Determining losses and efficiency of variable speed drives and synchronous reluctance motors according to IEC-60034-2-3

Frekvencijski pretvarač je uređaj za promjenu iznosa i frekvencije napona napajanja, a time i momenta tj. brzine vrtnje rotora sinkronog elektromotora. Sinkroni reluktantni motori se sve više koriste kao zamjena asinkronim u industrijskim primjenama. Oni moraju biti napajani iz frekvencijskog pretvarača. Nameće se pitanje cijelog sustava pretvarač + reluktantni motor u smislu korisnosti, upravljanja, zagrijavanja itd. U ovom radu ispitana je korisnost frekvencijskog pretvarača (ABB, Siemens, Danfoss) te korisnost cijelog sustava (pretvarač + sinkroni reluktantni motor). Ispitani su motori različitih proizvođača (ABB, Siemens, KSB, Končar 15z Končar 17z) sukladno normi IEC 60034-2-3.A frequency converter is a device for changing the supply voltage amplitude and frequency and therefore the torque and rotor speed of a synchronous electric motor. Synchronous reluctance motors are being increasingly used as to replace induction motors in general industrial applications. They must be supplied by a power converter. This raises the question of the variable speed drive (frequency converter + reluctance motor) in terms of efficiency, control, heating, etc. In this paper, the influence of the power converter (ABB, Siemens, Danfoss) and the the variable speed drive (frequency converter + motor) is studied. Motors from different manufactures (ABB, Siemens, KSB, Končar 15z i Končar 17z) were tested according to IEC 60034-2-3