CN109120203A - motor control system - Google Patents
motor control system Download PDFInfo
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- CN109120203A CN109120203A CN201710485068.7A CN201710485068A CN109120203A CN 109120203 A CN109120203 A CN 109120203A CN 201710485068 A CN201710485068 A CN 201710485068A CN 109120203 A CN109120203 A CN 109120203A
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- Prior art keywords
- winding
- phase
- electric motor
- conducting
- control system
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
A kind of motor control system of the conduction amount of controllable motor winding a, comprising: electric motor and a frequency converter.The electric motor includes a stator, a rotor and a winding structure.The stator has the iron core for being formed with multiple slots.The rotor by the track ring around.The winding structure is constituted by the pin insertion of multiple hairpin-type conducting wires to be set in those slots, in each slot, those pins are sequentially configured to multi-layer conductor leads along stator radial direction, wherein, the winding structure has multiphase, and each phase is respectively provided with multiple windings.The frequency converter connects power supply and those windings, and whether control with a thread-changing controller the more aforementioned winding conducting of each phase.In the case where the electric motor is located at a high revolving speed mode, the full conducting of the more each phase of conduction amount for those windings which controls each phase reduces 1/3.
Description
Technical field
Motor control system of the present invention about a kind of conduction amount of controllable motor winding, is used for especially in regard to one kind
Control the motor control system of the electric motor of vehicle.
Background technique
Have more and more vehicles in recent years using the motor control system to be driven by electricity, in motor control system
Electric motor generally there is stator and rotor, the identical copper wire of multiple groups sectional area is inserted in each slot of stator and shape
At coiling, the copper wire in slot passes through the electric current of multiphase and generates rotating excitation field, generates electromotive force whereby and rotates rotor.With
The revolving speed of rotor improves, and the counter electromotive force in electric motor can be also gradually increasing, and since the number of turns of coiling is fixed, can produce
Raw revolving speed after counter electromotive force contradicts upper voltage limit with the presence of that can not be promoted the problem of.In this regard, general existing solution
It is and then to promote the revolving speed upper limit by weak magnetic mode to reduce counter electromotive force, but using the method when may require that additional electric current
With magnetic flux needed for generating weak magnetic, efficiency is caused to decline, and the revolving speed effect promoted by this method is limited, finally, still failing
Substantially expand operating range.
Summary of the invention
In order to overcome aforementioned existing issue point, the present invention provides a kind of motors of the conduction amount of controllable motor winding
Control system a, comprising: electric motor and a frequency converter.Aforementioned electric motor include: a stator, a rotor and one around
Cable architecture.Stator former has the iron core for being formed with multiple slots.Foregoing rotor is surround by stator former.Aforementioned winding structure by
It is constituted by the pin insertion of multiple hairpin-type conducting wires to be set in more aforementioned slot, in each aforementioned grooves, more aforementioned pin
Multi-layer conductor leads are sequentially configured to along stator radial direction, wherein aforementioned coiling has multiphase, and each phase is respectively provided with multiple
Winding, more aforementioned winding are respectively arranged in more aforementioned slot.Aforementioned frequency converter has a thread-changing controller, and aforementioned frequency converter connects
Connect power supply and more aforementioned winding, wherein whether aforementioned thread-changing controller controls the more aforementioned winding conducting of each phase.Preceding
Electric motor is stated to be located under a high revolving speed mode, aforementioned thread-changing controller control the conduction amount of the more aforementioned winding of each phase compared with
The full conducting of each phase reduces 1/3.
In an embodiment, wherein in each aforementioned grooves, aforementioned winding structure along stator radial direction from radius compared with
Small place to radius larger part is sequentially equipped with first to the tertiary winding, and under aforementioned high revolving speed mode, aforementioned thread-changing controller is disconnected
More aforementioned first, second or any group of winding in the tertiary winding conducting.
