Abstract: A cylindrical linear induction motor comprises an inductor having a laminated core structure formed of individual circular cores with slots adapted to receive a polyphase winding. The slots receiving the polyphase winding are arranged uniformly on the internal surface of the cores, one core being disposed with respect to the other so that the slots for like phases of the winding are displaced over a distance equal to or greater than the distance between the contiguous slots of one core.

Abstract: A linear induction motor comprising an inductor with a magnetic core structure formed of first-group laminations extended in one direction and interconnected by means of second-group laminations extended in another direction transversely of the first direction and with a polyphase concentrated winding and a secondary element having an electrically conductive part arranged on a magnetically conductive base, each first-group lamination being provided with at least four slots and each second-group lamination having an inverted U-shape configuration. Each coil of the polyphase concentrated winding encompasses one of rods of at least one of the first-group laminations and one of rods of at least one of the second-group laminations. Coils in each row extended in the first direction have a forward phase rotation up to the middle of the row and a reverse phase rotation thereafter. Coils in each row extended in the second direction have a forward phase rotation.

Abstract: A linear induction motor comprises an inductor that has a multiphase concentrated winding and a magnetic circuit made of a plurality of transversely laminated cores, and also comprises a secondary element having an electrically conductive member disposed on a magnetically conductive base. The yoke of each of said cores has a hole, a spring is located between each pair of adjacent cores, and a rod is adapted to pass through the holes and the springs, said rod being coupled with a regulation element. The invention makes it possible to accelerate and brake smoothly high-speed ground transportation vehicle so that more safe conditions for a vehicle's crew are provided.

Abstract: A linear induction motor comprises a current-conducting secondary element of a U-shaped cross-section, accommodating an inductor. The inductor has laminated U-shaped and E-shaped cores carrying a polyphase winding. Each E-shaped core is arranged between two U-shaped cores. The polyphase winding comprises two parts each coil of which encompasses respective outermost legs of E-shaped cores and respective yokes of the U-shaped cores which are juxtaposed to said outermost legs.

Abstract: A linear induction motor comprises an inductor made of individual cores with a concentrated polyphase winding placed thereupon and having legs connected by a yoke. A secondary element located on the leg butt side is provided with a magnetically conductive base intended to close the magnetic flux in the transverse direction with respect to the motion and whereon the main electrically conductive part is positioned. The butts of the lateral core legs have main chamfers on the inside, whereas respective surfaces of the main electrically conductive part of the secondary element are made congruent to the main chamfers of the butts of the lateral legs. In this case the magnetically conductive base has a surface congruent to respective surfaces of the main electrically conductive part.

Abstract: A linear induction motor comprising an inductor formed of a laminated core structure with slots adapted to receive a polyphase winding. It also comprises a secondary element with respect to which the inductor moves. The secondary element includes an electrically conductive part arranged on a magnetically conductive base. Each lamination transversely of inductor movement has an inverted U-shaped configuration and a varying height and width so that a larger lamination encompasses a smaller lamination.

Abstract: An asynchronous line-fed motor comprising an inductor composed of individual laminated cores which form two rows extending in the direction of travel of the magnetic field. Each laminated core is formed by rods having pole shoes at one end and enveloped by yokes at the opposite end. The pole shoes of the laminated cores of the second row link the laminated cores of the first row to one another and are interposed between the pole shoes of the laminated cores of the first row. The yokes of the laminated cores of the first and second rows face in opposite directions. Coils of a concentrated multiphase winding are wound around the yokes of the laminated cores. The motor also includes a secondary current-carrying element disposed in the air gap between the pole shoes of the laminated cores.

Abstract: An electromechanical energy converter comprises a linear induction motor and a switching assembly. The linear induction motor includes an inductor formed of individual transversal laminations with windings and a secondary element. The transversal laminations are provided with slots and the winding of each transversal lamination is a distributed winding having sections connected to the switching assembly which either connects the winding of one transversal lamination to one phase of an a.c. power source and the windings of the subsequent laminations to the other phases thereof or connects the winding of each transversal lamination to all phases of the a.c. power source. This invention permits a longitudinal or transversal movement of the inductor and uniform transversal distribution of a magnetizing force within an air gap between the inductor and secondary element.

