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Low-noise energy-saving electric drive Low-noise energy-saving electric drive includes rotary electric machine with number of poles of 2p, equal to 4 or more, and control device. An asynchronous motor with combined winding is used as the machine. The control device comprises p controllers; at that one of them may be the master controller, while other ones may be slave controllers. Moreover each pair of poles is supplied with power from a separate controller. |
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Combined winding for electric machine designed per 2p=12, z=36 Combined winding for electric machine designed with number of pole pairs of 2p=12 and number of slots of z=36 for a number of parallel branches of a=1, 3 or 6 includes spatial combined composition of two three-phase windings, at that one winding is wye-connected, while the other one is delta-connected. Ratio of wye and delta turns is 3 . At that equal number of slots is assigned to each phase and shift between neighbouring poles of wye and delta is 0.5 of a slot. |
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Economic double-layer winding of electrical machine In a double-layer winding of an electrical machine that includes active conductors placed in the core slots and end-coil conductors placed over end surfaces of this core, wherein the significant number of joints of ends of the end-coil and active conductors are placed near edges of the end surface of a tooth-and-slot area of the core and the above joints have the area of connection less than the square area of cross-sections averaged against the slot length of the connected active conductors of the winding, the active conductors with the reduced square area of joints are made so that the cross-section area of their ends is increased step-by-step in the direction to the slot centres, and the end-coil conductors are made so that the cross-section area of their ends is increased step-by-step in the direction to the centres of these end-coil conductors. |
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Single-phase low-speed current generator Single-phase low-speed current generator comprises rotor with multipole system of permanent magnets, stator with windings, which outputs are connected to the respective rectifying units; the stator is made single-section, quantity of the rotor poles differ per one from quantity of the stator windings, the stator magnetic circuit is toothed, the stator windings are placed at teeth of the magnetic circuit and divided into two halves, at that the stator windings in each half are in-series connected with change in polarity to the opposite one of each next polarity in regard to the previous polarity, and connection for polarity of the last stator winding in the first half with the first stator winding in the second half are selected on condition of polarity change for all coils in the second half coupled with field direction alternating to the opposite polarity, at that free end of the respective first winding in the first half and free end of the respective last winding in the second half are outputs of the generator single-phase circuit. |
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Electrical machine and actuation of this electrical machine This invention is referred to an electrical machine, in particular, the electrical machine represents a synchronous generator designed so that it may be connected to a gas turbine or a hydroturbine. The electrical machine comprises the first rotor core with the first rotor winding, the first stator core with the first stator winding, an excitation device to feed current to the first rotor winding. The above excitation device includes the second rotor core with the second rotor winding. The second rotor winding is connected to the first rotor winding with rotation capability. The electrical machine contains also the second stator core with the second stator winding. The second rotor winding and the second stator winding are represented by polyphase windings. The first and second rotor windings are interconnected. The excitation device represents an asynchronous machine. |
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Multiphase ac electric machine Invention is referred to the area of electric engineering, and namely to multiphase AC electric machines, and may be used for household appliances when the usage of compact-sized electric machines with high power performance is required. The suggested multiphase AC electric machine comprises a rotor and a toothed stator with an m-phase winding, at which each coil covers one tooth and diametrically opposed coils of the same module phase are connected accordantly and the modularity of the stator winding is related to the number of the stator teeth by the following formula: Zs=2·m·M, where Zs is the number of the stator teeth, m is the quantity of phases, M=p=1, 2, 3 … up to a technologically reasonable value - the quantity of modules equal to the number of pole pairs, at that the rotation speed of the electric machine magnetic field is defined as Ω=2·π·f/M, where f is the frequency of the supply mains, M is the quantity of modules. |
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Slow-speed electric generator with permanent magnets Invention relates to electric engineering, in particular to low-speed high torque synchronous motor and generators with fixed rotor and rotating magnets, and can be used as wind generator, HF electric generators and in self-contained electric power installations. The slow-speed electric generator with permanent magnets contains rotor in form of two flat disks, stator is located between the rotor disks, and is made as ring connected with fixed shaft by spikes, armature winding wound on the ring-toroid, magnets with alternating poles, installed on side parts of the rotor in slots in number from 80 to 250 per each disk. The rated speed of the rotor is 30 rpm. |
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Invention relates to a power-driven tool equipped with a three-phase brushless electric motor, and more precisely to a control method of an output characteristic of the electric motor of the power-driven tool. The power-driven tool includes a brushless motor that includes a rotor with a constant magnet, a cylindrical stator and three-phase stator windings. Multiple slots are made on the inner surface of the stator at specified intervals in a circumferential direction. Each of the three stator windings is formed with multiple coils wound in the slots of the stator and connected to each other. Total number of coil turns wound in the slots of each phase is the same for three phases and is not divisible by the number of slots of each phase. |
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Combined winding of induction machine for 2p=4, z=36 Combined winding of the induction machine with number of pole pairs 2p=4 and number of slots z=36 for number of parallel branches a=1 or 2 is made with pitch y=1-10 and contains 12 coils. Number of turns m"з" of odd coils and number of turns m"тр" of even coils comply with ratio m ' ' т р " / m " з " = 3 . |