In an embodiment, in each aforementioned grooves, more aforementioned pin is sequentially configured to first along stator radial direction
To layer 6 conducting wire, each layer conductor forms concentric circles distribution, aforementioned first, second layer conductor structure in arrangement in more aforementioned slot
At the first winding, aforementioned third, the 4th layer conductor the second winding of composition, the aforementioned 5th, the layer 6 conducting wire composition tertiary winding,
Wherein, aforementioned first winding on stator former radial direction be located at the smallest position of radius.
In an embodiment, first winding, second winding and the tertiary winding in each slot are with serial arrangement
Conducting, and there is switching circuit to switch for different mode.
In an embodiment, aforementioned winding structure is configured to three-phase, and aforementioned power source is switched to three-phase electricity by aforementioned frequency converter
Stream, forms two kinds of conduction modes of high revolving speed and the slow-speed of revolution with six conducting wires, then transport to the input terminal of aforementioned three-phase respectively.
In an embodiment, aforementioned winding structure is configured to three-phase, and aforementioned power source is switched to three-phase electricity by aforementioned frequency converter
Stream, forms two kinds of conduction modes of high revolving speed and the slow-speed of revolution with nine conducting wires, then be separately input into the input terminal of aforementioned three-phase.
Conducting wire is aforementioned to change in aforementioned electric motor under needing a slow-speed of revolution mode of high torque (HT) in an embodiment
Lane controller controls more aforementioned winding and is connected entirely.
In an embodiment, to reach preferable drive efficiency, aforementioned thread-changing controller is according to electric motor at same turn
The drive efficiency of different mode under square and same rotating speed, the more aforementioned winding of control is connected entirely or conduction amount is reduction 1/3.
Detailed description of the invention
Fig. 1 shows the schematic diagrames of the stator of the electric motor of the motor control system of one embodiment of the invention.
Fig. 2 indicates the schematic diagram of part-structure of the electric motor of one embodiment of the invention when each winding is connected entirely.
Fig. 3 indicates showing for part-structure of the electric motor of one embodiment of the invention when each winding conduction amount reduces 1/3
It is intended to.
Fig. 4 A indicates the schematic diagram of operating range of the electric motor under fully conducting state.
Fig. 4 B indicates that electric motor reduces the schematic diagram of the operating range under 1/3 state in each winding conduction amount.Fig. 4 C table
Show that electric motor reduces the schematic diagram of the operating range under 1/2 state in each winding conduction amount.Fig. 5 indicate fully conducting state with
The operating range efficiency that each winding conduction amount reduces by 1/3 state compares figure.Fig. 6 A, 6B indicate the motor control of different embodiments
The schematic diagram of system.
Fig. 7-Fig. 9 is the schematic diagram for indicating the thread-changing controller of different embodiments of the invention.
Wherein appended drawing reference are as follows:
100 electric motors,
1 stator,
2 slots,
3 rotors,
4 winding structures,
41 V phases,
42 W phases,
43 U phases,
5 first windings,
6 second windings,
7 tertiary windings,
8 thread-changing controllers,
81 first switch,
811 main switching circuits,
812 secondary switching circuits,
813 terminal lines,
82 second switch,
821 main switching circuits,
822 secondary switching circuits,
823 terminal lines,
83 third switch,
831 main switching circuits,
832 secondary switching circuits,
833 terminal lines,
9 frequency converters,
10 power supplys,
The first layer conductor of A,
The second layer conductor of B,
C third layer conductor,
The 4th layer conductor of D,
E layer 5 conducting wire,
F layer 6 conducting wire,
H second end,
L first end,
OP1, OP2 operate point.
Specific embodiment
Hereby cooperation schema illustrates presently preferred embodiments of the present invention.For the present invention aforementioned and other technology contents, feature
With effect, cooperate in the detailed description for referring to the preferred embodiment of one of schema following.The direction being previously mentioned in following embodiment
Term, such as: upper and lower, left and right, front or rear etc. are only the directions with reference to annexed drawings.Therefore, the direction term used is
For illustrating to be not intended to limit the invention.
