CN209948920U - Double 12 pulse wave double current brushless generator - Google Patents
Double 12 pulse wave double current brushless generator Download PDFInfo
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- CN209948920U CN209948920U CN201921252973.9U CN201921252973U CN209948920U CN 209948920 U CN209948920 U CN 209948920U CN 201921252973 U CN201921252973 U CN 201921252973U CN 209948920 U CN209948920 U CN 209948920U
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
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Abstract
The utility model discloses a double 12 pulse wave double current brushless generator, which mainly comprises a frame, a DC generator stator, a DC generator rotor, a rotating shaft, an AC generator stator, an AC 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 DC generator rotor, the AC generator rotor, the bearing and the exciter rotor are fixedly arranged on the rotating shaft in a frame cavity from front to back in sequence, the DC generator stator, the AC generator stator, the end cover and the exciter stator are fixedly arranged in the frame from front to back in sequence, 4 sets of 3-phase windings are evenly embedded in a groove of an inner circle of the DC generator stator, wherein 2 sets of winding phase angles are 0 degree electrical angle, in addition, the phase positions of 2 sets of windings are 30 degree electrical angles, 4 sets of windings form 4 sets of DC output through the rectifier respectively, the utility model has the advantages of simple structure, flexible power supply characteristic, no interference of excitation source, stable performance and the like.
Description
Technical Field
The utility model belongs to the technical field of special type motor manufacturing and specifically relates to a provide a two 12 pulse wave double current brushless generator.
Background
At present, the main modes for realizing alternating current and direct current power supply of the airplane ground power supply vehicle are 2 types as follows: one is that the internal combustion engine drives a three-phase AC generator to generate an AC power supply, and the DC power supply is formed by the rectification after the AC power supply is stepped down by a transformer. The AC and DC power supply mode has the following disadvantages that the output voltage of the DC power supply has no automatic regulating function, only has a fixed DC voltage grade, the ripple wave of the DC partial voltage is large, the AC power supply and the DC power supply can not be used simultaneously, and the AC and DC power supply mode is not suitable for the working condition that the AC and the DC need to supply power simultaneously.
The other type is a double-current brushless generator with 2 alternating-current exciters, the generator comprises an alternating-current main generator and a direct-current main generator, the alternating-current main generator is provided with one exciter, the direct-current main generator is provided with one exciter, the two generators are generators with the same pole number, although independent alternating-current and direct-current power supply can be realized, the structure is complex, and the excitation source interference is large.
Disclosure of Invention
The utility model aims at solving the not enough of above-mentioned prior art, provide a compact structure, power supply characteristic is nimble, the excitation source is noiseless, stable performance, area occupied is little, can realize the two 12 pulse wave double current brushless generator of the alternating current power supply and the direct current power supply simultaneous power supply on a motor.
The utility model provides a technical means that above-mentioned technical problem adopted is:
a double 12-pulse-wave 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 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 installed on the rotating shaft in a 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 installed on the inner wall of the base from front to back in sequence;
the direct current generator rotor outer ring circumference is embedded with a direct current generator rotor excitation winding, the direct current generator rotor excitation winding current is controlled by a control system, a direct current generator stator is sleeved with the direct current generator rotor, four groups of direct current windings with the phase difference of 30 degrees are uniformly embedded in the direct current generator stator inner ring circumference, the direct current winding embedded lines are embedded in a 4-set winding overlapping mode, namely 4 layers of windings are embedded in each stator slot from the slot bottom to the slot opening, 1 lead of each group of windings is sequentially wound on 1 layer, 2 layer, 3 layer and 4 layer of the adjacent 4 slots of the stator, namely the winding labels of the same layer of lead in the adjacent stator slots are different, 1 zero line lead and 1 live line lead are arranged in each stator slot, all the zero line leads in the stator slots are connected into a neutral point, and the live line leads of the four groups of direct current windings with the phase difference of 30 degrees in each group of phase difference in the stator slots are respectively rectified by a rectifier bridge and then output in parallel to form double 12 pulse wave direct current windings Outputting the stream;
the alternating current generator stator is sleeved with the alternating current generator rotor, an 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, an exciting winding of the alternating current generator rotor is embedded on the circumference of the outer ring of the alternating current generator rotor, and the current of the exciting winding of the alternating current generator rotor is controlled by the 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 as to be beneficial to supporting the bearing through the end cover;
the exciter stator is sleeved with the exciter rotor, a first rectifier and a second rectifier are fixedly arranged on the outer end face of the exciter rotor, 2 layers of armature windings are embedded on 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 insulation contact and are axially arranged along the exciter rotor, 4-pole excitation windings are wound on every 2 convex teeth of the inner ring of the exciter stator, 8-pole excitation windings are wound on one convex tooth in the 4-pole excitation windings, so that the 4-pole excitation windings are only in induced potential of the 4-pole armature windings, the 8-pole excitation windings are only in induced potential of the 8-pole armature windings, the 4-pole excitation windings and the 8-pole excitation windings are respectively controlled by a control system, and the induced potentials of the 4-pole armature windings and the 8-pole armature windings are mutually independent, the pole 8 armature windings are connected with the exciting windings of the alternating current generator rotor through the outgoing lines of the first rectifier, and the pole 4 armature windings are connected with the exciting windings of the direct current generator rotor through the outgoing lines 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 position of a stator inner ring groove;
the auxiliary winding for the alternating current generator and the auxiliary winding for the direct current generator are symmetrically arranged on the circumference of the stator respectively, and the number of the stator slots 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 a half of the total number of the slots.
