WO2023117242A1 - Système de transformateur inductif pour la transmission d'énergie électrique dans un enroulement d'excitation d'un rotor - Google Patents

Système de transformateur inductif pour la transmission d'énergie électrique dans un enroulement d'excitation d'un rotor Download PDF

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Publication number
WO2023117242A1
WO2023117242A1 PCT/EP2022/082612 EP2022082612W WO2023117242A1 WO 2023117242 A1 WO2023117242 A1 WO 2023117242A1 EP 2022082612 W EP2022082612 W EP 2022082612W WO 2023117242 A1 WO2023117242 A1 WO 2023117242A1
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WO
WIPO (PCT)
Prior art keywords
hybrid
rotor
coil
phase
transformer
Prior art date
Application number
PCT/EP2022/082612
Other languages
German (de)
English (en)
Inventor
Patrick Fruehauf
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
Priority claimed from DE102022208302.4A external-priority patent/DE102022208302A1/de
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2023117242A1 publication Critical patent/WO2023117242A1/fr

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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
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
    • H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
    • H02P9/30—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
    • H02P9/302—Brushless excitation

Definitions

  • the invention is based on a stator and a rotor of an electrically excited synchronous machine, an electrically excited synchronous machine.
  • An electrically excited synchronous machine is already known from US20050218740 A1, which includes a stator that has a multiphase stator winding with multiple phase strands and a primary part of an inductive transmission system for transmitting electrical energy into an excitation winding of a rotor of the synchronous machine.
  • the primary part of the inductive transmitter system includes a primary transmitter winding.
  • the electrically excited synchronous machine of US20050218740 A1 comprises a rotor, which has an excitation winding for generating a rotor field for excitation of the synchronous machine and a secondary part of an inductive transmission system for transmitting electrical energy into the excitation winding of the rotor, the secondary part of the inductive transmission system having at least a secondary transformer winding for providing a transformer AC voltage and at least one rectifier circuit acting as a rectifier for rectifying the transformer AC voltage into a secondary DC voltage for the field winding.
  • the disadvantage is that the primary and secondary parts of the inductive transmission system are arranged as a transmission unit in a cavity in the rotor.
  • the transmitter unit requires a comparatively large amount of space and, as an additional component, generates additional costs.
  • the transmitter unit includes an exciter stator and an exciter rotor, which interact inductively as a transformer.
  • the stator according to the invention of an electrically excited synchronous machine with the characterizing features of claim 1 has the advantage that space is saved for the primary part of the inductive transmission system and the manufacturing costs of the stator are reduced. According to the invention, this is achieved in that the primary transformer winding is formed by a hybrid strand of the stator winding, which serves both to generate a rotary field of a three-phase system for driving the rotor and to generate a transformer field of the transformer system. In other words, the primary transformer winding is a part of the stator winding or is integrated in the stator winding. The stator winding thus acts as the primary transformer winding, so that no additional winding is required in the stator.
  • the hybrid strand of the stator winding is at least one of the phase strands that are connected in a star or delta connection, with both a phase current of the three-phase system and a primary transformer current of the transformer system being able to be fed into the hybrid strand, with the primary transformer current and the phase current can be fed in together as a total current in the case of a star connection and separately in the case of a delta connection.
  • the primary transformer current is fed in together with the phase current lu as a total current.
  • the primary transformer winding can be designed as part of the stator winding or integrated in the stator winding without the three-phase system and the transformer system interfering with one another or having a negative influence. It is also advantageous if, in the case of a star connection, the hybrid string has two parallel hybrid substrings, each with a separate phase connection, with a first total current being able to be fed into one hybrid substring and a second total current being able to be fed into the other hybrid substring. The hybrid strand is thus divided into two parallel hybrid sub-strands.
  • a modified phase current can be fed into the hybrid strand compared to the other phase strands, which results from superimposing the primary transformer current of the transformer system on half a phase current of the three-phase system and is therefore a summation current.
  • the total currents for the two hybrid sub-strings are generated by an inverter.
  • the phase connections of the hybrid subphases can have a lower current carrying capacity than the phase connections of the other phase strands, in particular half the current carrying capacity.
  • the superimposition to form the summation currents takes place in software for controlling the inverter.
  • the two total currents fed into the hybrid sub-phases are designed in such a way that the sum of the primary transformer current components at a star point of the star connection is zero, so that the other phases of the three-phase system are unaffected. This can be achieved because the primary transformer currents in the two hybrid sub-strings are in phase opposition and have the same amplitude.
  • the hybrid strand has two hybrid substrings connected in series, with the phase voltages of the three-phase system being able to be applied to delta points of the delta circuit and with the primary transformer current being able to be fed in at an additional node between the two hybrid substrings, for example by applying a total voltage to the additional node, which is sufficient as a manipulated variable to regulate the transformer current.
  • the primary transformer current is provided by an inverter at an additional transformer-inverter output of the inverter, with the current carrying capacity of the transformer-inverter output corresponding to the transformer current.
  • the phase currents of the three-phase system are superimposed with the primary transformer current in the stator winding. The superposition of the transformer current has no influence on the voltages to be set at the delta points. It is also advantageous if
  • the respective hybrid sub-strand has a number of series-connected, in particular identical, coil groups, the number of coil groups corresponding in particular to a number of pole pairs of the transformer field and/or in particular half a number of pole pairs of the rotating field, and/or
  • the coil groups of the same hybrid sub-string are each electrically connected by a coil group connector, the jump width of which is designed in such a way that between two electrically connected coil groups of the respective hybrid sub-string there is a coil group of the other hybrid sub-string, and/or
  • each coil group has at least one coil pair, in particular a plurality of coil pairs connected in series, the number of coil pairs corresponding to a number of holes q in the stator, which in particular is equal to two, the coil pairs of one of the coil groups being electrically connected by a coil pair connector whose pitch corresponds in particular to a pole width of the stator poles minus one or plus one stator slot, and/or
  • Each pair of coils has two series-connected coils which, in particular, have opposite winding directions with regard to the current flow and, in particular, are of the same design with regard to the number of turns, a coil width and/or a conductor cross-section, with the two coils of the respective coil pair being electrically connected via a coil connector , whose jump width corresponds in particular to the pole width of the stator poles.
  • the stator winding includes standard winding elements and can therefore be manufactured inexpensively.
  • the hybrid string runs through stator slots that are assigned to the electrical phase of the hybrid string and represent hybrid slots
  • hybrid grooves are mixed hybrid grooves, half of which each contain electrical conductors from the two hybrid sub-strands of the hybrid strand,
  • the other half of the hybrid grooves are unmixed hybrid grooves that only have electrical conductors from the same hybrid sub-strand of the hybrid strand,
  • the mixed hybrid slots are provided as groups of adjacent stator slots, the number of mixed hybrid slots per group corresponding to a number of holes q, which is in particular two, - the unmixed hybrid slots are provided as groups of adjacent stator slots, the number of unmixed hybrid slots per group corresponding to a number of holes q, which in particular is equal to two.
