All We know about the strong Marke`s knowlege about electric machines and drives, so him is an specialist in the matter, why not change the way to ask in the forum ? Assignning a 3 specialists(Marke, xx and yy) and add another windows for ask with the text : Ask to the experts, so one of the experts can answer the question, this can achieve other members to ask only the open questions.

Respectfully

Pablito