Referring to Fig. 7~9, the conduction amount of the motor control system controllable motor winding of one embodiment of the invention includes
Electric motor 100 and frequency converter 9, electric motor 100 include stator 1, rotor 3 (being shown in Fig. 2,3).Fig. 1 shows electronic
The stator of motor 100, stator 1 are the iron core of a hollow annular, are formed with multiple slots 2 on iron core.Fig. 2,3 display electric motors
The part-structure of stator 1 and rotor 3 in 100, rotor 3 is to be set to the hollow annular of stator 1 by the circular mode of stator 1
In portion.Winding structure 4 is provided in slot 2, in the present invention, winding structure 4 can be led by by multiple hairpin-types (hair pin)
The pin insertion of line is set in slot 2 and constitutes, and winding structure 4 is with multiphase, for example, V phase 41, W phase 42 and U phase herein
43.There are multiple windings 5~7 again in each phase.Frequency converter 9 connects a power supply 10 and winding 5~7, and has a thread-changing control
Device 8 processed, thread-changing controller 8 connect those windings 5~7 of each phase, for those windings 5~7 in each phase conducting with
It is no to be controlled.
In this present embodiment, winding structure 4 has the three-phases such as V phase 41, W phase 42, U phase 43, is respectively provided with again in each phase
First winding 5, the second winding 6 and the tertiary winding 7, but it's not limited to that for the number of phases and the quantity of winding.Wherein, same
The first, second, third winding 5,6,7 in phase can be connected with the conducting wire of short span, be required winding according to structure
Series connection, the first, second, third winding 5,6,7 is connected respectively with the conducting wire of full span in each phase；It is configured to V phase 41, W phase
42, each first winding 5 in each phase of U phase 43 is connected with each other, each second winding 6 is connected with each other and each tertiary winding 7
It is connected with each other, thread-changing controller 8 is configured to disconnect leading for any group of winding in first, second or the tertiary winding 5,6,7
It is logical.
Then, illustrate composition of the winding structure 4 in slot 2.As shown in Fig. 2, in each slot 2 of stator 1, around knot
Structure 4 is sequentially equipped with first to layer 6 conducting wire A~F along the radial direction of stator 1, and every layer conductor is generally around cricoid
Iron core and be arranged together in multiple circles, in other words, if seeing it from the front of stator 1, it can be seen that first to layer 6 conducting wire A
~F is formed as six layers of concentric circles distribution in arrangement in slot 2.In this present embodiment, be also interpreted as winding structure 4 along
The radial direction of stator 1 is sequentially equipped with the first, second, third winding 5,6,7.In detail, as shown in Fig. 2 (and/or Fig. 1), slot
2 are formed as forming opening towards rotor 3, and first, second layer at radius minimum (near opening) is located in slot 2 and is led
Line A, B constitute the first winding 5, constitute the second winding 6, position positioned at the third of radius moderate-length position, the 4th layer conductor C, D
In radius maximum (farthest away from opening) the 5th, layer 6 conducting wire E, F constitute the tertiary winding 7, at this point, the first winding 5 in
It is located at the smallest position of radius on 1 radial direction of stator.It, can be for electric motor by above-mentioned coiling setting and packet mode
Finer control is carried out, and then obtains desired operating range.But the present invention does not limit the conducting wire with adjacent layer
A winding is constituted, a winding can be also constituted with the conducting wire of non-conterminous layer, or a winding is constituted with three layers of conducting wire.Although also,
Bracket groove 2 of the present invention is preferably formed as being open towards rotor 3, and to reduce stator iron loss and be conducive to the generation of torque, but slot 2 is also
It is formed as not being open towards rotor 3.
