Control DC bus voltage right in your VFD

MTE’s DC LINK CHOKES, also referred to as DC line chokes or inductor chokes, are an economical means of filtering and controlling the DC bus voltage and current in a variable speed drive/inverter. They help reduce AC input line current harmonic distortion while absorbing DC bus voltage spikes. Link Chokes add protection and filtering but should not be considered a direct alternative to AC input or output reactors.

MTE’s DC LINK 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.

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