SU444298A1 - Unipolar AC Motor - Google Patents

Description

one

A unipolar motor is known, comprising a wheel-rotor made in the form of two disks of magnetically conducting and conducting elements rolling along rails, wherein these elements are lamellar and connected to one another only on one side, for example, in a wheel hub, and inductor of two pairs of magnets encircling each of its rotor discs.

However, when receiving and transmitting to the wheels of very significant currents, significant losses occur, in particular, in the brush contact, which supplies current to the ring associated with the wheel hub.

The proposed electric motor is equipped with a transformer, and the conductive shaft is wrapped around its magnetic core, and the secondary winding of the transformer is formed by the current-conducting elements of the disks, the shaft, rail sections and ground. In order to control the current without contact, the transformer can be equipped with controllable magnetic shunts. The conductive elements of the rotor can be rigidly fastened to the rectifying elements.

These differences make it possible to increase the efficiency. electric motor.

The drawing shows a schematic diagram of the proposed electric motor.

The magnetic core of the transformer 1, the flow in which is created by the primary winding 2 placed in the casing 3 (filled, if necessary, with oil or other cooling and nzoliruyuschim fluid), is also enclosed by the secondary turn, consisting of a tubular busbar 4, conductive terminals 5, isolated from steel wheels 6, a section of rail 7, a plot of land 8, a section of a second rail 9 of conductive elements 10 of a second wheel, tightly mounted, like elements 5, on a busbar 4 rotating with them. Current flowing through conductive elements 5 and 10, interaction is fixedly secured to a carriage 11 and electromagnets 12, which windings (not shown in the figure) are fed from the winding 13 of the transformer 1 through Phase-correction device 14 which supports the desired phase shift between the operating current and the drive current winding. The magnetic excitation circuit closes in front or behind the wheel, outside the plane of the pattern. In this interaction, a tractive force on the magnets and a moment on the wheel arise.

T hectares are realized, as in common modern traction engines, at the point of coupling the wheel to the rail.

For contactless control of the core current in the engine circuit in the design

The transformer may be provided with an adjustable magnetic shunt, the shunting effect of which can be changed, for example, by acting on the shunt-mounted paramagnetic, the winding, or by changing the gap in the shunt, or by some other known method. The excitation winding is fed from the windings located behind the shunt, in the magnetic circuit of the core (the effect of "sequential excitation), or in whole or in part from the windings located to the shunt.

For more convenient control, it is possible to optionally leave sushi, the first transformer and introduce control at the intermediate voltage of the primary winding of the proposed transformer. Excitation control is also possible in the absence of a separate transformer, using the relatively low voltage of the winding 13.

In order to reduce the resistance in the external pep, which is very significant at high currents flowing in this circuit, an armored transformer circuit can be used. In this embodiment, the core circuit — the secondary turn of the armored transformer is formed from the axles of two wheel pairs of one bogie and closes through a conductive element, for example, a front left wheel, a left wheel section, a rear left wheel conductive element, an axis or a tire, a rear conductive element the right wheel, the right rail section, the conductive element of the front left wheel and the other axis. The voltage on the primary winding can be supplied through insulators.

If there are low-voltage rectifiers for very large currents that can rotate with the shaft of the wheelset, it is possible to work with straightened crustal currents and, accordingly, also straightened or fed from an independent source of constant voltage - excitation currents. With an atom, the extremely simple execution of a wheel — a core in the form of an ordinary wheel, which is divided into sectors by narrow slits, is possible. This embodiment is possible for the variant with alternating current, but leads to a significant increase in losses.

To increase the strength of such a wheel, sectors can be fastened with additional linings that do not short the sectors between themselves.

Subject invention

Claims (2)

1. Unipolar electric motor of alternating current, containing a rotor with two disks, connected by a conductive shaft, mounted on rails and made in the form of alternating conductive and magnetically conductive elements connected in a hub, and an inductor of two pairs of magnets surrounding each of its disks characterized in that, in order to increase the efficiency, the electric motor is equipped with a transformer, the magnetic conductor of which carrying the primary winding covers the conductive shaft, and the secondary winding of the transformer is formed gadfly conductive elements drives, shaft portions of the rails and the ground. 2. The motor according to Claim 1, characterized in that the transformer is spun-driven magnetic shunt. P 14