Specifically, winding structure 4 of the invention preferably uses multiple hairpin-types (hair pin) conducting wire structure
At, each hairpin-type conducting wire for example can be inserted directly into and be set in slot 2 using its two pins as two conducting wires, such as
First in any slot 2 in Fig. 2 is a pin of hairpin-type conducting wire to layer 6 conducting wire A~F any layer, in pin
(conducting wire) is inserted in after slot 2, and each conducting wire can be attached, and completes the company of short span and full span between each winding
It connects, for example, the pin for the different hairpin-type conducting wire that can be connected by the mode of welding.Whereby, conductor accounting in slot can be improved
Product rate and 100 packaging efficiency of electric motor.
In the embodiment of Fig. 7~9 of the present invention, electric motor 100 can switch slow-speed of revolution mode by thread-changing controller 8
And high two kinds of operating states of revolving speed mode.In the case where electric motor 100 is located at a high revolving speed mode, thread-changing controller 8 is controllable
1/3 is reduced when the full conducting of the more each phase of the conduction amount of the winding of each phase.By by the winding of phase each in winding structure 4
Conduction amount reduces 1/3, can reach the effect of reducing by 100 counter electromotive force of electric motor.Referring to Fig. 7 (and Fig. 3), such as using changing
The switching of lane controller 8 only connects the second winding 6 and the tertiary winding 7 each phase, and reaching subtracts the conduction amount of winding
Few 1/3 purpose.
Under slow-speed of revolution mode, electric motor 100 is fully conducting state as shown in Figure 2, at this point, thread-changing controller 8 makes
The first winding 5, the second winding 6 and the tertiary winding 7 in V phase 41, W phase 42 and U phase 43 is obtained to form full series connection and all lead
It is logical, it can produce biggish magnetic flux, therefore, in the case where just starting or needing to export the situation of high torque (HT), winding structure 4 can be right
Rotor 3 provides biggish electromagnetic torque.Also, the operating range figure of rotary speed-torque of the electric motor 100 under general modfel is such as
Shown in Fig. 4 A, getable maximum torque be can reach 350Nm (Newton meter) in this operating range, and maximum speed
Up to 6000rpm (enclosing number per minute).
Then, under high revolving speed mode, electric motor 100 as shown in Figure 3 as and do not turn on whole windings, in this reality
It applies in example, thread-changing controller 8 disconnects the conducting of the first winding 5 of each phase, so that in V phase 41, W phase 42 and each phase of U phase 43 only
There are the second winding 6 and the tertiary winding 7 for conducting, compared to slow-speed of revolution mode, the conduction amount of the winding of each phase reduces 1/
3, in other words, the conduction amount of whole windings is whole windings in the winding structure 4 under slow-speed of revolution mode in winding structure 4
The 2/3 of conduction amount.Therefore, under high revolving speed mode, rotor 3 can be reduced because revolving speed improves by the equivalent the number of turns of coiling is reduced
Generated counter electromotive force, and then rotor 3 can be promoted to higher revolving speed.Also, electric motor 100 is under high revolving speed mode
The operating range figure of rotary speed-torque is as shown in Figure 4 B, and the getable maximum torque of institute can reach about in this operating range
270Nm, and maximum speed is up to 10000rpm.
Specifically, in the above-described embodiments (referring to Fig. 7), due to the first winding 5 be in three groups of windings near
Nearly rotor 3, therefore, thread-changing controller 8 disconnects the conducting of the first winding 5 near rotor 3, makes neighbouring caused by rotor 3
The influence of effect reduces, simultaneously because the first winding 5 is influenced seriously to generate a large amount of copper loss by kindred effect, therefore in the low load of high speed
Section reduces copper loss loss to its open circuit, promotes electric efficiency, and enable the maximum speed of operating range that can more improve, and anticipates
That is, disconnecting 100 operating efficiency highest of electric motor obtained by the first winding 5.Although disconnecting the first winding 5 near rotor 3
For preferred embodiment of the invention, but in the present invention in other embodiments, thread-changing controller 8 disconnects centrally located
The second winding 6 (referring to Fig. 8) or disconnect the tertiary winding 7 (referring to Fig. 9) farthest away from rotor 3, still can reach raising
Revolving speed increases the effect of operating range.
