series-connected inductors, the operating current is large, and the temperature rise is close to 100℃, which is prone to cracking caused by thermal expansion and contraction in heavy rain weather.

Pictures related to the key points of selecting inductors for inverters
Pictures related to the key points of selecting inductors for inverters
Pictures related to the key points of selecting inductors for inverters 2
Pictures related to the key points of selecting inductors for inverters 2
Pictures related to the key points of selecting inductors for inverters 3
Pictures related to the key points of selecting inductors for inverters 3

Drive fault, or a planned shutdown coming up?

Send the drive brand, model, fault code and nameplate photo — an engineer reviews every request.