SU1494149A1 - Single-phase induction motor - Google Patents

Abstract

The invention relates to electric machines, namely single-phase asynchronous capacitor motors. The aim of the invention is to improve the energy performance and starting characteristics. Each section of the auxiliary winding is connected in series with a switch to the main winding in a sequence providing three rotational speeds. In this case, the beginning of the main and the beginning of the auxiliary windings are connected to the network. At different speeds of rotation, the polarity of both windings is the same and the spatial angle of 90 degrees between the axes of the magnetic fluxes of the main and auxiliary windings is maintained, which leads to an increase in energy performance and starting characteristics of the engine. 2 Il.

Description

The invention relates to the field of electrical engineering, in particular to single-phase acjiHxpoiuii.iM capacitor motors.

The aim of the invention is to improve the energy indicative and starting characteristics.

The pa of FIG. 1 is a diagram of the stator winding laid in the slots 1-24i in FIG. 2 a, b, c — curves of the magnetized forces of the main and auxiliary partitions.

In Fig. 1 - A is marked - the beginning of the main winding, B - the beginning of the auxiliary winding, Y ,, 2, YJ - the ends of the auxiliary winding groups of the Hoii winding, X the common offset of the switch.

For the case (fig, 2p), when the main winding connects the network to the network, and all sections help; the windings are connected in series with each other and with the capacitor and parallel to the main winding, and the end. the main winding is half-connected to the first junction of the switch Y, the first rotation frequency takes place.

For the case (fig. 2b), the cat and the main winding of the connection N1, h is mutually from the first and second time intervals of the auxiliary winding and is connected to the network, and TpeTi-n-inc-r gp p. connected consecutively cn {o | | and with capacitor and paral. KNT.no the main OBD, and KOiieu rjni; iinn windings under

with

four

with

connected to the second terminal of the switch Yj, the rotational speed occurs.

Lp case (Fig. 2b), when the main winding is connected in series with the first to fourth sections of the auxiliary winding and connected to the network, and the heel and pole of the auxiliary winding section are connected in series with each other and to the capacitor and parallel to the main winding, and the end of the main winding connected to the third terminal of the switch YJ, there is a third rotation frequency.

In the motor, by incorporating separate sections of the auxiliary winding into the main winding circuit, the magnetic flux emitted by this winding is reduced, thereby rotating the rotation frequency.

At all rotational frequencies, the magnetic flux in the air gap of the engine retains a symmetrical shape, and the axes of the resulting magnetic fluxes of the main and auxiliary windings are shifted in space by an angle

90 el. hail., which leads to improved energy performance and engine starting characteristics.

Claims (1)

Invention Formula Single-phase asynchronous motor containing a stator with chapters windings and auxiliary windings made of pole coils, a capacitor, one output of which is connected to the beginning of the auxiliary winding, and the other to the beginning of the main winding, and a switch, the common output of which is connected to the end of the main winding, and the other ends are used to connect the ends of the auxiliary winding , about tl and h-and y and with the fact that, for the purpose of power indicators and starting characteristics, the pole coils of the auxiliary winding are made in the form of coil groups, the conclusions of which are connected to Water switch, predvaznachenvym for connecting the ends of the auxiliary winding. , yy-ts 41 J i II J i