CN206294034U - A kind of electromechanical multiphase DC square-wave motor of the mixing without arc commutation - Google Patents
A kind of electromechanical multiphase DC square-wave motor of the mixing without arc commutation Download PDFInfo
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- CN206294034U CN206294034U CN201621269801.9U CN201621269801U CN206294034U CN 206294034 U CN206294034 U CN 206294034U CN 201621269801 U CN201621269801 U CN 201621269801U CN 206294034 U CN206294034 U CN 206294034U
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- 230000003139 buffering effect Effects 0.000 claims description 6
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Abstract
The utility model discloses a kind of electromechanical multiphase DC square-wave motor of the mixing without arc commutation, the mechanical part of the multiphase DC square-wave motor reversing arrangement includes：Brush and commutator, drawn by brush per phase armature winding, commutator includes one or more commutator segment groups, one of commutator segment group is by positive source commutator segment, afterflow commutator segment I, power cathode commutator segment and afterflow commutator segment II are constituted, they pass through mica-sheet insulation each other, circumferentially it is arranged into 360 ° of complete electrical angle cycles, shared mechanical angle is 360 °/P, the electrical angle of each positive source commutator segment and power cathode commutator segment is 120 °, mechanical angle is 120 °/P, each afterflow commutator segment I, afterflow commutator segment II and its front and rear insulating concrete mica plate electrical angle are 60 °, mechanical angle is 60 °/P, commutator is fixed on stator side according to position of magnetic pole, whole windings share one.
Description
Technical field
The utility model is related to the technical field of design of electrical motor and manufacture, and more particularly to electromechanical mixing is without the more of arc commutation
Phase direct current square-wave motor.
Background technology
At present, Traditional DC motor realizes commutation using the mechanical commutation device that commutator and brush are constituted, non-ideal
In the case of, counter electromotive force and electric current are had by the armature coil of brush short circuit, there is overvoltage when it departs from brush, and produce
Spark.In addition, in order to prevent from producing electric arc during commutation, causing ring fire failure, it is necessary to commutator segment voltage is limited in into more than ten
Within volt, so commutator segment quantity is various, cause commutator structure complicated, with high costs, the difficult direct current generator that commutates is usual
Also need to be equipped with commutating pole or auxiliary commutating brush, further increase cost.Because tradition machinery reversing arrangement hardly may be used
The presence spark for avoiding, and be possible to produce electric arc, while also exist complex structure, it is with high costs the shortcomings of, so using electricity
The brshless DC motor of sub- commutator arises at the historic moment, but electronic commutator increased system cost, and control is complicated, in strong electromagnetic
Interference occasion reliability is relatively low.
Chinese invention patent CN1455500A " the power supply reversing arrangement of multiphase DC motor " proposes a kind of power supply and changes
To device, the device is using machinery, electronics mixing commutation, it is not necessary to extra controller and converters, and attempts
Electric arc and spark problems in tradition machinery reversing arrangement are solved, but actual effect shows that it is difficult to suppress commutation arc and spark,
And a commutator is equipped with, it is necessary to more commutator segment and diode continuousing flow bridge per phase winding in this reversing arrangement
Arm.
It is desirable to thering is a kind of multiphase DC square-wave motor of the electromechanical mixing without arc commutation to overcome or at least mitigating existing
There is the drawbacks described above of technology.
The content of the invention
The purpose of this utility model is to provide a kind of multiphase DC square-wave motor of the electromechanical mixing without arc commutation to overcome
The above-mentioned problems in the prior art.
To achieve the above object, the utility model provides a kind of electromechanical multiphase DC square-wave motor of the mixing without arc commutation,
The mechanical part of the multiphase DC square-wave motor reversing arrangement includes：Brush and commutator, brush is passed through per phase armature winding
Draw, commutator includes one or more commutator segment groups, and one of commutator segment group is by positive source commutator segment, afterflow commutator segment
Ith, power cathode commutator segment and afterflow commutator segment II are constituted, and they by mica-sheet insulation, have circumferentially been arranged into each other
360 ° of whole electrical angle cycles, shared mechanical angle is 360 °/P, each positive source commutator segment and power cathode commutator segment
Electrical angle is 120 °, and mechanical angle is 120 °/P, each afterflow commutator segment I, afterflow commutator segment II and its front and rear insulating concrete mica plate
Electrical angle is 60 °, and mechanical angle is 60 °/P, and commutator is fixed on stator side according to position of magnetic pole, and whole windings share one.
Preferably, the brush rotates with the rotor of reversing arrangement.
Preferably, between the adjacent brush 360 °/m of mutual deviation mechanical angle.
Preferably, the reversing arrangement of the multiphase DC square-wave motor also includes afterflow buffer circuit, afterflow buffer circuit
Including buffering electric capacity and two afterflow bridge arms, each afterflow bridge arm is made up of three diodes, the positive source commutation
Piece connects DC power anode, and the power cathode commutator segment connects DC power cathode, and the afterflow commutator segment I and afterflow are changed
A midpoint for diode continuousing flow bridge arm is connected respectively to piece II.
Preferably, the quantity of the afterflow buffer circuit is one or more sets.
Preferably, the commutator includes commutator segment group number and should be equal to permanent magnet pole logarithm, and power supply positive and negative electrode commutates
Piece is respectively just to N, S pole of permanent magnet.
Preferably, the brush width need to be more than mica insulation sheet width between commutator segment.
