Influence of AC-DC-DC converter on radial/axial flux permanent magnet wind power generators with mechanical energy storage system

This paper deals with the influence of AC-DC-DC converter on permanent magnet (PM) wind power generators. Differently from AC load conditions, since the phase current in PM generators with the converter contains harmonic components, their influence on generators' performance is investigated. In particular, in this paper, two PM generator types, radial flux PM generator and axial flux PM generator, are considered for the comparative investigation. The generators are connected to a mechanical energy storage system consisted of a permanent magnet synchronous motor with a heavy wheel, and the generator performance characteristics are dealt with while the mechanical energy storage system is being operated.