CN110429776B - Double 12 pulse wave double flow brushless generator - Google Patents
Double 12 pulse wave double flow brushless generator Download PDFInfo
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- CN110429776B CN110429776B CN201910716796.3A CN201910716796A CN110429776B CN 110429776 B CN110429776 B CN 110429776B CN 201910716796 A CN201910716796 A CN 201910716796A CN 110429776 B CN110429776 B CN 110429776B
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- 238000004804 winding Methods 0.000 claims abstract description 208
- 230000007704 transition Effects 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 230000007935 neutral effect Effects 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 1
- 230000005284 excitation Effects 0.000 description 17
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical group [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/16—Synchronous generators
- H02K19/36—Structural association of synchronous generators with auxiliary electric devices influencing the characteristic of the generator or controlling the generator, e.g. with impedances or switches
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/16—Synchronous generators
- H02K19/36—Structural association of synchronous generators with auxiliary electric devices influencing the characteristic of the generator or controlling the generator, e.g. with impedances or switches
- H02K19/365—Structural association of synchronous generators with auxiliary electric devices influencing the characteristic of the generator or controlling the generator, e.g. with impedances or switches with a voltage regulator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/16—Synchronous generators
- H02K19/38—Structural association of synchronous generators with exciting machines
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- 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
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
- H02K3/16—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots for auxiliary purposes, e.g. damping or commutating
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Synchronous Machinery (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses a double 12-pulse double-current brushless generator, which mainly comprises a base, a direct-current generator stator, a direct-current generator rotor, a rotating shaft, an alternating-current generator stator, an alternating-current generator rotor, an end cover, an exciter stator, an exciter rotor, a bearing, a rotary rectifier and a control system, and is characterized in that the direct-current generator rotor, the alternating-current generator rotor, the bearing and the exciter rotor are sequentially and fixedly arranged on the rotating shaft in a cavity of the base from front to back, the direct-current generator stator, the alternating-current generator stator, the end cover and the exciter stator are sequentially and fixedly arranged in the base from front to back, 4 sets of 3-phase windings are uniformly embedded in a groove in the inner circle of the direct-current generator stator, wherein the phase angle of 2 sets of windings is 0 DEG, the phase angle of the 2 sets of windings is 30 DEG, and 4 sets of direct-current outputs are respectively formed through rectifier rectification after the 4 sets of windings are output.
Description
Technical Field
The invention relates to the field of special motor production and manufacturing, in particular to a double-12 pulse wave double-current brushless generator.
Background
At present, the main modes for realizing AC/DC power supply of the aircraft ground power supply vehicle are as follows: an internal combustion engine drags a three-phase AC generator to generate AC power, and the DC power is obtained by reducing the voltage of the AC power by a transformer and rectifying the voltage. The AC/DC power supply mode has the following defects that the output voltage of the DC power supply has no automatic regulation function, only has a fixed DC voltage level, the ripple wave of the DC partial voltage is large, the AC power supply and the DC power supply cannot be used simultaneously, and the AC/DC power supply is not suitable for the working condition that the AC/DC power supply needs to be supplied simultaneously.
The other type is a double-current brushless generator with 2 alternating-current exciter machines, the generator comprises an alternating-current main generator and a direct-current main generator, the alternating-current main generator is provided with one exciter machine, the direct-current main generator is provided with one exciter machine and is a generator with one pole number, and although the independent power supply of alternating current and direct current can be realized, the structure is complex, and the excitation source interference is large.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides the double 12-pulse double-current brushless generator which has the advantages of compact structure, flexible power supply characteristic, no interference of an excitation source, stable performance and small occupied area and can realize the simultaneous power supply of an alternating current power supply and a direct current power supply on one motor.
