CN106655920A - Starting structure set and method of asynchronous starting permanent-magnet synchronous motor - Google Patents
Starting structure set and method of asynchronous starting permanent-magnet synchronous motor Download PDFInfo
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- CN106655920A CN106655920A CN201710052578.5A CN201710052578A CN106655920A CN 106655920 A CN106655920 A CN 106655920A CN 201710052578 A CN201710052578 A CN 201710052578A CN 106655920 A CN106655920 A CN 106655920A
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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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/20—Arrangements for starting
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Abstract
A starting set and method of an asynchronous starting permanent-magnet synchronous motor comprises an asynchronous starting permanent-magnet synchronous motor main body and a combined control system thereof and is characterized in that two groups of independent windings are arranged between phases of the asynchronous starting permanent-magnet synchronous motor and are led out by nine leading-out lines, a winding combination structure of the asynchronous starting permanent-magnet synchronous motor is changed under the setting of a combined structure of the control system, low-current starting stable speed rising is achieved by a three-step starting structure mode, the starting and the running are both in star-like winding connection method, the high-efficiency performance of the asynchronous starting permanent-magnet synchronous motor is ensured, and a demagnetization phenomenon of a permanent-magnet material caused by impact of a large current during instant starting of the asynchronous starting permanent-magnet synchronous motor is effectively prevented.
Description
Technical field
The present invention relates to a kind of startup structure of asynchronous starting permasyn morot is arranged and method.
Background technology
With society progress and development, the mankind for low-carbon environment-friendly requirement with when all increase, rare-earth permanent magnet motor because
Its efficient performance is used in more and more widely each machine industry, and its application is broadly divided into big two class, VFC
Drive and asynchronous starting runs simultaneously two classes, its latter is also referred to as self-starting magneto.For self-starting magneto, also
It is that asynchronous starting synchronous operation magneto can not be using star delta reduced-voltage starting mode, because the work side of permagnetic synchronous motor
Formula is worked in design using star connection, if worked using delta connection, triple-frequency harmonics is high, meanwhile, because of three times
Harmonic voltage harmonic electric current produced by harmonic wave directly influences the efficiency and service behaviour of motor, directly results in magneto
Efficiency is low and the characteristics of service behaviour difference because winding cannot be made on startup using the magneto of star connection work
With star delta reduced-voltage starting method, therefore start immediate current and impact big problem for the startup of heavy-duty motor there is, this
Kind of dash current is directly opposite impact permanent-magnet magnetic field, so as to cause permanent magnet magnet loss phenomenon to occur, causes the motor cannot normal work
Make, at present for the reduced-voltage starting of induction conductivity there are following five kinds of modes：1st, star delta reduced-voltage starting mode, using the method
The winding method of operation of delta connection is can be only applied to, while being not met by starting the working time for a long time, it is impossible to should
On asynchronous starting permasyn morot；2 tandem reactor methods, the big high cost of this method volume, for batch makes
Industry hardly results in application；3rd, series resistor method, this method application is inconvenient, and resistance easily generates heat, and there is safety
Hidden danger, limits application；4th, extend-triangle method, method can be only applied to the motor of delta connection operation in this,
The startup of self-start permanent-magnet synchronous cannot be applied to；5th, IGCT soft-start method, this method takes up room greatly, high cost.
Thus develop a kind of small volume, low cost, safe and reliable asynchronous and synchronous motor and its start setting and method, at present should be
The problem of solution.
The content of the invention
In view of the deficiencies in the prior art, it is an object of the invention to provide a kind of using change self-starting magneto winding
Structure carries out a kind of low current of rational design combination, rotating speed lifting and smoothly starts combining structure.