The control system of the utility model comprises a DC automatic voltage regulator, an AC automatic voltage regulator, a DC voltage drop compensation circuit and an AC voltage drop compensation circuit, and the output voltage of the utility model 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, so that the output voltage is constant;
2 phases of output ends of three-phase alternating current output windings 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 the phase by 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 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 output ends of the alternating current generator and the direct current generator;
a current transformer is sleeved on one phase of the alternating current input end of the external rectifier with double 12-pulse direct current output, and an output signal of the current transformer is connected with the direct current automatic voltage regulator through a direct current voltage drop compensation circuit;
the magnetic steel on the magnetic pole core of the AC exciter stator is used for excitation, when the motor is dragged by a dragging machine and has a certain rotating speed, 8-pole armature windings of the AC exciter rotor generate a certain three-phase symmetrical potential which is rectified into direct current by a first rectifier and then supplied to a rotor excitation winding of an AC generator, so that potentials are simultaneously generated on a three-phase AC main output winding and two sets of AC auxiliary windings of the AC generator stator, the potentials are supplied to an AC automatic voltage regulator for working voltage, and the AC automatic voltage regulator controls the size of a magnetic field of the 8-pole excitation winding of the exciter stator, so that the three-phase AC main output winding of the AC generator stator rapidly establishes rated voltage; at the same time, the DC automatic voltage regulator for exciting the DC generator starts to work, controls the 4-pole exciting winding of the AC exciter stator to generate three-phase symmetrical potential by the 4-pole armature winding of the exciter rotor, rectifies the potential into DC by the second rectifier, and provides excitation for the rotor exciting winding of the DC generator, thereby outputting rated voltage at 2 groups of output ends of the DC generator simultaneously.
The utility model discloses can be equipped with the through wires hole in the pivot, the through wires hole is drawn forth at the opposite side of bearing after passing from the pivot tip of bearing one side, the lead-out wire of first rectifier and second collator is connected with the excitation winding of alternator rotor after passing the through wires hole respectively, the lead-out wire of second rectifier is connected with the excitation winding of alternator rotor to reach the compact effect of wiring.
The utility model discloses can the fan is installed to the pivot output to make the generator normal during operation, the cooling air gets into in proper order through the air outlet discharge of fan from the transition festival behind exciter stator, alternator stator, the direct current generator stator by the rear end of generator, in order to reach refrigerated effect.
The utility model discloses can the transition festival is installed to the frame front end, transition festival one end is passed through the tang and is connected with the frame, and the other end is connected with the tang and the mounting hole of dragging machine adaptation.
The utility model discloses can be equipped with lamination formula shaft coupling in the pivot of fan front end, the outer disc of lamination formula shaft coupling and the interior disc fit of drag machine tang guarantee that generator shaft center of rotation is unanimous basically with drag machine center of rotation, and the lamination formula shaft coupling relies on and transmits the moment of torsion with the pivot between the mounting surface.
First rectifier and second rectifier adopt three-phase silicon rotary bridge rectifier respectively to reach the effect of resisting centrifugal force at high-speed rotatory in-process.