Here, the comparison for Fig. 4 B and Fig. 4 C is illustrated, and in detail, electronic horse used by Fig. 4 C of the present invention
The composition of the winding structure 4 of the embodiment reached is not identical as the embodiment of Fig. 4 A, 4B institute adopter.Here, electric motor
In each phase of the coiling of stator, such as a winding constituted with every three layer conductor, it is this means, each to be mutually only respectively provided with two windings,
And Fig. 4 C is the state that electric motor 100 reduces 1/2 in each winding conduction amount, such as only there was only one group of winding conducting in each phase
Operating range figure.As shown in Fig. 4 C, although the getable maximum speed of institute is up to 10000rpm in operating range at this time,
But maximum torque is only capable of reaching about 220Nm.Therefore the obtained operation of conducting of three layer conductor of disconnection compared to Fig. 4 C
Section only needs in the embodiment of Fig. 4 B to disconnect two layer conductors (one group of winding) and may make the maximum speed of electric motor 100 same
Sample reaches 10000rpm, but maximum torque can reach about 270Nm, therefore can obtain having both the operating space of high revolving speed and higher torque
Between.
Next illustrate how electric motor 100 of the invention selects slow-speed of revolution mode or high revolving speed mode with Fig. 5.
Specifically, the embodiment of Fig. 6 is the operating range figure for being applied with high voltage, thus the pattern of operating range with
Fig. 4 A, the embodiment of 4B are slightly different.
In Fig. 5, the operating range efficiency distribution figure of slow-speed of revolution mode and high revolving speed mode is overlapped into same figure
On, and the effect with the efficiency of the operating range of slow-speed of revolution mode as a reference value, by high revolving speed mode compared to slow-speed of revolution mode
The number of rate gain is with contour is divided into different blocks and indicates, wherein the efficiency of slow-speed of revolution mode is higher than high revolving speed mode
The block of efficiency efficiency gain 0% is expressed as in Fig. 6, i.e., high revolving speed mode does not have compared to slow-speed of revolution mode at this time
More efficiency gains.
When the operating state of electric motor 100 is located at running point OP1, turn since high revolving speed mode is unable to reach target
Square (is greater than 270Nm), therefore efficiency gain at this time is 0% as can be seen from Figure 6, and therefore, thread-changing controller 8 is complete by winding
Conducting, makes electric motor 100 be located at slow-speed of revolution mode.When the operating state of electric motor 100 is located at running point OP2, low turn
Fast mode and high revolving speed mode all can reach the revolving speed of this operating point OP2, torque-demand, however, as can be seen from Figure 5 at this time
Efficiency gain be about 8%, therefore, the conduction amount of winding is reduced 1/3 by thread-changing controller 8, and electric motor 100 is made to be located at height
Revolving speed mode.
From the foregoing, it will be observed that when slow-speed of revolution mode or high revolving speed mode can achieve target torque under same rotating speed
In the case of, the drive efficiency of thread-changing controller 8 of the invention according to electric motor 100 under different operation modes selects this to cut
It changes slow-speed of revolution mode or high revolving speed mode into, is this means, connected entirely according to the efficiency gain control winding of Fig. 5 or conduction amount is to subtract
Few 1/3, the running efficiency of electric motor 100 can be promoted whereby.
Hereinafter, illustrating the various composition embodiments of electric motor 100 and thread-changing controller 8 in the present invention according to Fig. 6 to 9.
