CN106130289B - A kind of magneto and winding switching method equipped with winding electric control switching mechanism - Google Patents
A kind of magneto and winding switching method equipped with winding electric control switching mechanism Download PDFInfo
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- CN106130289B CN106130289B CN201610752606.XA CN201610752606A CN106130289B CN 106130289 B CN106130289 B CN 106130289B CN 201610752606 A CN201610752606 A CN 201610752606A CN 106130289 B CN106130289 B CN 106130289B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
- H02K21/021—Means for mechanical adjustment of the excitation flux
- H02K21/028—Means for mechanical adjustment of the excitation flux by modifying the magnetic circuit within the field or the armature, e.g. by using shunts, by adjusting the magnets position, by vectorial combination of field or armature sections
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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
- H02K3/28—Layout of windings or of connections between windings
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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
- H02P25/184—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 wherein the motor speed is changed by switching from a delta to a star, e.g. wye, connection of its windings, or vice versa
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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
- H02P25/188—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 wherein the motor windings are switched from series to parallel or vice versa to control speed or torque
Abstract
The present invention is a kind of magneto and winding switching method equipped with winding electric control switching mechanism, the every phase of motor has 2 identical sub-windings, respectively there are 2 extraction contacts, switching mechanism is 5 groups of Three-phase magnetic latching relays, every group of 3 actuations switch is connected two-by-two, the access contact that each extraction contact of machine winding is respectively attracted switch with 2 connect, and switch controller controls the closing or opening of each group Three-phase magnetic latching relay, makes machine winding star or triangle one of in series and parallel.Motor can match 2 identical windings, respectively connect switching mechanism.Switch controller connects master controller.This winding switching method is after initialization and detection, and switch controller instructs actuation or disconnection to Three-phase magnetic latching relay to control according to master controller, the connection type of switch motor winding.The present invention is switched by connection type, realizes the adjusting of torque and revolving speed；Double-winding structure realizes smoothly switching without torque ripple；Switching mechanism is simple and reliable.
Description
Technical field
The present invention relates to magneto technology, specially a kind of magneto and winding equipped with winding electric control switching mechanism
Switching method.
Background technique
Permanent magnet synchronous motor have it is high-efficient, it is small in size, it is light-weight, safeguard the advantages that simple, be now widely used for each
Kind industry and civilian occasion, gradually replace direct current generator and AC induction motor.But permanent magnet synchronous motor uses permanent magnetism material
Material, and inside the number of turns of winding coil can not change, and can generate intrinsic back-emf, be restricted its speed adjustable range.
In the case where motor inputs same current, output winding is respectively star series connection, triangle series connection, star parallel connection, triangle
When shape parallel connection, motor speed change from low to high, and motor output torque changes from high to low.It therefore will by switching mechanism
The output winding switch of motor is the connection type of star series, parallel or triangle series, parallel, can change machine winding
The number of turns makes motor export different torque and revolving speed to change intrinsic back-emf amplitude.Have at present using stepper motor
Control switching switchs the successful case switched in series and parallel to realize machine winding star and triangle.It is existing this series-parallel
There are two large problems for handover scheme, firstly, switching mechanism is complicated, reliability is low, at high cost, secondly motor output in handoff procedure
Torque ripple is big, and because that must be initially switched off electric current when switch motor winding, motor output torque is zero at this time.
Summary of the invention
The purpose of the present invention is designing a kind of magneto equipped with winding electric control switching mechanism, the three-phase windings of motor
There are 2 identical sub-windings in every phase.Each sub-winding has 2 extraction contacts, and three-phase shares 12 extraction contacts.Of the invention
Switching mechanism is 5 groups of Three-phase magnetic latching relays, and every group has 3 actuation switches, and the extraction contact of machine winding is opened with each actuation
The access contact of pass connects, and switch controller controls the closing or opening state of each group Three-phase magnetic latching relay, makes motor three
Phase winding is different connection types.
It is another object of the present invention to design a kind of winding switching side of magneto equipped with winding electric control switching mechanism
After method, initialization and detection, actuation of the switch controller according to the instruction of the master controller of motor to Three-phase magnetic latching relay
Or off-state control, the connection type of switch motor winding.
