Renewable energy technology is steadily gaining importance in the energy market because of the
limited nature of fossil fuels as well as the political pressures to reduce carbon emissions.
To ensure sustainable development adequate and affordable energy should be made available to
satisfy the demand of electric energy. The University of Cape Town (UCT) collaborated with the
International Research Institute Stavanger Vrije Universiteit Brussel Faith University and
Ain Shames University to develop a scaled down prototype of an advanced power generation system
with minimum carbon emission. The upscaled model would be decentralized with a target
plantsizeof10 MW to serve a small industrial community with drinking water production of 1000
m3 d. UCT was tasked with the design and development of the High Speed Permanent Magnet (HSPM)
Generator subsystem in collaboration with the UCT Electrical Mechanical Engineering Department
to be coupled to a micro-gas turbine with a blended fuel mix which includes hydrogen biogas
and biodiesel. The main specifications of the HSPM generator are a rated speed of 30000 RPM and
a power output of 10 kW. However HSPM generators produce substantial heat especially at high
operating speeds and make the thermal management of these machines difficult and complicated
resulting in temperature rise which leads to demagnetization damaged insulation bearing
starvation and reduced power output and efficiency. This book presents the design and
development of the HSPM generator and focuses on both the mechanical and electrical aspects for
the Interior Permanent Magnet (IPM) and Surfaced-Mounted Permanent Magnet (SPM) topologies of
the HSPM generator. In particular it is the effect of coolant velocity to enhance the HSPM
generator efficiency that makes it the subject of this research.