Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K3/00—Details of windings
  • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
  • H02K3/28—Layout of windings or of connections between windings
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
  • H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
  • H02K15/0414—Windings consisting of separate elements, e.g. bars, hairpins, segments, half coils
  • H02K15/0421—Windings consisting of separate elements, e.g. bars, hairpins, segments, half coils consisting of single conductors, e.g. hairpins
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
  • H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
  • H02K15/0435—Wound windings
  • H02K15/0464—Lap windings
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
  • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
  • H02K2213/12—Machines characterised by the modularity of some components

Definitions

• the present invention relates to a winding method used in electrical machines, which is obtained by various cutting and bending processes of an electrically conductive sheet in the form of a U or V shape, using planar cutting tools such as a water jet, laser etc.
• Electrical machines consist of two different parts, namely rotor and stator.
• the force that causes rotation in electrical machines is obtained as a result of the interaction of the magnetic field created by the rotor and the stator.
• the rotor or stator needs current carrying electrical machine windings in order to create magnetic field.
• electrical machine windings consist of conductive stranded wires. These wires are covered with an insulating material called enamel to provide electrical insulation. The cross-sectional area of the wires used is determined based on the required current ratings.
• wire thicknesses are standardized according to the American Wiring Gauge (American Wiring Gauge, AWG) system. Electrical machine windings are wound inside a slot or wound as air- cored depending on the type of topology.
• Parameters such as wire thickness or number of turns are determined depending on the parameters such as voltage, current or the number of phases.
• the first problem is the cost of the electrical machine windings and difficulty of winding. Wires used in the electrical machine windings are placed on the rotor or stator by motor winding machines. These machines are expensive and investment is needed. In addition, the price of the enameled wires is increasing day by day.
• a second problem faced is related to the current requirement of the electrical machines. In electrical machines, the current rating and the force causing the rotation are related to each other. Today, especially with the developments in the automotive and energy industries, electrical machines with high current ratings are required. For example, in wind turbine or electric vehicle applications, electrical machines with high current ratings are at the forefront.
• the main object of the invention is to reduce the cost of the electrical machine windings and to provide ease of production.
• the electrical machine windings are made by cutting pieces from an electrically conductive and bendable sheet. Therefore, there is no need for any winding machine and thus ease of production is provided. The cost is also reduced since instead of the stranded wires, the aforementioned invention will be used in the electrical machine windings.
• Another object of the invention is to meet high current ratings, which is an increasing need of the electrical machines. Since the electrical machine winding of the invention can operate at high currents, the need for paralleling or using thick wires to obtain high currents is eliminated.
• Another object of the invention is to increase the efficiency of electrical machines. Since the end winding length of the electrical machine winding of the invention is shorter than the end winding length of the windings used in conventional electrical machines, the efficiency of the electrical machine increases.
• Figure-1 The figure representing the production of the electrical machine winding of the invention from the electrically conductive bendable sheet.
• Figure-2 The figure representing the electrical machine winding of the invention where said winding has been cut from an electrically conductive and bendable sheet and is ready for the bending process.
• Figure-3 Front view of the electrical machine winding of the invention.
• Figure-4 Front view of the configuration representing the multiple electrical machine winding obtained by using a number of electrical machine windings of the invention.
• This invention is related to an electrical machine winding (9), which is one of the basic components of electrical machines. Contrary to the electrical machine winding consisting of stranded wires found in conventional electrical machines, the electrical machine winding (9) of the invention is produced from a thin electrically conductive bendable sheet (1). First of all, the material which has a small thickness (2) of thin electrically conductive bendable sheet is cut in a U or V shape with planar cutting tools such as laser or water jet etc. as seen on the cutting lines (3). The electrical machine winding (9) of the invention is obtained by bending the unbent electrical machine winding (4), which is obtained after cutting, with various bending tools at the lower bending point (5), middle bending point (6) and upper bending point (7) shown in Figure 2.
• the width (8) of the electrical machine winding is determined with respect to the current rating requirement of the electrical machine.
• the Fower bending angle (10), middle bending angle (11) and upper bending angle (12) take different values based on the pole number of the electrical machine.
• the decrease in efficiency caused by the long end windings of the conventional electrical machines has been eliminated since the electrical machine winding (9) of the invention has a shorter end winding (13), thus providing higher efficiency.
• multiple electrical machine windings (14) shown in Figure 4 are obtained by combining a plurality of electrical machine windings (9) around a circle. When a current is flowed over this multiple electrical machine winding (14), the magnetic field required for electrical machines to generate torque is created.
• the electrical connection of the multiple electrical machine winding (14) to the outside of the electrical machine is achieved via the winding terminals (15).
• the number of winding terminals (15) may increase depending on electrical machine topology (single phase, two phases, three phases, four phases, five phases etc.).
• Electrical insulating material (16) is used on the multiple electrical machine winding (14) to electrically isolate the two adjacent electrical machine windings (9).
• End winding connector (17) is used to connect the electrical machine windings (9) from the end windings (13) to each other. This element creates the current path by electrically connecting the electrical machine windings to each other.
• the electrical machine windings (9) can be connected with the end winding connectors (17) in various combinations depending on the requirements of the electrical machine, such as the number of turns of the winding or the phase number.
• the electrical machine industry has become a market, whose growth is accelerating. Electrical machines have gained importance due to the rapid growth of the electric vehicles or renewable energy industry, such as wind energy. Participants in the industry are conducting research on electrical machines. Due to the competition environment that has occurred, it is very important to reduce the production time and the cost of the electrical machines as well as to increase their efficiency. In this context, the electrical machine winding of the invention reduces the cost by providing ease of production with the help of developing automation systems. Meanwhile, the invention of interest can satisfy high current demands without an increase in costs. Therefore, the configuration of the invention can be preferred in order to increase the efficiency and to provide the ease of production in all areas where electrical machines are used including the energy industry and the automotive industry. In addition, it is of particular importance to introduce the invention of interest to the industry in terms of reducing international dependency, which is one of our highly valued policies in recent years, and developing domestic and national technologies that our country needs.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Manufacture Of Motors, Generators (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=76329034

Family Applications (1)

Country Status (2)

Family Cites Families (7)

• 2020
  • 2020-12-07 EP EP20900147.8A patent/EP4055698A4/de not_active Withdrawn
  • 2020-12-07 WO PCT/TR2020/051239 patent/WO2021118500A1/en unknown

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