A kind of magneto equipped with winding electric control switching mechanism that the present invention designs, every phase of the three-phase windings of motor are
2 identical sub-windings.Each sub-winding has 2 extraction contacts, and three-phase shares 12 extraction contacts.Switching mechanism of the invention
For 5 groups of Three-phase magnetic latching relays, every group of Three-phase magnetic latching relay has three identical actuations of synchronous opening/closing to switch, and 5 groups
The actuation switch of Three-phase magnetic latching relay is connected two-by-two, and each extraction contact of motor three-phase sub-winding is respectively opened with 2 actuations
The access contact of pass connects.Switch controller is separately connected the pull-in winding in each group Three-phase magnetic latching relay, controls each group
Three-phase magnetic latching relay is closing or opening state, and motor three-phase windings star series, parallel or triangle is made to connect, simultaneously
One of 4 kinds of connection types of connection.Switch controller is connected through the master controller of CAN bus and motor, receives master controller
Related switch motor winding connection instruction.The master controller of motor connects through servo driver of motor and machine winding
It connects, the input current and torque of control winding.
In order to avoid the fluctuation of motor output torque when switch motor sub-winding, motor of the invention is identical configured with 2
Winding, double-winding structure is considered as a double-winding motor, or regards two parallel-connected induction motors as, and running current is at multiplication
Add.The master controller of motor is connect with 2 windings respectively through 2 servo driver of motor.2 windings connect in the same way respectively
The switching mechanism of a set of identical 5 groups of Three-phase magnetic latching relays is connect, the pull-in winding of 2 sets of 5 groups of Three-phase magnetic latching relays is equal
It is connect with switch controller, the energization or power-off of switch controller synchronously control pull-in winding；To control each group three-phase magnetic guarantor
Hold the attracting state of relay.
The Three-phase magnetic latching relay includes that pull-in winding, actuation interlocking bar and 3 actuations switches, 3 actuations are opened
The three pairs of access contacts closed are connect with each extraction contact of machine winding respectively, and three pairs of access contacts are with there are three connection sheets.Three
One end of a connection sheet respectively connects one in three pairs of access contacts and is fixed on actuation interlocking bar, three connection sheets it is another
End then accesses with three Duis another holding interval of contact or is in contact, and is attracted interlocking bar one end and pull-in winding iron core connects
It connects, is attracted interlocking bar connecting spring one end, the other end of spring is fixed on this casing of relay.When pull-in winding is powered, this group
When relay is attracted, it is attracted interlocking bar and is pulled by the iron core of pull-in winding, it is mobile with three connection sheets thereon, in connection sheet
End is affixed with corresponding access contact respectively to be contacted, i.e., three connection sheets connect three pairs of access contacts, and 3 actuations close the switch.
Conversely, spring makes to be attracted interlocking bar return, in three connection sheets thereon when pull-in winding power-off, this group relay disconnect
End is moved away from corresponding access contact, gap is kept not contact, i.e., three pairs access contacts are disconnected, and 3 actuation switches disconnect.
In order to detect the on off operating mode of relay, 1 optocoupler sensor is installed in relay1 case side, with switching control
Device connection.The other end for being attracted interlocking bar is equipped with baffle, when this group relay is attracted, is attracted interlocking bar and is drawn by pull-in winding
Dynamic, baffle is in front of optocoupler sensor, stops its light, and optocoupler sensor issues pickup signal and is sent into switch controller,
Whereby signal judges that this group relay is in attracting state to switch controller.Conversely, spring makes when pull-in winding power-off does not work
It is attracted interlocking bar return, baffle is moved away from front of optocoupler sensor, and optocoupler sensor light normally transmits and receives, switch controller root
The cut-off signal of optocoupler sensor when accordingly judges that this group relay is in an off state.It is attracted the baffle and relay of interlocking bar
The pull-in winding of device, which works, to be synchronized, the on off operating mode feedback signal of switch controller synchronization gain relay.