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Winding design for a rotating electrical machine includes the core with slots and a coil comprising the first and second windings combined by their intercrossing. Each straight section of the coil is inserted to one of two slots made with the preset interval so that the core is assembled at the core. |
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Integrated winding of synchronous machine for 2p=2, z=18 Invention enables to produce energy-efficient electrical machines, particularly high-performance, high-torque low-noise asynchronous motors. The disclosed integrated winding of an asynchronous machine with the number of pairs of poles 2p=2, with the number of grooves z=18 for the number of parallel braches a=1 is made with spacing y=1-10 and 6 has coils, wherein the number m"з" of turns of odd coils and the number m"тр" of turns of even coils satisfies the relationship m / " т р " m = " з " 3 . |
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Stator of rotating electric machine with constant excitation In the middle of the first coil group (10a) there is a middle tooth (8a), which has the first MB width of the middle tooth. A stator (5) has the second group (10b) of coils. The first and second groups of coils are placed in the circumferential direction (U), directly in sequence one after another. Between the first and second groups of coils there is the first edge tooth (9), which has the first RB width of the edge tooth. In essence the first RB width of the edge tooth is equal to RB=a·ZB, and the first MB width of the middle tooth is equal to MB=(2-a)·ZB. The coefficient a is bigger than 0 and less than 1. |
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Rectifying free-running asynchronous generator Invention is related to the sphere of electric equipment and may be used for production of rectifying asynchronous generators of stand-alone power plants. Technical result is attained by the reason that in a rectifying free-running asynchronous generator with capacitor excitation and a stator winding made of six coil group having outputs, according to this invention, the first output of the winding is taken from the united end of the fourth and beginning of the first coil groups, the second output of the winding is taken from the united end of the first and beginning of the second coil groups, the third output is taken from united end of the sixth and beginning of the third coil groups, the fourth output is taken from the united end of third and beginning of the fourth coil groups, the fifth output is taken from the united second and beginning of the fifth coil groups, the sixth output is taken from the united end of the fifth and beginning of the sixth coil groups, in parallel to the above stator windings there are six in-series delta connected excitation capacitors, which can connect these capacitors and outputs of the second, fourth and sixth capacitors as per the wye-wye connection scheme and the load is connected to these outputs in compliance with the voltage value and phase number matching the required load. |
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Multifunctional free-running asynchronous generator Invention is related to the sphere of electric equipment and may be used for production of asynchronous generators of stand-alone power plants. Technical result is attained by the reason that in a multifunctional free-running asynchronous generator with capacitor excitation and a stator winding made of six coil group having outputs the first output of the winding is taken from the united end of the fourth and beginning of the first coil groups, the second output of the winding is taken from the united end of the first and beginning of the second coil groups, the third output is taken from united end of the sixth and beginning of the third coil groups, the fourth output is taken from the united end of third and beginning of the fourth coil groups, the fifth output is taken from the united end of the second and beginning of the fifth coil groups, the sixth output is taken from the united end of the fifth and beginning of the sixth coil groups, in parallel to the above stator windings there are six in-series delta-connected excitation capacitors, which can connect these capacitors and outputs of the second, fourth and sixth capacitors as per the wye-wye connection scheme and the load is connected to these outputs in compliance with the voltage value and phase number matching the required load. |
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Asynchronous generator with eight-pole stator winding Invention is related to the sphere of electric equipment and may be used in asynchronous generators of stand-alone power plants. One part of a phase winding with a large vector sum of load and exciting currents is made with a heavy-gage wire, while the other part of the phase winding with a less vector sum of load and exciting currents is made with a wire of the lesser gage. In the suggested asynchronous generator with the eight-pole stator winding out of twenty four coil groups (from the first up to the twenty fourth) and excitation capacitors, according to the invention, the first output is taken from the united beginning of the first coil group and ending of the sixth one, the second output is taken from the united end of the second coil group and beginning of the third one, the third output is taken from the united end of the fourth coil group and beginning of the fifth one, the fourth output is taken from the united end of the nineteenth coil group and beginning of the twentieth coil group, the fifth output is taken from the united end of the twenty first coil group and beginning of the twenty second coil group, the sixth output is taken from the united end of the twenty third coil group and beginning of the twenty fourth coil group; at that the end of the first coil group is connected to the beginning of the seventh coil group, the beginning of the second group is connected to the end of the eighth group, the end of the third coil group is connected to the beginning of the ninth group, the beginning of the fourth group is connected to the end of the tenth group, the end of the fifth coil group is connected to the beginning of the eleventh group, the beginning of the sixth group is connected to the end of the twelfth group, the end of the seventh coil group is connected to the beginning of the thirteenth group, the beginning of the eighth group is connected to the end of the fourteenth group, the end of the ninth coil group is connected to the beginning of the fifteenth group, the beginning of the tenth group is connected to the end of the sixteenth group, the end of the eleventh coil group is connected to the beginning of the seventeenth coil group, the beginning of the twelfth group is connected to the end of the eighteenth group , the end of the thirteenth coil group is connected to the beginning of the nineteenth coil group, the beginning of the fourteenth group is connected to the end of the twentieth group, the end of the fifteenth coil group is connected to the beginning of the twenty first coil group, the beginning of the sixteenth group is connected to the end of the twenty second group, the end of the seventeenth coil group is connected to the beginning of the twenty third coil group, the beginning of the eighteenth group is connected to the end of the twenty fourth group, at that the excitation capacitors are connected to the first, second and third outputs and the generator load is connected to the fourth, fifth and sixth outputs. |