To achieve these goals, the technical scheme is that a kind of startup knot of asynchronous starting permasyn morot
Structure is arranged and method, including combination, relay, delay switch, the asynchronous starting permanent magnet synchronous electric of the multigroup independent winding of phase winding
Motivation main body.Described asynchronous starting permasyn morot main body is provided with two groups of self-existent phase windings, two groups of windings
Drawn outside asynchronous starting permasyn morot with nine lead-out wires U1, U2, U3, V1, V2, V3, W1, W2, W3, phase winding
Nine lead-out wires and control system are combined into a combination and arrange main body, under the compound action of control system, make asynchronous starting forever
Magnetic-synchro motor forms three step startup structures, there is the startup optimization textural association mode that its corresponding different structure is arranged,
The startup optimization frame mode of the described step different structure of asynchronous starting permasyn morot three combination is：First step
（Fig. 1）, U, V, W three-phase is each provided with two groups of windings, and the head of U phase windings 1 is U1, and afterbody is U2, and the head of winding 2 is U3,
Afterbody is O1, and the head of V phase windings 3 is V1, and afterbody is V2, and the head of V phase windings 4 is V3, and afterbody is O1, the head of W phase windings 5
Portion is W1, and afterbody is W2, and the head of W phase windings 6 is W3, and afterbody is O1, under controller action, the head U1 of winding 1 and three
Phase power supply U phases connect, and the afterbody U2 of winding 1 and the head U3 of winding 2 connect, and the afterbody of winding 2 is O1 points, the head of winding 3
V1 connects with three phase mains V phases, and the head V3 of afterbody V2 and winding 4 connects, afterbody interface be O1 points, the head W1 of winding 5 and
Three phase mains W phases connect, and the afterbody W2 of winding 5 and the head W3 of winding 6 connect, and afterbody is O1 points, and O1 points are winding 2,4,6
Afterbody, forms points of common connection, is combined into a kind of star connection startup structure of many numbers of turn of high phase resistance, and the U phase winding numbers of turn are
Winding 1 plus the number of turn of winding 2, the V phase windings number of turn is winding 3 plus the number of turn of winding 4, and the W phase windings number of turn is that winding 5 adds the number of turn of winding 6,
The star winding of the big resistance of low current phase winding that the frame mode combination realizes asynchronous starting permasyn morot starts
The first step of mode；The second step frame mode of startup connects for Fig. 2, the head U1 of winding 1 and the head U3 of winding 2,
External three phase mains U phases, the afterbody U2 and O2 of winding 1 connect, and the afterbody of winding 2 is O1；The head V1 of winding 3 and winding 4
Head V3 connects, external three phase mains V phases, and the afterbody V2 and O2 of winding 3 connect, and the afterbody of winding 4 is O1；The head of winding 5
The head W3 of W1 and winding 6 connects, external three phase mains W phases, and the afterbody W2 and O2 of winding 5 connect, and the afterbody of winding 6 is O1,
O1, O2 point is points of common connection, and this group combination forms one group of low-resistance double star winding combination startup structure of few number of turn, and its is every
The phase winding number of turn is the half of the first step phase winding number of turn, and winding cross section product is the two of first step Starting mode sectional area
Times；The three-phase windings frame mode of the third step of startup, connection are identical with the second step of startup, and the step is asynchronous starting
The continuity step that the low current of permasyn morot starts, is that asynchronous starting permasyn morot switches from asynchronous and synchronous
Step, that is, from the switching started to operation.
Further, a kind of startup structure of described asynchronous starting permasyn morot is arranged and method, its control
System architecture be by power switch QF, time relay KT, relay KM1, KM2, KM3, KM4, start knob SB2, shut down by
Button SB1, safeties FU and a kind of combination of the special asynchronous starting permasyn morot by nine winding leading-out wire ends