A kind of winding switching method for magneto equipped with winding electric control switching mechanism that the present invention designs includes as follows
Step:
The initialization of step I, switch controller
Initialization including clock module, I/O mouth mold block, CAN communication module etc.；
Step II, switch controller detect current winding connection
Switch controller detects the signal of the optocoupler sensor of each group Three-phase magnetic latching relay, judges the suction of each relay
Conjunction state thereby determines that current motor winding connection is star series connection, triangle series connection, star is in parallel, triangle is in parallel
In it is any；
Whether the connection type of detection winding and the instruction of master controller are identical, if both detections are identical, are judged as without reason
Hinder, perform the next step, it is on the contrary then report failure and return step II；
Step III, detection communication
Whether the CAN bus communication detected between switch controller and master controller is normal, and master controller is periodically to switching
Controller sends instruction, and switch controller gives master controller reply after receiving instruction, when on time switch controller does not receive
Instruction or master controller to master controller do not receive the response of switch controller at the appointed time, are judged as logical
Interrogate failure, switch controller and master controller report failure, to be handled in time, return step II；Conversely, communication it is normal, after
It is continuous to perform the next step；
Step IV, the master controller for detecting motor instruct and execute winding switching
If there is winding switching command, according to instruction, controls each group relay and be attracted, execute winding switching；Otherwise step is returned
Rapid II；
Whether step V, detection winding switching succeed
The master controller instruction for detecting current winding connection and motor requires identical, handover success, return step II；
Otherwise report failure and return step II.
The motor be configured with 2 identical windings, step IV execute winding switching when, master controller be initially switched off first around
The electric current of group, the connection type of the second winding is constant, but master controller increases one times of its input current, makes motor output torque
It is constant；When the switching of the first winding finishes, when master controller is started again to the first winding input current, while the second winding is inputted
Electric current accordingly reduces, and keeps the total output torque of motor constant.When first winding input current restores normal, the input of the second winding
Electric current has been kept to initial value；Switch controller starts the switching of the second winding, and process is identical as the first winding handoff procedure.Exist in this way
Motor torque fluctuation will not be generated in winding handoff procedure.
Compared with prior art, a kind of magneto and winding switching method equipped with winding electric control switching mechanism of the present invention
The advantages of are as follows: 1, may be selected by automatically controlled switching mechanism each phase sub-winding be star, triangle series and parallel connection type
Any one of, change winding coil the number of turns, realizes the adjusting of magneto torque and revolving speed；2, the double-winding structure of motor and
Double switching mechanisms are, it can be achieved that the winding connection without torque ripple smoothly switches；3, switching mechanism three-phase magnetic keep after
Electric appliance, mechanical structure is simple, at low cost, and wiring is more convenient, and electrical contact reliability is good, and components are modular member maintenance
It is convenient.
Detailed description of the invention
Fig. 1 is that the motor double winding of this magneto embodiment equipped with winding electric control switching mechanism embeds the wire schematic diagram；
Fig. 2 is first group of three-phase magnetic that this magneto embodiment equipped with winding electric control switching mechanism is connected to the first winding
Guard relay attracting state structural schematic diagram；
Fig. 3 is Fig. 2 off-state structural schematic diagram；
Fig. 4 is the circuit structure block diagram of this magneto embodiment equipped with winding electric control switching mechanism；
Fig. 5 is each phase sub-winding star series connection side of this magneto embodiment equipped with winding electric control switching mechanism
The circuit diagram of formula；
Fig. 6 is the workflow of the winding switching method embodiment of this magneto equipped with winding electric control switching mechanism
Figure.
Figure label are as follows:
Pull-in winding 1, spring 2 are attracted interlocking bar 3, baffle 4, and optocoupler sensor 5 is attracted switch K11, K21, K31,
Specific embodiment
The present invention will be described in detail below by way of embodiments and drawings.
Magneto embodiment equipped with winding electric control switching mechanism
This example motor is double-winding structure, i.e., machine winding is made of the first winding and the second winding in parallel, motor
Master controller is connect with the first winding and the second winding respectively through first motor servo-driver and the second servo driver of motor.