  • the mixed grooves are magnetically effectively inactive when the hybrid sub-strands are energized with currents that have opposite signs to one another, since the conductors assigned to the two hybrid sub-strands are spatially at least essentially congruent, but of currents with different signs are traversed, whereby the total flux caused by you is close to zero.
  • the mutually facing coil sides of the two coils of the respective coil pair of one of the coil groups are arranged in the same hybrid slot and fully occupy them with, in particular, alternating slot position occupancy to form one of the unmixed hybrid slots, and/or
  • the hybrid slots half occupied by one of the coil groups are each fully occupied by one coil side of a coil of a respective adjacent coil group to form one of the mixed hybrid slots, and/or
  • Adjacent coil groups are assigned to different hybrid sub-strands.
  • the sum of the ampere-turns generated by the energized hybrid sub-strings corresponds to a field with a number of poles identical to the number of poles of the rotating field of the synchronous machine, but the difference in the ampere-turns generated by the energized hybrid sub-strings corresponds to a field with one pole number corresponds to half the number of poles of the synchronous machine rotating field.
  • the hybrid sub-strings are energized with currents that are formed by superimposing DC and differential components, the fields with the number of poles of the rotary system and half the number of poles of the rotary system can be controlled independently of one another, which means that a transformer function can be superimposed on the three-phase synchronous machines system is possible.
  • the rotor according to the invention of the electrically excited synchronous machine has an excitation winding for generating a rotor field for exciting the synchronous machine and a secondary part of the inductive transmission system for transmitting electrical energy into the excitation winding of the rotor, the secondary part of the inductive transmission system having at least one secondary transmission winding for providing a transformer AC voltage and at least one rectifier circuit acting as a rectifier, in particular a bridge circuit, for rectifying the transformer AC voltage into a secondary DC voltage for the field winding.
  • the rotor according to the invention with the characterizing features of claim 7 has the advantage that space for the secondary part of the inductive transmission system is saved and the manufacturing costs of the rotor are reduced. According to the invention, this is achieved in that the rotor has rotor teeth and in that rotor slots are formed between the rotor teeth and are designed to accommodate the field winding and to accommodate the at least one secondary transformer winding.
  • two secondary transformer windings are provided, the first secondary transformer winding being arranged in a first set of rotor slots and the second secondary transformer winding being arranged in a second set of rotor slots, the first set and the second set of rotor slots being circumferential are offset from one another with respect to a rotor axis, with the respective secondary transformer winding in each case comprising one or more coils connected in series or in parallel, each of which encloses a certain number of rotor teeth, the number of enclosed rotor teeth resulting in particular from an odd number multiplied by two and is in particular two or six.
  • the first rotor embodiment has the advantage that the secondary transformer winding is angle-coupled to the transformer field generated by the stator, so that a Energy transfer from the stator to the rotor is possible, with the rotor transformer winding as an AC voltage or.
  • AC power source works.
  • the rotor includes two secondary transformer windings that are offset from each other by an odd number of rotor teeth (corresponding to a 90° or 270° offset electrically with respect to the transformer field).
  • the rotor-side transformer winding is therefore effectively 2-phase, whereby in each rotor angle bearing at least one of the two secondary transformer windings is magnetically coupled to the stator-side transformer field, whereby a transformer-type energy transmission to the rotor is possible in every rotor angular position. In this way, so-called dead spots with regard to the rotor angle are avoided.
  • the field winding has at least one field winding, which in each case comprises two first pairs of coils connected in series, with the secondary transformer winding being formed by a partial phase of the respective field of excitation, which is interposed between the two first pairs of coils of the respective field of excitation and each comprising a secondary hybrid coil assembly each having two AC outputs, a DC input and a DC output.
  • the second rotor embodiment has the advantage that the secondary transformer winding of the rotor is integrated or formed in part of the field winding.
  • the partial strand of the respective exciter strand with the hybrid coil arrangement is used both for the electrical excitation of the synchronous machine and for the secondary transmission of the transformer system.
  • Both the excitation direct current and the transformer alternating current flow through the hybrid coil arrangements, which means that the conductor cross-section is better used over time, which means that with the same overall rotor excitation there is less power loss on the rotor, which leads to less heating of the rotor Rotor and thus leads to a higher system efficiency and a higher continuous output.
  • space is saved on the rotor for the secondary transformer winding, which can be used, for example, to increase the number of turns or the conductor cross-section of the other windings. It is advantageous if
  • the respective secondary hybrid coil arrangement has two parallel-connected second coil pairs, each of which comprises two second single-tooth coils, each for generating a transformer AC voltage through inductive interaction with a primary part of the transformer system, the two second single-tooth coils in particular with regard to a number of turns and a conductor cross-section are formed the same, and / or
  • An intermediate node is provided between the second single-tooth coils of the respective second coil pairs to form one of the AC voltage outputs, and/or
  • the AC voltage outputs of the respective secondary hybrid coil arrangement are each electrically connected to an AC voltage input of the rectifier circuit, with in particular two rectifier circuits being provided for each hybrid coil arrangement, and/or
  • the respective rectifier circuit has two DC voltage outputs for generating a potential difference between the ends of the respective excitation branch, with a positive DC voltage potential with respect to the intermediate nodes of the respective hybrid coil arrangement at one of the two ends of the respective excitation branch and at the other of the two ends a negative DC voltage potential can be generated with respect to the intermediate nodes of the respective hybrid coil arrangement, the absolute values of the two opposite DC voltage potentials being in particular the same size.
  • the rotor winding consists only of single-tooth coils, which are easy to manufacture and offer more freedom in system design than coils that enclose several teeth.
  • the single tooth coils can be clipped onto the rotor teeth as they do not overlap with other coils.
  • single-tooth coils have the shortest conductor length in relation to the number of turns or the lowest winding head portion, which means that a winding with a low ohmic resistance is possible, which leads to less heating of the rotor and thus to a higher system efficiency and higher continuous power leads.
  • the field winding has two field strands which are connected in parallel by means of strand connectors and each have the secondary hybrid coil arrangement.
  • the hybrid coil arrangement of the first exciter strand consists of single-tooth coils which are offset by an odd number of rotor teeth from the single-tooth coils of the hybrid coil arrangement of the second exciter strand, which corresponds to an offset of 90° or 270° electrically with respect to the transformer field.
  • the hybrid coil configurations are therefore effectively 2-phase together, which means that in every rotor angular position at least one of the two secondary hybrid coil configurations is magnetically coupled to the stator-side transformer field, which means that in every rotor angular position a transformational energy transmission to the rotor is possible and thus dead centers regarding rotor angle can be avoided.