The technical means adopted for solving the technical problems are as follows:
the double-12-pulse double-current brushless generator mainly comprises a machine base, a direct-current generator stator, a direct-current generator rotor, a rotating shaft, an alternating-current generator stator, an alternating-current generator rotor, an end cover, an exciter stator, an exciter rotor, a bearing, a first rectifier, a second rectifier and a control system, and is characterized in that the direct-current generator rotor, the alternating-current generator rotor, the bearing and the exciter rotor are fixedly arranged on the rotating shaft in a machine base cavity from front to back in sequence, so that the direct-current generator rotor, the alternating-current generator rotor and the exciter rotor share one rotating shaft to rotate, and the direct-current generator stator, the alternating-current generator stator, the end cover and the exciter stator are fixedly arranged on the inner wall of the machine base from front to back in sequence;
the circumference of the outer ring of the DC generator rotor is embedded with exciting windings of the DC generator rotor, the current of the exciting windings of the DC generator rotor is controlled by a control system, the DC generator stator is sleeved with the DC generator rotor, four groups of DC windings with the mutual difference of 30 DEG between every two groups of phases are uniformly distributed on the circumference of the inner ring of the DC generator stator, 4 sets of winding overlapping mode are adopted for the DC winding embedded lines, namely 4 layers of windings are embedded from the bottom of the slot to the notch of each stator slot, the 1 wire of each set of winding is sequentially wound on 1, 2, 3 and 4 layers of adjacent 4 slots of the stator, namely, winding marks of wires on the same layer in the adjacent stator slots are different, each stator slot is provided with 1 zero wire outgoing line and 1 fire wire outgoing line, all the zero wire outgoing lines in the stator slots are connected into a neutral point, and the fire wire outgoing lines of four groups of direct current windings with the phase difference of 30 DEG in every two groups in the stator slots are respectively rectified by a rectifier bridge and then are output in parallel to form double 12 pulse wave direct current output;
the alternating current generator stator is sleeved with the alternating current generator rotor, the alternating current generator stator winding is embedded on the circumference of the inner ring of the alternating current generator stator, the output end of the alternating current generator stator winding is connected with a control system, the circumference of the outer ring of the alternating current generator rotor is embedded with an exciting winding of the alternating current generator rotor, and the current of the exciting winding of the alternating current generator rotor is controlled by a control system;
the bearing outer ring penetrates through a bearing chamber arranged on the end cover and is fixedly connected with the end cover, so that the bearing is supported by the end cover;
the electric motor comprises an exciter rotor, an exciter stator, a first rectifier and a second rectifier, wherein the first rectifier and the second rectifier are fixedly arranged on the outer end face of the exciter rotor, 2 layers of armature windings are embedded in the circumference of an outer ring of the exciter rotor, each 2 layers of armature windings comprise 8-pole armature windings and 4-pole armature windings, the 4-pole armature windings and the 8-pole armature windings are in insulating contact and are arranged along the axial direction of the exciter rotor, each 2 convex teeth of an inner ring of the exciter stator are wound with 4-pole exciting windings, one convex tooth in each 4-pole exciting winding is wound with 8-pole exciting windings, so that each 4-pole exciting winding only induces electric potential on each 4-pole armature winding, each 8-pole exciting winding is controlled by a control system, the electric potentials induced by each 4-pole armature winding and each 8-pole armature winding are independent and do not interfere with each other, each 8-pole armature winding is connected with an exciting winding of the alternating-current generator rotor through an outgoing wire of the first rectifier, and each 4-pole exciting winding is connected with a direct-current exciting winding of the direct-current generator through an outgoing wire of the second rectifier.
The stator winding of the alternating current generator comprises a three-phase alternating current main output winding, an auxiliary winding for the alternating current generator and an auxiliary winding for the direct current generator, wherein the three-phase alternating current main output winding is sequentially embedded at the bottom of a stator inner ring groove, the auxiliary winding for the alternating current generator and the auxiliary winding for the direct current generator are respectively symmetrically arranged on the circumference of the stator, and are sequentially embedded at the groove opening of the stator inner ring groove;
the auxiliary windings for the alternating current generator and the auxiliary windings for the direct current generator are symmetrically arranged on the circumference of the stator respectively, and the number of stator slots occupied by the auxiliary windings for the alternating current generator and the auxiliary windings for the direct current generator on the inner ring of the stator is more than or equal to a multiple of 3 and less than half of the total slot number respectively.
The control system comprises a direct current automatic voltage regulator, an alternating current automatic voltage regulator, a direct current voltage drop compensation circuit and an alternating current voltage drop compensation circuit, wherein the output voltage of the control system is automatically regulated to be constant through the direct current automatic voltage regulator, the alternating current automatic voltage regulator, the direct current voltage drop compensation circuit and the alternating current voltage drop compensation circuit;
the 2 phases in the output end of the three-phase alternating current output winding of the alternating current generator stator winding are respectively and directly connected with an alternating current automatic voltage regulator, the other 1 phases are connected with the alternating current automatic voltage regulator through a current transformer penetrating through the phases and an alternating current voltage drop compensation circuit, the alternating current auxiliary winding of the alternating current generator stator winding is connected with the alternating current automatic voltage regulator, the direct current auxiliary winding of the alternating current generator stator winding is connected with the direct current automatic voltage regulator, so that the alternating current automatic voltage regulator obtains excitation power sources from the direct current auxiliary winding and the alternating current auxiliary winding of the alternating current generator stator, and measurement feedback signals are respectively from the output ends of the alternating current generator and the direct current generator;
a current transformer is sleeved on one phase of an alternating current input end of the external rectifier of the double 12 pulse wave direct current output, and an output signal of the current transformer is connected with a direct current automatic voltage regulator through a direct current voltage drop compensation circuit;
the magnetic steel on the pole iron core of the alternating current exciter stator is used for excitation, when the motor is dragged by the dragging machine and has a certain rotating speed, the 8-pole armature winding of the alternating current exciter rotor generates a certain three-phase symmetrical potential, the certain three-phase symmetrical potential is rectified into direct current by the first rectifier and then is supplied to the rotor excitation winding of the alternating current generator, so that potential is simultaneously generated on the three-phase alternating current main output winding and two sets of alternating current auxiliary windings of the alternating current generator stator, the potential is supplied to the working voltage of the alternating current automatic voltage regulator, and the alternating current automatic voltage regulator controls the magnetic field of the 8-pole excitation winding of the exciter stator, so that the three-phase alternating current main output winding of the alternating current generator stator rapidly establishes rated voltage; meanwhile, a direct current automatic voltage regulator for exciting the direct current generator also starts to work, and controls the 4-pole exciting winding of the alternating current exciter stator to enable the 4-pole armature winding of the exciter rotor to generate three-phase symmetrical potential, the three-phase symmetrical potential is rectified into direct current through a second rectifier, excitation is provided for the rotor exciting winding of the direct current generator, and therefore rated voltage is output at the 2 groups of output ends of the direct current generator at the same time.