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Front links for connection of turn groups are arranged above the end surface of the tooth area of the core with that part of the slots, where the winding layer is available, rods of which they connect, places of connections of turn front links with rods of that layer of winding, above which there are front links for connection of turn groups, arranged at the side of centres of the core slots. Places of connections of at least most other front links with the rods of the upper layer of the winding are arranged at the side of the tooth surface of the core, and places of connections of these front links with rods of the lower layer of the winding are arranged at the side of the core back. |
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Winding of stator of three-phase alternating-current electric machines Stator winding includes three single-phase windings formed with equal number of coils arranged in slots. Coils are connected to each other as per equal schemed providing spatial displacement of axes of windings through 120 degrees. Each of the single-phase windings throughout double pole division of the stator is formed with 2Z/2pm coils that include Z/2pm groups with similar number of coils in groups. Each of the groups of coils has different width of coils included into it and different number of turns forming coils in comparison to other groups of coils. Besides, coils of one of the groups have minimum width with minimum number of turns. Width and number of coil turns of every next group have different width and number of coil turns of the previous group. Coils with larger width and larger number of turns are arranged concentrically relative to coils with minimum width and minimum number of turns. Some parts of the volume of slots, which remain free after laying of coils of this single-phase windings, are used for arrangement of coils of two other single-phase windings that are made in a similar way. |
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Low noise induction motor comprises two mutually dependent combined windings, one of which is assembled as "star", and the second one - as "delta". These windings are laid into slots so that resulting vectors of induction of magnetic flows of pole pairs in identical phases of "star" and "delta" form an angle of 30 el. degrees between each other. |
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Autonomous induction generator with bipolar stator winding In the suggested autonomous asynchronous generator bipolar stator winding including twelve coil groups consists of a triangle scheme formed by the second and eighth, fourth and tenth, sixth and twelfth coils groups with the first, second and third outputs to which excitation capacitors are connected and star scheme formed by the first and seventh, third and tenth, fifth and eleventh coil groups with the fourth, Fifth, sixth and seventh outputs; at that the first output is taken from the beginning of united beginnings of the second and twelfth coil groups; the second output - from united beginnings of the fourth and sixth coil groups; the third output - from united beginnings of the eighth and tenth coil group; the fourth output - from beginning of the first coil group; the fifth output - from beginning of the fifth coil group; the sixth output - from united beginnings of the third, seventh and eleventh coil group; the seventh output - from beginning of the ninth coil group. The end of the first coil group is connected to the end of the seventh coil group; the end of the second coil group is connected to the end of the eighth one; end of the third coil group is connected to the end of the ninth one; end of the fourth coil group - with the end of the tenth one; end of the fifth coil group - with the end of eleventh one; end of the sixth coil group is connected to the end of the twelfth coil group; additionally, the first, second and third outputs of the triangle scheme and the fourth, fifth and seventh outputs of the star scheme are interconnected in pairs by compensation capacitors connected in-series and common points of these capacitors connection have outputs to connect load to the generator. |
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Six-phase winding of alternating current machine According to this invention winding of alternating current machine with fractional number of slots Q per a pole and phase (both for Q> 1 and Q< 1) is made as per scheme "two stars under 30 el. degrees", with denominator C corresponding to the relationship C = 6·k ± 1, where k = 1, 3, 5 …. |
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Four-pole stator winding of asynchronous generator In double-pole stator winding of asynchronous generator consisting of 12 coil groups the end of the 1st coil group is connected to beginning of the 7th one; the end of the 8th coil group is connected to beginning of the 2nd one; the end of the 3rd coil group is connected to beginning of the 9th one; the end of the 10th coil group is connected to beginning of the 4th one; the end of the 5th coil group is connected to beginning of the 11th one; the end of the 12th coil group is connected to beginning of the 6th one; outputs are taken from the joined end of the 7th group and beginning of the 8th one; from the joined end of the 9th group and beginning of the 10th one; from the joined end of the 11th group and beginning of the 12th one; from the joined end of the 4th group and beginning of the 1st one; from the joined end of the 6th group and beginning of the 3rd one; from the joined end of the 2nd group and beginning of the 5th one. |
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Four-pole stator winding of asynchronous generator In double-pole stator winding of asynchronous generator consisting of 12 coil groups the end of the 1st coil group is connected to beginning of the 7th one; the end of the 8th coil group is connected to beginning of the 2nd one; the end of the 3rd coil group is connected to beginning of the 9th one; the end of the 10th coil group is connected to beginning of the 4th one; the end of the 5th coil group is connected to beginning of the 11th one; the end of the 12th coil group is connected to beginning of the 6th one. Outputs are taken from the joined end of the 6th group and beginning of the 1st one; from the joined end of the 2nd group and beginning of the 3rd one; from the joined end of the 4th group and beginning of the 5th one; from the joined end of the 2nd group and beginning of the 3rd one; from the joined end of the 7th group and beginning of the 8th one; from the joined end of the 9th group and beginning of the 11th one. |