As shown in Figure 6A, electric motor 100 is connected to power supply 10 by frequency converter 9.Frequency converter 9 is by the electricity of power supply 10
Circulation is input to electric motor 100 after changing the alternating current of multiphase into.Since thread-changing controller 8 is set at frequency converter 9, and change
Line mechanism provides all series winding conductings and by the first winding 5 of the first winding 5, the second winding 6 and the tertiary winding 7 by motor-end
Two kinds of turning circuits of short circuit, and switched by 8 operation mode of thread-changing controller in frequency converter 9, therefore frequency converter 9 is accordingly with six
Bar conducting wire is connected to electric motor 100.
Please refer to Fig. 7 of the present invention, in this embodiment, the winding structure 4 of electric motor 100 have V phase 41, W phase 42 and
U phase 43, frequency converter 9 are connected to the three-phase of coiling 4 with six conducting wires.Each phase be respectively provided with the first winding 5, the second winding 6,
And the tertiary winding 7, wherein in this embodiment, thread-changing controller 8 is, for example, the device having there are three switch, each
Switch is, for example, that the multiplexer of a pair two or selection switch still and show and be defined in this, will be connected to the first winding 5
First end L or second end H circuit selectively turn on or open circuit.When electric motor 100 is located at high revolving speed mode, the
One, the conducting that second, third switch 81,82,83 is each turned off main switching circuit 811,821,831 makes its open circuit, and enables
Secondary switching circuit 812,822,832 is connected, therefore, thread-changing controller 8 as shown in Figure 7 as switch and be connected to each first winding 5
Second end H.At this point, only only having the second winding 6 and the tertiary winding 7 to be switched in each phase.When electric motor 100 is positioned at low
When revolving speed mode, the conducting that the first, second, third switch 81,82,83 is each turned off secondary switching circuit 812,822,832 makes
Its open circuit, and main switching circuit 811,821,831 is enabled to be connected, at this point, the switching of thread-changing controller 8 is connected to the first winding 5
First end L, so that the first winding 5, the second winding 6 and the tertiary winding 7 in each phase are configured to connect and all turn on.It needs
Illustrate, the composition of the thread-changing controller 8 of Fig. 7 and Fig. 2,3 embodiment in thread-changing controller 8 it is identical.
Then, Fig. 6 B is please referred to, place different with the embodiment of Fig. 6 A is, thread-changing mechanism provides first by motor-end
All series winding is connected and leads two kinds of 7 short circuit of the second winding 6 or the tertiary winding for winding 5, the second winding 6 and the tertiary winding 7
Circuit passband, therefore frequency converter 9 is accordingly connected to electric motor 100 with nine conducting wires.The embodiment of Fig. 8 and Fig. 9 and the reality of Fig. 6 B
It is corresponding to apply example.
Fig. 8 of the present invention is please referred to, part same as figure 7 repeats no more.In this embodiment, thread-changing controller 8 is for example
It is that there are three the device of switching switch, first end L and the of each switching switch example will be connected to the second winding 6 for tool
The circuit of two end H selectively turns on or open circuit.Also, in this embodiment, frequency converter 9 is respectively with terminal line 813,823,833
Connect one end of the first winding 5 of each phase.When electric motor 100 is located at high revolving speed mode, the first, second, third switch
81,82,83 main switching circuit 811,821,831 and secondary switching circuit 812,822,832 is enabled to simultaneously turn on, at this point, thread-changing control
Switching the switching circuit being connected to by the second winding 6 as device 8 processed is as shown in Figure 8 causes the second winding 6 to fail.At this point, each
Only only have the first winding 5 and the tertiary winding 7 to be switched in phase.When electric motor 100 is located at slow-speed of revolution mode, first,
Two, third switch 81,82,83 simultaneously switches off main switching circuit 811,821,831 and secondary switching circuit 812,822,832 and makes
Its open circuit, thread-changing controller 8 switches off the circuit between first end L and second end H at this time, makes alternating current from frequency converter 9 to hold
Sub-line 813,823,833 is sent out, so that the first winding 5, the second winding 6 and the tertiary winding 7 in each phase are configured to connect
And it all turns on.
