The papers deals with six-phase 2 kW 2-pole induction motor without enclosure. The motor is made of laser-cut construction steel , electrical steel and copper sheets. Shaft, two flange cartridge bearing units are machined by the milling machine. Bearings, stator winding and insulation are standard. The goal of the work is experimental investigation of impact of failures of the supply or stator winding on the motor performances.
Słowa kluczowe: enclosure-less, six-phase, induction motor, stator failure, supply failure
Artykuł przedstawia 6-fazowy 2-biegunowy silnik indukcyjny o mocy 2 kW. Model fizyczny silnika wykonano z blach ciętych laserem. Celem pracy jest weryfikacja wpływu uszkodzeń zasilania lub uzwojenia stojana silnika na jego właściwości.
Keywords: silnik bezkadłubowy, 6 faz, silnik indukcyjny, uszkodzenia stojana, uszkodzenia zasilania
Laser cutting technology is being increasingly popular in electric machines manufacturing . It enables to realize almost arbitrary project. The cost of laser cutting are going to even with cost of machining technology. Furthermore, AC electric machines can be built without enclosure. Of course, it reduces stiffness of the machine but simultaneously it decreases thermal resistance. FEM motor model In Ansys Maxwell software 2D FEM 6-phase 2-pole induction motor field-circuit model was built [1-2]. Rated motor parameters are given in Table I. Table 1. The parameters of the sensor parameter unit value Pn kW 2 Un V 200 Qs slots 24 Qr slots 19 Stator double layer winding consists of 24 coils made of round double enamelled copper wire with coil pitch ys=5/6. Rotor winding consists of quasi-trapezoidal copper bars. Each rotor bar includes 2 rectangular copper bars with wider one at the bar top. Rotor slot openings are quite wide to decrease rotor winding leakage reactance and to obtain high starting and maximum motor torques. FEM motor model is presented in Fig. 1. Ma [...]
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