Search
Now showing items 1-7 of 7
Control of a 1.5 MW active power filter and regeneration converter for a Spoornet DC traction substation
(Stellenbosch : University of Stellenbosch, 2005-03)
Although regenerative braking has been in used in railway systems for a long time
already, the energy generated was dissipated in resistor banks. The rapid advances
in the power electronics field, accompanied by the ...
PWM converter for a highly non-linear plasma load
(Stellenbosch : University of Stellenbosch, 2005-12)
This thesis discuss an investigation into the applicability of modern high frequency power
conversion technology in the plasma mineral processing industry. The physics governing
the plasma in a processing environment are ...
Design of a passive rotor transverse flux rotating machine
(Stellenbosch : Stellenbosch University, 2005-04)
ENGLISH ABSTRACT: The transverse flux machine (TFM) offers the opportunity of high torque to volume ratios which makes
it an excellent candidate for direct wheel drives and low speed generator applications. TFMs have ...
Insulator pollution monitoring device : development, calibration and field evaluation
(Stellenbosch : Stellenbosch University, 2005-04)
ENGLISH ABSTRACT: The calibration and field evaluation of an Insulator Pollution Monitoring Relay (IPMR)
were the main aims of this research programme. A repeatable artificial wetting test
method was developed after ...
The development of a methodology to compile an insulator pollution severity application map for South Africa
(Stellenbosch : Stellenbosch University, 2005-04)
ENGLISH ABSTRACT: The main objective of this research project was to develop a methodology which can be
used to assist in developing an insulator pollution severity application map (INSMAP),
more particularly for South ...
Rotor design and performance evaluation of a PM-assisted reluctance synchronous traction machine
(Stellenbosch : Stellenbosch University, 2005-04)
ENGLISH ABSTRACT: The thesis describes the optimum rotor design and performance of a 110kW
Permanent-Magnet assisted (PM-assisted) Reluctance Synchronous traction Machine
(RSM) using bonded permanent magnet sheets. ...
Active capacitor voltage stabilisation in a medium-voltage flying-capacitor multilevel active filter
(Stellenbosch : University of Stellenbosch, 2005-03)
A switching state substitution must be developed that will make use of both single-phase
redundancies and three-phase redundancies in the flying-capacitor topology. Losses should
be taken into consideration and the ...