I have seen a lot of high power (+1000HP) VFD systems (Alstom, Siemens, Yaskawa, AB, etc.) and most of them do not use a DC Link inductor (choke). But some require placing a swinging choke in between rectifier and inverter to reduce DC ripple and line harmonics.
How/why some manufacturers don't use the DC link inductor? How do they compensate for not using it?
Thanks
How/why some manufacturers don't use the DC link inductor? How do they compensate for not using it?
Thanks