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Transformerless series dip/sag compensation with a multilevel cascaded inverter
(Stellenbosch : Stellenbosch University, 2001-12)
ENGLISH ABSTRACT: This thesis covers the development of a multilevel cascaded inverter for the purpose of costeffective
transformerless series dip compensation. Of all known power quality problems, voltage
dips are the ...
Optimisation methods applied to compensator placement
(Stellenbosch : University of Stellenbosch, 2004-12)
ENGLISH ABSTRACT: The optimal placement of different types of compensators on electrical networks is a complex
task faced by network planners and operations engineers. The successful placement of these
devices normally ...
The comparison of AC and DC alternatives for sub-transmission networks
(Stellenbosch : Stellenbosch University, 2001-12)
ENGLISH ABSTRACT: Recent advances in semiconductor technology extended the economic power range
for DC transmission to just a few MW. Network planners need tools to compare AC
and DC alternatives in order to find the ...
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 ...
Transformerless series dip/sag compensation with ultracapacitors
(Stellenbosch : University of Stellenbosch, 2004-12)
ENGLISH ABSTRACT: This thesis covers the development of a transformerless series dip compensator. Of all known power
quality problems, voltage dips are the greatest reason for concern. Series injection dip compensators
offer ...