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