The invention can be provided with the threading hole on the rotating shaft, the threading hole is led out from the other side of the bearing after passing through one end part of the rotating shaft on one side of the bearing, the outgoing lines of the first rectifier and the second rectifier are respectively connected with the exciting winding of the alternating current generator rotor after passing through the threading hole, and the outgoing lines of the second rectifier are connected with the exciting winding of the direct current generator rotor so as to achieve the effect of compact wiring.
The fan can be arranged at the output end of the rotating shaft, so that when the generator works normally, cooling air enters from the rear end of the generator and sequentially passes through the exciter stator, the alternating current generator stator and the direct current generator stator, and then is discharged from the air outlet of the transition joint through the fan, thereby achieving the effect of cooling.
The invention can be provided with a transition joint at the front end of the engine base, one end of the transition joint is connected with the engine base through a spigot, and the other end is connected with the spigot and the mounting hole which are matched with the towing machine.
The laminated coupling can be arranged on the rotating shaft at the front end of the fan, the outer circular surface of the laminated coupling is matched with the inner circular surface of the spigot of the towing machine, the rotating center of the rotating shaft of the generator is ensured to be basically consistent with that of the towing machine, and the laminated coupling transmits torque by virtue of friction force between the laminated coupling and an installation plane on the rotating shaft.
According to the invention, the first rectifier and the second rectifier respectively adopt three-phase silicon rotary bridge rectifiers so as to resist the action of centrifugal force in the high-speed rotation process.
By adopting the structure, the direct current generator rotor, the alternating current generator rotor and the exciter rotor share the same rotating shaft in the same engine base cavity, and the exciter adopts a doubly pole type excitation mode to arrange 2 sets of windings in one iron core, and the rotating shaft is rotated, so that one exciter iron core can realize the functions of two exciters, the double-current generator realizes self-excitation starting, the structure is compact, the motor length is greatly shortened, the space occupation area is reduced, and the cost of equipment is reduced; simultaneously, the direct current generator rotor and the alternating current generator rotor generate respective magnetic fields, the magnetic fields are mutually independent in electromagnetic structure, the alternating current main output and the direct current main output are mutually noninterfere, the effects of no interference of an excitation source and stable performance are achieved, the direct current output adopts two-way 12 pulse wave rectification, and the direct current power supply can be used in parallel or in series after being rectified and output, so that the power supply characteristic is flexible; the alternating current output and the direct current output of the motor work simultaneously, and in addition, the voltage of the output end can be always kept to reach the required value because the alternating current output and the direct current output are both provided with voltage drop compensation circuits. By adopting the structure, the invention has the advantages of simple structure, flexible power supply characteristic, no interference of the excitation source, stable performance, capability of realizing the simultaneous power supply of an alternating current power supply and a direct current power supply on one motor, and the like.
Drawings
Fig. 1 is an electrical schematic of the present invention.
Fig. 2 is a schematic structural view of the present invention.
Fig. 3 is a schematic diagram of a dc winding in the present invention.