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Electric machine, in particular, three-phase asynchronous hydrogenerator Invention relates to design of electric machines, in particular, a three-phase asynchronous hydrogenerator with a rotor and a stator, and also with a winding comprising multiple winding rods (17, 18) stretching in axial direction, lying above each other in appropriate slots of the yoke winding, besides, winding rods (17, 18) protrude from the winding slots at the ends of the machine and in the front part (13 a, b) of the winding according to the specified circuit are multiply pairwise electrically connected to each other, besides, the upper rod (18) of the winding of the first winding slot and accordingly the second rod (17) of the second winding slot is therefore bent to each other, so that their ends (21, 22) in axial direction cross above each other, and the connection (16) of the winding rods (17, 18) of the electrically connected pair of winding rods is carried out with the help of a solid connection element (27). At the same time, according to this invention, the ends of electrically connected to each other winding rods (17, 18) the windings are made as straight tabs (21, 22) of rectangular section, and the connection element is made as a round eyelet (27) aligned in the radial direction, having two radially crossing above each other support surfaces (28, 29) for arrangement of on the tabs (21, 22) of the winding rods (17, 18) connected with each other. |
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Stator winding of welding asynchronous generator Stator winding of a welding asynchronous generator comprises twelve coil groups with leads and connection of the end of the second coil group with the end of the eighth coil group, the end of the fourth coil group with the end of the tenth coil group, the end of the sixth coil group with the end of the twelfth coil group and excitation capacitors differing by the fact that the first lead of the winding is taken from the start of the twelfth coil group, the second lead of the winding is taken from combined starts of the first, sixth and eleventh coil groups, the third lead of the winding is taken from the start of the eighth coil group, the fourth lead of the winding is taken from combined starts of the second, seventh and ninth coil groups, the fifth lead of the winding is taken from the start of the fourth coil group, the sixth lead of the winding is taken from combined starts of the third, fifth and tenth coil groups, at the same time the end of the first coil group is connected with the end of the seventh coil group, the end of the third coil group is connected with the end of the tenth coil group, the end of the fifth coil group is connected with the end of the eleventh coil group, the end of the second coil group is connected with the end of the eighth coil group, the end of the fourth coil group is connected with the end of the tenth coil group, the end of the sixth coil group is connected with the end of the twelfth coil group, the first, second and third excitation capacitors are connected with leads by the first, third and fifth winding leads, and the three-phase rectifier is connected with the second, fourth and sixth leads of the stator winding. |
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Dipolar stator winding of asynchronous generator Dipolar stator winding of an asynchronous generator consists of twelve spool groups and excitation capacitors; the end of the first spool group is connected to the end of the seventh spool group, the beginning of the second one - to the beginning of the eighth one, the end of the third spool group - to the end of the ninth spool group, the beginning of the fourth spool group - to the beginning of the tenth spool group, the end of the eleventh spool group - to the end of the fifth spool group, the beginning of the twelfth spool group - to the beginning of the sixth spool group; the winding first output is taken from the conjoined end of the tenth spool group and beginning of the first one, the winding second output - from the conjoined beginning of the seventh spool group and end of the eighth one, the winding third output - from the conjoined end of the second spool group and beginning of the fifth one, the winding fourth output - from the conjoined beginning of the eleventh spool group and end of the twelfth one, the winding fifth output - from the conjoined end of the sixth spool group and beginning of the ninth one, the winding sixth output - from the conjoined beginning of the third spool group and end of the fourth one; the first, second and third excitation capacitors are connected to the winding first, third and fifth outputs. |
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Four-pole stator winding of asynchronous electric machine Four-pole stator winding of an asynchronous electric machine comprises 12 coil groups, at the same time the end 1 of the coil group is connected with the start 7, the end 7 - with the start 8, the end 8 - with the start 2, the end 3 - with the start 9, the end 9 - with the start 10, the end 10 - with the start 4, the end 5 - with the start 11, the end 11 - with the start 12, the end 12 - with the start 6, leads are taken from the start 1, from the start 3, from the start 5, from the end 2, from the end 4, from the end 6, from coil groups of combined end 7 and start 8, from combined end 9 and start 10 of coil groups, from combined end 10 and start 12 of coil groups. |
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Six-pole stator winding of inductor motor Invention is related to the sphere of electric equipment and may be used in production of multifunctional induction electric machines. A six-pole stator winding of an induction motor comprises 18 coil groups, at the same time the end of the coil group 1 is connected to the beginning of the group 7, the end of the group 7 - to the beginning of the group 13, the end of the group 13 - with the beginning of the group 14, the end of the group 14 - with the beginning of the group 8, the end of the group 8 - with the beginning of the group 2, the end of the group 3 - with the beginning of the group 9, the end of the group 9 with the beginning of the group 15, the end of the group 15 - with the beginning of the group 16, the end of the group 16 - with the beginning of the group 10, the end of the group 10 - with the beginning of the group 4, the end of the group 5 - with the beginning of the group 11, the end of the group 11 - with the beginning of the group 17, the end of the group 17 - with the beginning of the group 18, the end of the group 18 - with the beginning of the group 12, the end of the group 12 - with the beginning of the group 6, outputs (19 - 24) are taken from the combined end of the group 17 and the beginning of the coil group 18, from the combined beginning of the group 1 and the end of the coil group 4, from the combined beginning of the group 3 and the end of the coil group 6, from the combined beginning of the group 5 and the end of the coil group 2, from the combined beginning of the group 14 and the end of the coil group 13, from the combined beginning of the group 16 and end of the coil groups 15. |
