VFD CHOKES

VFD CHOKES offer the advantage of maximizing the circuit inductance for power quality reasons, but without causing an AC input line voltage drop. Link Chokes can be used individually, typically on the positive DC bus, or in pairs with one each on both the positive and negative bus. When two DC Link Chokes are used on the bus, the inductance is additive. You will need twice as much inductance on the DC bus as used on the AC input (per phase) to accomplish the same performance experienced with AC input reactors. For best performance combine the use of both an AC input reactor and a DC Link Choke.