Use of Air-Cored Axial Flux Permanent Magnet Generator in Direct Battery Charging Wind Energy Systems

Author

Rossouw, F.G. ; Kamper, M.J.

Author_Institution

Univ. of Stellenbosch, Stellenbosch

fYear

2007

fDate

27-30 Nov. 2007

Firstpage

1102

Lastpage

1107

Abstract

Low power, low cost wind energy systems make use of uncontrolled, direct battery charging where the generator is directly connected to the battery via a diode rectifier. Air-cored axial flux permanent magnet (AFPM) generators, although excellently suited for small wind energy systems, can not be used in direct battery charging systems as optimum turbine power matching is not obtained and non-sinusoidal currents are drawn due to the rectifier; with non-sinusoidal currents these generators are shown to become extremely noisy. In this paper a method is analysed whereby better maximum power matching and sinusoidal currents are obtained using AFPM generators in direct battery charging wind energy systems.

Keywords

battery chargers; permanent magnet generators; wind power; air-cored axial flux permanent magnet generator; direct battery charging; maximum power matching; sinusoidal currents; wind energy systems; Batteries; Costs; DC generators; Diodes; Permanent magnets; Power generation; Rectifiers; Turbines; Wind energy; Wind energy generation; Axial flux permanent magnet; Direct battery charging; Wind generator;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems, 2007. PEDS '07. 7th International Conference on

Conference_Location

Bangkok

Print_ISBN

978-1-4244-0645-6

Electronic_ISBN

978-1-4244-0645-6

Type

conf

DOI

10.1109/PEDS.2007.4487842

Filename

4487842