Setting is formed.Fig. 3 is control system, and three phase mains W, V, U and power switch QF enter electricity side and connect, and go out electricity side QFW, QFV, QFU
Connect with enter electricity side A, B, C of relay KM1, in the middle of power switch QF and relay KM1, below control circuit structure with one
Individual electrical circuit is described：Circuit V phases are entered electricity side and are connected by contact 18 and stop botton SB1, stop botton SB1 go out electricity side and
Contact 20 connects, at the same respectively with power on button SB2 enter electricity side, the electricity side of entering of the self-locking contact 6 of relay KM1 connects, open
Machine button SB2's goes out electricity side's connection contact 21, and the electricity side that goes out of relay KM1 self-lockings contact 6 connects contact 22, contact 21 and contact
22 are connected, and the electricity side of entering of the coil 13 of relay KM1 connects contact 21, and the electricity side that goes out of the coil 13 of relay KM1 connects
Point 26, the electricity side of entering of the normally closed point 11 of relay KM3 connects contact 22, and the normally closed point 12 for going out electricity side and relay KM4 enters electricity
Side is connected, the normally closed point 12 of relay KM4 go out electricity side and contact 23 connects, the normally closed point 9 of relay KM2 enter electricity side with
Contact 22 connects, the normally closed point 9 of relay KM2 go out electricity side and contact 24 connects, the normally closed points 7 of time relay KT enter electricity side
It is connected with contact 23, the electricity side that goes out of the normally closed point 7 of time relay KT is connected with the electricity side of entering of the coil 14 of relay KM2
Connect, the electricity side that goes out of the coil 14 of relay KM2 is connected with contact 26, the coil 17 of time relay KT enters electric side and contact
23 are connected, the electricity side that goes out of the coil 17 of time relay KT is connected with contact 26, and the opened point 8 of time relay KT is entered
Electricity side is connected with contact 24, and the electricity side that goes out of the opened point 8 of time relay KT is connected with contact 25, and relay KM3's is normal
The electricity side of entering for prescribing 10 is connected with contact 24, and the electricity side that goes out of the opened point 10 of relay KM3 is connected with contact 25, relay
The electricity side of entering of the coil 15 of KM3 is connected with contact 25, and the electricity side that goes out of the coil 15 of relay KM3 is connected with contact 26, after
The electricity side of entering of the coil 16 of electrical equipment KM4 is connected with contact 25, and the electricity side that goes out of the coil 16 of relay KM4 is connected with contact 26
Connect, the electricity side that goes out of safeties FU is connected on contact 19 with U phases, and the electricity side of entering of safeties FU is connected with contact 26, relay
Device KM1 enter electricity side A, B, C three phase mains and power switch QF go out the corresponding connection of electricity side three phase mains QFU, QFV, QFW,
Relay KM1 go out electricity side three phase mains KM1U1, KM1V1, KM1W1 respectively with contact 27,28,29 corresponding connections, it is asynchronous to open
Three phase mains lead-out wire U1, V1, W1 of dynamic permagnetic synchronous motor connects respectively with the correspondence of contact 27,28,29, relay KM3's
Enter electricity side three phase mains a, b, c to connect with contact 27,28,29 respectively, relay KM3's goes out electricity side KM3U3, KM3V3, KM3W3
Respectively with contact 33,34,35 correspondence connect, lead-out wire U3, V3, W3 and contact 33 of asynchronous starting permasyn morot,
34th, 35 correspondence connection, KM2U3, KM2V3, KM2W3 of relay KM2 connect respectively with the correspondence of contact 33,34,35, relay
Three phase mains KM2Wa, KM2Vb, KM2Uc of KM2 connects respectively with the correspondence of contact 30,31,32, the three phase mains of relay KM4
KM4U2, KM4V2, KM4W2 connect respectively with the correspondence of contact 30,31,32, and the three-phase current output terminal of relay KM4 is connected to O2 points,
And three-phase connects, three lead-out wires W2, V2, U2 of asynchronous starting permagnetic synchronous motor and the correspondence of contact 30,31,32 connect.