Reference numerals: the motor comprises a transition joint 1, a laminated coupler 2, a fan 3, a machine base 4, a direct-current generator stator 5, a direct-current generator rotor 6, a rotating shaft 7, an alternating-current generator stator 8, an alternating-current generator rotor 9, an end cover 10, an exciter stator 11, an exciter rotor 12, a bearing 14, direct-current windings 15, 16, 17 and 18, rectifiers 19-1, 19-2, 19-3 and 19-4, direct-current outputs 20-1 and 20-2, an alternating-current generator stator winding 21, an exciter rotor 4-pole armature winding 22, an exciter rotor 8-pole armature winding 23, a direct-current automatic voltage regulator 25, an alternating-current automatic voltage regulator 26, a direct-current voltage drop compensation circuit 27, an alternating-current voltage drop compensation circuit 28, an alternating-current auxiliary winding 30 and an alternating-current auxiliary winding 31.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in the drawings, a double 12 pulse wave double current brushless generator mainly comprises a machine base 4, a direct current generator stator 5, a direct current generator rotor 6, a rotating shaft 7, an alternating current generator stator 8, an alternating current generator rotor 9, an end cover 10, an exciter stator 11, an exciter rotor 12, a bearing 14, a first rectifier 19-1, a second rectifier 19-2 and a control system, and is characterized in that the direct current generator rotor 6, the alternating current generator rotor 9, a bearing 14 and the exciter rotor 12 are fixedly arranged on the rotating shaft 7 in a cavity of the machine base 4 from front to back in sequence, so that the direct current generator rotor 6, the alternating current generator rotor 9 and the exciter rotor 12 share one rotating shaft 7, the direct current generator stator 5, the alternating current generator stator 8, the end cover 10 and the exciter stator 11 are fixedly arranged on the inner wall of the machine base 4 from front to back in sequence, and in order to facilitate the installation, the exciter stator can be fixedly arranged on connecting ribs of the end cover
The circumference of the outer ring of the DC generator rotor 6 is embedded with exciting windings of the DC generator rotor 6, the current of the exciting windings of the DC generator rotor 6 is controlled by a control system, the DC generator stator 5 is sleeved with the DC generator rotor 6, four groups of DC windings 15 and 16 with 30 degrees of phase difference between every two groups of DC windings, and a DC winding 17 and a DC winding 18 are uniformly distributed on the circumference of the inner ring of the DC generator stator 5, the embedded wires of the DC windings are embedded in a 4-set winding overlapping mode, namely 4 layers of windings are embedded from the bottom to the notch of each stator slot, 1 wire of each set of winding is sequentially wound on 1, 2, 3 and 4 layers of adjacent 4 slots of the stator, 1 zero line outgoing wire and 1 live wire outgoing from each stator slot, all the zero line outgoing wires in the stator slots are connected into neutral points, the four groups of outgoing wires of every two groups of phase difference 30 degrees of DC windings outgoing wires outgoing from each two groups of stator slots are respectively rectified by a rectifier bridge and then are connected in parallel to form double 12 direct current output pulses;
the alternating current generator comprises an alternating current generator stator 8, an alternating current generator rotor 9, an alternating current generator stator winding, a control system and an alternating current generator rotor 9, wherein the alternating current generator stator 8 is sleeved with the alternating current generator rotor 9, an alternating current generator stator winding is embedded in the circumference of an inner ring of the alternating current generator stator 8, the output end of the alternating current generator stator winding is connected with the control system, an exciting winding of the alternating current generator rotor is embedded in the circumference of an outer ring of the alternating current generator rotor 9;
the outer ring of the bearing 14 is fixedly connected with the end cover 10 through a bearing chamber arranged on the end cover, so that the bearing is supported by the end cover;
the exciter stator 11 is sleeved with the exciter rotor 12, a first rectifier 19-1 and a second rectifier 19-2 are fixedly arranged on the outer end face of the exciter rotor 12, 2 layers of armature windings are embedded in the circumference of the outer ring of the exciter rotor, each 2 layers of armature windings comprise 8-pole armature windings and 4-pole armature windings, the 4-pole armature windings and the 8-pole armature windings are in insulating contact and are arranged along the axial direction of the exciter rotor, each 2 convex teeth of the inner ring of the exciter stator are wound with 4-pole exciting windings, one convex tooth in the 4-pole exciting windings is wound with 8-pole exciting windings, so that the 4-pole exciting windings induce potentials only on the 4-pole armature windings, the 8-pole exciting windings induce potentials only on the 8-pole armature windings, the 4-pole exciting windings and the 8-pole armature windings are independent of each other in an electromagnetic structure and do not interfere with each other, the 8-pole armature windings are connected with the outgoing line of the generator rotor through the first rectifier 19-1, and the 4-pole exciting windings are connected with the second outgoing line of the 2-pole exciting windings through the outgoing line of the rectifier 2-pole exciting windings.
The stator winding of the alternating current generator comprises a three-phase alternating current main output winding 21, an auxiliary winding 31 for the alternating current generator and an auxiliary winding 30 for the direct current generator, wherein the three-phase alternating current main output winding is sequentially embedded at the bottom position of each slot of the inner ring of the stator, the auxiliary winding for the alternating current generator and the auxiliary winding for the direct current generator are respectively symmetrically arranged on the circumference of the stator and are sequentially embedded at the notch positions of the slots of the inner ring of the stator, and the number of the slots of the stator occupied by the auxiliary winding for the alternating current generator and the auxiliary winding for the direct current generator on the inner ring of the stator is respectively more than or equal to a multiple of 3 and less than half of the total slot number.