By adopting the structure, the utility model, through sharing a rotating shaft with the DC generator rotor, the AC generator rotor and the exciter rotor in the same frame cavity, and the exciter adopts a double-pole excitation mode to arrange 2 sets of windings in an iron core, and rotating a rotating shaft, the function of two exciters can be realized by one exciter iron core, so that the double-current generator realizes self-excitation starting, the structure is compact, the length of the motor is greatly shortened, the occupied space area is also reduced, and the cost of the equipment is reduced; meanwhile, the direct current generator rotor and the alternating current generator rotor can simultaneously generate respective magnetic fields which are mutually independent on an electromagnetic structure, the alternating current main output and the direct current main output are not interfered with each other, the effects of no interference of an excitation source and stable performance are achieved, the direct current output adopts double-path 12-pulse rectification, and a 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 effect of simultaneous working of alternating current output and direct current output of one motor is realized, and in addition, because the alternating current output and the direct current output are both provided with voltage drop compensation circuits, the voltage of the output end can be always kept to reach a required value. The utility model discloses owing to adopt above-mentioned structure, have simple structure, the power supply characteristic is nimble, the excitation source is noiseless, the stable performance, can realize advantages such as alternating current power supply and direct current power supply power simultaneously on a motor.
Drawings
Fig. 1 is an electrical schematic diagram of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a schematic diagram of the dc winding of the present invention.
Reference numerals: the direct-current motor comprises a transition joint 1, a laminated coupling 2, a fan 3, a 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, a direct-current auxiliary winding 30 and an alternating-current auxiliary winding 31.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in the attached drawings, a double 12-pulse wave double-current brushless generator mainly comprises a 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, the bearing 14 and the exciter rotor 12 are fixedly arranged on the rotating shaft 7 in a cavity of the 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 to rotate, 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 base 4 from front to back in sequence, and for convenient installation, the utility model discloses can be with fixed with the excitation machine stator on the splice bar of end cover
The direct current generator rotor 6 outer ring circumference is embedded with the excitation winding of direct current generator rotor 6, the current of the excitation winding of direct current generator rotor 6 is controlled by a control system, direct current generator stator 5 is in sleeve joint with direct current generator rotor 6, direct current generator stator 5 inner ring circumference is embedded with four groups and every two groups of direct current winding 15 and direct current winding 16 with the phase difference of 30 degrees, direct current winding 17 and direct current winding 18, direct current winding embedding adopts 4 sets of winding overlapping mode, namely, 4 layers of windings are embedded from the groove bottom to the notch in each stator groove, and 1 lead of each set of windings is sequentially wound on 1, 2, 3 and 4 layers of adjacent 4 grooves of the stator, 1 zero line outgoing line and 1 live line outgoing line are arranged in each stator groove, all the zero line outgoing lines in the stator grooves are connected into a neutral point, and the live lines of four groups of direct current windings with the phase difference of 30 degrees in each two groups are respectively rectified by a rectifier bridge and then connected in parallel to output Forming double 12 pulse wave DC output;
the alternating current generator stator 8 is sleeved with the alternating current generator rotor 9, an alternating current generator stator winding is embedded on the circumference of the inner ring of the alternating current generator stator 8, the output end of the alternating current generator stator winding is connected with a control system, an excitation winding of the alternating current generator rotor is embedded on the circumference of the outer ring of the alternating current generator rotor 9, and the current of the excitation winding of the alternating current generator rotor is controlled by the control system;
the outer ring of the bearing 14 penetrates through a bearing chamber arranged on the end cover to be fixedly connected with the end cover 10, 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 on the circumference of the outer ring of the exciter rotor, the 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 insulation contact and are axially arranged along the exciter rotor, 4-pole excitation windings are wound on every 2 convex teeth of the inner ring of the exciter stator, 8-pole excitation windings are wound on one convex tooth in the 4-pole excitation windings, so that the 4-pole excitation windings are only in induced potential of the 4-pole armature windings, the 8-pole excitation windings are only in induced potential of the 8-pole armature windings, the 4-pole excitation windings and the 8-pole excitation windings are respectively controlled by a control system, and the induced potentials of the 4-pole armature windings and the 8-pole armature windings are mutually independent on an electromagnetic structure, the pole 8 armature windings are connected with the exciting windings of the alternating current generator rotor through the outgoing lines of the first rectifier 19-1, and the pole 4 armature windings are connected with the exciting windings of the direct current generator rotor through the outgoing lines of the second rectifier 19-2.