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Dipolar winding of asynchronous generator Invention relates to the field of electrical engineering and may be used, in particular, in asynchronous generators with capacitor excitation for autonomous power plants. A dipole winding of an asynchronous generator is proposed, which comprises twelve coil groups with outputs and a certain logic of coil groups connection, in which the first output of the winding is taken from combined beginnings of the first, second and twelfth coil groups, the second output of the winding is taken from combined beginnings of the third, seventh and eleventh coil groups, the third output of the winding is taken from combined beginnings of the fourth, fifth and sixth coil groups, the fourth output of the winding is taken from the combined beginnings of the eighth, ninth and tenth coil groups, at the same time the end of the first coil group is connected with the end of the seventh coil group, the end of the second coil group is connected with the end of the eighth coil group, the end of the third coil group is connected with the end of the ninth coil group, the end of the fourth coil group is connected with the end of the tenth coil group, the end of the fifth coil group is connected with the end of the eleventh coil group, the end of the sixth coil group is connected with the end of the twelfth coil group, and the first, second and third capacitors of excitation are connected to the first, second and third outputs of the winding. |
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Dipole stator winding of asynchronous electric machine Dipole stator winding of an asynchronous electric machine comprises 12 coil half-groups making six coil groups. At the same time the beginning 1 of a coil half-group is connected to the beginning 3, the beginning 2 - to the beginning 4, the beginning 5 - to the beginning 7, the beginning 6 - to the beginning 8, the beginning 9 - to the beginning 11, the beginning 10 - to the beginning 12, leads are taken from the end 1, from the end 4, from the end 5, from the end 8, from the end 9, from the end 12, from combined ends 2 and 3 of coil half-groups, from combined ends 6 and 7 of coil half-groups, from combined ends 10 and 11 of coil half-groups. |
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Bipolar winding of asynchronous machine Bipolar winding of asynchronous machine consists of twelve coil groups. The first three outputs of winding as per star circuit are formed from the beginning of the first coil group, from the beginning of the fifth coil group, from the beginning of the ninth coil group; the next three outputs of winding as per triangle circuit are formed from combined beginnings of the second, seventh and twelfth coil groups, from combined beginnings of the fourth, sixth and eleventh coil groups, from combined beginnings of the third, eighth and tenth coil groups; at that, end of the first coil group is connected to end of the seventh coil group; the end of the second coil group is connected to the end of the eighth coil group; the end of the fifth coil group is connected to end of the eleventh coil group; end of the sixth coil group is connected to end of the twelfth coil group; end of the ninth coil group is connected to the end of the third coil group; end of the tenth coil group is connected to end of the fourth coil group; at that, the first three outputs of winding as per star circuit and the other three outputs of winding as per triangle circuit are intended to be connected to network during motor operation, and during asynchronous generator operation the above mentioned first three outputs as per star circuit are connected to excitation capacitors; the next three outputs of winding as per triangle circuit are intended to be connected to generator load. |
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Autonomous induction generator with bipolar stator winding In autonomous induction generator with bipolar stator winding from 18 coil groups and capacitors of excitation, the winding leads are taken as follows: from the beginning 1 of coil group - lead 19, from the beginning 7 of coil group - lead 22, from the beginning 13 of coil group - lead 26, from combined beginnings 17, 3, 10 of coil groups - lead 21, from combined beginnings 5, 9, 16 of coil groups - lead 24, from combined beginnings 4, 11, 15 of coil groups - lead 25, from combined beginnings 2, 12 of coil groups - lead 20, from combined beginnings 8, 18 of coil groups - lead 23, from combined beginnings 6, 14 of coil groups - lead 27, at the same time end 1 of coil group is connected to end 10 of coil group, end 7 - to end 16, end 13 - to end 4, end 2 - to end 11, end 8 - to end 17, end 14 - to end 5, end 18 - to end 9, end 6 - to end 15, end 12 - to end 3 of coil group, excitation capacitors 31-32, 33-34, 35-36 at one side are connected to each other serially and by means of contacts 28, 29, 30 to leads 20, 23, 27 of stator winding, and at the other side capacitor 31 is connected to capacitor 36 and lead 21, capacitor 32 is connected to capacitor 33 and lead 24, capacitor 34 is connected to capacitor 35 and lead 25, contacts 28, 29 and 30 close as voltage reduces and open as voltage increases in compliance with the required mode of load supply. |
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Double-layer stator winding of bipolar induction generator Proposed double-layer stator winding of bipolar induction generator comprises 9 coil groups with leads: from the beginning 1 of coil group - lead 10, from the beginning 4 of coil group - lead 12, from the beginning 7 of coil group - lead 14, from combined end 1 and beginnings 9 and 2 of coil groups - lead 11, from combined end 4 and beginnings 3 and 5 of coil groups - lead 13, from combined end 7 and beginnings 6 and 8 of coil groups - lead 15, at the same time end 2 of coil group is connected to end 6 of coil group, end 5 of coil group - with end 9 of coil group, end 8 of coil group - to end 3 of coil group, excitation capacitors 16, 17, 18 are connected to outputs 10, 12, 14, and load - to outputs 11, 13, 15. |
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Electric machine, namely synchronous engine with standby stator windings Electric machine (1) includes stator (2) and rotor (5); at that, stator (2) has stator slots (8) in which there laid is stator winding (4) with standby and at least three-phase systems of windings (U1, V1, W1; U2, V2, W2). According to invention, electric machine (1) includes variety of poles with number of poles (PZ) of at least four, number (NZ) of stator slots (8), which corresponds to the product of the number of phases by the square of number of poles (PZ) of electric machine (1) or its integral multiple, as well as the number of systems of windings (U1, V1, W1;…; U4, V4, W4) corresponding to the number of poles (PZ). Every time the number of in-phase branches (U1 - U4, V1 - V4, W1 - W4), which corresponds to the number of poles (PZ), is combined into one phase group of branches (PU, PV, PW). Phase groups of branches (PU, PV, PW) are laid cyclically along phases and pole after pole in stator slots (8) of stator (2). There is area of slots (N1 - N4), which corresponds to the number of poles (PZ), for each pole and phase group of branches (PU, PV, PW). Slots are occupied so that in-phase branches (U1 - U4, V1 - V4, W1 - W4) are uniformly distributed according to their numbering along slot positions (N1, …, N4) of corresponding slot areas (N1 - N4). |