In the embodiment shown in fig. 3, the dc windings 15, 16, 17, 18 of the present invention are embedded in dc stator slots, each stator slot has 1 neutral wire and 1 live wire outgoing wire, the dc stator of the present invention has 24 neutral wires and 24 live wires in the circumferential direction, wherein the 12 groups of neutral wires are connected together into 2 star points, 8 groups of live wires, wherein the 2 groups of live wires with the numbers 1U1, 1V1, 1W1, the 2 groups of live wires with the numbers 1U2, 1V2, 1W2, the 2 groups of live wires with the numbers 2U1, 2V1, 2W1, the 2 groups of live wires with the numbers 2U2, 2V2, 2W2, the numbers 1U1, 1V1, 1W2, and the live wires with the numbers 1U2, 1V2, 1W2 differ by 30 ° in phase difference between the live wires, the phases of the reference numbers (2U 1, 2V1 and 2W 1) and the reference numbers (2U 2, 2V2 and 2W 2) are mutually different by 30 degrees, the winding 1U1 is taken as an example for unfolding and describing, the directions from the bottom of the groove to the notch are defined as 1, 2, 3 and 4 layers, the live wire end of the 1 st wire of the winding 1U1 sequentially bypasses the second layer of the second groove, the third layer of the third groove and the fourth layer of the fourth groove in the clockwise direction at the 1 st layer of the corresponding stator groove, and a zero wire end is led out from the fourth groove, and similarly, the live wire end of the first wire of the 1U2 sequentially winds the first layer of the second groove of the third groove of the 1U1 and the third layer of the fourth groove of the 1U1, and the zero wire end of the tail end is led out from the fourth layer of the first groove of the 1V 1; the live wire end of the first wire of 2U1 corresponds to the first layer of the second slot of 1U2, then the second layer of the third slot of 1U2 and the third layer of the fourth slot of 1U2 are sequentially wound, the zero wire end of the tail end is led out from the fourth layer of the first slot of 1V2, and the other windings are arranged according to the method, so that the mutual inductance and self inductance of each winding are balanced by the arrangement method, the consistency of the output voltage amplitude is ensured, and the four groups of output voltage values of the direct current windings are equal; in fig. 3, the fire wire ends are 1 group 3 symmetrical windings with the numbers of 1U1, 1V1 and 1W1, the fire wire ends are 1 group 3 symmetrical windings with the numbers of 1U2, 1V2 and 1W2, the mutual difference between each group of symmetrical windings is 120 degrees, the two groups of symmetrical windings with the numbers of 1U1 and 1U2 are different by 30 degrees, all zero wire ends of the 2 groups of windings are connected into neutral points, and the fire wire end rectifier bridges are respectively rectified by the rectifier bridges and then output 12 pulse direct current in parallel; similarly, 3 symmetrical windings with the fire wire end being numbered as 2U1, 2V1 and 2W1 and 3 symmetrical windings with the fire wire end being numbered as 2U2, 2V2 and 2W2 are also different in electrical angle by 30 degrees, all zero line ends of the 2 symmetrical windings are connected into a neutral point, and the fire wire ends are respectively rectified by a rectifier bridge and then output in parallel with the other group of 12 pulse direct current output.
The control system of the present invention includes a dc automatic voltage regulator 25, an ac automatic voltage regulator 26, a dc voltage drop compensation circuit 27 and an ac voltage drop compensation circuit 28, wherein the structures of the dc automatic voltage regulator 25, the ac automatic voltage regulator 26, the dc voltage drop compensation circuit 27 and the ac voltage drop compensation circuit 28 are in the prior art, the models thereof are ZLW model and ZPWT model respectively, which are not described in detail, the output voltage of the present invention is automatically regulated by the dc automatic voltage regulator, the ac automatic voltage regulator, the dc voltage drop compensation circuit and the ac voltage drop compensation circuit to be constant,
the 2 phases of the three-phase AC output winding 21 of the stator winding of the alternating current generator are respectively and directly connected with the AC automatic voltage regulator 26, the other 1 phases are connected with the AC automatic voltage regulator 26 through a current transformer passing through the phase and an AC voltage drop compensation line 28, the auxiliary winding 31 for alternating current of the stator winding of the alternating current generator is connected with the AC automatic voltage regulator 26, the auxiliary winding 30 for direct current of the stator winding of the alternating current generator is connected with the DC automatic voltage regulator 25, so that the AC automatic voltage regulator 26 obtains exciting power sources from the auxiliary winding 30 for direct current and the auxiliary winding 31 for alternating current of the stator 21, measurement feedback signals are respectively from the output ends of the alternating current generator and the direct current generator,
the output of a current transformer sleeved on one phase of the alternating current side is connected with a direct current automatic voltage regulator 25 through a direct current voltage drop compensation circuit 27, magnetic steel on the pole core of an alternating current exciter stator is used for excitation, when a motor is dragged by a dragging machine and has a certain rotating speed, an 8-pole armature winding of an alternating current exciter rotor generates a certain three-phase symmetrical potential, the potential is rectified into direct current through a first rectifier 19-1 and then is supplied to a rotor excitation winding of an alternating current generator, thus, potential is simultaneously generated on a three-phase alternating current main output winding and two sets of alternating current auxiliary windings of the alternating current generator stator, the potential is supplied to the working voltage of the alternating current automatic voltage regulator, and the alternating current automatic voltage regulator controls the magnetic field size of the 8-pole excitation winding of the exciter stator, so that the three-phase alternating current main output winding of the alternating current generator stator rapidly builds rated voltage; meanwhile, a direct current automatic voltage regulator for exciting the direct current generator also starts to work, and controls the 4-pole exciting winding of the alternating current exciter stator to enable the 4-pole armature winding of the exciter rotor to generate three-phase symmetrical potential, the three-phase symmetrical potential is rectified into direct current through a second rectifier, excitation is provided for the rotor exciting winding of the direct current generator, and therefore rated voltage is output at the 2 groups of output ends of the direct current generator at the same time.