Advantages of the present invention：1st, startup of the present invention to asynchronous starting permasyn morot adopts the step of star winding three
The steady raising speed of low current starts, and first step is the startup of many number of turn star windings of low current, and second step is the few circle of high torque (HT)
The switching of number star winding starts, and third step is the asynchronised handover synchronization fortune into rated point operating current run-in synchronism speed
Capable startup --- the method for operation, the method is when first step starts according to formula：IST=IKW/IST, IST is startup in formula
Electric current, IKW is work(electric current, and IST is total leakage impedance during startup, IST=, all-in resistance when RST is to start, XST
Total leakage reactance during to start, XST determines according to motorized designs electrical quantity, is fixed value for every single motor, and occupies ratio
Little, for the threephase asynchronous of Jing 15KW-2 levels, XST=0.1162, RST=R1+R2, R1 are winding D.C. resistance, by around
The resistivity of group, winding cross section are accumulated and the number of turn is determined that R2 is induction reactance, is determined by the number of turn, and sectional area is big, and R1 and R2 is relatively high,
The little R1 of sectional area is big, depending on resistivity is by material, clearly adds very much the number of turn, reduces line footpath, and R1 and R2 is substantially increased.According to
For the threephase asynchronous of 15KW-2 levels, rated voltage is 380V, rated point work under frequency 50HZ state, then using figure
1 mode star winding is directly initiated, and by design parameter IST1=is obtained==
0.544；Number of turn Starting mode then IST2=is doubled using the few sectional area of Fig. 2 modes star winding==1.7, then IST1=0.544, IST2=1.7, IST2 are 3.12 times of IST1, then adopt
The sectional area of Fig. 1 mode star windings is the half of Fig. 2 mode star winding sectional areas, and the number of turn is Fig. 1 mode star windings
One times, starting current can decline 3.12 times, so for asynchronous starting permasyn morot, start moment impact
Electric current is just less, and the magnetic of the moment induced field produced by such stator impacts just less relative to the magnetic impact of p-m rotor,
Magnetic impact demagnetization phenomenon would not occur, the work of asynchronous starting permasyn morot normal table is effectively guaranteed, to forever
For magnet, the strong magnetic impact of moment can cause the magnet loss phenomenon of permanent magnet to occur；2nd, method is started using the step of star winding three,
Start-up course rotating speed can be made steadily to increase relatively, especially in the first step stage due to permitting using the scheme of many numbers of turn, phase winding
Perhaps the accelerating region for carrying out first step of long period works and the temperature rise of asynchronous starting permasyn morot is not high, if star three
Angle starts, then do not allow slowtime when starting initial oversize, and otherwise motor stator temperature rise anxious can increase, while star winding is opened
The efficient performance of motor of asynchronous starting permasyn morot is ensure that dynamic and star winding effective operation, is reduced because of permanent magnet
Excitation, harmonic wave and circulation caused by air-gap field cause magneto hydraulic performance decline.And the technical scheme practical application cost
Low, small volume, fault rate is low, safe and reliable, and the startup for efficiently solving high-power asynchronous starting permasyn morot shows
There is the technical problem of presence.
Description of the drawings
Fig. 1 is that star connection starts winding figure.
Fig. 2 is that star connection runs winding figure.
Fig. 3 is control system figure.
Specific embodiment
The technical program is that the low current rotating speed of three step star winding connection asynchronous starting permasyn morots is steady
The startup optimization method of raising speed, starts star connection when first step machine winding adopts Fig. 1 star phase winding numbers of turn for operation
One times of the phase winding number of turn, during startup star connection phase winding sectional area be operation when star connection phase winding half, when turn
When speed reaches 200 ~ 300 turns, in the presence of control system Fig. 3, asynchronous starting permagnetic synchronous motor Working winding is switched to
Two step states.Fig. 2, star connection starts half of the phase winding number of turn for first step star connection phase winding, and star connects
