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One manufactures rotor winding with at least four poles (P) of the stator (11) excitation and a collector rotor (13) having grooves (N) and pole cogs (Z) (the number whereof is other than that of excitation poles), coils (S) wound onto individual pole cogs and the same number of collector plates (L) being at least twice in excess of that of the pole cogs. Each coil beginning with the first one (S1) is wound onto the pole cog for which angular deviation (Wf) from the angle determined by the polar pitch (Pt) is the minimum. For simplification of the winding wire (17) laying within the zone of its connection to the collector plates it is stipulated that, at least for the coils (S) of the winding line (B) which is the last to be wound (and preferably - for all the winding coils), the winding wire (17) being placed in contact with the collector plate (L) between two coils (S) is led to the plate (L) on one side and led from the plate - on the other side. Positioned between the grooves (N) wherefrom the winding wire (17) is led to the plate (L) and the groove whereto (N) the wire is led from the plate is at least one pole cog (Z) but no more than to pole cogs (Z). |
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Proposed electric motor comprises an anchor core, a collector comprising multiple collector plates, a journal arranged between the anchor core and the collector, and multiple wires, every of which is connected between two adjacent collector plates and is wound around the anchor core via the journal. Wires comprises the first wire, attached between the first two adjacent collector plates, and the second wire attached between second two adjacent collector plates, arranged oppositely to the first two adjacent collector plates relative to the axis of the anchor core. The first wire and the second wire pass along the anchor journal so that they do not contact with each other. |
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FIELD: electrical engineering; direct current machines. SUBSTANCE: direct current machine comprises a stator, an armature fixed on a rod, a contact device in the form of annular rings insulated from each other which contact with brush electrodes used for current feed and collecting from the start and the finish of the coil, end shields, a controlled solid-state switch which activates bipolar transistors and resistors between the electrodes of the emitter and the base and which is connected to its control device. The control device of a solid-state switch consists of brush electrodes which receive the control signal, a brush electrode giving the control signal, and two rings fixed on the rod and insulated from this electrode. One of these rings is made from a conductive material, while the second ring is cut into two sections, one section is made from a conductive material and connected with the solid ring of the control device, and the second section is made from insulating material. All brush electrodes are installed with the possibility to connect them with the sectioned ring and are connected with the control electrode of the semiconductor elements of the solid-state switch, while the brush electrode giving the control signal is installed with the possibility to connect with the solid ring of the control device and is connected with the brush electrodes receiving the signal at the moment of the connection of these brushes with the conductive part of the sectioned ring. Furthermore, the contact device is made in the form of four solid conductive rings. One of these rings is connected with the start of all armature coils, while all other rings are connected with the finish of the respective coils. The conductive section of the ring is made in the form of a 120° section, whereas there six electrode brushed that receive the control signal positioned with a 60° angle between them. In addition, the machine includes a relay with an option to switch the positive pole of the feeding line from the solid-state switch to the start of the coils. EFFECT: prevention of sparking, radio interference and noise, improvement of adjusting characteristics, simplification of the device's manufacturing technique and increase of the direct current machine's efficiency. 3 cl, 10 dwg |
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Electric machine with fractional tooth winding Proposed electric machine (10) includes at least eight excitation poles (P) located in stator (11) and collector rotor (13) with pole teeth (Z) the number of which differs from the number of excitation poles; at that, on pole teeth there located is at least one section (S) of winding the ends of which are connected to commutator bars (L) which are electrically connected in pairs to each other by means of contact jumpers (K), are supplied with electric power through carbon brushes (B) and the number of which is divisible by the number of pole teeth. At that, according to this invention, the above number of commutator bars (L) in this electric machine is divisible by the half of the number of pairs (P) of excitation poles, but is not divisible by the number of pairs of poles, which is even. |
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Equalising connection of second type Invention relates to the field of electric engineering, namely to DC electric machines with duplex lap winding of anchor, when deciding factor is simplicity and manufacturability of assembly of applied equalising connections of the second type. Beginning of equaliser is connected to collector plate of considered section, and connection itself is arranged in the form of turn laid till the middle of axial length of anchor slots, where this section is installed. |
Another patent 2550907.