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In this paper, an elevator's drive system is thoroughly examined in order to improve its operation, in terms of reducing the energy consumption. Vector control is used for the drive system and the simulation results are compared to a real application's measurements. In order to reduce the total energy consumption of the system, the conventional braking system is replaced by a regenerative braking...
Epoxy resin constitutes a vital insulating element for electrical machine insulation. The present paper deals with the phenomenon of flashover in nanocomposite epoxy resin (with TiO2 nanoparticles) under the influence of uniform electric fields. As is known, water droplets on insulating surfaces may cause dry zones, local discharges and eventually arcs. Several parameters, affecting the flashover...
Lifts are definitely one of the main forms of energy consumption of buildings. They spend 3–5% of the total consumption of a building. In this paper some results of measurements of energy consumption of elevators will be presented in order to classify those elevators according to their energy consumption. For the classification methodology, the German standard VDI 4707 will be used. The purpose of...
Nowadays, induction motors (IMs) are the greatest driving loads in the electrical distribution systems due to their better and optimum characteristics and cost. A large percentage of the electrical loads in the industrial countries concerns IMs, so optimization of the energy consumption of them can optimize the whole of the electrical energy consumption. The replacement of working IMs with more efficient...
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