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Double-winding startor with m=3-phase 2p1=4·k- and 2р2=6·k- pole lap windings in z=144·k slots Invention relates to electrical engineering and electrical machine building and can be used in three-phase double-speed cage asynchronous motors. The double-winding stator of an asynchronous motor has m = 3 - phase, 2p1 = 4 k- and 2p2 = 6 k-pole lap windings in z =144 k slots, each of which is symmetrical with m' = 6 - zone of uniformly displaced windings, placed in slots in two layers. According to this invention, of the K = z windings with numbers from 1K to (z)K, the 2p1 - pole winding relates to K/2 windings with odd numbers 1K, 3K, …, (z-1)K, each containing wk1 turns and connected in 6p1 sub-groups of windings with q'1 = 6 neighbouring windings in each, and the 2p2 - pole winding relates to K/2 windings with even numbers 2K, 4K,…, (z)K, each containing wk1 turns and connected in 6p2 sub-groups of windings with q'2 = 4 neighbouring windings in each. All windings have slot pitch yk= 29, where k=1, 2; q'1 = z/12p1 and q'2 = z/12p2. |
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Double-winding startor with m=3-phase 2p1=12- and 2p2=14- pole lap windings in z=144 slots Invention relates to electrical engineering and electrical machine building and can be used in three-phase double-speed cage asynchronous motors. . Each of the 3-phase windings with 2p1=12- and 2p2=14-pole lap windings in z=144 slots of the double-winding stator of the asynchronous motor is symmetrical with m'=6-zone from uniformly displaced windings, placed in slots in two layers. According to this invention: of the K = z windings with numbers from 1K to (z)K, the 2p1 - pole winding relates to K/2 windings with odd numbers 1K, 3K, …, (z-1)K, each containing wk1 turns and connected in 6p1 sub-groups of windings with q'1 =2 neighbouring windings in each, and the 2p2 - pole winding relates to K/2 windings with even numbers 2K, 4K,…, (z)K, each containing wk2 turns and connected, when q'2=12/7, in 6p2 sub-groups with grouping of their windings in a series 2221221, repeated six times. All windings have slot pitch yk= 11, where q'1 = z/12p1 and q'2 = z/12p2. |
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Double-winding startor with m=3-phase 2p1=8·k- and 2p2=10·k-pole lap windings in z=90·k slots Invention relates to electrical engineering and electrical machine building and can be used in three-phase double-speed cage asynchronous motors. Each of the 3-phase windings with 2p1=8·k- and 2p2=10·k-pole lap windings in z=90 K slots of the double-winding stator of the asynchronous motor is symmetrical with m'=6-zone from uniformly displaced windings, placed in slots in two layers. Of the K = z windings with numbers from 1K to (z)K, the 2p1 - pole winding relates to K/2 windings with odd numbers 1K, 3K, …, (z-1)K, each containing wk1 turns and connected in 6p1 sub-groups of windings with q'1 = 15/8 with grouping of their windings in a series 22222221, repeated three times. The 2p2 - pole winding relates to K/2 windings with even numbers 2K, 4K,…, (z)K, each containing wk2 turns and connected, in 6p2 alternating two- and one sub-groups of windings. All windings have slot pitch yk= 9, where k=1, 2 when q'1 = z/12p1. |
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Double-winding startor with m=3-phase 2p1=10·k- and 2р2=12·k-pole lap windings in z=108·k slots Invention relates to electrical engineering and electrical machine building and can be used in three-phase double-speed cage asynchronous motors. Each of the 3-phase windings with 2p1=10·k- and 2p2=12·k-pole lap windings in z=108 K slots of the double-winding stator of the asynchronous motor is symmetrical with m'=6-zone from uniformly displaced windings, placed in slots in two layers. Of the K = z windings with numbers from 1K to (z)K, the 2p1 - pole winding relates to K/2 windings with odd numbers 1K, 3K, …, (z-1)K, each containing wk1 turns and connected in 6p1 sub-groups of windings with q'1 = 9/5 with grouping of their windings in a series 22221, repeated six times. The 2p2 - pole winding relates to K/2 windings with even numbers 2K, 4K,…, (z)K, each containing wk2 turns and connected, when q'2=3/2, in 6p2 alternating two- and one sub-groups of windings. All windings have slot pitch yk= 9, where k=1, 2 when q'1 = z/12p1 and q'2 = z/12p2. |
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Double-winding startor with m=3-phase 2p1=8·k- and 2р2=10·k-pole lap windings in z=120·k slots Invention relates to electrical engineering and electrical machine building and can be used in three-phase double-speed cage asynchronous motors. Each of the 3-phase windings with 2p1=8·k- and 2p2=10·k-pole lap windings in z=120 K slots of the double-winding stator of the asynchronous motor is symmetrical with m'=6-zone from uniformly displaced windings, placed in slots in two layers. Of the K = z windings with numbers from 1K to (z)K, the 2p1 - pole winding relates to K/2 windings with odd numbers 1K, 3K, …, (z-1)K, each containing wk1 turns and connected, when q1=5/2, in 6p1 alternating three- and two sub-groups of windings, and the 2p2-pole winding relates to K/2 windings with even numbers 2K, 4K, …, (z)K, each containing wk turns and connected in 6p2 sub-groups of windings with q'2=2 neighbouring windings in each. All windings have slot pitch yk= 15, where k=1, 2 when q'1 = z/12p1 and q'2 = z/12p2. |
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Double-winding stator with m=3-phase 2p1=10- and 2р2=14-pole lap windings in z=168 slots Invention relates to electrical engineering and electrical machine building and can be used in three-phase double-speed cage asynchronous motors. Each of the 3-phase windings with m=3-phase 2p1=10- and 2p2-14-pole lap windings in z=168 slots of the double-winding stator of the asynchronous motor is symmetrical with m'=6-zone from uniformly displaced windings, placed in slots in two layers. According to this invention: of the K = z windings with numbers from 1K to (z)K, the 2p1 - pole winding relates to K/2 windings with odd numbers 1K, 3K, …, (z-1)K, each containing wk1 turns and connected in 6p1 sub-groups of windings with q'1 = 14/5 with grouping of their windings in a series 33332, repeated six times, and the 2p2 - pole winding relates to K/2 windings with even numbers 2K, 4K,…, (z)K, each containing wk2 turns and connected in 6p2 sub-groups of windings with q'2=2 neighbouring windings in each. All windings have slot pitch yk= 13, where q'1 = z/12p1 and q'2 = z/12p2. |
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Double-winding startor with m=3-phase 2p1=10- and 2р2=12-pole lap windings in z=180 slots Invention relates to electrical engineering and electrical machine building and can be used in three-phase double-speed cage asynchronous motors. The double-winding stator of an asynchronous motor has m = 3 - phase, 2p1 = 10- and 2p2 = 12-pole lap windings, placed in z =180 slots, each of which is symmetrical with m' = 6 - zone of uniformly displaced windings, placed in slots in two layers. According to this invention, of the K = z windings with numbers from 1K to (z)K, the 2p1 - pole winding relates to K/2 windings with odd numbers 1K, 3K, …, (z-1)K, each containing wk1 turns and connected in 6p1 sub-groups of windings with q'1 = 3 neighbouring windings in each, and the 2p2 - pole winding relates to K/2 windings with even numbers 2K, 4K,…, (z)K, each containing wk2 turns and connected, when q'2 = 5/2, in 6p2 alternating three- and two sub-groups of windings. All windings have slot pitch yk= 15, where q'1 = z/12p1 and q'2 = z/12p2. |