Fig. 9 of the present invention is please referred to, part identical with Fig. 8 repeats no more.In this embodiment, thread-changing controller 8 is for example
It is that there are three the device of switching switch, first end L and the of each switching switch example will be connected to the tertiary winding 7 for tool
The circuit of two end H selectively turns on or open circuit.When electric motor 100 is located at high revolving speed mode, first, second, third is cut
Parallel operation 81,82,83 enables main switching circuit 811,821,831 and secondary switching circuit 812,822,832 simultaneously turn on, at this point, changing
The switching circuit that 7 side of the tertiary winding is switched to as lane controller 8 is as shown in Figure 9 causes the tertiary winding 7 to fail.At this point, each phase
In only only have the first winding 5 and the second winding 6 to be switched on.When electric motor 100 is located at slow-speed of revolution mode, first,
Two, third switch 81,82,83 simultaneously switches off main switching circuit 811,821,831 and secondary switching circuit 812,822,832
Make its open circuit, thread-changing controller 8 switches off the circuit between first end L and second end H at this time, make alternating current from frequency converter 9 with
Terminal line 813,823,833 is sent out, so that the first winding 5, the second winding 6 and the tertiary winding 7 in each phase are configured to go here and there
Join and all turns on.
Whether the present invention controls the conducting of each winding by thread-changing controller 8, and thread-changing controller 8 is set to frequency conversion
At device 9, therefore, the minimum only each phase input terminal with six conducting wire output three-phase currents to electric motor 100 of frequency converter 9, frequency conversion
The output lead of device 9 can simplification.Also, be set at different windings by by above-mentioned thread-changing controller 8, it can be simply right
It is controlled whether the conducting of winding, and then can simply switch low fast mode and the high revolving speed mode of walking around.
In conclusion electronic horse can be improved by foregoing every technical characteristic in motor control system of the invention
The operating range reached, reduces the complexity of frequency converter bracing wire, and/or can promote the convenience of electric motor assembling.Though also,
So motor control system of the invention is applicable to the vehicle such as automobile or locomotive, however, it is not limited to this also can be used in
In other related fieldss.
Although the present invention is disclosed as above with embodiment above-mentioned, however, it is not to limit the invention.Skill belonging to the present invention
Has usually intellectual in art field, without departing from the spirit and scope of the present invention, when can do a little change and retouching.
Therefore protection scope of the present invention should be defined by the scope of the appended claims.
Claims (8)
1. a kind of conduction amount motor control system of controllable motor winding characterized by comprising
Electric motor comprising:
One stator has the iron core for being formed with multiple slots；
One rotor, by the track ring around；
One winding structure is constituted by the pin insertion of multiple hairpin-type conducting wires to be set in those slots, in each slot
Interior, those pins are sequentially configured to multi-layer conductor leads along stator radial direction, wherein the winding structure has multiphase, Mei Yixiang
It is respectively provided with multiple windings；And
One frequency converter, has a thread-changing controller, which connects power supply and those windings, wherein the thread-changing controller
Whether controlling those windings conducting of each phase；
In the case where the electric motor is located at a high revolving speed mode, the thread-changing controller control the conduction amounts of those windings of each phase compared with
The full conducting of each phase reduces 1/3.
2. motor control system as described in claim 1, which is characterized in that in each slot, the winding structure is along fixed
Sub- radial direction is sequentially equipped with first from radius smaller part to radius larger part and is somebody's turn to do under the high revolving speed mode to the tertiary winding
Thread-changing controller disconnect those first, second or any group of winding in the tertiary winding conducting.
3. motor control system as claimed in claim 2, which is characterized in that in each slot, those pins are along stator
Radial direction is sequentially configured to first to layer 6 conducting wire, and each layer conductor forms concentric circles distribution in arrangement in those slots, should
First, second layer conductor constitutes the first winding, and the third, the 4th layer conductor constitute the second winding, the 5th, layer 6 conducting wire structure
At the tertiary winding, wherein first winding on the stator radial direction be located at the smallest position of radius.