  • the first pairs of coils each have two first single-tooth coils and the first single-tooth coils of the first coil pairs are in particular of the same design with regard to a number of turns and a conductor cross-section.
  • an identical magnetic current is provided from rotor tooth to rotor tooth, with the current density in the conductors being constant. This leads to an even distribution of the ohmic power loss on the rotor, which means that hotspots can be avoided or mitigated. This enables a lower thermal load on the rotor and a higher continuous output.
  • At least one first single-tooth coil and at least one second single-tooth coil is provided on each of the rotor teeth, with the number of turns of the second single-tooth coils being in particular smaller than the number of turns of the first single-tooth coils, in particular such that a required transformer AC voltage can be generated.
  • the ohmic resistance of the winding arrangement and the transformer voltage present on the rotor can be matched to one another and optimized, in particular taking into account the rectifying semiconductor elements of the rectifier circuit, with an optimum between current and voltage being sought. It is also advantageous that
  • the two single-tooth coils of at least one, in particular each, of the first and/or second coil pairs are each distributed over two different rotor teeth, between which there is a certain number of rotor slots, which results from an odd number multiplied by two and, for example, two or six is, and/or
  • the two second coil pairs of the respective hybrid coil arrangement for parallel connection are each electrically connected by two coil pair connectors, wherein the second single-tooth coils facing the same coil pair connector are distributed from different second coil pairs of the respective hybrid coil arrangement to two different rotor teeth, between which a specific number of rotor slots is an odd number multiplied by two, such as two or six.
  • respective single-tooth coils are formed which are respectively complementary to certain other single-tooth coils of the excitation circuit.
  • a series connection of one of the single-tooth coils with a single-tooth coil complementary to it has no AC voltage induced by the primary transformer field at the ends of the series connection, since the induced AC voltages of the two complementary single-tooth coils compensate each other.
  • the AC voltages induced in the single-tooth coils of the first coil pairs and second coil pairs by the stator-side transformer field are identical in terms of shape and amplitude, but differ in sign (i.e. they are in phase opposition or the electrical phase shift is 180°), so that the induced AC voltages in the Series connection to the coil pair voltage added results in zero.
  • the voltage that can be measured between two ends of one of the second coil pairs has no voltage component induced by the primary transformer field, so that there is no induced AC voltage component between the direct current input and direct current output of the respective hybrid coil arrangement and for the respective hybrid coil arrangement between its direct current input and output, a series connection of an inductance with an ohmic resistance can be assumed as a simplified equivalent circuit diagram.
  • the hybrid coil arrangement can therefore be energized with direct current for rotor excitation be used in that the DC voltage outputs of the rectifier circuit are or will be connected to the string connectors of the excitation circuit.
  • the invention is also based on an electrically excited synchronous machine with a stator according to the invention and a rotor according to the invention.
  • the electrically excited synchronous machine according to the invention has the advantage that space is saved for the inductive transmission system and the manufacturing costs of the synchronous machine are reduced.
  • the inductive transmission system requires no additional component, in particular no transformer.
  • the number of poles of the inductive transmission system corresponds at least effectively to half the number of poles of the three-phase system.
  • an 8-pole three-phase system and a 4-pole transformer system is provided.
  • the currents are superimposed to form a stator flux, which corresponds to a superimposition of a field of a three-phase system and a field of a transformer system with different numbers of pole pairs.
  • the invention also relates to a control device for controlling the synchronous machine according to the invention.
  • the control device includes an inverter for providing phase voltages for supplying energy to the phase connections of the stator winding of the stator according to the invention and a control unit for controlling the inverter.
  • the invention also relates to a method for operating a synchronous machine according to the invention with a control device, the control device controlling the inverter for operating the synchronous machine in such a way that the inverter
  • phase voltages for the hybrid sub-strings of the hybrid string and two phase voltages for the other phase strings are provided, the phase voltages for the hybrid sub-strings being superimposed on a phase voltage to generate the Three-phase system are formed with a transformer voltage of the transformer system to generate phase currents in the hybrid sub-phases;
  • phase voltages are provided for application to the delta points of the delta connection and a total voltage for application to the additional node, the phase voltages forming a three-phase rotary AC voltage system for generating the three-phase system and the total voltage as a superimposition of a hybrid strand mean voltage of the rotary -AC voltage system is formed with a transformer voltage of the transformer system to generate the primary transformer current and the total currents in the hybrid sub-strings.
  • FIG. 1 shows a system view of an electrically excited synchronous machine according to the invention
  • FIG. 2 shows the stator winding according to FIG. 1 in a star connection with a hybrid strand according to the invention
  • FIG. 4A shows a phase diagram with a time profile of the phase currents flowing in the stator winding for the star connection according to FIG. 2, FIG three-dimensional view of the hybrid strand according to the invention according to FIG. 2 or FIG. 3 as a winding,
  • FIG. 6 shows a further three-dimensional view of the hybrid strand according to the invention according to FIG. 2 or FIG. 3 as a winding
  • FIGS. 5 and 6 show one of several coil groups for forming the hybrid strand according to the invention according to FIGS. 5 and 6,
  • FIG. 7B another view of the coil group according to FIG. 7A, 8 shows one of two pairs of coils to form the coil group according to FIG.
  • FIGS. 5 and 6 shows an arrangement of the conductors of the hybrid strand according to the invention according to FIGS. 5 and 6 in stator slots of the stator, shown in a linear development
  • FIG. 9B shows a view of the conductors of the hybrid strand according to the invention according to FIG. 9A with the respective signs of the three-phase current component of the three-phase system in the respective conductors,
  • FIG. 9C shows a view of the conductors of the hybrid strand according to the invention according to FIG. 9A with the respective signs of the transmitter current component of the transmitter system in the respective conductors,
  • Fig. 10A in a cumulative diagram a flux generated by the total current per machine pole
  • Fig. 10B in a diagram, a magnetic flux per machine pole generated exclusively by the phase current component in the respective total current
  • FIG. 11 the rotor exciter circuit according to the first rotor design, FIG according to Fig.11 on the rotor teeth of the rotor of the synchronous machine,
  • FIG. 13 shows another system view of the electrically excited synchronous machine with a star-connected stator winding according to the invention and a rotor exciter circuit according to the first rotor embodiment according to FIG. 1 and FIG. 11,
  • FIG. 14 an alternative rotor exciter circuit according to a second rotor embodiment
  • FIG. 15 shows the distribution of the coils of the rotor exciter circuit according to the second rotor embodiment according to FIG. 14 on the rotor teeth of the rotor of the synchronous machine according to FIG. 1 and FIG
  • FIG. 16 shows a further system view of the electrically excited synchronous machine with a star-connected stator winding according to the invention and a rotor exciter circuit according to the second rotor embodiment according to FIG. 1 and FIG. Description of the exemplary embodiments
  • FIG. 1 shows a system view of an electrically excited synchronous machine 1.
