WO2015086311A1 - Générateur électrique et moteur électrique - Google Patents

Générateur électrique et moteur électrique Download PDF

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Publication number
WO2015086311A1
WO2015086311A1 PCT/EP2014/075553 EP2014075553W WO2015086311A1 WO 2015086311 A1 WO2015086311 A1 WO 2015086311A1 EP 2014075553 W EP2014075553 W EP 2014075553W WO 2015086311 A1 WO2015086311 A1 WO 2015086311A1
Authority
WO
WIPO (PCT)
Prior art keywords
winding
strands
rotor
stator
sub
Prior art date
Application number
PCT/EP2014/075553
Other languages
German (de)
English (en)
Inventor
Norbert Jeschke
Original Assignee
ROLLER, Maja
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ROLLER, Maja filed Critical ROLLER, Maja
Publication of WO2015086311A1 publication Critical patent/WO2015086311A1/fr

Links

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
    • H02K19/00—Synchronous motors or generators
    • H02K19/16—Synchronous generators
    • H02K19/34—Generators with two or more outputs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/48—Generators with two or more outputs

Definitions

  • Electric generator as well as electric motor
  • the invention relates to an electric generator, in particular for a wind or hydroelectric power plant according to the preamble of patent claim 1.
  • the invention furthermore relates to an electric motor according to the preamble of patent claim 9.
  • An electric generator is an electric machine that converts kinetic energy or mechanical energy into electrical energy.
  • the electric generator is technically the counterpart to an electric motor, which conversely converts electrical energy into motive or mechanical energy.
  • Electrical machines namely generators and motors have been known for a long time. They consist in principle of a fixed part, the stator and a rotating part, the rotor which is rotatably arranged in or around the stator.
  • the stator is regularly formed from a laminated core and provided for each phase with a winding strand whose windings are distributed in a plurality of grooves arranged in the laminated core, whereby an array of pole pieces is formed.
  • the rotor is provided opposite the windings with permanent magnets or direct current exciters (electromagnets).
  • the invention aims to remedy this situation.
  • the invention has for its object to provide an electric generator whose efficiency is increased.
  • this object is achieved in that each winding strand is separated into several sub-strands, each winding sub-strand is connected to an output, which outputs are connected in series.
  • the outputs are preferably each with a
  • Rectifier connected, which rectifiers are connected in series. The interposition of a rectifier at each sub-string galvanic isolation of the sub-strands is effected.
  • an electric generator is provided whose efficiency is increased.
  • the coil formed by the winding strand is divided into a plurality of sub-windings with a short wire length, each of which has only a low ohmic resistance.
  • the rectifiers are connected in series, which adds up the individual currents as well as the individual voltages of the individual taps.
  • the laminated core is preferably made of as pure as possible iron produced. It has been shown that too many foreign substances in the sheet material significantly affect the achievable performance negatively.
  • laminated core Any sheet metal arrangement for forming pole piece arrangements is to be subsumed below as “laminated core.”
  • a “laminated core” can consequently be formed from one or more metal sheets.
  • Under a “in the laminated core arranged groove” is any by at least one,
  • pole pieces in particular to be understood by two pole shoes limited recess, wherein the pole pieces can also be formed as separate parts and in particular can be releasably connected to a sheet metal of the Bleckpers.
  • each winding strand is divided into so many winding sub-strands that each winding sub-strand is wound exactly through two grooves.
  • particularly many, short winding sub-strands are formed, each having a very low ohmic resistance, whereby the overall performance is maximized.
  • three phases are arranged, whose winding strands are each separated into a plurality of winding sub-strands, wherein in each case a winding sub-string of each winding strand is connected to a rectifier, which rectifiers are connected in series.
  • the series-connected rectifiers can then be connected to one or more power inverters, to which the resulting total voltage and the resulting total current are applied.
  • the arrangement of pole shoes by individual, especially hammerstiel-shaped pole pieces (27) is formed, which are in particular releasably connected to the laminated core and between which the grooves (22) are formed.
  • Such a trained generator can be arranged for example in a wind or hydroelectric power plant, wherein the rotor is mechanically driven via a provided with a vane or blade assembly shaft.
  • the present invention is further based on the object to provide an electric motor whose efficiency is increased. According to the invention, this object is solved by the features of the characterizing part of claim 9.
  • each winding strand is separated into several sub-strands, each winding sub-strand is connected to a voltage source, power losses are avoided, since each individual Wicklungssteil- strand has only a small length and thus a low ohmic resistance.
  • each winding strand is divided into so many winding sub-strands that each winding sub-strand is wound exactly through two grooves.
  • particularly many individual windings are formed with a very low ohmic resistance, which are each connected to a voltage source.
  • the total power loss is thereby further reduced.
  • three phases are arranged whose winding strands are each separated into a plurality of winding sub-strands, wherein in each case one winding sub-strands of each winding strands is connected to a corresponding phase of a three-phase voltage source.
  • An electric motor of the aforementioned type can be arranged for example in a motor vehicle and operated via an accumulator. It is the accumulator preferably connected to a generator of the aforementioned type, wherein the rotor of the generator is connected to an internal combustion engine via which it is drivable.
  • Figure 1 is a schematic representation of a generator in longitudinal section;
  • Figure 2 is the schematic representation of the generator of Figure 1 in
  • Figure 3 is a schematic representation of the associated with rectifiers taps of the winding sub-strands of the winding strands of the generator of Figure 1 and
  • FIG. 4 shows the schematic illustration of the voltage supply of individual winding partial strands of the winding strands of an electric motor.
  • the electric generator 1 selected as an exemplary embodiment essentially consists of a fixed stator 2 and a rotor 3, which is arranged rotatable about the central axis of the stator 2 relative thereto.
  • the stator 2 is formed from a base plate 21, on which a plate 23 provided with grooves laminated core 22 is arranged fixed in position.
  • winding sub-strands 24, 25, 26 of three each phase assigned winding strands distributed so that each winding sub-strand 24, 25, 26 is wound exactly by two grooves 23, whereby an array of pole pieces 27 is formed.
  • the winding sub-strands 24, 25, 26 of the winding strands of the three phases are in each case arranged offset to one another. net and connected to a rectifier 5.
  • the rectifier 5, which are each connected to three winding strands 24, 25, 26, are connected in series with a grid inverter 6, via which a feed into a power grid 7 takes place.
  • the interconnection of the winding sub-strings 24, 25, 26 with the rectifiers 5 and the power inverter 6 is shown schematically in FIG.
  • a shaft 3 is rotatably arranged via a bearing 23.
  • the shaft 3 is provided with a support plate 32 for receiving the rotor 3. Furthermore, the shaft 3 is provided with a support tube 33 for connection to the wing cage of a vertical wind wheel, via which the shaft 3 can be driven.
  • the rotor 4 is sleeve-like, with a circular cover plate 41 which is circumferentially provided with an edge 42. On its inside, the edge 42 is circumferentially provided with permanent magnets 43, which are arranged opposite the pole shoes 27 of the stator 2.
  • the cover plate 41 of the rotor 4 is arranged on the support plate 32 of the shaft 3 and screwed thereto by screws 34.
  • FIG. 4 schematically shows the operation of the electric machine according to the invention as an electric motor.
  • the electric motor is constructed substantially identical to the electric generator described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