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Three-phase rod-shaped wave-winding for electrical machine with even number q=z/6p≥4 Invention relates to electrical engineering and electric machine building and pertains to distinctive features of stators of three-phase asynchronous and synchronous electrical machines, as well as phase wound rotors of asynchronous motors. The proposed three-phase rod-shaped wave-winding for electrical machines with even number q=z/6p≥4 is made from uniformly distributed coils with number of turns wK=1 in each, connected in phases into one or two parallel branches. According to the first version of the invention, when q = 4, z = 24·p the coil contains 12 p turns with numbers 1K…(12·p)K with slot pitch yp = 11 with the beginning in the odd and the end in the even slot. Each of the turns 1K…12K is connected in series with (p - 1) others, displaced by 12 numbers, in 12 parts 1A, 2A, 3Z, 4Z, 5B, 6B, 7X, 8X, 9C, 10C, 11Y, 12Y, and in phase A parts A + 2A are connected in series into one and 7X + 8X into the other branch with their connection in series or in parallel using jumpers with antiparallel connection of branch 7X + 8X with respect to 1A + 2A. The other two phases B and C are connected likewise from parts 5B + 6B, 11Y + 12Y in phase B and 9C + 10C, 3Z + 4Z in phase C with phase onset from the beginning 1K, 5K, 9K. In the second version when q = 6, z = 36·p the coil contains 18·p turns with numbers 1K…(18·p)K with slot pitch yp= 15 with the beginning in the odd and the end in the even slot. Each of the turns 1K…18K is connected in series with (p - 1) others, displaced by 18 numbers, in 18 parts 1A, 2A, 3A, 4Z, 5Z, 6Z, 7B, 8B, 9B, 10X, 11X, 12X, 13C, 14C, 15C, 16Y, 17Y, 18Y, and in phase A parts 1A+2A+3A are connected into one and 10X+11X+12X into the other branch with their connection in series or in parallel using jumpers with antiparallel connection of branch 10X + 11X + 12X with respect to 1A + 2A + 3A. The other two phases B and C are connected likewise from parts 7B + 8B + 9B, 16Y + 17Y + 18Y in phase B and 13C+14C+15C and 4Z+5Z+6Z in phase C with phase onset from the beginning 1K, 7K, 13K. In the third version when q = 8, z = 48·p the coil contains 24·p turns with numbers 1K…(24·p)K with slot pitch yp= 19 with the beginning in the odd and the end in the even slot. Each of the turns 1K…24K is connected in series with (p - 1) others, displaced by 24 numbers, in 24 parts 1A, 2A, 3A, 4A, 5Z, 6Z, 7Z, 8Z, 9B, 10B, 11B, 12B, 13X, 14X, 15X, 16X, 17C, 18C, 19C, 20C, 21Y 22Y, 23Y, 24Y, and in phase A parts 1A + 2A + 3A + 4A are connected into one and 13X + 14X + 15X + 16X into the other branch with their connection in series or in parallel using jumpers with antiparallel connection of branch 13X + 14X + 15X + 16X with respect to 1A + 2A + 3A + 4A. The other two phases B and C are connected likewise from parts 9B + 10B + 11B + 12B and 21Y + 22Y + 23Y +24Y in B, 17C + 18C + 19C + 20C in B and 17C + 18C + 19C + 20C and 5Z + 6Z + 7Z + 8Z in C with phase onset from the beginning 1K, 9KD, 7K. In all versions the phases of the coils are conjugated into a star (Y) or triangle (Δ) with values p= 1, 2, 3, …. |
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Invention refers to electric drives of machineries of various purpose. Device consists of asynchronous electric motor with squirrel-cage rotor, traction sheave and brake system. Asynchronous electric motor is made with electric reduction that is formed by the fact that stator winding consists of "i" separate two-layered windings designed for overall supply voltage, and galvanic unconnected and isolated from each other, and each of them occupies "1/i" part of stator circle. External sides of sections of each winding, which comprise its extreme poles, are put together with external sides of sections of neighbouring windings into common stator slots. Poles of neighbouring windings at the joint of windings are of opposite sign. At that, i - integral number not less than 2. |
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Double-winding stator with c m=3-phase 2p1=14- and 2p2=16-pole lap windings in z=168 slots Present invention relates to electrical engineering specific features of designing stators with two three-phase windings, meant for double-speed asynchronous cage motors. The essence of the invention lies in that, for the double winding stator with m=3 phase 2p1=14·k and 2p2=16 k-pole lap windings in z=168·k slots, each of which is made symmetrical with an m=6-zone from equally spaced coils, put into slots in two layers. According to this invention: from K=z coils with numbers from 1K to (z)K, the 2p1 pole winding relates to K/2 coils with odd numbers 1K, 3K,…, (z-1)K, containing wk1 turns and connected into 6p1 coil semi-groups with q'1=2 neighbouring coils in each. The 2p2 pole winding relates to K/2 coils with even numbers 2K, 4K,…, (z)K, containing wk2 turns and connected into 6p2 coil semi-groups given q'2=7/4, with grouping their coils in a 2 2 2 1 row, which repeats twelve times. All coils have spacing in the slots equal to yk=11, where q'1=z/12p1 and q'2=z/12p2. |
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Double-winding stator with c m=3-phase 2p1=4·k- and 2р2=6·k-pole lap windings in z=72·k slots Present invention relates to electrical engineering specific features of designing stators with two three-phase windings, meant for double-speed asynchronous cage motors. The essence of the invention lies in that, for the double winding stator with m=3 phase 2p1=14·k and 2p2=6 k-pole lap windings in z=72·k slots, each of which is made symmetrical with an m=6-zone from equally spaced coils, put into slots in two layers. According to this invention: from K=z coils with numbers from 1K to (z)K, the 2p1 pole winding relates to K/2 coils with odd numbers 1K, 3K,…, (z-1)K, containing wk1 turns and connected into 6p1 coil semi-groups with q'1=3 neighbouring coils in each. The 2p2 pole winding relates to K/2 coils with even numbers 2K, 4K,…, (z)K, containing wk2 turns and connected into 6p2 coil semi-groups with q'2=2 neighbouring coils in each. All coils have uneven spacing in the slots, equal to yk=13, or yk=15, where k=1, 2, 3 given q'1=z/12p1 and q'2=z/12p2. |
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Invention relates to electrical engineering and may be used for production of multi-speed induction motors. The stator winding consists of 18 winding groups with their phases being connected against Y-Δ/Δ diagram, when the end (1) of winding group is connected to the start (10) of the winding group, end (3) with start (12), end (5) - with start (14), end (7) - with start (16), end (9) - with start (18), end (11) with start (2), end (13) - with start (4), end (15) - with start (6), end (17) - with start (8). Separately the ends (2), (4), (6) of winding groups are combined together, as well as the ends (8, 10, 12) of winding groups, the ends (14, 16, 18) of winding groups. The terminals are taken from the starts (1, 7) and (13) of winding groups from the combined start (3) and (5), from combined start (9) and (11) and from the combined start (14) and (17) of winding groups. |
