SU750665A1 - Combined excitation synchronous machine inductor - Google Patents

Description

(54) SYNCHRONOUS COMBINE-ORDER MACHINE INDUCTOR The invention relates to electrical machines and relates to the improvement of inductors of synchronous apectric machines of combined excitation. The eye, in particular, can be used to create electric power generators, adjustable electric motors, electromagnetic clutches and brakes. A known inductor of an adjustable magnetoelectric generator, which contains prismatic permanent magnets mounted on an annular magnetic circuit, and a soft magnet placed on a shaft inside the magnetic circuit. An adjustment winding is located in the cavity between the magnetic core. 1 The disadvantage of such an inductor is that the reading depth is not important and the effectiveness of regulating the resulting magnetic flux of the generator is poor, carried out only by transverse adjustment of the shunt flux. The inductor's undoubted advantage lies in the rational placement of

EXCITATION control winding (under its rotating part) helps to reduce excitation losses. Also known is an inductor of a synchronous combined excitation machine, which contains an excitation winding on a stationary magnetic circuit and rotating permanent magnets united by a rod and klyuvooobrae poles, with the pole of the permanent magnet 2 located between each pair of beak-like poles, the last device closest to we advise on technical essence and the problem to be solved. The purpose of the invention is to reduce the power of regulation and reduce the size. This is achieved by the fact that between each pair of klyuvoobraznye poles of different polarity, an additional pole of a permanent magnet of opposite polarity is installed.

The invention is explained by | In the illustrations (the figures show an inductor with the number of poles 2p 8), where: in FIG. 1 shows a longitudinal section of an electric machine n & FIG. 2 is a section A-A in FIG. in fig. 3 shows a sweep of the inductor, a plan view.

The inductor consists of rotating part 1 with prismatic permanent magnets 2, installed in pairs on rome 3, forming an unregulated (constant) part of the inductor magnetic flux, and klyuvoobraznye poles 4 and 5, forming an independent system, excited by the winding 6, placed on a fixed parts of the inductor of the magnetic circuit 7. The bctfCTGMa permanent magnets and electromagnets are structurally connected by the diaphragm 8, which is connected to the Vendians 9 and 10 of the beams of poles 4 and 5.

The inductor works as follows.

In the absence of the excitation current in the coil 6, the flow of the permanent magnets 2 provides a confident self-sensing of the machine, part of the output power of which can be further used to excite the electromagnet poles and control the output parameters of the machine. Paths of magnetic flux of each

of the pole systems of the inductor shown in FIG. 1 and 2 arrows. The absence of interlocking sections of fluxes of the cranial poles and permanent magnets ensures maximum magnetic insulation of the systems and favors the expansion of the actual depth of adjustment, bringing it closer to the theoretical limit in each particular design of such an inductor.

The technical solution proposed in the present description makes it possible to construct inductors of combined excitation symmetrically in the electromagnetic relation with the number of poles 2p 4 (p-1), where P 1, 2, 3, etc. If necessary, the inductor can be made in the face version . Reversing the current in the field winding allows switching the poles of the inductor in a 2: 1 ratio.

Claims (2)

1. USSR author's certificate No. 481106, cl. H 02 K 21/14, 1968. 2. USSR author's certificate No. 188563, cl. H 02 K 21/14, 1962.