4. motor control system as claimed in claim 3, which is characterized in that first winding in each slot, this second
Winding is connected with the tertiary winding with serial arrangement.
5. motor control system as described in claim 1, which is characterized in that the winding structure is configured to three-phase, the frequency converter
The power supply is switched to three-phase current, forms two kinds of conduction modes of high revolving speed and the slow-speed of revolution with six conducting wires, then be separately input into
The input terminal of the three-phase.
6. motor control system as described in claim 1, which is characterized in that the winding structure is configured to three-phase, the frequency converter
The power supply is switched to three-phase current, forms two kinds of conduction modes of high revolving speed and the slow-speed of revolution with nine conducting wires, then be separately input into
The input terminal of the three-phase.
7. conducting wire motor control system as described in claim 1, which is characterized in that be located in the electric motor and need high torque (HT)
A slow-speed of revolution mode under, which controls those windings and is connected entirely.
8. motor control system as claimed in claim 7, which is characterized in that reach preferable drive efficiency, the thread-changing control
The drive efficiency of different mode of the device processed according to electric motor under same torque and same rotating speed, it is complete for controlling those windings
Conducting or conduction amount are to reduce 1/3.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111333352.5A CN114268266A (en) | 2017-06-23 | 2017-06-23 | Motor control system |
| CN201710485068.7A CN109120203A (en) | 2017-06-23 | 2017-06-23 | motor control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710485068.7A CN109120203A (en) | 2017-06-23 | 2017-06-23 | motor control system |
Related Child Applications (1)
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| CN202111333352.5A Division CN114268266A (en) | 2017-06-23 | 2017-06-23 | Motor control system |
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| CN109120203A true CN109120203A (en) | 2019-01-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112296515A (en) * | 2019-08-01 | 2021-02-02 | 通用汽车环球科技运作有限责任公司 | System and method for multi-tasking laser welding |
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| CN2442440Y (en) * | 2000-08-28 | 2001-08-08 | 机械工业部广州电器科学研究所 | Multiple gear graded speed control motor |
| CN1565075A (en) * | 2001-10-03 | 2005-01-12 | 株式会社安川电机 | Apparatus for switching windings of AC three-phase motor |
| CN201947084U (en) * | 2010-08-30 | 2011-08-24 | 唐菊香 | Double speed motor and control system of same |
| CN103151867A (en) * | 2011-12-07 | 2013-06-12 | 瑞美技术有限责任公司 | Spacer for supporting conductors in an electric machine |
| CN106787335A (en) * | 2016-12-16 | 2017-05-31 | 华中科技大学 | A kind of mixed conductor winding construction and the motor with the structure and its application |
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2017
- 2017-06-23 CN CN201710485068.7A patent/CN109120203A/en active Pending
- 2017-06-23 CN CN202111333352.5A patent/CN114268266A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2442440Y (en) * | 2000-08-28 | 2001-08-08 | 机械工业部广州电器科学研究所 | Multiple gear graded speed control motor |
| CN1565075A (en) * | 2001-10-03 | 2005-01-12 | 株式会社安川电机 | Apparatus for switching windings of AC three-phase motor |
| CN201947084U (en) * | 2010-08-30 | 2011-08-24 | 唐菊香 | Double speed motor and control system of same |
| CN103151867A (en) * | 2011-12-07 | 2013-06-12 | 瑞美技术有限责任公司 | Spacer for supporting conductors in an electric machine |
| CN106787335A (en) * | 2016-12-16 | 2017-05-31 | 华中科技大学 | A kind of mixed conductor winding construction and the motor with the structure and its application |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112296515A (en) * | 2019-08-01 | 2021-02-02 | 通用汽车环球科技运作有限责任公司 | System and method for multi-tasking laser welding |
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| CN114268266A (en) | 2022-04-01 |
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