Double winding embeds the wire schematic diagram as shown in Figure 1, every phase of two windings has 2 sub-windings.
The extraction contact of first 2 sub-windings of winding U phase are as follows: UA1, UA2, UB1, UB2；UA1 picks out the first winding U1 phase
Lead-out wire；
The extraction contact of first 2 sub-windings of winding V phase are as follows: VA1, VA2, VB1, VB2；VA1 picks out the first winding V1 phase
Lead-out wire；
The extraction contact of first 2 sub-windings of winding W phase are as follows: WA1, WA2, WB1, WB2；WA1 picks out the first winding W1 phase
Lead-out wire；
The extraction contact of second 2 sub-windings of winding U phase are as follows: UC1, UC2, UD1, UD2；UC1 picks out the second winding U2 phase
Lead-out wire；
The extraction contact of second 2 sub-windings of winding V phase are as follows: VC1, VC2, VD1, VD2；VC1 picks out the second winding V2 phase
Lead-out wire；
The extraction contact of second 2 sub-windings of winding W phase are as follows: WC1, WC2, WD1, WD2.WC1 picks out the second winding W2 phase
Lead-out wire；
12 extraction contacts of each winding, double winding have 24 extraction contacts and switching mechanism wiring altogether.
2 windings are separately connected the switching mechanism of a set of identical 5 groups of Three-phase magnetic latching relays, and 2 sets of 5 groups of three-phase magnetic are protected
The pull-in winding for holding relay is connect with switch controller, by switch controller synchronously control.
The structure that this example is connected to first group of Three-phase magnetic latching relay of the first winding is as shown in Figures 2 and 3, including is attracted line
Circle 1 is attracted interlocking bar 3 and 3 actuation switches K11, K21, K31.3 three pairs of access contacts for being attracted switch are respectively K11
1., K11 2., K21 1., K21 2., K31 1., K31 2., access contact connect respectively with each extraction contact of machine winding.Three pairs
It is respectively K11L, K21L and K31L that access contact, which is matched there are three connection sheet, and one end of three connection sheets respectively connects access contact K11
2. K21 2. with K31 2., and be fixed on be attracted interlocking bar 3, the other end of three connection sheets then with access contact K11 1., K21 is 1.
It 1. keeps being spaced or being in contact with K31.It is attracted 3 one end of interlocking bar to connect with the iron core of pull-in winding 1, is attracted interlocking bar 3 and connects
The other end of one end of spring 2, spring 2 is fixed on this casing of relay.When pull-in winding is powered the actuation of this group relay, inhale
It closes interlocking bar 3 to be pulled by the iron core of pull-in winding 1, connection sheet mobile with three connection sheets K11L, K21L and K31L thereon
The upper end K11L, K21L and K31L respectively with access contact K11 1., 1. 1. K21 is affixed contact with K31, i.e. three connection sheet K11L,
K21L and K31L be respectively turned on three couples of access contact K11 1. with K11 2., K21 1. with K21 2. and K31 1. with K31 2., 3 suction
Combination switch closure.1 optocoupler sensor 5 is installed in relay1 case side, is connect with switch controller.It is attracted interlocking bar 3
The other end is equipped with baffle 4, when this group relay is attracted, is attracted interlocking bar 3 and is pulled by pull-in winding, baffle 4 is in optocoupler biography
5 front of sensor, stops its light, and switch controller obtains the connection signal of this optocoupler sensor 5 sending, judges this group relay
In an ON state.Conversely, spring makes to be attracted interlocking bar return, thereon when pull-in winding power-off, this group relay disconnect
The upper end connection sheet K11L, K21L and K31L be moved away from access contact K11 1., K21 1. with K31 1., i.e., three pairs access contacts are disconnected,
3 actuation switches disconnect.The baffle 4 for being attracted 3 one end of interlocking bar at the same time leaves 5 front of optocoupler sensor, optocoupler sensor 5
Light normally transmits and receives, and optocoupler sensor 5 issues cut-off signal and is sent into switch controller, and whereby signal judges switch controller
This group relay is in an off state.