Method phase winding sectional area is a times of first step star connection phase winding sectional area, and now working stage rotating speed steadily rises,
Staring torque is increased, and when rotating speed rises the 93 ~ 96% of synchronous rotational speed is caused, and torque is designed more than asynchronous starting permasyn morot
During nominal operation torque, into third step, synchronous operation step is automatically switched to, realize that low current starts, Effec-tive Function reaches
To the purpose of small volume low cost.Its specific works rate-determining steps is as follows：During startup, power switch QF closure, press start by
SB2 is turned round, relay KM1 coils 13, relay KM2 coils 14, time relay KT coils 17 are powered, and KM1 self-lockings contact 6 is closed
Close, unclamp SB2, now the total contact closures of relay KM1, A and KM1U1, B and KM1V1, C and KM1W1 conductings, relay KM2 master
Contact closure, KM2Ua and KM2U3 are turned on, and KM2Vb and KM2V3 is turned on, and KM2Wc and KM2W3 is turned on, and are formed star connection and are started
Winding（Fig. 1）Combination drives asynchronous starting permasyn morot to start, and realizes first step --- and low current starts;
After time-delay relay KT coils 17 are turned on, the time delay disjunction of break contact 7 that KT time delays disconnect, the dead electricity of relay KM2 coils 14
Disconnect, the normally closed points 9 of relay KM2 are then closed, the timing closing of moving together contact 8 of KT timing closings, relay KM3, KM4 coil 15
Turn on 16, relay KM3 opened points 10 are closed, now relay KM1, KM3, KM4 work on main circuit, its corresponding master touches
Head is closed, and the normally closed point 11 of relay KM3, the normally closed point 12 of relay KM4 disconnect, the power-off of coil 14 of relay KM2
Do not work, corresponding main contact disconnects, the power-off of coil 17 of time relay KT, relay completes work, asynchronous starting permanent magnetism
Synchronous motor presses double star connection service chart（Fig. 2）Situation works, relay KM1 work main contact closure, electricity on main circuit
Machine winding leading-out wire U1, V1, W1 obtain three phase mains, and relay KM3 main contacts closure, a and KM3U3 is turned on, and b and KM3V3 leads
Logical, c and KM3W3 is turned on, relay KM4 main contacts closure, the common point O2 conductings of KM4U2, KM4V2, KM4W2, asynchronous starting
Permasyn morot enters asynchronous operation winding working condition, and this state incision moment, asynchronous starting permanent magnet motor is still
In working condition is started, only because now the phase winding number of turn starts winding relative to star connection before switching（Fig. 1）Work
Half is reduced under situation, winding conducting wire sectional area doubles, now asynchronous starting permanent magnet motor torsion suddenly increases, rotating speed also wink
Between improve.When the 93% ~ 96% of turn up synchronous rotational speed, when torque is more than rated operation point torque, permanent magnetism is automatically switched to same
Step work, realizes the normal operation of asynchronous starting permasyn morot, completes the second step of startup.It is of the present invention
Asynchronous starting permasyn morot operate to three steps from starting to：First step is the asynchronous low electricity of many numbers of turn of star winding
The structure setting that stream starts, when rotating speed reaches 200 ~ 400 turns, double star is entered into second step using switching winding method
The startup of winding asynchronous high torque (HT), when rotating speed reaches synchronous rated speed 93 ~ 96%, and torque is more than nominal torque, into the 3rd
Step, it is asynchronous to synchronous synchronous operation of automatically switching, realize that the low current of asynchronous starting permasyn morot starts balance and rises
The effect of fast Effec-tive Function.
Claims (3)
1. a kind of startup structure of asynchronous starting permasyn morot is arranged and method, including asynchronous starting synchronous permanent-magnet motor
Owner's body and control asynchronous starting permasyn morot, are arranged by the control structure of three step low current startup optimizations, and it is special
Levy and be：Be provided between the described each phase of asynchronous starting permasyn morot main body for two groups it is self-existent around
Group, is altogether 6 groups, and 6 groups of windings of three-phase are with nine lead-out wires（U1）、（U2）、(U3)、（V1）、（V2）、（V3）、（W1）、（W2）、
（W3）Draw outside asynchronous starting permasyn morot, nine lead-out wires and the control system of phase winding arrange master into a combination
Body, under the compound action of control system, makes asynchronous starting permasyn morot form three step startup structure modes, while
