Browsing by Author "Beukes, Hendrik Johannes"
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- ItemCompound converter as MPPT, battery regulator and bus regulator for satellite power systems(Stellenbosch : Stellenbosch University, 1993) Beukes, Hendrik Johannes; Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering.ENGLISH ABSTRACT: A new compound energy converter for low earth orbit satellites is proposed, employing the parallel power conversion technique, a new maximum power point tracking technique based on the characteristics of the PV panel, and the peak current-programmed control technique. These techniques are used for low EMI, high power conversion efficiency, high reliability, stability and size reduction.
- ItemSynthesis of a high-performance power converter for electric distribution applications(Stellenbosch : Stellenbosch University, 1998) Beukes, Hendrik Johannes; Stellenbosch University. Faculty of . Dept. of .ENGLISH ABSTRACT: This dissertation discusses the application of static power converters in electric utilities. It shows the evolution of modern silicon switching technology and converter configurations. Problems associated with these configurations are addressed in order to isolate a topology best suited for high-power utility applications, i.e. to switch high power at high frequencies. It is shown that the Auxiliary Resonant Commutated Pole (ARCP) Converter is a preffered soft-switching topology at high power. The analysis of this topology is consequently done in detail, by addressing ideal and non-ideal circuit behaviour. The analysis is complemented with a typical synthesis of an ARCP converter prototype. The most important high-power design constraints are heat management and control of stray inductance. Issues such as peak component stress and electromagnetic noise are also addressed. The dissertation concludes with ideas on the implementation of high frequency converter technology up to the MVA power levels.