  • the synchronous machine 1 comprises a stator 10 with a stator winding 11 according to the invention in a star connection or delta connection and a rotor 30 according to the invention which can be rotated about a rotor axis 29 according to a first rotor embodiment according to FIGS. 11 to 13 or according to a second rotor embodiment according to FIG 14 to 16.
  • the stator winding 11 is shown as an example in a star connection and the rotor 30 of the first rotor embodiment is shown as an example.
  • the electrically excited synchronous machine 1 has an inductive transmission system 2 according to the invention for transmitting electrical energy into an excitation winding 32 of the rotor 30 of the synchronous machine 1.
  • a primary part 3 of the inductive transmission system 2, which includes a primary transmission winding 4, is formed on the stator 10.
  • a secondary part 5 of the inductive transmission system 2 is provided on the rotor 30 .
  • the stator winding 11 of the stator 10 is multi-phase, for example three-phase, and has a plurality of phase strands 12 which are each assigned to one of the electrical phases U, V, W and each have a phase connection 14 to an inverter 7 at one of the two ends.
  • the electrical phases U or U1,U2,V,W are supplied by the inverter ? provided, which is controlled by a control unit 8.
  • the primary transformer winding 4 is formed by a hybrid strand of the stator winding 11, which serves both to generate a rotary field of a three-phase system 6 for driving the rotor 30 of the synchronous machine 1 and to generate a transformer field of the inductive transformer system 2.
  • the number of poles of the inductive transmission system 2 effectively corresponds to at least half the number of poles of the three-phase system 6. Therefore, the synchronous machine 1 shown in FIG the three-phase system 6 shown with eight poles, for example.
  • FIG. 2 shows the stator winding 11 of the stator 10 according to FIG. 1 with a hybrid phase 13 according to the invention.
  • FIG. 3 shows an alternative stator winding 11 in a delta connection with an alternative hybrid phase 13 according to the invention.
  • the hybrid strand 13 of the stator winding 11 is at least one of the phase strands 12, which can be connected in a star connection according to FIG. 2 or in a delta connection according to FIG. Both a phase current of the three-phase system 6 assigned to the hybrid strand and a primary transformer current Itransf of the transformer system 2 can be fed into the hybrid strand 13 in a superimposed manner.
  • the transformer current Itransf is superimposed on the phase current lu in a hybrid phase, ie the electrical phase of the hybrid strand 13 .
  • a hybrid phase ie the electrical phase of the hybrid strand 13 .
  • This is, for example, a so-called anti-phase (push-pull) superimposition.
  • the hybrid phase is phase II, for example.
  • the primary transformer current Itransf can be an alternating current or a direct current.
  • the currents are superimposed to form a stator flux, which corresponds to a superimposition of a field of the three-phase system 6 and a field of the transformer system 2 with different numbers of pole pairs.
  • the primary transformer current Itransf can be fed in as a total current together with the phase current lu in the case of the star connection according to FIG. 2 and separately in the case of the delta connection according to FIG.
  • the hybrid phase 13 of the stator winding 11 has two parallel hybrid partial phases 13.1, 13.2.
  • the hybrid sub-strings 13.1, 13.2 each have a separate phase connection 14.1, 14.2 to the inverter 7 at one of the two ends and at the other of the two ends a connection to a star point 15 of the star connection.
  • the remaining phase strands 12 of phases V and W are also connected to the neutral point 15 with one of their ends.
  • a first phase current l Su mi flows in one hybrid sub-string 13.1 due to the current being fed in, which results from an additive superimposition of the primary transformer current Itransf of the transformer system 2 on one half of the phase current lu of the three-phase system 6 assigned to the hybrid string 13.
  • a second phase current Isum2 which results from a subtractive superimposition of the primary transformer current Itransf of the transformer system 2 on one half of the phase current lu of the three-phase system 6 assigned to the hybrid phase 13, flows in the other hybrid partial phase 13.2 due to the current feed.
  • phase current component in the phase current l Su mi is a current with half the amplitude compared to the other phase currents l v w to be fed in.
  • the transformer current components of the two phase currents Isumi,lsum2 have an identical form and amplitude, but different signs and cancel each other out at the neutral point.
  • the remaining phase strands V, W are not influenced by the transformer current component.
  • Isum2 (Iv + Iw) / 2 - Itransf
  • the inverter ? has four inverter outputs 7.1 according to FIG.
  • a control device 9 is provided for the operation of the electrically excited synchronous machine 1 according to FIG.
  • the control unit 8 controls the inverter 7 for the operation of the synchronous machine 1 in such a way that the inverter 7 in the case of a star connection provides two phase voltages for the hybrid sub-phases 13.1, 13.2 of the hybrid phase 13 and two phase voltages for the remaining phase phases 12.
  • the phase voltages for the hybrid sub-strings 13.1, 13.2 are each formed as a superimposition of one of the phase voltages of a three-phase AC voltage system for generating the three-phase system 6 with a transformer voltage of the transformer system 2 for generating the phase currents l SU mi,lsum2 in the hybrid sub-strings 13.1, 13.2.
  • the hybrid strand 13 according to Figure 2 is divided into two parallel hybrid sub-strands 13.1, 13.2, each of which has a number of turns whose value corresponds, for example, to the number of turns of the remaining phase strands 12, so that the amplitude of the induced by the magnetic flux of the rotor Voltage in the phase strands 12 and hybrid sub-strands 13.1,13.2 is the same.
  • the hybrid strand 13 has two hybrid sub-strands 13.1, 13.2 connected in series.
  • the ones from the inverter? Coming phase voltages U', V', W' of the three-phase system 6 can be applied to delta points 16 of the delta circuit.
  • the triangular points 16.1, 16.2 are provided at the two ends of the hybrid strand 13.
  • the primary transformer current Itransf can be fed in at an additional node 17 between the two hybrid sub-strands 13.1, 13.2.
  • the primary transformer current Itransf is divided into two halves at the additional node 17 and flows through the two hybrid sub-strands 13.1, 13.2 to the triangle points 16.1, 16.2.
  • a first phase current I Su mi flows in one hybrid sub-phase 13.1, which results from an additive superimposition of half of the transformer current ltransf/2 on the phase current lu.
  • a second phase current Isum2 flows, which results from a subtractive superimposition of half of the transformer current ltransf/2 on the phase current lu.
  • phase currents l Sumi , Isum2 result from the formulas:
  • Isum1 III + ltransf/2
  • Isum2 lu " lfransf/2
  • the primary transformer current Itranst of the transformer system 2 can be fed in by applying a voltage to the additional node 17 which is formed as an additive superimposition of the transformer voltage Utranst on a hybrid phase mean voltage.
  • the hybrid strand mean voltage has a voltage value that corresponds to a mean value of the two voltages of the three-phase AC voltage system present at the triangle points 16.1 16.2.