With the startup optimization textural association that corresponding different structure is arranged, the described step of asynchronous starting permasyn morot three is not
It is with the startup optimization frame mode of textural association：First step star connection starts winding figure:（U）、（V）、（W）Three-phase respectively sets
Two groups of windings are equipped with,（U）Phase winding（1）Head be（U1）, afterbody is（U2）, winding（2）Head be（U3）, afterbody is
（O1）,（V）Phase winding（3）Head be（V1）, afterbody is（V2）,（V）Phase winding（4）Head be（V3）, afterbody is（O1）,
（W）Phase winding（5）Head be（W1）, afterbody is（W2）,（W）Phase winding（6）Head be（W3）, afterbody is（O1）, in control
Under device effect processed, winding（1）Head（U1）And three phase mains（U）Connect, winding（1）Afterbody（U2）And winding（2）'s
Head（U3）Connect, winding（2）Afterbody be（O1）Point, winding（3）Head（V1）And three phase mains（V）Connect, afterbody
（V2）And winding（4）Head（V3）Connect, afterbody interface is（O1）Point；Winding（5）Head（W1）And three phase mains（W）Phase
Connect, winding（5）Afterbody（W2）And winding（6）Head（W3）Connect, afterbody is（O1）Point,（O1）Point is winding（2）、
（4）、（6）Afterbody, formed points of common connection, be combined into a kind of star connection startup structure of many numbers of turn of high phase resistance,（U）Phase
Umber of turn is winding（1）Plus winding（2）The number of turn,（V）The phase winding number of turn is winding（3）Plus winding（4）The number of turn,（W）Phase winding
The number of turn is winding（5）Plus winding（6）The number of turn, the frame mode combination realizes the low current of asynchronous starting permasyn morot
The first step of the star winding Starting mode of the big resistance of phase winding, the second step frame mode of startup is double star connection fortune
Row winding:Winding（1）Head（U1）And winding（2）Head（U3）Connect, external three phase mains（U）Phase, winding（1）Tail
Portion（U2）With（O2）Connect, winding（2）Afterbody be（O1）；Winding（3）Head（V1）And winding（4）Head（V3）Phase
Connect, external three phase mains（V）Phase, winding（3）Afterbody（V2）With（O2）Connect, winding（4）Afterbody be（O1）;Winding（5）
Head（W1）And winding（6）Head（W3）Connect, external three phase mains（W）Phase, winding（5）Afterbody（W2）With（O2）Phase
Connect, winding（6）Afterbody be O1,（O1）、（O2）Point is points of common connection, and it is low-resistance double that this group combination forms one group of few number of turn
Star winding combines startup structure, and it is the half of the first step phase winding number of turn per the phase winding number of turn, and winding cross section product is
Two times of first step Starting mode sectional area, the of the three-phase windings frame mode of the third step of startup, connection and startup
Two steps are identical, the step for asynchronous starting permasyn morot low current start continuity step, be asynchronous starting forever
Magnetic-synchro motor from asynchronous and synchronous switch step, that is, from start to operation switching.
2. a kind of startup structure of asynchronous starting permasyn morot according to claim 1 is arranged and method, and it is special
Levy and be：Described asynchronous starting Control System of Permanent Magnet Synchronous Motor structure is by power switch（QF）, the time relay
（KT）, relay（KM1）、（KM2）、（KM3）、（KM4）, knob of starting shooting（SB2）, shut down knob（SB1）, safeties（FU）With
What a kind of special asynchronous starting permasyn morot combination for having nine winding leading-out wire ends was arranged, Fig. 3 is control
System, three phase mains（W）、（V）、（U）And power switch（QF）Enter electricity side to connect, go out electricity side（QFW）、（QFV）、（QFU）With after
Electrical equipment（KM1）Enter electricity side（A）、（B）、（C）Connect, in power switch（QF）And relay（KM1）Centre, circuit（V）Xiang You
Contact（18）And stop botton（SB1）Enter electricity side to connect, stop botton（SB1）Go out electric side and contact（20）Connect, the same to time-division
Other and power on button（SB2）Enter electricity side, relay（KM1）Self-locking contact（6）Electricity side of entering connect, power on button（SB2）
Go out electricity side connection contact（21）, relay（KM1）Self-locking contact（6）Go out electricity side connection contact（22）, contact（21）With connect
Point（22）It is connected, relay（KM1）Coil（13）Enter electricity side connection contact（21）, relay（KM1）Coil（13）
Go out electricity side connection contact（26）, relay（KM3）Normally closed point（11）Enter electricity side connection contact（22）, go out electric side and relay
Device（KM4）Normally closed point（12）Electricity side of entering be connected, relay（KM4）Normally closed point（12）Go out electric side and contact（23）Phase
Connect, relay（KM2）Normally closed point（9）Enter electric side and contact（22）Connect, relay（KM2）Normally closed point（9）Go out electricity
