Now showing items 1-10 of 59
Intelligente beheer van ’n hernubare, energiedoeltreffende tenk vir melkboerderye
To reduce strain on Eskom and decrease the cost for producing dairy products, an energy-efficient bulk storage tank using solar power was designed. The system uses thermoelectric cooling modules as a supporting cooling ...
Measurement and verification of load shifting interventions for a fridge plant system in South Africa
(ERC (Energy Research Centre), 2013)
In this paper, the author presents the measurement and verification methodology used to quantify the impacts of load shifting measures that are implemented on large industrial fridge plant systems in South Africa. A summary ...
A review on thermoelectric cooling modules: installation design, performance and efficiency
(Academic Journals, 2013)
A thermoelectric cooling module (TECM) is defined as a solid-state heat pump and present advantages (for example, no moving parts and no harmful gasses) over other refrigeration technologies. However, to optimally use ...
Analysing two control methods of shunt active filters for unbalanced load
(Staff Research Council of Yeshwantrao Chavan College of Engineering (YCCE) , Nagpur, India, 2014)
A three-phase shunt active filter is used for current and/or voltage unbalance compensation. Two control schemes with two different theory, instantaneous power theory and Generalized Fryze are considered to compensate the ...
Efficiency analysis of an induction motor with direct torque and flux control at a hot rolling mill
(Energy Research Centre, University of Cape Town, 2015)
This paper presents an efficiency analysis of an induction motor with direct torque and flux control at a hot rolling mill in South Africa. Two scenarios were evaluated: 1) where the induction motor was controlled at ...
Nie-indringende monitering van elektriese kabels in die industriële sektor om onklaarraking en kragonderbrekings te beperk
Condition monitoring of electrical cables can prevent cables from failing prematurely. Partial discharge (PD) is the main source for degradation of the insulation material of medium-voltage cables. The well-known capacitor ...
Performance analysis of a permanent magnet transverse flux generator with double coil
(IEEE-Institute of Electrical and Electronics Engineers, 2016)
One of the disadvantages of permanent magnet (PM) transverse flux machines is high magnetic flux leakage in the stator and rotor cores. To improve the magnetic circuit of this class of machines, a generator with double ...
Improving the efficiency of single phase asynchronous machines
(EE Publishers, 2014)
Globally around 40% of the electricity supplied to the industrial and mining sectors is consumed by electric motorised systems and for South Africa around 60% of the electricity supplied to these sectors is consumed by ...
Energy management by means of fault conditions on active magnetic bearing systems
(IRET (Institute of Research in Engineering and Technology), 2013)
This paper presents the use of fault conditions on active magnetic bearing (AMB) systems as an energy management tool to improve the operation of AMB systems. Fault conditions on AMB system are broadly classified ...
A permanent magnet motor with two degrees of mechanical freedom
(EE Publishers, 2013)
The effectiveness and advantages of an energy-efficient concrete mixer drive using a synchronous permanent magnet motor to develop helical rotor movement