The invention can be provided with the threading hole on the rotating shaft, the threading hole is led out from the other side of the bearing after passing through one end part of the rotating shaft on one side of the bearing, and after the lead wires of the first rectifier 19-1 and the second rectifier 19-2 respectively pass through the threading holes, the lead wires of the first rectifier 19-1 are connected with the exciting winding of the alternating current generator rotor, and the lead wires of the second rectifier 19-2 are connected with the exciting winding of the direct current generator rotor, so as to achieve the effect of compact wiring.
The fan 3 is arranged at the output end of the rotating shaft 7 in the machine base 4, so that cooling air enters from the rear end of the generator and sequentially passes through the exciter stator 11, the alternating-current generator stator 8 and the direct-current generator stator 5 and is discharged from the air outlet of the transition section 1 through the fan 3 when the generator works normally, and the cooling effect is achieved.
According to the invention, the transition joint 1 can be arranged at the front end of the engine base 4, one end of the transition joint 1 is connected with the engine base 4 through the spigot, and the other end is connected with the spigot and the mounting hole which are matched with the towing machine.
According to the invention, the laminated coupling 2 can be arranged on the rotating shaft 7 at the front end of the fan 3, the outer circular surface of the laminated coupling 2 is matched with the inner circular surface of the spigot of the towing machine, the rotating center of the rotating shaft of the generator is ensured to be basically consistent with that of the towing machine, and the laminated coupling 2 transmits torque by virtue of friction force between the laminated coupling and an installation plane on the rotating shaft.
The first rectifier and the second rectifier respectively adopt a three-phase silicon rotary bridge rectifier 13 so as to resist the action of centrifugal force in the high-speed rotation process.
The working principle of the invention is as follows:
when the motor is driven to rotate by a prime motor, the motor is excited by virtue of the magnetic steel on the magnetic pole core of the stator of the alternating-current exciter, the 8-pole armature winding of the rotor of the alternating-current exciter generates certain three-phase symmetrical potential, and the certain three-phase symmetrical potential is rectified into direct current by the first rectifier and then is supplied to the rotor exciting winding of the alternating-current generator, so that potential is simultaneously generated on the three-phase alternating-current main output winding and two sets of alternating-current auxiliary windings of the stator of the alternating-current generator, the potential is supplied to the working voltage of the alternating-current automatic voltage regulator, and the alternating-current automatic voltage regulator controls the magnetic field of the 8-pole exciting winding of the stator of the exciter, so that the three-phase alternating-current main output winding of the stator of the alternating-current generator rapidly builds rated voltage; meanwhile, a direct current automatic voltage regulator for exciting the direct current generator also starts to work, and controls the 4-pole exciting winding of the alternating current exciter stator to enable the 4-pole armature winding of the exciter rotor to generate three-phase symmetrical potential, the three-phase symmetrical potential is rectified into direct current through a second rectifier, excitation is provided for the rotor exciting winding of the direct current generator, and therefore rated voltage is output at the 2 groups of output ends of the direct current generator at the same time.
When in load, the stator winding of the alternating current generator feeds back a signal through the alternating current voltage drop compensation circuit, the stator winding of the direct current generator feeds back the signal through the direct current voltage drop compensation circuit, and the actual voltage output by the alternating current generator receives the feedback signal and is processed by the alternating current automatic voltage regulator to control the alternating current voltage output by the generator to be constant; the actual voltage output by the direct current generator receives the feedback signal and is processed by the direct current automatic voltage regulator to control the direct current voltage output by the generator to be constant.
By adopting the structure, the direct current generator rotor, the alternating current generator rotor and the exciter rotor share the same rotating shaft in the same engine base cavity, and the exciter adopts a doubly pole type excitation mode to arrange 2 sets of windings in one iron core, and the rotating shaft is rotated, so that one exciter iron core can realize the functions of two exciters, the double-current generator realizes self-excitation starting, the structure is compact, the motor length is greatly shortened, the space occupation area is reduced, and the cost of equipment is reduced; simultaneously, the direct current generator rotor and the alternating current generator rotor generate respective magnetic fields, the magnetic fields are mutually independent in electromagnetic structure, the alternating current main output and the direct current main output are mutually noninterfere, the effects of no interference of an excitation source and stable performance are achieved, the pole numbers of the alternating current rotor and the pole numbers of the direct current rotor can be respectively set according to the frequencies required by alternating current and direct current, the direct current output adopts two-way 12 pulse wave rectification, and the direct current power supply can be used in parallel or in series after being rectified and output, so that the power supply characteristic is flexible; the alternating current output and the direct current output of the motor work simultaneously, and in addition, the voltage of the output end can be always kept to reach the required value because the alternating current output and the direct current output are both provided with voltage drop compensation circuits. .