Alternator stator winding includes that three-phase AC main output winding 21, auxiliary winding 31 for alternator and auxiliary winding 30 for DC generator, three-phase AC main output winding inlays in the tank bottom position in every groove of stator inner circle in proper order, auxiliary winding and for DC generator auxiliary winding symmetry setting on the stator circumference respectively for alternator, inlay in proper order and put the notch position in stator inner circle groove, and the shared stator groove number of winding is more than or equal to 3 respectively and is less than half of total groove number for alternator and auxiliary winding and for DC generator in the stator inner circle shared stator groove number.
In the embodiment shown in fig. 3, the dc windings 15, 16, 17, 18 according to the present invention are embedded in dc stator slots, each stator slot has 1 neutral wire and 1 live wire outgoing wire, the stator of the dc generator has 24 neutral wires and 24 live wires in the circumferential direction, wherein 12 groups of 1 neutral wires are connected to form 2 star points, and 8 groups of live wires are connected to form 8 groups, wherein 2 groups of live wires with the labels 1U1, 1V1, 1W1, 2 groups of live wires with the labels 1U2, 1V2, 1W2, 2 groups of live wires with the labels 2U1, 2V1, 2W1, 2 groups of live wires with the labels 2U2, 2V2, 2W2, the labels 1U1, 1V1, 1W1, and the labels 1U2, 1V live wires 9, 1W2 phase differences of 30 degrees, the labels (2U 56, W2, 863) and the labels 36867U 867, 862 degrees are different from each other by 30 degrees, we define that the directions from the bottom of the slot to the opening of the slot are 1, 2, 3 and 4 layers, the live wire end of the 1 st wire of the winding 1U1 is on the 1 st layer corresponding to the stator slot, clockwise bypasses the second layer of the second slot, the third layer of the third slot and the fourth layer of the fourth slot, and draws out the zero wire end from the fourth slot, similarly, the live wire end of the first wire of 1U2 corresponds to the first layer of the second slot of 1U1, then sequentially winds the second layer of the 1U1 third slot and the third layer of the 1U1 fourth slot, and the tail end zero wire end is drawn out from the fourth layer of the first slot of 1V 1; the live wire end of a first lead 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 wound in sequence, the tail end zero line end is led out from the fourth layer of the first slot of 1V2, and similarly, the other windings are arranged according to the method, the mutual inductance and the self-inductance of each winding are balanced by the arrangement method, the consistency of the amplitude of output voltage is ensured, and four groups of output voltage values of the direct current windings are equal; in fig. 3, the numbers of the live ends are 1U1, 1V1 and 1W1, which are 1 group of 3 symmetric windings, the numbers of the live ends are 1U2, 1V2 and 1W2, which are 1 group of 3 symmetric windings, each group of symmetric windings mutually differ by 120 ° in electrical angle, the numbers of the live ends are 1U1 and 1U2, which differ by 30 ° in electrical angle, all the neutral ends of the 2 groups of windings are connected to be a neutral point, and the live ends are connected to a rectifier bridge, which is respectively rectified by the rectifier bridge and then connected in parallel to output 12-pulse dc output; similarly, the difference between 3 symmetrical windings with the fire wire end labels of 2U1, 2V1 and 2W1 and 3 symmetrical windings with the fire wire end labels of 2U2, 2V2 and 2W2 is 30 degrees in electrical angle, similarly, all the zero line ends of the 2 groups of symmetrical windings are connected into a neutral point, and the fire wire ends are respectively rectified by a rectifier bridge and then connected in parallel to output another group of 12-pulse direct current outputs.