The structure of each a set of 5 groups of Three-phase magnetic latching relays of first winding and the second winding is identical, and 5 groups of the first winding
It is K11, K21 and K31, K12, K22 and K32~K15, K25 and K35 that Three-phase magnetic latching relay, which has 5 groups of three actuations switches,；The
5 groups of Three-phase magnetic latching relays of two windings 5 groups of three actuations switch be K41, K51 and K61, K42, K52 and K62~K45,
K55 and K65.
As shown in figure 4, the master controller of motor is distinguished through first motor servo-driver and the second servo driver of motor
It is connect with the first winding and the second winding.Switch controller is separately connected the first winding and each group three-phase magnetic of the second winding is kept
Relay is attracted the pull-in winding in switch, and switch controller is connected through the master controller of CAN bus and motor.
The connection of each access contact for being attracted switch is as shown in figure 5,5 groups of three-phase magnetic of first set of the first winding keep relay
The actuation switch of device is connected two-by-two, i.e. 1. 2. K11 connects K12,1. 2. K12 connects K13, and 1. 2. K13 connects K14,1. K14 is connected
K15②；2. 2. K11 connects K21,1. 2. K21 connects K22,1. 2. K22 connects K23, and 1. 2. K23 connects K24,1. K24 is connected
K25②；2. 2. K21 connects K31,1. 2. K31 connects K32,1. 2. K32 connects K33, and 1. 2. K33 connects K34,1. K34 is connected
K35②。
The actuation switch of second set of 5 groups of Three-phase magnetic latching relay of the second winding is connected two-by-two in the same way, i.e. K41
1. connecting K42 2., 1. 2. K42 connects K43,1. 2. K43 connects K44,1. 2. K44 connects K45；2. 2. K41 connects K51, K51 is 1.
Connect K52 2., 1. 2. K52 connects K53,1. 2. K53 connects K54,1. 2. K54 connects K55；2. 2. K51 connects K61,1. K61 connects
Meet K62 2., 1. 2. K62 connects K63,1. 2. K63 connects K64,1. 2. K64 connects K65.
The access contact of switch is respectively attracted with the connection for drawing contact of each sub-winding as shown in figure 5, the 12 of the first winding
A contact of drawing each is connect with the access contact of 2 actuation switches in its 5 groups of Three-phase magnetic latching relays, and UA1 meets K14
1., K15 2., UA2 connect K12 1., K13 2., UB1 connect K13 1., K14 2., UB2 connect K11 1., K12 2., VA1 connect K24 1., K25 2.,
VA2 connect K22 1., K23 2., VB1 connect K23 1., K24 2., VB2 connect K21 1., K22 2., WA1 connect K34 1., K35 2., WA2 meets K32
1., K33 2., WB1 connect K33 1., K34 2., WB2 connect K31 1., K32 2.；
12 of second winding draw contact and are each also attracted switch with 2 in its 5 groups of Three-phase magnetic latching relays
Access contact connection, UC1 connect K44 1., K45 2., UC2 connect K42 1., K43 2., UD1 connect K43 1., K44 2., UD2 connect K41 1.,
K42 2., VC1 connect K64 1., K65 2., VC2 connect K52 1., K53 2., VD1 connect K53 1., K54 2., VD2 connect K51 1., K52 2., WC1
Connect K64 1., K65 2., WC2 connect K62 1., K63 2., WD1 connect K63 1., K64 2., WD2 connect K61 1., K62 2..
The pull-in winding of 2 sets of 5 groups of Three-phase magnetic latching relays is connect with switch controller, and switch controller is total through CAN
The connection of the master controller of line and motor, receives the instruction of the related switch motor winding connection of master controller.Switching control
Whether device synchronously control pull-in winding is powered, to control the attracting state of relay.