Abstract: A linear induction motor comprises an electrically conductive secondary element of a rectangular cross-section and an inductor. The inductor has laminated U-shaped and E-shaped cores, each carrying a polyphase winding. The laminated cores of each shape make up two respective rows in each of which they are arranged one after another with their bases facing respective faces of the secondary element. The outermost legs of each pair of the E-shaped cores in both rows are disposed between the adjacent U-shaped cores of each row without a gap so that the bases of the E-shaped cores and the bases of the U-shaped cores of the respective rows define non-serrated active areas.

Abstract: A linear induction motor comprises an inductor made of one row of main U-shaped transversely laminated cores and not more than two rows of such additional cores which are enveloped by a main polyphase distributed winding and an additional polyphase distributed winding, respectively, and a secondary element interacting with the inductor. The secondary element is provided with an electrically conductive part placed upon a magnetically conductive base. Legs of the main and additional U-shaped cores alternate and adjoin one another forming two toothless active zones through which the secondary element interacts with the inductor.

Abstract: An asynchronous line-fed motor comprising an inductor with a concentrated multiphase winding and a magnetic circuit, and a secondary current-carrying element arranged close to the inductor and separated by an air gap from the magnetic circuit which comprises two groups of laminated cores formed by rods which are linked by a yoke. The lamination of cores of the first group is perpendicular to the direction of travel of the magnetic field; the lamination of the cores of the second group is parallel with the direction of travel of the magnetic field. The laminated cores of the second group are trapezium-shaped; their rods are received in slots of the laminated cores of the first group to produce active zones with flat surfaces, facing the secondary current-carrying element.

Abstract: A linear induction motor comprises an inductor with a magnetic core structure formed of first- and second-group laminations and with a polyphase concentrated winding, and a secondary element having an electrically conductive part arranged on a magnetically conductive base. The first-group laminations are extended at right angles to the direction of movement of the inductor and are interconnected by means of the second-group laminations extended in the direction of movement of the inductor. Each first-group lamination has n slots. Rods of the first-group laminations fit tightly in slots of the second-group laminations so that no gaps exist therebetween and toothless active zones are formed in the direction of movement of the inductor, whereas appropriate gaps are provided between the yokes of the first- and second-group laminations. The polyphase concentrated winding includes two groups of coils.

Abstract: A linear induction motor comprises an inductor, which has a magnetic circuit comprised of first and second groups of laminated cores and also has a multiphase concentrated winding, and a secondary element having an electrically conductive member disposed on a magnetically conductive base. The laminated cores of the first group are arranged in a perpendicular relation to the direction of movement of the inductor and are connected one to another with the help of the laminated cores of the second group which are positioned along the direction of movement of the inductor.

Abstract: A linear induction motor comprising an inductor with a multiphase concentrated winding, a magnetic circuit, including groups of laminated cores, and an electrically conducting secondary element disposed within the inductor and separated by an air gap from the legs of the laminated cores whose laminations are directed perpendicular to the direction of movement of the magnetic field. In each of said groups, the laminated cores have their axes of symmetry positioned in a plane perpendicular to the direction of movement of the magnetic field and shifted circumferentially relative to one another by a given angle .alpha., while the axes of symmetry of the laminated cores of a subsequent group are shifted relative to the axes of symmetry of the laminated cores of a preceding group by an angle .alpha./2.

Abstract: A linear induction motor comprising an inductor formed of three rigidly interconnected longitudinal laminations provided with slots. The slots arranged on the side of a secondary element are adapted to receive motor windings. The secondary element includes an electrically conductive part formed of two angles and arranged on a ferromagnetic base. Horizontal flanges of the angles are arranged under the two extreme inductor laminations and apexes of the angles face each other. The middle inductor lamination is enclosed within the gap between vertical flanges of the angles so that slots therein are turned in the direction of one of the angles. The middle lamination is provided with slots arranged symmetrically with respect to the slots on the side of the first angle and suited to receive an additional winding.

Abstract: A linear induction motor comprising an inductor formed of individual transversal laminations surrounded by a main polyphase concentrated winding and provided with rods interconnected by means of a yoke. It also comprises a secondary element with respect to which the inductor moves. The secondary element has an electrically conductive part arranged on a magnetically conductive base. Each lamination is provided with two additional polyphase windings the magnetizing force of which sets up magnetic fields travelling in opposite directions transversely of inductor movement. The end faces of the lateral rods of the core structure are provided with slots arranged on the side of the secondary element and adapted to receive the additional polyphase windings.