L'invention concerne un générateur électrique, destiné en particulier à une turbine éolienne ou hydraulique, comprenant un rotor équipé d'aimants permanents ou de bobinages d'excitation à courant continu et disposé à rotation dans un ou autour d'un stator constitué d'un noyau feuilleté, le stator étant pourvu pour chaque phase d'un faisceau d'enroulements dont les enroulements sont répartis dans plusieurs gorges ménagées dans le noyau feuilleté du stator de façon à former un ensemble de pièces polaires et le rotor étant pourvu d'aimants permanents ou d'excitateurs à courant continu, chaque faisceau d'enroulements (24, 25, 26) étant divisé en plusieurs faisceaux d'enroulements partiels, chaque faisceau d'enroulements partiel (24, 25, 26) étant relié à une sortie, lesquelles sorties sont reliées en série. L'invention concerne en outre un moteur électrique de configuration correspondante.
PCT/EP2014/075553 2013-12-11 2014-11-25 Générateur électrique et moteur électrique WO2015086311A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP13196630.1 2013-12-11
EP13196630 2013-12-11

Publications (1)

Publication Number Publication Date
WO2015086311A1 true WO2015086311A1 (fr) 2015-06-18

Family

ID=49753059

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/075553 WO2015086311A1 (fr) 2013-12-11 2014-11-25 Générateur électrique et moteur électrique

Country Status (1)

Country Link
WO (1) WO2015086311A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016202408A1 (fr) * 2015-06-19 2016-12-22 Roller, Hermann Éolienne ou installation hydroélectrique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2096732A1 (fr) * 2008-02-27 2009-09-02 ABB Schweiz AG Système d'énergie comprenant une éolienne ou une turbine hydraulique
DE102011003940A1 (de) * 2011-02-10 2012-08-16 Robert Bosch Gmbh System mit einer elektrisch erregten Maschine
DE112010002781T5 (de) * 2009-06-30 2012-10-11 Teco-Westinghouse Motor Company Leistungskonverter zur verwendung mit einem windgenerator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2096732A1 (fr) * 2008-02-27 2009-09-02 ABB Schweiz AG Système d'énergie comprenant une éolienne ou une turbine hydraulique
DE112010002781T5 (de) * 2009-06-30 2012-10-11 Teco-Westinghouse Motor Company Leistungskonverter zur verwendung mit einem windgenerator
DE102011003940A1 (de) * 2011-02-10 2012-08-16 Robert Bosch Gmbh System mit einer elektrisch erregten Maschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016202408A1 (fr) * 2015-06-19 2016-12-22 Roller, Hermann Éolienne ou installation hydroélectrique

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