EP1886399A1 - Generateur pentaphase - Google Patents

Generateur pentaphase

Info

Publication number
EP1886399A1
EP1886399A1 EP06755278A EP06755278A EP1886399A1 EP 1886399 A1 EP1886399 A1 EP 1886399A1 EP 06755278 A EP06755278 A EP 06755278A EP 06755278 A EP06755278 A EP 06755278A EP 1886399 A1 EP1886399 A1 EP 1886399A1
Authority
EP
European Patent Office
Prior art keywords
generator
stator
winding
strands
groove
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP06755278A
Other languages
German (de)
English (en)
Inventor
Norbert Pfitzke
Gert Wolf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1886399A1 publication Critical patent/EP1886399A1/fr
Ceased legal-status Critical Current

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

Definitions

  • the invention relates to a five-phase electric generator, in particular for a motor vehicle, with five electrical strands for five different phases, wherein phases are electrically interconnected at Verschaltungsten.
  • Electric generators are known from the prior art.
  • the development has focused on single-, three- and six-phase generators.
  • Six-phase generators are used in particular where, compared with single-phase and three-phase generators, improved magnetic noise behavior and lower voltage ripple are required.
  • six-phase generators are considerably more expensive to manufacture.
  • a five-phase generator it is provided that the electrical angle at the Verschaltungsticianen between see 25 ° and 36 °. This results in a significant reduction of the magnetic noise behavior compared to three-phase generators, in particular, approximately or actually the magnetic noise behavior of a six-phase generator can be achieved. However, constructive relief arises in many respects. Thus, in a drive circuit of the generator according to the invention two diodes can be saved compared to a six-phase generator. Furthermore, a simpler interconnection is given, since now only five phases with ten terminals instead of six phases with twelve terminals must be executed. Overall, there is also a generator with increased robustness. This is partly due to the fact that the required number of slots decreases.
  • the electrical angle is between 31 ° and 36 °, in particular between 34 ° and 36 °, preferably approximately 36 °. While an improved magnetic noise behavior can be observed even with smaller electrical angles, especially in comparison with three-phase generators, an improvement in the measurement results was found for the mentioned electrical angles. According to the Applicant's knowledge, a minimal noise seems to occur at about 36 ° or as exactly as possible 36 °, although the advantages of the invention are also evident at smaller angles.
  • an interconnection of stator outgoing wires is realized on a winding overhang of the generator.
  • the generator is connected to a rectifier, in particular a B10 rectifier.
  • a rectifier in particular a B10 rectifier.
  • B10 means that it is a bridge rectifier with ten half-bridges (ie five bridge branches), and a rectifier of this kind is particularly suitable for the proposed generator.
  • stator outlet wires is realized within a circuit board, which is assigned to a rectifier. This also makes it possible to simplify the production further, because then only five connections are required on the stator of the generator and no longer ten connections.
  • stator winding of the generator of a continuous conductor per phase in particular - A -
  • a copper fill factor of a stator of the generator is greater than or equal to 50%.
  • the copper fill factor is understood to be the conductor fill factor of the stator slots, that is to say the ratio of the sum of all copper cross sections of the conductors lying in a slot to the overall cross section of the slot. If the copper fill factor greater than or equal to 50% is selected, this results in a particularly good efficiency of the generator.
  • a design of the generator in particular according to the following Figure 1, for a voltage level of 14V, per groove of a stator of the generator five to eleven electrical conductors, in particular eight conductors inserted.
  • the design in terms of the number of conductors is always associated with the consideration to achieve a high power output in the low speed range (higher number of conductors) and a high power output in the high speed range (lower number of conductors).
  • An optimization of the number of conductors is regularly associated with considerable effort.
  • the Applicant has recognized that the range proposed for the number of conductors is advantageous.
  • partial strands of the winding strands are additionally connected to one another at connection points. This can be advantageous for the characteristics of the generator and / or for the construction of the generator.