  • the inverter 7 has four inverter outputs 7.1 according to FIG.
  • the control unit 8 controls the inverter 7 for the operation of the synchronous machine 1 such that in the case of the delta connection, the inverter 7 provides three phase voltages for application to the delta points 16 of the delta connection and a total voltage for application to the additional node 17 .
  • the three phase voltages form a three-phase AC voltage system to generate the three-phase system 6.
  • the total voltage is formed as a superimposition of the hybrid strand mean voltage of the three-phase AC voltage system with a transformer voltage of the transformer system 2 to generate the primary transformer current Itransf and the phase currents l SU mi,lsum2 in the hybrid strands 13.1, 13.2.
  • the two series-connected hybrid subphases 13.1, 13.2 each have a number of turns whose value corresponds, for example, to half the number of turns of the other phase strands.
  • the series connection of the hybrid sub-strands 13.1, 13.2 to form the hybrid strand 13 has a number of turns whose value corresponds, for example, to the number of turns in the remaining phase strands 12, so that the amplitude of the voltage induced by the magnetic flux of the rotor 30 in the phase strands 12 and the hybrid strand 13 is the same size.
  • FIG. 4A shows a phase diagram with a time profile of the phase currents Isumi, lsum2, lv, lw flowing in the stator winding 11 for the star connection according to FIG.
  • the phase diagram shows an example of the phase currents in the case of sinusoidal phase currents of a three-phase system 6 in a star connection according to FIG. 2 with a 120° phase shift.
  • the primary transformer current Itransf which is superimposed on the phase current lu in U1 and U2, is a sinusoidal current with a higher frequency than the frequency of the phase currents of the three-phase system 6.
  • the amplitude of the primary transformer current Itransf of the transformer system 2 is smaller as the amplitude of the phase current lu of the three-phase system 6 assigned to the hybrid strand 13.
  • the three-phase components of the phase currents l Su mi and Isum2 of the hybrid sub-phases 13.1, 13.2 have a lower amplitude than the three-phase components of the phase currents l v and l w of the other phase phases 12, since, as described above, they result from a superimposition of the primary transformer current Itransf of the transformer system 2 result in one half of the phase current lu of the three-phase system 6 assigned to the hybrid strand 13 .
  • the contribution of the hybrid line 13 to the three-phase current flow with half the three-phase current component in two hybrid sub-lines 13.1, 13.2 has the same amplitude as the contribution of the other phases to the three-phase current flow.
  • FIG. 4B shows a phase diagram with a time profile of the phase currents Isumi,lsum2,lv,lw flowing in the stator winding 11 for the delta circuit according to FIG.
  • the diagram shows an example of the phase currents in the case of sinusoidal phase currents of a three-phase system 6 in a delta connection according to FIG. 3 with a 120° phase shift.
  • the primary transformer current Itransf which is superimposed on the phase currents l SU mi , lsum2, is a sinusoidal current with a higher frequency than the frequency of the phase currents of the three-phase system 6.
  • the amplitude of the primary transformer current Itransf of the transformer system 2 is smaller than the amplitude of the phase current lu of the three-phase system 6 assigned to the hybrid strand 13.
  • the phase currents coming from the inverter 7 are generally not identical to the phase currents, the fundamental wave components of the phase currents coming from the inverter 7 and the fundamental wave components of the phase currents in particular having a phase shift of 30° electrically and the fundamental wave amplitudes of the Inverter 7 coming phase currents by a factor, which results from the value of a square root of three, is greater than the fundamental amplitude of the phase currents.
  • FIG. 5 shows a three-dimensional view of the hybrid strand 13 according to the invention according to FIG. 2 or FIG. 3 as a winding.
  • the respective hybrid sub-strand 13.1, 13.2 has a number of series-connected, in particular identical, coil groups 20, the number of coil groups corresponding in particular to a pole pair number of the transmitter field and/or in particular half a pole pair number of the rotating field. According to the exemplary embodiment in FIG. 5, the number of coil groups per hybrid sub-strand 13.1, 13.2 is equal to two.
  • the coil groups 20 of the same hybrid sub-string 13.1, 13.2 are each electrically connected by a coil group connector 21, the jump width of which is designed in such a way that between two electrically connected coil groups 20 of the respective hybrid sub-string 13.1, 13.2 there is one coil group 20 of the other hybrid sub-string 13.1, 13.2.
  • the hybrid sub-strands 13.1, 13.2 each have the same number of turns, for example.
  • phase strands 12 of phases V and W which are not shown in FIG. 5, each have the same number of turns and, for example, double the current-carrying capacity compared to the hybrid sub-phases 13.1, 13.2.
  • the double current-carrying capacity is achieved by the phase strands 12 of the phases V and W having a double conductor cross-section with respect to the hybrid sub-strands 13.1, 13.2 or as a parallel connection of two sub-strands are formed which compared to the hybrid sub-strands 13.1, 13.2 have the same conductor cross-section feature.
  • each of the partial strands connected in parallel must not have any voltage component induced by the primary transformer field, since otherwise circulating currents can flow which can counteract the transformer field.
  • This can be achieved by forming each of the partial strands as a series connection of a specific number of coil groups 20 adjacent in the circumferential direction, which is identical to half the number of pole pairs of the three-phase system 6 and is, for example, two.
  • a partial phase formed in this way also includes a corresponding complementary coil for each coil, which compensates for the voltage components induced by the primary transformer field, so that phase strands 12 of phases V and W are permeable to the transformer field despite being connected in parallel.
  • FIG. 6 shows a further three-dimensional view of the hybrid strand according to the invention according to FIG. 2 or FIG. 3 as a winding.
  • FIG. 7A shows one of several coil groups for forming the hybrid strand according to the invention according to FIG. 5 and FIG. FIG. 7B shows another view of the coil group according to FIG. 7A.
  • Each coil group 20 of the respective hybrid sub-strand 13.1, 13.2 has at least one pair of coils 22, in particular a plurality of pairs of coils 22 connected in series, the number of coil pairs corresponding to a number of holes q in the stator 10, which according to the embodiment is equal to two, for example.
  • the number of holes q corresponds to the number of stator slots per number of poles and phase strand.
  • the coil pairs 22 of one of the coil groups 20 are each electrically connected by a coil pair connector 23 whose pitch corresponds, for example, to a pole pitch (determined in the number of stator slots) of the stator poles minus one or plus one stator slot.
  • the pole width of the stator poles results from the number of stator slots in the stator divided by the number of stator poles in the stator.
  • the coil width SW can correspond to the pole width.
  • FIG. 8 shows one of two pairs of coils to form the coil group according to FIG.
  • Each pair of coils 22 has two series-connected coils 24 which, in particular, have an opposite winding direction with regard to the current flow and, in particular, are of the same design with regard to a number of turns, a coil width SW (distance between the coil sides 24.1 of the same coil 24 located in the stator slots) and/or a conductor cross-section are.