The control system of the utility model comprises 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, 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 the prior art, the models are respectively ZLW type and ZPWT type, which are not repeated, the output voltage of the utility model is automatically adjusted 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 make it constant,
2 phases of output ends of three-phase alternating current output windings 21 of the alternating current generator stator windings are respectively and directly connected with an alternating current automatic voltage regulator 26, the other 1 phases are connected with the alternating current automatic voltage regulator 26 through an alternating current voltage drop compensation circuit 28 by a current transformer penetrating the phase, the alternating current auxiliary windings 31 of the alternating current generator stator windings are connected with the alternating current automatic voltage regulator 26, the direct current auxiliary windings 30 of the alternating current generator stator windings are connected with the direct current automatic voltage regulator 25, so that the alternating current automatic voltage regulator 26 obtains excitation power from the direct current auxiliary windings 30 and the alternating current auxiliary windings 31 of the alternating current generator stator 21, measurement feedback signals are respectively from output ends of the alternating current generator and the direct current generator,
the output of a current transformer sleeved on one phase of the AC side is connected with a DC automatic voltage regulator 25 through a DC voltage drop compensation circuit 27 at the front end AC side of the external rectifier 19-4 with double 12-pulse DC output, magnetic steel on a stator pole core of the AC exciter 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 potential is rectified into direct current by the first rectifier 19-1 and then supplied to the rotor excitation winding of the alternating current generator, thereby simultaneously generating electric potentials on the three-phase alternating current main output winding and the two sets of alternating current auxiliary windings of the stator of the alternating current generator, the potential is supplied to the working voltage of an alternating current automatic voltage regulator, the alternating current automatic voltage regulator controls the magnetic field of an exciter stator 8 pole excitation winding, thereby the three-phase AC main output winding of the AC generator stator can quickly establish rated voltage; at the same time, the DC automatic voltage regulator for exciting the DC generator starts to work, controls the 4-pole exciting winding of the AC exciter stator to generate three-phase symmetrical potential by the 4-pole armature winding of the exciter rotor, rectifies the potential into DC by the second rectifier, and provides excitation for the rotor exciting winding of the DC generator, thereby outputting rated voltage at 2 groups of output ends of the DC generator simultaneously.
The utility model discloses can be equipped with the through wires hole in the pivot, the through wires hole is drawn forth at the opposite side of bearing after passing from the pivot tip of bearing one side, after the lead-out wire of first rectifier 19-1 and second collator 19-2 passed the through wires hole respectively, the lead-out wire of first rectifier 19-1 was connected with the excitation winding of alternator rotor, and the lead-out wire of second rectifier 19-2 is connected with the excitation winding of dc generator rotor to reach the compact effect of wiring.
The utility model discloses fan 3 is installed to 7 outputs of pivot in the frame 4 to make the generator normal during operation, the cooling air gets into in proper order through exciter stator 11, alternator stator 8, DC generator stator 5 back through fan 3 from the air outlet discharge of transition festival 1 by the rear end of generator, in order to reach refrigerated effect.
The utility model discloses can transition festival 1 is installed to frame 4 front end, 1 one end of transition festival is passed through the tang and is connected with frame 4, and the other end is connected with the tang and the mounting hole of dragging machine adaptation.
The utility model discloses can be equipped with laminated shaft coupling 2 on the pivot 7 of 3 front ends of fan, the cooperation of the outer disc of laminated shaft coupling 2 and the interior disc of drag machine tang guarantees that generator shaft center of rotation is unanimous basically with drag machine center of rotation, and laminated shaft coupling 2 relies on and transmits the moment of torsion with the pivot between the mounting surface.
First rectifier and second rectifier adopt three-phase silicon rotary bridge rectifier 13 respectively to reach the effect of resisting centrifugal force at high-speed rotatory in-process.
The utility model discloses the theory of operation:
when the utility model is driven by the prime motor to rotate, the excitation is started by the magnetic steel on the pole core of the stator of the AC exciter, the armature winding of 8 poles of the rotor of the AC exciter generates a certain three-phase symmetrical potential which is rectified into direct current by the first rectifier and then is supplied to the rotor exciting winding of the AC generator, thereby the potentials are simultaneously generated on the three-phase AC main output winding and the two sets of AC auxiliary windings of the stator of the AC generator, the potential is supplied to the working voltage of the AC automatic voltage regulator, and the AC automatic voltage regulator controls the magnetic field size of the 8-pole exciting winding of the stator of the exciter, thereby the three-phase AC main output winding of the stator of the AC generator rapidly establishes the rated voltage; at the same time, the DC automatic voltage regulator for exciting the DC generator starts to work, controls the 4-pole exciting winding of the AC exciter stator to generate three-phase symmetrical potential by the 4-pole armature winding of the exciter rotor, rectifies the potential into DC by the second rectifier, and provides excitation for the rotor exciting winding of the DC generator, thereby outputting rated voltage at 2 groups of output ends of the DC generator simultaneously.
