SYNCHRONOUS MACHINE WITH PERMANENT MAGNETS

摘要

The offered synchronous machine with permanent magnets consists of the stator 1 with teeth 2 covered by the anchor winding coils 3. On rotor 4, in slots between teeth 5 with non-magnetic wedges 6 radially magnetized permanent magnets 7 are mounted. The rotor 4 is mounted on the shaft 8. The stator's 1 teeth 2 angular width, amount of teeth 2 and the amount of proximal poles 5 and 7 are selected so as to ensure the highest magnetic flux linkage to the anchor windings. To achieve this, it is necessary to provide the number of the stator's teeth equal to ..., the stator's teeth angular width equal to ..., the rotor's teeth and the magnet's angular width on the rotor outer rim equal to ..... Here, m is number of phases, k is a positive integer greater than zero; ... is the angular width of the pole section. To reduce the load starting torque, it is proposed that the stator's teeth in electrical machine are made with a slope, which corresponds to the opening width ... of the stator slots, simultaneuosly about the same size increasing the stator's teeth angular width relative to the angular width of the magnets on the rotor's outer rim. To increase the efficiency of machine it is proposed to improve the cooling of the magnets, letting the ends of the magnet wedges out of the rotor and forming said wedges from a material with high thermal conductivity as fan blades.