  • the two coils 24 of the respective pair of coils 22 are each electrically connected via a coil connector 25, the jump width of which corresponds to the pole width of the stator poles.
  • FIG. 9A shows an arrangement of the conductors of the hybrid strand 13 according to the invention according to FIG. 5 and FIG. 6 in stator slots 26 of the stator 10, shown in a linear development.
  • the hybrid string 13 runs through stator slots 26 which are assigned to the electrical phase of the hybrid string 13 and represent hybrid slots 27 . Only the hybrid slots 27 of the stator 10 are shown in FIG. 9A.
  • hybrid grooves 27 are mixed hybrid grooves 27m, half of which each contain electrical conductors from the two hybrid sub-strands 13.1, 13.2 of the hybrid strand 13.
  • the other half of the hybrid grooves 27 are unmixed hybrid grooves 27u, which only have electrical conductors from the same hybrid sub-strand 13.1, 13.2 of the hybrid strand 13.
  • the first hybrid partial line 13.1 is designated U1 and the second hybrid partial line 13.2 is designated U2.
  • the hybrid grooves 27 it is indicated which of the hybrid partial strands 13.1, 13.2 lies in the respective hybrid groove 27.
  • each of the stator slots 26 is assigned a consecutive number.
  • the hybrid partial strands 13.1, 13.2 each have two coil groups 20, with the individual conductor of the hybrid partial strand 13.1, 13.2 belonging either to a first coil group G1 of the two coil groups 20 or to the second coil group G2 of the two coil groups 20.
  • the mixed hybrid slots 27m are provided as groups of adjacent stator slots 26, the number of mixed hybrid slots 27m per group corresponding to a number of holes q, which according to the embodiment is equal to two, for example.
  • the unmixed hybrid slots 27u are provided as groups of adjacent stator slots 26, the number of unmixed hybrid slots 27u per group corresponding to a number of holes q, which, according to the embodiment, is equal to two, for example.
  • the mutually facing coil sides 24.1 of the two coils 24 of the respective coil pair 22 of one of the coil groups 20 are each arranged in the same hybrid slot 27 and occupy them with, for example, alternating slot position occupancy to form one of the unmixed hybrid slots 27u.
  • FIG. 9B shows a view of the conductors of the hybrid strand according to the invention according to FIG. 9A with the respective signs of the three-phase current component of the three-phase system 6 in the respective conductors.
  • FIG. 9C shows a view of the conductors of the hybrid strand according to the invention according to FIG. 9A with the respective signs of the transmitter current component of the transmitter system in the respective conductors.
  • FIG. 10A shows a magnetic flux generated by the respective cumulative current I Sumi , Isum2 for each machine pole as an example for a stator with eight poles.
  • the flux generated by the total currents I Sumi, Isum2 in the conductors of the hybrid strands 13.1 and 13.2 according to FIG. 10A can be split into two parts, namely a phase current part and a transformer current part, which are shown separately in FIG .
  • FIG. 10B shows a magnetic flux per machine pole generated exclusively by the phase current component in the respective summation current Isumi, Isum2, which belongs to the three-phase system 6.
  • the flux generated by the phase current components has eight poles with an amplitude that is proportional to the phase current component of the three-phase system 6 .
  • Fig.lOC shows in a diagram exclusively by the transmitter system 2 associated transmitter current component in the respective Total current l Su mi, Isum2 generated flux per machine pole.
  • the flux generated by the transformer current components has four poles with an amplitude that is proportional to the transformer current component of the transformer system 2 .
  • Each coil group 20 extends over two adjacent machine poles.
  • the secondary part 5 of the inductive transmission system 2 is described below for two different rotor designs:
  • a rotor exciter circuit 31 is provided on the rotor 30 , which includes the exciter winding 32 for generating a rotor field for exciting the synchronous machine 1 and a secondary part 5 of the inductive transmission system 2 for transmitting electrical energy into the exciter winding 32 of the rotor 30 .
  • the secondary part 5 of the inductive transformer system 2 comprises at least one secondary transformer winding 33 for providing a transformer AC voltage and at least one rectifier circuit 34 acting as a rectifier, for example a bridge circuit, for rectifying the transformer AC voltage into a secondary DC voltage for the field winding 32.
  • the rectifier circuit 34 each includes, for example, one or more, for example two, components 34.1 acting as rectifiers.
  • the rectifier circuit 34 has an AC voltage input 40 and two DC voltage outputs 41 for feeding the field winding 32 with direct current or for connecting to the two ends of the field winding 32.
  • the rotor 30 of the electrically excited synchronous machine 1 has rotor teeth 35 and that between the rotor teeth 35 rotor grooves 36 are formed, which for receiving the field winding 32 and for receiving the at least one secondary Transformer winding 33 is formed and, for example, is open in the radial direction towards the stator 10 .
  • FIG 11 shows the rotor excitation circuit 31 according to the first rotor embodiment.
  • two secondary transformer windings 33 are provided for the rotor excitation circuit 31, the first secondary transformer winding 33.1 being arranged in a first set 37.1 of rotor slots 36 and the second secondary transformer winding 33.2 being arranged in a second set 37.2 of rotor slots 36.
  • the first set 37.1 and the second set 37.2 of rotor slots 36 are offset from one another in the circumferential direction with respect to the rotor axis 29, in particular by an odd number of rotor slots 36, for example by one rotor slot 36. This achieves an offset of 90° electrically with respect to the transformer field .
  • the secondary transformer winding 33 with the two transformer windings 33.1, 33.2 is therefore effectively 2-phase.
  • Each secondary transformer winding 33.1, 33.2 comprises a coil 38 or a plurality of coils 38 electrically connected in series or in parallel.
  • the field winding 32 according to the first embodiment of the rotor comprises a plurality of coils 39 which can be connected in series or in parallel.
  • two rectifier circuits 34 are provided for each secondary transformer winding 33.1, 33.2, with the ends of the respective secondary transformer winding 33.1, 33.2 of the rotor 30 being connected to the two AC voltage inputs 40 of the two rectifier circuits 34.
  • FIG. 12 shows the distribution of the coils 38, 39 of the rotor excitation circuit 31 according to the first rotor embodiment according to FIG. 11 on the rotor teeth 35 of the rotor 30 of the synchronous machine 1.
  • the coils 38 of the respective secondary transformer winding 33.1, 33.2 each enclose a specific number of rotor teeth 35 adjacent in the circumferential direction, which corresponds to the coil width SW of the coils 38, the number of enclosed rotor teeth 35 increasing results in particular from an odd number multiplied by two and, according to FIG. 12, is equal to two, for example. Since the coils 38 of the respective secondary transformer winding 33.1, 33.2 each enclose an even number of rotor teeth 35, no voltage is induced in the respective secondary transformer winding 33.1, 33.2 by the synchronous flux (which has an alternating sign from rotor tooth 35 to rotor tooth 35).