Side and contact（24）Connect, the time relay（KT）Normally closed point（7）Enter electric side and contact（23）It is connected, the time relay
（KT）Normally closed point（7）Go out electric side and relay（KM2）Coil（14）Electricity side of entering be connected, relay（KM2）Line
Circle（14）Go out electric side and contact（26）It is connected, the time relay（KT）Coil（17）Enter electric side and contact（23）It is connected
Connect, the time relay（KT）Coil（17）Go out electric side and contact（26）It is connected, the time relay（KT）Opened point（8）
Enter electric side and contact（24）It is connected, the time relay（KT）Opened point（8）Go out electric side and contact（25）It is connected, after
Electrical equipment（KM3）Opened point（10）Enter electric side and contact（24）It is connected, relay（KM3）Opened point（10）Go out electricity side
And contact（25）It is connected, relay（KM3）Coil（15）Enter electric side and contact（25）It is connected, relay（KM3）'s
Coil（15）Go out electric side and contact（26）It is connected, relay（KM4）Coil（16）Enter electric side and contact（25）It is connected
Connect, relay（KM4）Coil（16）Go out electric side and contact（26）It is connected, safeties（FU）Go out electricity side and（U）Phase
It is connected on contact（19）, safeties（FU）Enter electric side and contact（26）It is connected, relay（KM1）Enter electricity side（A）、
（B）、（C）Three phase mains and power switch（QF）Go out electricity side's three phase mains（QFU）、（QFV）、（QFW）Corresponding connection, relay
Device（KM1）Go out electricity side's three phase mains（KM1U1）、（KM1V1）、（KM1W1）Respectively and contact（27）、（28）、（29）It is corresponding
Connection, the three phase mains lead-out wire of asynchronous starting permagnetic synchronous motor（U1）、（V1）、（W1）Respectively and contact（27）、（28）、
（29）Correspondence connection, relay（KM3）Enter electricity side's three phase mains（a）、（b）、（c）Respectively and contact（27）、（28）、（29）Phase
Connect, relay（KM3）Go out electricity side（KM3U3）、（KM3V3）、（KM3W3）Respectively and contact（33）、（34）、（35）Correspondence connects
Connect, the lead-out wire of asynchronous starting permasyn morot（U3）、（V3）、（W3）And contact（33）、（34）、（35）Correspondence connection,
Relay（KM2）'s（KM2U3）、（KM2V3）、（KM2W3）Respectively and contact（33）、（34）、（35）Correspondence connection, relay
（KM2）Three phase mains（KM2Wa）、（KM2Vb）、（KM2Uc）Respectively and contact（30）、（31）、（32）Correspondence connection, relay
（KM4）Three phase mains（KM4U2）、（KM4V2）、（KM4W2）Respectively and contact（30）、（31）、（32）Correspondence connection, relay
（KM4）Three-phase current output terminal be connected to（O2）Point, and three-phase connects, three lead-out wires of asynchronous starting permagnetic synchronous motor
（W2）、（V2）、（U2）And contact（30）、（31）、（32）Correspondence connection, described asynchronous starting permasyn morot control system
System drives three steps：First step is arranged for the startup structure combination of many number of turn star windings of low current；Second step is switching
The startup structure combination of the few number of turn star winding of high torque (HT) is arranged；Third step is rated point operating current run-in synchronism speed
The startup of asynchronous adaptive switched synchronous operation --- operating structure is arranged, and its combining structure is arranged and second step structure setting phase
Together.
3. a kind of startup structure of asynchronous starting permasyn morot according to claim 1 is arranged and method, and it is special
Levy and be：The described step star winding connection asynchronous starting permasyn morot of asynchronous starting permasyn morot three
The startup optimization method of the steady raising speed of low current rotating speed, starts first step machine winding and starts winding, star using star connection
One times of the star connection phase winding number of turn when shape phase winding number of turn is operation, star connection phase winding sectional area is operation during startup
When star connection phase winding half, when rotating speed reaches 200 ~ 300 turns, in the presence of control system, asynchronous starting permanent magnetism
Synchronous motor Working winding is switched to second step state --- and star connection runs winding, and star connection starts the phase winding number of turn
For the half of first step star connection phase winding, and star connection phase winding sectional area is first step star connection phase winding
One times of sectional area, now working stage rotating speed steadily rise, staring torque increase, when rotating speed rise cause synchronous rotational speed 93 ~
96%, when torque designs nominal operation torque more than asynchronous starting permasyn morot, then automatically switch into third step