When the load is loaded, the stator winding of the alternating-current generator feeds back signals through the alternating-current voltage drop compensation circuit, the stator winding of the direct-current generator feeds back signals through the direct-current voltage drop compensation circuit, and the actual voltage output by the alternating-current generator receives the feedback signals and is processed by the alternating-current automatic voltage regulator to control the output alternating-current voltage of 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 utility model, through sharing a rotating shaft with the DC generator rotor, the AC generator rotor and the exciter rotor in the same frame cavity, and the exciter adopts a double-pole excitation mode to arrange 2 sets of windings in an iron core, and rotating a rotating shaft, the function of two exciters can be realized by one exciter iron core, so that the double-current generator realizes self-excitation starting, the structure is compact, the length of the motor is greatly shortened, the occupied space area is also reduced, and the cost of the equipment is reduced; meanwhile, the direct current generator rotor and the alternating current generator rotor can simultaneously generate respective magnetic fields which are mutually independent on an electromagnetic structure, the alternating current main output and the direct current main output are not interfered with each other, the effects of no interference of an excitation source and stable performance are achieved, the pole number of the alternating current rotor and the pole number of the direct current rotor can be respectively set according to the frequency required by alternating current and direct current, the direct current output adopts double-path 12-pulse 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 effect of simultaneous working of alternating current output and direct current output of one motor is realized, and in addition, because the alternating current output and the direct current output are both provided with voltage drop compensation circuits, the voltage of the output end can be always kept to reach a required value. .
Claims (9)
1. A double-12-pulse-wave 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 installed 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 installed on the inner wall of the base from front to back in sequence;
the circumference of the outer ring of the direct current generator rotor is embedded with an excitation winding of the direct current generator rotor, the current of the excitation winding of the direct current generator rotor is controlled by a control system, the stator of the direct current generator is sleeved with the rotor of the direct current generator, 4 groups of direct current windings with the phase difference of 30 degrees are uniformly distributed and embedded on the circumference of the inner ring of the stator of the direct current generator, the coil inserting of the direct current windings adopts the overlapping mode of 4 groups of windings, namely, 4 layers of windings are embedded in each stator slot from the slot bottom to the slot opening, and 1 conducting wire of each set of windings is sequentially wound on 1 layer, 2 layers, 3 layers and 4 layers of adjacent 4 slots of the stator, winding labels of the same layer of wires in adjacent stator slots are different, 1 zero line outgoing wire and 1 live wire outgoing wire are arranged in each stator slot, all the zero line outgoing wires are connected into a neutral point, and live wire outgoing wires of four groups of direct current windings with phases different by 30 degrees in each two groups of stator slots are respectively rectified by a rectifier bridge and then output in parallel to form double 12-pulse direct current output;
the alternating current generator stator is sleeved with the alternating current generator rotor, an 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, an exciting winding of the alternating current generator rotor is embedded on the circumference of the outer ring of the alternating current generator rotor, and the current of the exciting winding of the alternating current generator rotor is controlled by the 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 exciter stator is sleeved with the exciter rotor, the outer end face of the exciter rotor is fixedly provided with a first rectifier and a second rectifier, 2 layers of armature windings are embedded on the circumference of the outer ring of the exciter rotor, the 2 layers of armature windings comprise 8-pole armature windings and 4-pole armature windings, the 4-pole armature winding and the 8-pole armature winding are in insulated 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 excitation windings, one convex tooth in each 4-pole excitation winding is wound with 8-pole excitation windings, the 4-pole excitation winding and the 8-pole excitation winding are respectively controlled by a control system, the 8-pole armature winding is connected with the excitation winding of the alternating-current generator rotor through an outgoing line of a first rectifier, and the 4-pole armature winding is connected with an excitation winding of the direct-current generator rotor through an outgoing line of the second rectifier.
2. The dual 12-pulse wave dual-current brushless generator according to claim 1, wherein the alternator stator winding includes a three-phase ac main output winding, an auxiliary winding for the alternator, and an auxiliary winding for the dc generator, the three-phase ac main output winding is sequentially embedded at a groove bottom position of the stator inner ring groove, and the auxiliary winding for the alternator and the auxiliary winding for the dc generator are respectively symmetrically disposed on a circumference of the stator and are sequentially embedded at a groove opening position of the stator inner ring groove.