  • the coils 39 of the excitation winding 32 are each designed as a single-tooth coil, for example, and thus enclose only one of the rotor teeth 35.
  • FIG. 13 shows a further system view of the electrically excited synchronous machine 1 with a stator winding according to the invention in a star connection and a rotor exciter circuit 31 according to the first rotor embodiment according to FIG. 1 and FIG.
  • FIG. 14 shows an alternative rotor excitation circuit 31 according to a second rotor embodiment.
  • the second rotor design differs from the first rotor design in that secondary transformer windings 33 of the rotor 30 are provided which, in contrast to the first rotor design, are not separate windings but are integrated or formed in part of the field winding 32 .
  • the exciter winding 32 has at least one exciter branch 32.1, which in each case comprises two first coil pairs 42 electrically connected in series.
  • the first pairs of coils 42 each have two first single-tooth coils 42.1, which are, for example, identical in terms of a number of turns and a conductor cross-section.
  • the secondary transformer winding 33 is formed by a hybrid partial strand 44 of the respective exciter strand 32.1, which is interposed between the two first coil pairs 42 of the respective exciter strand 32.1 and each includes a secondary hybrid coil arrangement 45.
  • the respective Hybrid coil arrangement 45 has two AC voltage outputs 46, a DC input 47 and a DC output 48.
  • the respective secondary hybrid coil arrangement 45 comprises two parallel-connected second coil pairs 43, each comprising two second single-tooth coils 43.1, each for generating a transformer AC voltage through inductive interaction with a primary part 3 of the transformer system 2.
  • the two second single-tooth coils 43.1 are, for example, identical in terms of a number of turns and a conductor cross-section.
  • the two first single-tooth coils 42.1 of one, for example each of the first coil pairs, are designed to be complementary to one another.
  • the two second single-tooth coils 43.1 of one, for example each of the second coil pairs 43 are designed to be complementary to one another.
  • Two of the single-tooth coils 42,43 are said to be mutually complementary if they are arranged on two different rotor teeth 35 between which lies a certain number of rotor slots 36, which results from an odd number multiplied by two and amounts to, for example, two or six, which corresponds to a phase angle of 180° electrically in relation to the transmitter field.
  • the AC voltages induced by the primary transmitter field in mutually complementary single-tooth coils 42.1, 43.1 are identical in form and amplitude, but have different signs.
  • a series circuit of one of the single-tooth coils 42.1, 43.1 with a single-tooth coil 42.1, 43.1 complementary to it has no AC voltage induced by the primary transformer field at the ends of the series circuit, since the induced AC voltages of the two complementary single-tooth coils 42.1, 43.1 compensate each other.
  • the voltage that can be measured between two ends of one of the first coil pairs 42 therefore has no voltage component induced by the primary transformer field, so that no alternating current is caused either, and therefore represents an inductive-resistive load for the excitation current supply.
  • the between two ends of one of the second Coil pairs 43 measurable voltage also has no induced by the primary transformer field voltage component, so that between DC input 47 and DC output 48 of the respective Hybrid coil arrangement 45 no induced AC voltage component is present and the respective hybrid coil arrangement 45 between its DC input 47 and its DC output 48 represents an inductive-resistive load.
  • An intermediate node 50 for forming one of the AC voltage outputs 46 is provided between the second single-tooth coils 43.1 of the respective second coil pairs 43 of the respective hybrid coil arrangement 45.
  • the two AC voltage outputs 46 of the respective secondary hybrid coil arrangement 45 are each electrically connected to the AC voltage input 40 of the respective rectifier circuit 34 .
  • two rectifier circuits 34 are provided for each hybrid coil arrangement 45.
  • the hybrid coil arrangement 45 can in each case be used as an AC voltage source in that its opposite-phase intermediate nodes 50 are connected to AC voltage inputs 40 of the two rectifier circuits 34 .
  • the respective rectifier circuit 34 has the two DC voltage outputs 41 in each case for generating or applying a potential difference between the ends of the respective exciter strand 32.1.
  • a positive DC potential with respect to the intermediate node 50 of the respective hybrid coil arrangement 45 can be generated at one of the two ends of the respective exciter strand 32.1, and a negative DC voltage potential with respect to the intermediate node 50 of the respective hybrid coil arrangement 45 can be generated at the other of the two ends.
  • the magnitudes of the two opposing DC voltage potentials are, in particular, the same.
  • the field winding 32 has, for example, two field strands 32.1, which are connected in parallel by means of two strand connectors 51 and each have the secondary hybrid coil arrangement 45.
  • the respective exciter strand 32.1 has an even number of single-tooth coils 42,43.
  • 14 shows the first single-tooth coils 42.1 with the letter E for "excitation winding" and a tooth number, the tooth number indicating that rotor tooth 35 on which the respective first single-tooth coil 42.1 is provided.
  • the second single-tooth coils 43.1 are denoted by the letter H for "hybrid strand” and the respective tooth number, with the tooth number indicating that rotor tooth 35 on which the respective second single-tooth coil 43.1 is provided.
  • the rotor teeth 35 of the rotor 30 are numbered consecutively in the circumferential direction with respect to the rotor axis 29 .
  • the respective end of the coil for all single-tooth coils 42.1, 43.1 is marked with a dot and the respective beginning of the coil is marked without a dot.
  • the coil end of the respective coil 42.1, 43.1 can be, for example, the last or the first conductor that is inserted into the respective rotor slot 36.
  • the conductors of the coils 42.1, 43.1 shown symbolically in FIG. 14 all run in the same direction around the rotor teeth 35, i.e. from the respective coil end clockwise when viewed from the radial outside of the respective rotor tooth 35 for all coils 42.1, 43.1 or for all coils 42.1, 43.1 counterclockwise.
  • the coils 42.1,43.1 of the rotor teeth 35 with an odd number are in Fig.14 opposite the coils 42.1,43.1 of the Rotor teeth 35 with an even number are connected with reverse polarity, so that the excitation current runs around the rotor teeth 35 following the coil conductor of the respective coil with an alternating direction of rotation from rotor tooth 35 to rotor tooth 35 .
  • the magnetic field with from rotor tooth 35 to rotor tooth 35 alternating
  • the direction of magnetization can also be generated by coils 42.1, 43.1 with the winding direction alternating from rotor tooth 35 to rotor tooth 35, with the coils 42.1, 43.1 then not having to be polarized with respect to the coil end.
  • the two single-tooth coils 42.1,43.1, at least one, in particular each, of the first and/or second coil pairs 42,43 are each distributed over two different rotor teeth 35 in such a way that there is a certain number of rotor slots 36 between the rotor teeth 35, which consist of a Multiplying an odd number by two gives (i.e. 2, 6, 10, etc.) and is, for example, two or six.