Synchronous operation step, realizes that low current starts, and Effec-tive Function reaches the purpose of small volume low cost, its specific works control step
It is rapid as follows：During startup, power switch（QF）Closure, presses start knob（SB2）, relay（KM1）Coil（13）, relay
（KM2）Coil（14）, the time relay（KT）Coil（17）It is powered,（KM1）Self-locking contact（6）Closure, unclamps（SB2）, now
Relay（KM1）Total contact closure,（A）With（KM1U1）、（B）With（KMIV1）、（C）With（KM1W1）Conducting, relay（KM2）
Main contact is closed,（KM2Ua）With（KM2U3）Conducting,（KM2Vb）With（KM2V3）Conducting,（KM2Wc）With（KM2W3）Conducting, shape
Starting winding composite structure into star connection drives asynchronous starting permasyn morot to start, and realizes first step --- and it is low
Current start；In time-delay relay（KT）Coil（17）After conducting, the time relay（KT）Normally closed point（7）Time delay disjunction, after
Electrical equipment（KM2）Coil（14）Dead electricity disconnects, relay（KM2）Normally closed point（9）Then close, the time relay（KT）Opened point
（8）Timing closing, relay（KM3）、（KM4）Coil（15）With（16）Conducting, relay（KM3）Opened point（10）Closure, this
When main circuit on relay（KM1）、（KM3）、（KM4）Work, its corresponding main contact is closed, relay（KM3）It is normally closed
Point（11）, relay（KM4）Normally closed point（12）Disconnect, relay（KM2）Coil（14）Power-off does not work, corresponding master
Contact disconnects, the time relay（KT）Coil（17）Power-off, relay completes work, and asynchronous starting permasyn morot is pressed
Double star connection service chart situation works, relay on main circuit（KM1）Work main contact closure, machine winding lead-out wire
（U1）、（V1）、（W1）Obtain three phase mains, relay（KM3）Main contact is closed,（a）With（KM3U3）Conducting,（b）With
（KM3V3）Conducting,（c）With（KM3W3）Conducting, relay（KM4）Main contact is closed,（KM4U2）、（KM4V2）、（KM4W2）'s
Common point（O2）Conducting, asynchronous starting permasyn morot enters asynchronous operation winding working condition, this state incision moment,
Asynchronous starting permanent magnet motor is in starting working condition, only because now the phase winding number of turn is relative to star before switching
Connection to start and reduce half under winding working condition, and winding conducting wire sectional area doubles, now asynchronous starting permanent magnet motor
Torsion suddenly increases, and rotating speed also improve by moment, completes the second step of startup, when the 93% ~ 96% of turn up synchronous rotational speed, torque
More than permanent-magnet synchronous work during rated operation point torque, is automatically switched to, asynchronous starting permasyn morot is being realized just
Often operation, the motor of the present invention operates to three steps from starting to：First step is opened for the asynchronous low current of many numbers of turn of star winding
Dynamic structure setting, when rotating speed reaches 200 ~ 400 turns, enters star winding different into second step using switching winding method
The startup of step high torque (HT), when rotating speed reaches synchronous rated speed 93 ~ 96%, and torque is more than nominal torque, then into the 3rd step
Suddenly, asynchronous to synchronous synchronous operation of automatically switching, the low current for realizing asynchronous starting permasyn morot starts balance raising speed
The effect of Effec-tive Function.
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| CN201710052578.5A CN106655920A (en) | 2017-01-24 | 2017-01-24 | Starting structure set and method of asynchronous starting permanent-magnet synchronous motor |
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| CN201710052578.5A CN106655920A (en) | 2017-01-24 | 2017-01-24 | Starting structure set and method of asynchronous starting permanent-magnet synchronous motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107302295A (en) * | 2017-08-25 | 2017-10-27 | 亿德机电科技（福建）有限公司 | Permanent-magnetic synchronous motor rotor with cut-out winding function |
| CN111525767A (en) * | 2019-07-29 | 2020-08-11 | 山东东普永磁电机有限公司 | Fan direct-drive asynchronous starting permanent magnet synchronous motor |
| CN111669000A (en) * | 2019-03-08 | 2020-09-15 | 美的威灵电机技术（上海）有限公司 | Control circuit of rotor, rotor assembly, motor and compressor |
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| CN111669000A (en) * | 2019-03-08 | 2020-09-15 | 美的威灵电机技术（上海）有限公司 | Control circuit of rotor, rotor assembly, motor and compressor |
| CN111669000B (en) * | 2019-03-08 | 2021-09-21 | 美的威灵电机技术（上海）有限公司 | Control circuit of rotor, rotor assembly, motor and compressor |
| CN111525767A (en) * | 2019-07-29 | 2020-08-11 | 山东东普永磁电机有限公司 | Fan direct-drive asynchronous starting permanent magnet synchronous motor |
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Application publication date: 20170510 |