What are the major issues caused by VFD (Variable Frequency Drive) and impact of VFD issues


Issues of VFD (Variable Frequency Drive)

Common Mode Current

Electrical noise emission that can
a)Disrupt nearby equipment
b)Cause downtime
c)Create quality control issue or process variability

Capacitive coupling and cable charging

Adjacent cable and motor leads absorb current from the motor and as a a result their performance degraded.This may cause drive to trip and go offline or lead to induced voltages in adjacent systems.

Reflected wave voltage

Voltage is reflected back to the motor and this increases the probability of motor or cable failure

Application safety and reliability

Electrical noise,additional current or reflected voltage may impact the safety and reliability of equipment