Claims (9)
1. The double-12-pulse double-current brushless generator mainly comprises a base, a direct-current generator stator, a direct-current generator rotor, a rotating shaft, an alternating-current generator stator, an alternating-current generator rotor, an end cover, an exciter stator, an exciter rotor, a bearing, a rotary rectifier and a control system, and is characterized in that the direct-current generator rotor, the alternating-current generator rotor, the bearing and the exciter rotor are fixedly arranged on the rotating shaft in a cavity of the base from front to back in sequence, and the direct-current generator stator, the alternating-current generator stator, the end cover and the exciter stator are fixedly arranged on the inner wall of the base from front to back in sequence;
the circumference of the outer ring of the DC generator rotor is embedded with exciting windings of the DC generator rotor, the current of the exciting windings of the DC generator rotor is controlled by a control system, the DC generator stator is sleeved with the DC generator rotor, 4 groups of DC windings with the phase difference of 30 degrees are uniformly distributed on the circumference of the inner ring of the DC generator stator, the DC winding embedded wires are embedded in a 4-set winding overlapping mode, namely 4 layers of windings are embedded from the bottom of the slot to the notch of each stator slot, and 1 wire of each set of winding is wound on 1, 2, 3, 4 layers of adjacent 4 slots of the stator in turn, namely, the winding labels of wires of the same layer in adjacent stator slots are different, each stator slot is provided with 1 zero wire outgoing line and 1 live wire outgoing line, all zero wire outgoing lines are connected into a neutral point, and the live wire outgoing lines of every two groups of four groups of direct current windings with the phase difference of 30 DEG are respectively rectified by a rectifier bridge and then are output in parallel to form double 12 pulse wave direct current output;
the alternating current generator stator is sleeved with the alternating current generator rotor, the alternating current generator stator winding is embedded on the circumference of the inner ring of the alternating current generator stator, the output end of the alternating current generator stator winding is connected with a control system, the circumference of the outer ring of the alternating current generator rotor is embedded with an exciting winding of the alternating current generator rotor, and the current of the exciting winding of the alternating current generator rotor is controlled by a control system;
the bearing outer ring penetrates through a bearing chamber arranged on the end cover and is fixedly connected with the end cover;
the exciting stator is sleeved with the exciting rotor, a first rectifier and a second rectifier are fixedly arranged on the outer end face of the exciting rotor, 2 layers of armature windings are embedded in the circumference of the outer ring of the exciting rotor, each 2 layers of armature windings comprise 8-pole armature windings and 4-pole armature windings, the 4-pole armature windings and the 8-pole armature windings are in insulating contact and are axially arranged along the exciting rotor, 4-pole exciting windings are wound on every 2 convex teeth of the inner ring of the exciting stator, 8-pole exciting windings are wound on one convex tooth in each 4-pole exciting winding, the 4-pole exciting windings and the 8-pole exciting windings are controlled by a control system respectively, the 8-pole armature windings are connected with the exciting windings of the alternating current generator rotor through outgoing wires of the first rectifier, and the 4-pole armature windings are connected with the exciting windings of the direct current generator rotor through outgoing wires of the second rectifier.
2. The double-12-pulse double-current brushless generator according to claim 1, wherein the stator windings of the alternating current generator comprise three-phase alternating current main output windings, auxiliary windings for the alternating current generator and auxiliary windings for the direct current generator, the three-phase alternating current main output windings are sequentially embedded at the groove bottom position of the stator inner ring groove, and the auxiliary windings for the alternating current generator and the auxiliary windings for the direct current generator are symmetrically arranged on the circumference of the stator respectively and are sequentially embedded at the groove opening position of the stator inner ring groove.
3. A double 12-pulse double-flow brushless generator according to claim 2, characterized in that the number of stator slots occupied by the auxiliary winding for an alternator and the auxiliary winding for a direct-current generator on the stator inner ring is respectively a multiple of 3 or more and less than half of the total number of slots.
4. A double 12-pulse double-current brushless generator according to claim 1, 2 or 3, characterized in that the control system comprises a direct current automatic voltage regulator, an alternating current automatic voltage regulator, a direct current voltage drop compensation circuit and an alternating current voltage drop compensation circuit, 2 phases of the three-phase alternating current output winding output ends of the alternating current generator stator winding are respectively and directly connected with the alternating current automatic voltage regulator, the other 1 phases are connected with the alternating current automatic voltage regulator through a current transformer penetrating through the phases by the alternating current voltage drop compensation circuit, the alternating current auxiliary winding of the alternating current generator stator winding is connected with the alternating current automatic voltage regulator, the direct current auxiliary winding of the alternating current generator stator winding is connected with the direct current automatic voltage regulator, so that the alternating current automatic voltage regulator obtains exciting power sources from the direct current auxiliary winding and the alternating current auxiliary winding of the alternating current generator stator, and measurement feedback signals are respectively from the output ends of the alternating current generator and the direct current generator;
the output of the current transformer sleeved on one phase of the alternating current side is connected with the direct current automatic voltage regulator through a direct current voltage drop compensation circuit.