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Three-phase two-layer electric machine winding in z=186·c slots with 2p=22·c and 2p=26·c poles Application: electric machine industry. The task consists in lowering the differential leakage factor σd of symmetrical m'=3-zone electric machine fractional (q=62/11 and q=62/13) loop winding. To do this three-phase two-layer electric machine winding in z=186-c slots is made of 3p·c coil groups. 1) with 2p=22·c poles with number of slots per pole and phase q=62/11 and grouping 66566566565: in the first grouping "1 Г...11 Г" the coils have slot pitch y"п"i=13-2(i-1) for groups of six- and y'"п"i =12-2(i'-1) five-coil with (1-x)wk turns of coils i=1, 6 and (1+x)wk of coils i=i'=3 with wk turns in the rest coils in groups and value of x=0,58; 2) with 2p=26·c poles with slot number per pole and phase q=62/13 and grouping 5555455545554: in the first grouping "1 Г...13 Г" five-coil groups have slot pitch y"п"i =11-2(i-1)·c (1-x)wK by turns of coils i =5 for "1Г", "4Г", "6Г", "8Г", "10Г", "12Г", (1-x)wk in i=1 and (1+x) wk in i=3 for "7Г", "11Г", y"п"=7·c (1+x)wK in i=3 for "2Г", "3Г" with (1-x)wk in i=1 for "2Г" and in i=5 for "3Г", and four-coil - y'"п"i =10-2(i'-1) with (1+x)wk by turns in i'=2, 3 with wk turns in the rest coils of groups when x=0.49. Such distributions of nonequalturn-coils repeat in each consequent grouping where c=1, 2, 3; i and I' - coil sequential numbers in groups; 2wK - number of turns in slots fully filled with winding. |
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Three-phase double-layer electric machine winding in grooves z=225 at 2p=56 poles (g=75/28) Three-phase double-layer electric machine winding in grooves z=225 at 2p=56 poles with groove number per pole and phase q=z/3p=75/28 is produced from 3p=84 coil groups with numbers 1G...84G and coil grouping by series 3332332332332332332332332332, triply repeated. Concentric coils have groove steps ygi=6, 4, 2 with turn numbers (1-x)wk, (1+x)wk, (1-x)wk for three-coil groups and ygi=5, 3 with (1+x)wk, (1+x)wk for two-coil, where 2wk is number of groove turns completely filled with winding at optimum value x=0.39. |
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Electric machine three-phase double-layer winding at 2p=16·c poles in z=3(8·b+5) ·c slots Winding incorporates 2p=16·c poles made up of 3p·c coil groups with the numbers from 1"Г" to 24"Г"·c in z=3(8·b+5)·c=63·c slots, or in z=87·c, or in z=111·c slots at b = 2, 3, 4 and with the number of the slots per a pole and phase q=z/3p=21/8, or q=29/8, or q=37/8. In compliance with the first version, the winding is made in z=63·c slots with q=21/8 and the coil group 3 3 2 3 3 2 3 2 in the series repeated 3·c times. Note, that in the first group 3"Г"...8"Г", the three-coil windings feature the coil pitch over the slots ysi=6, 4, 2 and are made with (1-x)wc, (1+x)wc, (1-x)wc turns while the two-coil groups feature the coil pitch over the slots y'si=5, 3 are furnished with wc, (1+x)wc turns at x=0.56. In compliance with the second version, the winding is laid in z=87·c slots with q = 29/8 and the coil group 4 4 3 4 4 3 4 3 in the series repeated 3·c times. Note that in the first group 1"Г"...8"Г", the four-coil windings feature the coil pitch over the slots ysi=8, 6, 4, 2 and are made with (1-x)wc, (1+x)wc, wc, (1-x)wc turns while the three-coil windings feature the coil pitch over the slots y'si=7, 5, 3 are made with wc, (1+x)wc, wc turns at x = 0.58. In compliance with the third version, the winding is made in z=111·c slots with q = 37/8 and the coil group 5 5 4 5 5 4 5 4 in the series repeated 3·c times. Note that in the first group 1"Г"...8"Г", the five-coil windings feature the coil pitch over the slots ysi=11, 9, 7, 5, 3 and are made with (1-x)wc, wc, (1+x)wc, wc, (1-x)wc turns, while the four-coil groups feature the coil pitch y'si = 10, 8, 6, 4 and are made with wc, wc, (1+x)wc, wc turns at x = 0.57. The aforesaid distributions of coils with unequal number of turns are repeated in every following group, where c=1, 2, 3...; 2wc is a number of slots filled completely with the winding. |
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Electric machine three-phase double-layer winding in z=177·c slots at 2p=22·c and 2p= 26·c poles Invention relates to electrical engineering and aims at reducing differential dissipation factor σd of the electric machine symmetric divided loop with m'=3-section furnished with (q=59/11 and q=59/13). The invention novelty consists in that the aforesaid winding is made in z=177·c slots at 2p=22·c poles with the number of slots per a pole and phase q=59/11 up of 3p·c coil groups with the numbers 1"Г"...33"Г"·c and the coil group in the series 6 5 6 5 5 6 5 5 6 5 5 repeated 3·c times. Note, that in compliance with the first version, in the first group 1"Г"...11"Г", the group coils feature the pitch over the slots y=13-2 (i-1) four six-coil groups and y'=12-2 (i'-1) for five-coil groups with the number of turns as follows, i.e. (1-x)wc in coils i=1, 6; (1+x)wc in coils i'=3 and wc turns in the remaining coil groups at x=0.38. In compliance with the second version, the proposed winding is made in z=177·c slots at 2p=26·c poles with the number of clots per a phase and pole q=59/13 from 3p·c coil groups with the numbers 1"Г"...39"Г"·c and the coil group in the series 5 5 4 5 4 5 4 5 4 5 4 5 4, repeated 3·c times. Note that in the first group 1"Г"...13"Г", the group coils feature the pitch over slots y=11-2(i-1) for five-coil groups and y'=10-2(i'-1) for four-coil groups with the number of turns as follows, i.e. for four-coil groups with the number of turns (1-x)w in coils i=1, 5; (1+x)wc in coils i=i'=3 and w turns in the remaining coil groups at x=0.55. The aforesaid distributions of coils with unequal number of turns are repeated in every following group, where c=1, 2, 3...; 2wc is a number of slots filled completely with the winding. |
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Electric machine three-phase double-layer winding at 2p=26·c poles in z=96·c and z=99·c slots Invention relates to electrical engineering and aims at reducing differential dissipation factor σd of the electric machine symmetric divided loop with m'=3-section (q=32/13 and q=33/13). The invention novelty consists in the following. The winding at 2p=26c poles made up of 3p·c coil groups with the numbers from 1"Г" to 39"Г"·c is configured as follows, i.e. 1) in z=96 c slots with the number of slots per a phase and pole q=32/13 and the coil group in the series 3232323232322, the first group 1"Г"...13"Г" has the three-coil groups with coil pitch over slots ysi= 6, 4, 2 with the number of turns (1-x) wc, wc, (1-x) wc in 1"Г", 11"Г" and (1-x) wc, (1+x)wc, (1-x)wc in 3"Г", 5"Г", 7"Г", 9"Г", while the two-coil windings have y'si=5, 3 with wc, (1+x) wc turns at x=0.44, 2) in z=99c slots with the number of slots per a phase or pole q=33/13 and the coil group in the series 3323232323232, i.e. in the first group 1"Г"...13"Г", the three-coil windings feature the coil pitch over the slots ysi= 6, 4, 2 with the number of turns (1-x) wc, (1+x) wc, (1-x) wc turns and the two-coil windings feature y'si=5, 3 with wc, (1+x)wc turns at x=0.55. The aforesaid distributions of coils with unequal number of turns are repeated in every following group, where c=1, 2, 3...; 2wc is a number of slots filled completely with the winding. |
Another patent 2551142.