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Voltage control of medium to high power three-phase inverter supply systems
(Stellenbosch : Stellenbosch University, 2001-12)
ENGLISH ABSTRACT: In this thesis a new voltage control method is developed for a three-phase inverter
supply system. The inverter supply system consist of a Permanent Magnet Generator, a
three-phase rectifier, a three-phase ...
Prediction and measurement of power line carrier signal attenuation and fluctuation
(Stellenbosch : Stellenbosch University, 2001-12)
ENGLISH ABSTRACT: A frequency domain Power Line Carrier (PLC) simulation program, with the
ability to simulate signal attenuation including the coupling equipment, was
developed. This simulation program was put to the ...
Simple broadband measurements of balanced loads using a network analyzer
(Stellenbosch : Stellenbosch University, 2001-04)
ENGLISH ABSTRACT: Balanced loads such as antennas normally require baluns when they are measured. For
wide band applications, designing and building a balun complicates the measurement and
introduces errors. A simple ...
The placing of line surge arresters and fuses on 11 and 12 kV lines to protect equipment against lightning
(Stellenbosch : Stellenbosch University, 2001-03)
ENGLISH ABSTRACT: Unshielded distribution lines has a poor performance during lightning activity. Lightning
initiates flashovers between the phases and earth and causes line breakers to trip several
times during a ...
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 ...
Advanced modelling of a borehole radar environment with the finite difference time domain method
(Stellenbosch : University of Stellenbosch, 2001-12)
Over the last decade, as the mining industry of South Africa is moving
to ever deeper mines, the borehole radar is becoming an increasingly important
field of research.
In December 2000, Burger completed his thesis on ...
A reliable telemetry software design for a satellite system
(Stellenbosch : Stellenbosch University, 2001-12)
ENGLISH ABSTRACT: One of the requirements for satellite telemetry systems is the provision of reliable
telemetry data to allow accurate monitoring of the satellite status. This thesis focuses on
the design of telemetry ...
Design of a distributed satellite ground system
(Stellenbosch : Stellenbosch University, 2001-12)
ENGLISH ABSTRACT: This thesis describes the development of a distributed ground support system to be used
in the small satellite program at the University of Stellenbosch.
A literature study was done to determine the ...
Middleware for the SUNSAT field station
(Stellenbosch : Stellenbosch University, 2001-12)
ENGLISH ABSTRACT: SRMA currently used on the SUNSAT field station is an effective MAC layer protocol but lacks
several features. Sufficient support for flexible communication, acknowledgement of individual
data packets, ...
Possible applications for vacuum pyrolysis in the processing of waste materials
(Stellenbosch : Stellenbosch University, 2001-04)
ENGLISH ABSTRACT: Current global trends in government, industry and popular OpInIOn indicate that
recycling will become essential in the future. Vacuum pyrolysis is a new technology
with many recycling applications that ...