I'm not certain what, "industrial use" some might be used to, but- when doing the PFC, for the factories I contracted, simple capacitor banks were all that was required. I'm certain there are variables, in design applications, but blanket statements generally prove uninformed. ie: (http://www.nhp.com.au/files/editor_upload/File/Power%20Quality/Introduction-to-Power-Factor-Correcti...)