  • a stator winding of the generator to a Sehnung should be understood to mean that at least partial strands of the generator are inserted at least partially into other grooves than is the case with a conventional stator winding, that is, in particular into the next adjacent or laterally adjacent slots.
  • the documents DE 103 47 486 and WO 2005/034308 are expressly included in the disclosure content of this application.
  • the chord for the proposed five-phase generator means that, for example, the grooving step, which usually takes place from groove 1 to groove 6, now occurs at least once within a total strand by a different number of steps, ie, for example, groove 5 or groove 7 instead of groove 6 , is replaced. It improves the magnetic noise behavior.
  • the strands of the generator each have at least two sub-strands, which are interconnected in each case at the Verschaltungsten and the sub-strands individually wound and switched together on a winding head or a wiring plate.
  • a total interconnection of the generator is performed in star connection.
  • FIG. 2 shows a five-phase generator according to a first exemplary embodiment
  • FIG. 3 shows a representation of the phase wires and their layers in the slots according to the first exemplary embodiment
  • FIG. 4 shows a five-phase generator according to a second exemplary embodiment
  • FIG. 5 shows a five-phase generator according to a third exemplary embodiment
  • FIG. 6 shows a representation of the phase wires and their layers in the slots according to the third exemplary embodiment
  • Figure 7 is a sectional view through the stator and winding head showing the interconnection of two strands on the winding head.
  • FIG. 1 shows a longitudinal section through an electric machine 10, here in the embodiment as a generator or alternator for motor vehicles.
  • This electrical machine 10 has, inter alia, a two-part housing 13, which consists of a first bearing plate 13.1 and a second bearing plate 13.2.
  • the bearing plate 13.1 and the bearing plate 13.2 receive in themselves a so-called stator 16, which consists on the one hand of a substantially circular ring-shaped stator iron 17, and in the radially inwardly directed, axially extending grooves, a stator winding 19 is inserted.
  • This annular stator 16 surrounds with its radially inwardly directed grooved surface a rotor 20 which is formed as a claw-pole rotor.
  • the rotor 20 consists, inter alia, of two claw-pole plates 22 and 23, on whose outer circumference in each case axially extending claw-pole fingers 24 and 25 are arranged. Both claw-pole boards 22 and 23 are arranged in the rotor 20 such that their claw-pole fingers 24 and 25, which extend in the axial direction, mutually change on the circumference of the rotor 20. This results in magnetically required spaces between the oppositely magnetized claw pole fingers 24 and 25, which are referred to as Klauenpol formatschreib.
  • the rotor 20 is connected by means of a shaft 27 and one each on a rotor side. te located rolling bearings 28 rotatably mounted in the respective end shields 13.1 and 13.2.
  • the rotor 20 has a total of two axial end faces, on each of which a fan 30 is attached.
  • This fan 30 consists essentially of a plate-shaped or disc-shaped portion, emanating from the fan blades in a known manner.
  • These fans 30 serve to allow an air exchange between the outside of the e-lektrischen machine 10 and the interior of the electric machine 10 via openings 40 in the end shields 13.1 and 13.2.
  • the openings 40 are provided substantially at the axial ends of the bearing plates 13.1 and 13.2, via which cooling air is sucked into the interior of the electric machine 10 by means of the fan 30.
  • This cooling air is accelerated by the rotation of the fan 30 radially outward, so that they can pass through the cool air-permeable winding overhang or winding head 45. By this effect, the winding overhang 45 is cooled.
  • the cooling air takes after passing through the winding overhang 45 and after flowing around this winding overhang 45 by not shown here in this figure 1 openings a way radially outward.
  • the winding heads 45 are cooled by a radial flow of cooling air.
  • FIG. 2 shows a five-phase generator 10 according to a first exemplary embodiment. Since the electrical interconnection of the generator 10 is in the foreground, the generator 10 is shown here with reference to its circuit diagram. It should be noted that the orientation of the five slots arranged in slots of a stator 16 Lungsstrnature 12 each represents the electrical angle of the winding strands 12 to each other, in particular the electrical angle ⁇ , which adjusts to the Verschaltungspraxisen 14 (14.1 to 14.5).
  • the generator 10 is connected to a voltage source U and a (B10) rectifier 16 with five bridge arms 18 (18.1 to 18.5).
