SU171905A1 - synchronous motor with open magnetic circuit - Google Patents

Description

Synchronous motors with an open magnetic circuit are known.

The proposed motor differs from the known ones in that its magnetic system is made but of the opposite-pole inductor machine type. The magnetic system of the engine can be made according to the type of magnetic system of the induction machine Gui, in which the number of half-poles is twice the number of phases, and each multiphase power winding coil and excitation winding coil cover but two half poles, except for two extreme winding coils, which cover only one semi-pole . This increases the reliability of the engine.

The motor can operate in asynchronous modes, for which the excitation winding closes on the capacitance.

The drawing shows a constructive scheme of a predlozhenny engine consisting of a toothed blended stator / made in the form of an arc and attached to a toothed rotor 2 combined with a mechanism. On the half-poles of 3 stator / there are winding core 4 and excitation winding 5. On the stator / there are 2 tK semi-poles, each of which can have a teeth (t is the number of phases, 2, 3 ... integer). In the large slots of the melada half-poles laid coil-power winding

and field windings. the coil covers two half-poles, except for the two extreme coils of the winding of the excitation, covering one half-pole.

The pitch along the teeth of the rotor is equal and constant pitch along the teeth of the stator within each nolupole.

The stator grooves covered by the field windings and the core winding alternate. The step along the stator teeth of the adjacent half-poles covered by the winding coils, it is advisable to choose from:

1 (+). „,

and along the stator teeth of semi-poles covered by the field winding coils, of the condition:

(+ T ± 2) where nc is the step along the teeth of the inductor, and Ki and Kz are integers determined from the condition of providing sufficient space for the placement of the windings.

The number of teeth on the half pole is chosen larger than one, and their width is less than half the tooth division of the rotor.

the rotor always strives by the position of its teeth to ensure maximum flow coupling of the windings, i.e. it rotates at a synchronous speed.

The motor can be started by adjusting the frequency of the supply voltage.

Subject invention

Claims (3)

1. Synchronous motor with open magprovod, characterized in that, in order to increase reliability and ensure low-speed, the magnetic system is made according to the type of magnetic system of opposite pole inductor mashiny. 2. The motor according to claim 1, characterized in that the magnetic system is performed according to the type of magnetic field of the Gui inductor mashine, in which the number of half-poles is multiple to twice the number of phases and each power winding coil and excitation winding coils cover two half-poles except for the two extreme winding coils excitations spanning one half pole each. 3. The engine for PP. 1 and 2, characterized in that, in order to provide an asynchronous mode of operation, the field winding is closed on the capacitor.