  • the two second coil pairs 43 of the respective hybrid coil arrangement 45 are each electrically connected by two coil pair connectors 52 for parallel connection.
  • the second single-tooth coils 43.1 facing the same coil pair connector 52 from different second coil pairs 43 of the respective hybrid coil arrangement 45 are, for example, also complementary to one another and are therefore distributed over two different rotor teeth 35 in such a way that there is a specific number of rotor slots 36 between these different rotor teeth 35, which results from multiplying an odd number by two (i.e. 2, 6, 10, etc.) and is, for example, two or six.
  • One of the two coil pair connectors 52 of the hybrid coil arrangement 45 forms the direct current input 47 and the other of the two coil pair connectors 52 forms the direct current output 48 of the hybrid coil arrangement 45.
  • the coil pair connectors 52 each form two second single-tooth coils 43.1, which are complementary to one another. and a first single tooth coil 42.1 electrically connected.
  • first single-tooth coils 42.1 of the first coil pairs 42 located in one of the excitation branches 32.1 are arranged on even-numbered rotor teeth 35 and the second single-tooth coils 43.1 of the second coil pairs 43 of the same exciter branch 32.1 are arranged on odd-numbered rotor teeth 35, or vice versa.
  • FIG. 15 shows the distribution of the coils 42.1, 43.1 of the rotor exciter circuit 31 according to the second rotor embodiment according to FIG. 14 on the rotor teeth 35 of the rotor 30 of the synchronous machine 1 according to FIG. 1 and FIG , 43.1 with respect to the rotor axis 29 radially one above the other.
  • At least one first single-tooth coil 42.1 and at least one second single-tooth coil 43.1 are provided on each of the rotor teeth 35 of the rotor 30.
  • a number of turns of the second single-tooth coils 43.1 is, for example, smaller than a number of turns of the first single-tooth coils 42.1, for example in such a way that a required transformer AC voltage can be generated.
  • the single-tooth coils 43.1 of the hybrid strand, marked with the letter H, are located radially on the inside and the single-tooth coils 42.1 of the field winding, marked with the letter E, are located radially on the outside.
  • An inverted arrangement with the single-tooth coils 43.1 of the hybrid strand radially on the outside and the single-tooth coils 42.1 of the field winding radially on the inside is also possible.
  • the individual tooth coils 42.1, 43.1 can also be arranged in multiple layers one above the other with respect to an axis of the respective rotor tooth.
  • FIG. 16 shows a further system view of the electrically excited synchronous machine 1 with a stator winding 11 according to the invention in a star connection and a rotor exciter circuit 31 according to the second rotor embodiment according to FIG. 1 and FIG.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Synchronous Machinery (AREA)

Abstract

L'invention concerne un stator (10) d'une machine synchrone à excitation électrique (1), ledit stator comprenant un enroulement de stator polyphasé (11) et une partie primaire (3) d'un système de transformateur inductif (2) pour transmettre de l'énergie électrique dans un enroulement d'excitation (32) d'un rotor (30) de la machine synchrone (1), la partie primaire (3) du système de transformateur inductif (2) ayant un enroulement de transformateur primaire (4) qui est formé par un brin hybride (13) de l'enroulement de stator (11), ledit brin hybride servant à la fois à générer un champ de rotation d'un système triphasé (6) pour entraîner le rotor (30) et à générer un champ de transformateur du système de transformateur (2). L'invention concerne également un rotor (30) d'une machine synchrone à excitation électrique (1), ledit rotor comprenant un enroulement d'excitation (32) pour générer un champ de rotor afin d'exciter la machine synchrone (1) et comprenant une partie secondaire (5) d'un système de transformateur inductif (2) pour transmettre de l'énergie électrique dans l'enroulement d'excitation (32) du rotor (30), la partie secondaire (5) du système de transformateur inductif (2) comprenant au moins un enroulement de transformateur secondaire (33) pour fournir une tension alternative de transformateur, le rotor (30) ayant des dents de rotor (35) et des rainures de rotor, (36) qui sont conçues pour recevoir l'enroulement d'excitation et pour recevoir ledit enroulement de transformateur secondaire (33), étant formées entre les dents de rotor (35). L'invention concerne également une machine synchrone à excitation électrique (1) comprenant un stator (10) selon l'invention et un rotor (30) selon l'invention.
PCT/EP2022/082612 2021-12-20 2022-11-21 Système de transformateur inductif pour la transmission d'énergie électrique dans un enroulement d'excitation d'un rotor WO2023117242A1 (fr)

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DE102021214713.5 2021-12-20
DE102021214713 2021-12-20
DE102022208302.4A DE102022208302A1 (de) 2021-12-20 2022-08-10 Induktives Übertragersystem zur Übertragung von elektrischer Energie in eine Erregerwicklung eines Rotors
DE102022208302.4 2022-08-10

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04347566A (ja) * 1991-05-22 1992-12-02 Shindaiwa Kogyo Kk ブラシレス同期機
US20050218740A1 (en) 2004-03-30 2005-10-06 Stout David E Low profile generator configuration
DE102013102900A1 (de) * 2013-03-21 2014-09-25 Feaam Gmbh Synchronmaschine
WO2017025142A1 (fr) * 2015-08-13 2017-02-16 Abb Schweiz Ag Machine asynchrone et son procédé de fonctionnement
DE102016216179A1 (de) * 2015-08-31 2017-03-02 Suzuki Motor Corporation Rotierende elektrische Maschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04347566A (ja) * 1991-05-22 1992-12-02 Shindaiwa Kogyo Kk ブラシレス同期機
US20050218740A1 (en) 2004-03-30 2005-10-06 Stout David E Low profile generator configuration
DE102013102900A1 (de) * 2013-03-21 2014-09-25 Feaam Gmbh Synchronmaschine
WO2017025142A1 (fr) * 2015-08-13 2017-02-16 Abb Schweiz Ag Machine asynchrone et son procédé de fonctionnement
DE102016216179A1 (de) * 2015-08-31 2017-03-02 Suzuki Motor Corporation Rotierende elektrische Maschine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GURAKUQ DAJAKU ET AL: "New Self-Excited Synchronous Machine with Tooth Concentrated Winding", 31 December 2013 (2013-12-31), XP055265212, Retrieved from the Internet <URL:https://dokumente.unibw.de/pub/bscw.cgi/d7992042/2013%20EDPC%20%20%28Dajaku%20-%20Gerling%29.pdf> [retrieved on 20160413] *
NOLAND JONAS KRISTIANSEN ET AL: "Excitation System Technologies for Wound-Field Synchronous Machines: Survey of Solutions and Evolving Trends", IEEE ACCESS, vol. 7, 6 August 2019 (2019-08-06), pages 109699 - 109718, XP011740827, DOI: 10.1109/ACCESS.2019.2933493 *

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