5. The double-12-pulse double-current brushless generator according to claim 4, wherein the rotating shaft is provided with a threading hole, the threading hole is led out from a shaft hole at the other side of the bearing after passing through one end part of the rotating shaft at one side of the bearing, the outgoing lines of the first rectifier and the second rectifier are respectively connected with the exciting winding of the alternator rotor after passing through the threading hole, and the outgoing line of the second rectifier is connected with the exciting winding of the alternator rotor.
6. The double 12-pulse double-flow brushless generator according to claim 1 or 5, wherein a fan is installed at the output end of the rotating shaft, and cooling air enters from the rear end of the generator and is discharged from an air outlet of the transition joint through the fan after sequentially passing through the exciter stator, the alternator stator and the direct current generator stator when the generator is in normal operation.
7. The double-12-pulse double-current brushless generator according to claim 6, wherein a transition joint is installed at the front end of the engine base, one end of the transition joint is connected with the engine base through a spigot, and the other end of the transition joint is connected with a spigot and a mounting hole which are matched with the towing machine.
8. The double 12-pulse double-flow brushless generator of claim 7, wherein a laminated coupling is arranged on a rotating shaft at the front end of the fan, and an outer circular surface of the laminated coupling is matched with an inner circular surface of a spigot of the towing machine.
9. The dual 12-pulse, dual-current, brushless generator of claim 5, wherein said first rectifier and said second rectifier are three-phase silicon rotary bridge rectifiers, respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811599200.8A CN109450202A (en) | 2018-12-26 | 2018-12-26 | Double 12 pulse wave double fluid brushless generators |
| CN2018115992008 | 2018-12-26 |
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| CN110429776B true CN110429776B (en) | 2024-03-19 |
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| CN201811599200.8A Pending CN109450202A (en) | 2018-12-26 | 2018-12-26 | Double 12 pulse wave double fluid brushless generators |
| CN201910716796.3A Active CN110429776B (en) | 2018-12-26 | 2019-08-05 | Double 12 pulse wave double flow brushless generator |
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| CN110380575B (en) * | 2019-07-02 | 2021-08-13 | 哈尔滨工程大学 | Self-excited synchronous generator with radial-flow type heat-dissipation wind wheel |
| CN112072972A (en) * | 2020-09-16 | 2020-12-11 | 湖南湘电动力有限公司 | Power supply method for automatic voltage regulator of synchronous generator |
| CN112421837B (en) * | 2020-11-10 | 2022-07-26 | 哈尔滨电气动力装备有限公司 | Stator winding structure of AC excitation generator on large brushless motor |
| CN113489271B (en) * | 2021-06-21 | 2022-06-10 | 南京航空航天大学 | AC-DC hybrid excitation type motor power generation system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1719699A (en) * | 2005-07-15 | 2006-01-11 | 泰豪科技股份有限公司 | Coarmature type AC-DC brushless electric generator |
| CN2796229Y (en) * | 2004-12-29 | 2006-07-12 | 泰豪科技股份有限公司 | Low voltage multiple phase rectifying brushless motor |
| CN101355279A (en) * | 2008-08-13 | 2009-01-28 | 泰豪科技股份有限公司 | Double pole type brushless double-flow generator |
| CN102355107A (en) * | 2011-09-21 | 2012-02-15 | 赵文钦 | Integral salient pole intermediate frequency brushless synchronous generator |
| JP2013236480A (en) * | 2012-05-09 | 2013-11-21 | Toshiba Corp | Induction brushless ac excitation system |
| WO2015040529A2 (en) * | 2013-09-19 | 2015-03-26 | Marelli Motori S.P.A. | Hybrid operating synchronous electrical machine |
| CN209948920U (en) * | 2018-12-26 | 2020-01-14 | 山东德欣电机有限公司 | Double 12 pulse wave double current brushless generator |
-
2018
- 2018-12-26 CN CN201811599200.8A patent/CN109450202A/en active Pending
-
2019
- 2019-08-05 CN CN201910716796.3A patent/CN110429776B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2796229Y (en) * | 2004-12-29 | 2006-07-12 | 泰豪科技股份有限公司 | Low voltage multiple phase rectifying brushless motor |
| CN1719699A (en) * | 2005-07-15 | 2006-01-11 | 泰豪科技股份有限公司 | Coarmature type AC-DC brushless electric generator |
| CN101355279A (en) * | 2008-08-13 | 2009-01-28 | 泰豪科技股份有限公司 | Double pole type brushless double-flow generator |
| CN102355107A (en) * | 2011-09-21 | 2012-02-15 | 赵文钦 | Integral salient pole intermediate frequency brushless synchronous generator |
| JP2013236480A (en) * | 2012-05-09 | 2013-11-21 | Toshiba Corp | Induction brushless ac excitation system |
| WO2015040529A2 (en) * | 2013-09-19 | 2015-03-26 | Marelli Motori S.P.A. | Hybrid operating synchronous electrical machine |
| CN209948920U (en) * | 2018-12-26 | 2020-01-14 | 山东德欣电机有限公司 | Double 12 pulse wave double current brushless generator |
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| CN110429776A (en) | 2019-11-08 |
| CN109450202A (en) | 2019-03-08 |
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