This FAQ has been written for NEAL (North East Africa and Levant) region. If you are looking for information for another region, please select the correct country from the top-left dropdown in the page and 'Navigate to Browse FAQs' in the Support menu.
Why do some inverters (VFDs) needs a reactor at the input or DC choke in the DC bus?
In order to smooth the current a choke can be placed upstream the inverter 2 locations possible:
- In the DC bus
- Onto the main supply
Effect of the choke
- The efficiency of the choke on harmonics is depending on its impedance
- Higher the impedance, lower the harmonic distortion
- But higher the impedance, higher the drop voltage
Released for: Schneider Electric Egypt and North East Africa