  • B10 means that it is a bridge rectifier, with two rectifier diodes per bridge, with five bridges connected in parallel, resulting in ten diodes in the bridge rectifier.
  • the assignment between junctions 14 and bridge branches 18 is more precise follows: 14.1 to 18.3, 14.2 to 18.2, 14.3 to 18.1, 14.4 to 18.5 and 14.5 to 18.4
  • the electrical angle ⁇ between two winding strands 12 at a connection point 14 is in each case 36 °, but this angle ⁇ can also be chosen to be smaller. as has already been explained in detail in this application.
  • a generator 10 according to the figure 2 is particularly suitable for a high power output.
  • Figure 3 shows a representation of the phase wires and their layers in the grooves according to the first embodiment. Since this is the representation of the stator or stator 16 of a five-phase generator 10, the so-called groove step is five slots. D. h., The wire of the first strand 12 extends from the Verschaltungs Vietnamese in the first groove 1 and from there into the next groove, the groove 6, see also Fig. 3a. The next occupied groove is then the groove 11, which then follows the groove 16, the groove 21 and finally the groove 26 in the particular scheme or grooving step. After the groove 26 of the wire ends in Verschaltungspraxis 14.3.
  • the wire of the second strand 12 extends from the Verschaltungstician 14.4 in the first groove 8 and from there into the next groove, the groove 13.
  • the next occupied groove is then the groove 18, which then in the particular scheme or Grooves the groove 23, the groove 28 and finally the groove 3 follows.
  • the wire ends at the connection point 14.2.
  • the wire of the third strand 12 extends from the Verschaltungstician 14.3 in the first groove 15 and from there into the next groove, the groove 20.
  • the next occupied groove is then the groove 25, which then in the particular scheme or Grooves the groove 30, the groove 5 and finally the groove 10 follows.
  • the wire ends at the connection point 14.5.
  • the wire of the fourth strand 12 see Fig. 3d. D. h., The wire of the third strand 12 extends from the Verschaltungs Vietnamese in the first groove 22 and from there into the next groove, the groove 27. The next occupied groove is then the groove 2, which then in the particular scheme or Grooves the groove 7, the groove 12 and finally the groove 17 follows. After the groove 17 of the wire ends in Verschaltungs Vietnamese 14.4.
  • the wire of the fifth strand 12 see Fig. 3e. D. h.
  • the wire of the fifth strand 12 extends from the Verschaltungs Vietnamese 14.5 in the first groove 29 and from there into the next groove, the groove 4.
  • the next occupied groove is then the groove 9, which then in the particular scheme or Grooves the groove 14, the groove 19 and finally the groove 24 follows. After the groove 24 of the wire ends in the Verschaltungsddling 14.2.
  • stator 16 has more than just thirty grooves, so for example forty or fifty or more, accordingly more turns are to be carried out.
  • FIG. 4 shows a five-phase generator according to a second exemplary embodiment.
  • the difference from the first exemplary embodiment consists in the fact that the individual winding strands 12 are bridged on two connection points 21 within one winding strand 12 both on the one hand (via the interconnection points 14.1 to 14.5) and via these connection points 21 the middle sections of the winding strands 21 in FIG a ring circuit connected to each other.
  • About two adjacent Verschaltungsten 21 three partial windings of three different strands 12 are connected in a triangle to the pentagon, formed from partial strands of all winding strands 12, Figure 4.
  • FIG. 5 shows a five-phase generator 1 according to a third exemplary embodiment.
  • the generator 10 is illustrated by means of its circuit diagram, and the orientation of the five winding strands 12 arranged in slots of a stator 16 with their respective first and second sub-strands 22, 24 respectively sets the electrical angles of the sub-strands 22, 24 within the winding strands
  • the generator 1 is connected to a voltage source U and a (BIO) rectifier 16 with five bridge branches 18 (18.1 to 18.5) and executed in star connection, in addition, a Sehnung was introduced.
  • Figure 6 shows how the individual sub-strands 22 and 24 are arranged in the stator 16 and its grooves.
  • the partial figures 6a, 6c, 6e, 6g and 6i show the position of the partial strands 22, the partial figures 6b, 6d, 6f, 6h and 6j the position of the partial strands 24.
  • "0" indicates the neutral point shown in FIG.
  • the shown five-phase generator has a particularly good magnetic noise behavior, which is comparable to that of a six-phase generator, but the generator is cheaper to manufacture.
  • the number of grooves of the stator 16 is a multiple of ten and preferably corresponds to a product of Polpocress and ten, wherein the pole pair number is between six and eight.