As shown in figure 5, the winding of double-winding motor is the concatenated connection type output of star, the U1 phase of the first winding
K11, K13, totally 6 actuation switches are closed state to K31, K33 of K21, K23 and W1 phase of V1 phase；The U2 phase of second winding
K41, K43, totally 6 actuation switches are closed state to K61, K63 of K51, K53 and W2 phase of V2 phase；Remaining is attracted switch and keeps
It disconnects.K11, K21 and K31 of first group of Three-phase magnetic latching relay of obvious first winding, third group three-phase magnetic keep relay
K13, K23 and K33 of device are closed state.
If desired the winding of double-winding motor be star parallel connection connection type export, it is only necessary to switch three-phase magnetic holding after
Electric appliance be attracted switch state be the first winding U1 phase K11, K12, K14, the K31 of K21, K22, K24 and W1 phase of V1 phase,
Totally 9 actuation switches are closure by K32, K34；K41, K42, K44 of the U2 phase of second winding, K51, K52, K54 and W2 of V2 phase
Totally 9 actuation switches are closure to K61, K62, K64 of phase；Remaining is attracted switch to disconnect.
If desired the winding of double-winding motor is the concatenated connection type output of triangle, it is only necessary to switch the holding of three-phase magnetic
Relay be attracted switch state be the first winding U1 phase K13, K15, K33, K35 of K23, K25 and W1 phase of V1 phase totally 6
A actuation switch is closure；K43, K45 of the U2 phase of second winding, K63, K65 of K53, K55 and W2 phase of V2 phase totally 6 suctions
Combination switch is closure；Remaining is attracted switch to disconnect.
If desired the winding of double-winding motor is that the connection type of triangle parallel connection exports, it is only necessary to switch the holding of three-phase magnetic
Relay is attracted K12, K14, the K15 for the U1 phase that the state switched is the first winding, K22, K24, K25 and W1 phase of V1 phase
Totally 9 actuation switches are closure by K32, K34, K35；K42, K44, K45 of the U2 phase of second winding, K52, K54, K55 of V2 phase
And totally 9 actuation switches are closure to K62, K64, K65 of W2 phase；Rest switch remains open.
The winding switching method embodiment of magneto equipped with winding electric control switching mechanism
The winding switching method embodiment of this magneto equipped with winding electric control switching mechanism is furnished with winding in above-mentioned
The magneto of automatically controlled switching mechanism carries out, and this method embodiment flow chart is as shown in fig. 6, include the following steps:
The initialization of step I, switch controller
Initialization including clock module, I/O mouth mold block, CAN communication module etc.；
Front winding is worked as in step II, switch controller detection
Switch controller detects the signal of the optocoupler sensor of each group Three-phase magnetic latching relay, judges the suction of each relay
Conjunction state thereby determines that current motor winding connection is star series connection, triangle series connection, star is in parallel, triangle is in parallel
In it is any；
Whether the connection type of detection winding and the instruction of master controller are identical, if both detections are identical, are judged as without reason
Hinder, perform the next step, it is on the contrary then report failure and return step II；
Step III, detection communication
Whether the CAN bus communication detected between switch controller and master controller is normal, and master controller is periodically to switching
Controller sends instruction, and switch controller gives master controller reply after receiving instruction, when on time switch controller does not receive
Instruction or master controller to master controller do not receive the response of switch controller at the appointed time, are judged as logical
Interrogate failure, switch controller and master controller report failure, to be handled in time, return step II；Conversely, communication it is normal, after
It is continuous to perform the next step；
Step IV, the master controller for detecting motor instruct and execute winding switching
If there is winding switching command, according to instruction, controls each group relay and be attracted, execute winding switching；Otherwise step is returned
Rapid II；
When executing winding switching, switch controller is initially switched off the electric current of the first winding, and the connection type of the second winding is constant,
But switch controller increases one times of its input current, keeps motor output torque constant；When the switching of the first winding finishes, switching is controlled
When device processed is started again to the first winding input current, while the second winding input current accordingly reduces, and motor is kept always to export
Torque is constant.When first winding input current restores normal, the input current of the second winding has been kept to initial value；Switch controller is opened
Begin the switching of the second winding, process is identical as the first winding handoff procedure.Motor will not be generated in winding handoff procedure in this way
Torque ripple.
