Jan Prokop
Czasopismo Techniczne, Elektrotechnika Zeszyt 3-E 2016, 2016, s. 163 - 171
https://doi.org/10.4467/2353737XCT.16.274.6073In the paper, alternative technologies of electric machines for domestic appliances were discussed. Nowadays, domestic appliances are used on a mass scale. In most households, there are domestic appliances where electric machines are used. Commutator motors are generally used in domestic appliances due to low costs of production. This is one of their few advantages, whereas to their disadvantages can include low energy efficiency and durability, which is limited by the sliding contact of brush-commutator. In consequence, devices equipped with these motors have low efficiency of energy conversion and are very often unreliable. In recent years, the vacuum cleaner became the receiver of relatively high power from the mains. Therefore, vacuum cleaners were covered by EU regulations. An increase of the energy efficiency of domestic appliances where electric machines are used is possible, among others, by introducing energy- saving technologies in electric machines. They are characterized not only by higher energy efficiency, but also by much longer failure-free operation of domestic appliance drive.
Jan Prokop
Czasopismo Techniczne, Elektrotechnika Zeszyt 1-E (8) 2015, 2015, s. 139 - 149
https://doi.org/10.4467/2353737XCT.15.035.3835In this paper, the series configuration of pole winding connections in each phase of a three-phase 12/8 switched reluctance motor was analyzed. Based on the simulation model, the effect of magnetic couplings on motor properties was determined. Static characteristics were obtained for NNSS and NSNS configurations. Voltage, current, and electromagnetic torque waveforms were determined. Simulation results were verified through laboratory tests.