Pathmanathan, M.Soong, W.Ertugrul, N.2011-02-082011-02-082010Proceedings of IEEE International Conference on Sustainable Energy Technologies (ICSET) 2010: pp.1-69781424471911http://hdl.handle.net/2440/62395Surface permanent magnet (SPM) machines operate with maximum output power for a given current when the induced voltage and the current are in phase. For an SPM generator this is obtained with a leading power-factor load. The inverter topology can achieve a leading input power-factor but this generally requires rotor position information. A lower-cost approach is to use a switched-mode rectifier (SMR) however with conventional modulation control its unity power factor operation results in a lower output power capability, particularly at low speeds. This paper examines performance of phase advance modulation methods to improve the lowspeed output power capability of SPM generators when operated with a SMR. A simplified phase advance modulation called zero-epsilon is proposed. Analytical and simulation approaches are used to understand the fundamental limitations, and the results are then confirmed experimentally.en©2010 IEEEinverter topologyleading power factor loadoutput power capabilityphase advance modulationrotor position informationsurface permanent magnet generatorsswitched-mode rectifiersunity power factorzero-epsilonConference paper002010171410.1109/ICSET.2010.56844372-s2.0-7985150392032825Soong, W. [0000-0003-0734-7608]Ertugrul, N. [0000-0002-5592-5268]