Whether step V, detection winding switching succeed
The master controller instruction for detecting current winding connection and motor requires identical, handover success, return step II；
Otherwise report failure and return step II.
Above-described embodiment is only further described the purpose of the present invention, technical scheme and beneficial effects specific
A example, present invention is not limited to this.All any modifications made within the scope of disclosure of the invention, change equivalent replacement
Into etc., it is all included in the scope of protection of the present invention.
Claims (4)
1. a kind of magneto equipped with winding electric control switching mechanism, every phase of the three-phase windings of motor be 2 identical point around
Group；Each sub-winding has 2 extraction contacts, and three-phase shares 12 extraction contacts；The master controller of motor drives through motor servo
Device is connect with machine winding, the input current and torque of control winding；
The switching mechanism of this motor is 5 groups of Three-phase magnetic latching relays, and every group of Three-phase magnetic latching relay has the three of synchronous opening/closing
A identical actuation switch, the actuation switch of 5 groups of Three-phase magnetic latching relays are connected two-by-two, and each of motor three-phase sub-winding is drawn
The access contact that contact is respectively attracted switch with 2 out is connect；Switch controller is separately connected in each group Three-phase magnetic latching relay
Pull-in winding, control each group Three-phase magnetic latching relay be closing or opening state, make motor three-phase windings star connect,
One of in parallel or 4 kinds of connection types of triangle series, parallel；Main control of the switch controller through CAN bus and motor
Device connection, receives the instruction of the related switch motor winding connection of master controller；
The Three-phase magnetic latching relay includes pull-in winding (1), is attracted interlocking bar (3) and 3 actuation switches, 3 actuations
Three pairs of access contacts of switch are connected with each extraction contact of machine winding respectively, and three pairs of access contacts are with there are three connections
Piece；One end of three connection sheets, which respectively connects one in three pairs of access contacts and is fixed on, is attracted interlocking bar (3), three connections
The other end of piece then accesses with three Duis another holding interval of contact or is in contact, is attracted interlocking bar (3) one end and is attracted
The connection of coil (1) iron core, is attracted interlocking bar (3) connecting spring (2) one end, and the other end of spring (2) is fixed on this relay shell
Body；When pull-in winding (1) is powered the actuation of this group relay, it is attracted interlocking bar (3) and is pulled by the iron core of pull-in winding (1), band
Three connection sheets thereon it is mobile, connection sheet upper end is respectively affixed with corresponding access contact contacts respectively, and three connection sheets connect
Lead to three pairs of access contacts, 3 actuations close the switch；Conversely, when pull-in winding (1) powers off this group relay and disconnects, spring (2)
Make to be attracted interlocking bar (3) return, three connection sheet upper ends thereon are moved away from corresponding access contact, and three pairs of access contacts are broken
It opens, 3 actuation switches disconnect；
The Three-phase magnetic latching relay shell side installs 1 optocoupler sensor (5), connect with switch controller；It is attracted connection
The other end of lever (3) is equipped with baffle (4), when this group relay is attracted, is attracted interlocking bar (3) and is drawn by pull-in winding (1)
Dynamic, baffle (4) is in front of optocoupler sensor (5), stops its light, and optocoupler sensor (5) issues pickup signal feeding and cuts
Changer controller, whereby signal judges that this group relay is in attracting state to switch controller；Conversely, pull-in winding (1) power-off is not
When work, spring (2) makes to be attracted interlocking bar (3) return, and baffle (4) is moved away from front of optocoupler sensor (5), optocoupler sensor (5)
Light normally transmits and receives, and switch controller judges that this group relay is in disconnected according to the cut-off signal of this optocoupler sensor (5)
Open state.
2. the magneto according to claim 1 equipped with winding electric control switching mechanism, it is characterised in that:
The motor is configured with 2 identical windings, and 2 windings connect a set of identical 5 groups of three-phase magnetic in the same way respectively
The pull-in winding of the switching mechanism of guard relay, 2 sets of 5 groups of Three-phase magnetic latching relays is connect with switch controller.