3. The double 12-pulse wave double-current brushless generator according to claim 2, wherein the number of stator slots occupied by the auxiliary winding for the alternating-current generator and the auxiliary winding for the direct-current generator in the inner ring of the stator is greater than or equal to a multiple of 3 and less than a half of the total number of slots, respectively.
4. A double 12-pulse double-current brushless generator according to claim 1, 2 or 3, wherein the control system comprises a DC automatic voltage regulator, an AC automatic voltage regulator, a DC voltage drop compensation circuit and an AC voltage drop compensation circuit, 2 phases of the output ends of the three-phase AC output windings of the stator windings of the AC generator are respectively connected with the AC automatic voltage regulator directly, the other 1 phases are connected with the AC automatic voltage regulator through the AC voltage drop compensation circuit by a current transformer penetrating the phase, the AC auxiliary winding of the stator windings of the AC generator is connected with the AC automatic voltage regulator, the DC auxiliary winding of the stator windings of the AC generator is connected with the DC automatic voltage regulator, so that the AC automatic voltage regulator obtains excitation power from the DC auxiliary winding and the AC auxiliary winding of the stator of the AC generator, the measurement feedback signals are respectively from the output ends of the alternating current generator and the direct current generator;
and the output of a current transformer sleeved on one phase of the AC side is connected with the DC automatic voltage regulator through a DC voltage drop compensation circuit.
5. The double 12-pulse-wave double-current brushless generator as claimed in claim 4, wherein the rotating shaft is provided with a threading hole, the threading hole is led out from one end of the rotating shaft on one side of the bearing through the shaft hole on the other side of the bearing, the leading-out wires of the first rectifier and the second rectifier are respectively connected with the excitation winding of the alternator rotor after passing through the threading hole, and the leading-out wire of the second rectifier is connected with the excitation winding of the alternator rotor.
6. The double 12-pulse wave double-current brushless generator according to claim 1 or 5, wherein the fan is installed at the output end of the rotating shaft, and when the generator works normally, cooling air enters from the rear end of the generator, passes through the exciter stator, the alternator stator and the dc generator stator in sequence, and then is exhausted from the air outlet of the transition joint through the fan.
7. The double 12-pulse-wave double-current brushless generator as claimed in claim 6, wherein a transition joint is installed at the front end of the base, one end of the transition joint is connected with the base through a spigot, and the other end of the transition joint is connected with a spigot and an installation hole which are matched with the dragging machine.
8. The dual 12-pulse double-current brushless generator as claimed in claim 7, wherein the rotating shaft of the front end of the fan is provided with a laminated coupler, and the outer circular surface of the laminated coupler is matched with the inner circular surface of the spigot of the dragging machine.
9. The dual 12-pulse double-current brushless generator as claimed in claim 5, wherein the first rectifier and the second rectifier are three-phase silicon rotary bridge rectifiers, respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822198553 | 2018-12-26 | ||
| CN2018221985539 | 2018-12-26 |
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| Publication Number | Publication Date |
|---|---|
| CN209948920U true CN209948920U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921252968.8U Active CN209982291U (en) | 2018-12-26 | 2019-08-05 | DC stator winding of brushless generator |
| CN201921252973.9U Withdrawn - After Issue CN209948920U (en) | 2018-12-26 | 2019-08-05 | Double 12 pulse wave double current brushless generator |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921252968.8U Active CN209982291U (en) | 2018-12-26 | 2019-08-05 | DC stator winding of brushless generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429776A (en) * | 2018-12-26 | 2019-11-08 | 山东德欣电机有限公司 | Double 12 pulse wave double fluid brushless generators |
-
2019
- 2019-08-05 CN CN201921252968.8U patent/CN209982291U/en active Active
- 2019-08-05 CN CN201921252973.9U patent/CN209948920U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429776A (en) * | 2018-12-26 | 2019-11-08 | 山东德欣电机有限公司 | Double 12 pulse wave double fluid brushless generators |
| CN110429776B (en) * | 2018-12-26 | 2024-03-19 | 山东德欣电机有限公司 | Double 12 pulse wave double flow brushless generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN209982291U (en) | 2020-01-21 |
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