Landscapes

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

Abstract

Générateur électrique pentaphasé (1), en particulier pour un véhicule à moteur, qui comporte cinq branches électriques (12) pour cinq phases différentes. Les phases sont électriquement connectées ensemble à des points d'interconnexion (14), l'angle électrique (a) aux points d'interconnexion (14) mesurant entre 25° et 36°.
EP06755278A 2005-05-20 2006-05-22 Generateur pentaphase Ceased EP1886399A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005023363A DE102005023363A1 (de) 2005-05-20 2005-05-20 Fünfphasiger Generator
PCT/EP2006/062505 WO2006122985A1 (fr) 2005-05-20 2006-05-22 Generateur pentaphase

Publications (1)

Publication Number Publication Date
EP1886399A1 true EP1886399A1 (fr) 2008-02-13

Family

ID=36498557

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06755278A Ceased EP1886399A1 (fr) 2005-05-20 2006-05-22 Generateur pentaphase

Country Status (6)

Country Link
US (1) US7989996B2 (fr)
EP (1) EP1886399A1 (fr)
JP (2) JP2009505614A (fr)
CN (1) CN101180783A (fr)
DE (1) DE102005023363A1 (fr)
WO (2) WO2006122846A1 (fr)

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DE102006052111A1 (de) * 2006-11-06 2008-05-08 Robert Bosch Gmbh Elektrische Maschine
DE102007005742A1 (de) 2007-01-29 2008-07-31 Robert Bosch Gmbh Mehrphasige elektrische Maschine
DE102007025971B4 (de) * 2007-06-04 2018-06-07 Seg Automotive Germany Gmbh Elektrische Maschine mit hybriderregtem Rotor
FR2919126B1 (fr) * 2007-07-18 2009-09-25 Valeo Equip Electr Moteur Dispositif d'alimentation pour un alternateur de vehicule automobile et alternateur mettant en oeuvre un tel dispositif
DE102007034325A1 (de) * 2007-07-24 2009-01-29 Robert Bosch Gmbh Elektrische Maschine
DE102007058910A1 (de) * 2007-11-30 2009-06-04 Robert Bosch Gmbh Elektrische Maschine
DE102008042504A1 (de) * 2008-09-30 2010-10-21 Robert Bosch Gmbh Elektrische Maschine mit einem Kontaktelement zur elektrischen Verbindung elektrischer Bauteile
DE102009001543A1 (de) * 2009-03-13 2010-09-16 Robert Bosch Gmbh Elektrische Maschine und Verfahren zur Herstellung einer elektrischen Maschine
EP2930837A1 (fr) * 2014-04-10 2015-10-14 GE Energy Power Conversion Technology Ltd Transformateurs électriques
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Also Published As

Publication number Publication date
JP2012085533A (ja) 2012-04-26
CN101180783A (zh) 2008-05-14
US20070296289A1 (en) 2007-12-27
DE102005023363A1 (de) 2006-11-23
WO2006122985A1 (fr) 2006-11-23
JP2009505614A (ja) 2009-02-05
WO2006122846A1 (fr) 2006-11-23
US7989996B2 (en) 2011-08-02

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