3. the winding switching method of the magneto according to claim 1 or 2 equipped with winding electric control switching mechanism, special
Sign is to include the following steps:
The initialization of step I, switch controller
Initialization including clock module, I/O mouth mold block, CAN communication module；
Front winding is worked as in step II, switch controller detection
Switch controller detects the signal of the optocoupler sensor of each group Three-phase magnetic latching relay, judges the actuation shape of each relay
State, thereby determine that current motor winding connection be star series connection, triangle series connection, star be in parallel, in triangle parallel connection which
It is a kind of；
Whether the connection type of detection winding and the instruction of master controller are identical, if both detections are identical, are judged as fault-free, hold
Row in next step, on the contrary it is then report failure simultaneously return step II；
Step III, detection communication
Whether the CAN bus communication detected between switch controller and master controller is normal, and master controller is periodically to switching control
Device sends instruction, and switch controller gives master controller reply after receiving instruction, when on time switch controller does not receive master
The instruction of controller or master controller do not receive the response of switch controller at the appointed time, are judged as communication event
Barrier, switch controller and master controller report failure, to be handled in time, return step II；Conversely, communication is normal, continues to hold
Row is in next step；
Step IV, the master controller for detecting motor instruct and execute winding switching
If there is winding switching command, according to instruction, controls each group relay and be attracted, execute winding switching；Otherwise return step II；
Whether step V, detection winding switching succeed
The master controller instruction for detecting current winding connection and motor requires identical, handover success, return step II；Otherwise
Report failure and return step II.
4. the winding switching method of the magneto according to claim 3 equipped with winding electric control switching mechanism, feature
It is to include the following steps:
Motor is configured with 2 identical windings, and 2 windings connect a set of identical 5 groups of three-phase magnetic in the same way respectively
The pull-in winding of the switching mechanism of guard relay, 2 sets of 5 groups of Three-phase magnetic latching relays is connect with switch controller, switching
The energization or power-off of controller synchronously control pull-in winding；
When step IV executes winding switching, master controller is initially switched off the electric current of the first winding, and the connection type of the second winding is constant,
But master controller increases one times of its input current, keeps motor output torque constant；It is finished when the first winding switches, master controller
When starting again to the first winding input current, while the second winding input current accordingly reduces, and keeps the total output torque of motor
It is constant；When first winding input current restores normal, the input current of the second winding has been kept to initial value；Master controller starts second
The switching of winding, process are identical as the first winding handoff procedure.
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| CN207021795U (en) * | 2017-05-17 | 2018-02-16 | 蔚来汽车有限公司 | Motor stator component, motor and there is its electric automobile |
| US10944350B2 (en) * | 2017-07-26 | 2021-03-09 | Mitsubishi Electric Corporation | Motor drive device |
| JP6689465B2 (en) * | 2017-07-31 | 2020-04-28 | 三菱電機株式会社 | Electric motor drive and refrigeration cycle application equipment |
| CN108347205B (en) * | 2018-01-03 | 2020-10-30 | 广东美芝制冷设备有限公司 | Control circuit, permanent magnet synchronous motor and compressor |
| CN108336941B (en) * | 2018-01-03 | 2020-09-22 | 广东美芝制冷设备有限公司 | Control circuit, control method, permanent magnet synchronous motor, compressor and storage medium |
| CN112467913A (en) * | 2019-09-06 | 2021-03-09 | 中车时代电动汽车股份有限公司 | Double-winding permanent magnet motor |
| CN117394568B (en) * | 2023-12-11 | 2024-02-20 | 珠海凌达压缩机有限公司 | Three-phase motor and compressor |
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Effective date of registration: 20200728 Address after: 541004 D-10 and D-11, information industry park, Qixing hi tech Zone, Qixing District, the Guangxi Zhuang Autonomous Region Patentee after: GUILIN STARS SCIENCE AND TECHNOLOGY Co.,Ltd. Address before: 541004, District, Guilin, the Guangxi Zhuang Autonomous Region New District No. 5 community Patentee before: GUILIN GEELY STARS OIL-ELECTRIC HYBRID ENGINE Co.,Ltd. |