In order to overcome the shortcomings of commutation arc and fire in existing direct current generator reversing arrangement, particularly power supply reversing arrangement
The problems such as flower, commutator segment and afterflow bridge arm redundancy, the utility model proposes a kind of electromechanical multiphase DC of the mixing without arc commutation
Square-wave motor, the motor reversing device will not produce electric arc, and commutation spark is obviously reduced, required commutator segment negligible amounts,
Commutator structure is simple, with low cost, and multiphase DC square-wave motor of the electromechanical mixing without arc commutation of the present utility model is not
Extra controller and converters is needed, system cost is saved；Electromechanical mixing of the present utility model is without arc commutation
Multiphase DC square-wave motor whole windings share a commutator, relative to the mains inverter of prior art, in the number of phases
Commutator segment and diode continuousing flow bridge arm are greatly reduced in the case of more, is easy to be generalized to polyphase machine, answered with extensive
Use prospect.
Brief description of the drawings
Fig. 1 is electromechanical electrical connection diagram of the mixing without arc reversing arrangement and armature winding of three-phase bipolar DC motor.
Fig. 2 is the vertical section structural map of three-phase bipolar DC motor embodiment.
Fig. 3 is the A--A sectional views of Fig. 2.
Fig. 4 is the expanded view along the circumferential direction of commutator 2 in Fig. 2.
Fig. 5 is electromechanical electrical connection diagram of the mixing without arc reversing arrangement and armature winding of three-phase and quadrupole direct current generator.
Three-phase current and afterflow buffering capacitance voltage schematic diagram when Fig. 6 three-phase DC motors motoring condition works.
Specific embodiment
For the purpose, technical scheme and advantage for implementing the utility model are clearer, below in conjunction with the utility model
Accompanying drawing in embodiment, is further described in more detail to the technical scheme in the utility model embodiment.In the accompanying drawings, ad initio
Same or similar element or element with same or like function are represented to same or similar label eventually.Described reality
It is a part of embodiment of the utility model to apply example, rather than whole embodiments.Below with reference to the embodiment of Description of Drawings
It is exemplary, it is intended to for explaining the utility model, and it is not intended that to limitation of the present utility model.It is new based on this practicality
Embodiment in type, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of the utility model protection.Embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
In the broad embodiment of the utility model one：The Machinery Ministry subpackage of the multiphase DC square-wave motor reversing arrangement
Include：Brush and commutator, are drawn per phase armature winding by brush, and commutator includes one or more commutator segment groups, wherein one
Individual commutator segment group is made up of positive source commutator segment, afterflow commutator segment I, power cathode commutator segment and afterflow commutator segment II, they
Each other by mica-sheet insulation, 360 ° of complete electrical angle cycles are circumferentially arranged into, shared mechanical angle is 360 °/P,
The electrical angle of each positive source commutator segment and power cathode commutator segment is 120 °, and mechanical angle is 120 °/P, and each afterflow is changed
It it is 60 ° to piece I, afterflow commutator segment II and its front and rear insulating concrete mica plate electrical angle, mechanical angle is 60 °/P, and commutator is according to magnetic
Pole position is fixed on stator side, and whole windings share one.
Based on m phases armature winding, brushless DC motor structures of the P to pole, air-gap field and electromotive force are trapezoidal wave,
Armature supply is square wave, but stator and rotor are inverted, stator be P to permanent magnet pole, rotor be Y-connected m phases armature around
Group.
Electromechanics mixing need to meet four big principles without arc reversing arrangement normal work：
First, the constant principle of electromagnetic torque：In order to ensure that electromagnetic torque is constant, commutator includes commutator segment group number and should wait
In permanent magnet pole logarithm, and power supply positive and negative electrode commutator segment is respectively just to N, S pole of permanent magnet.
Second, afterflow buffer circuit state uniqueness principle：In order to ensure the uniqueness of afterflow buffer circuit working condition,
Often covering afterflow buffer circuit any time can only at most be connected with a phase winding, in fact it could happen that the situation bag of connection polyphase windings
Include：Polyphase windings are directly connected to same afterflow commutator segment；The different groups afterflow that polyphase windings are connected by same afterflow bridge arm
Commutator segment is connected to the afterflow bridge arm；Polyphase windings are connected to the set by the different afterflow bridge arms of same set of afterflow buffer circuit
Afterflow buffer circuit.
To avoid phase winding from being directly connected to same afterflow commutator segment, adjacent two brushes room machine angle is needed to be changed more than afterflow
To piece mechanical angle, so as to compress afterflow commutator segment mechanical angle, or the number of phases can be reduced, so as to increase by increasing number of pole-pairs
Plus adjacent two brushes room machine angle is realized.For m phases, P to the direct current generator of pole, there are m brush, adjacent two brushes mutual deviation
360 °/m mechanical angles, commutator includes P commutator segment group, ignores insulating concrete mica plate width, each afterflow commutator segment mechanical angle
It is 60 °/P to spend, and should have 360 °/m>60 °/P, i.e. P>m/6.Critical condition for P=m/6, appropriate reduction afterflow commutator segment is wide
Degree, make itself and the distance between power supply commutator segment, i.e. mica insulation sheet width more than brush width half can come avoid with it is many
Phase winding is connected.
In order to avoid polyphase windings are connected to the afterflow bridge by the different group afterflow commutator segments that same afterflow bridge arm is connected
Arm, need to consider the number of phases and number of pole-pairs come whether corresponding afterflow commutator segment in determining each commutator segment group is connected to same afterflow
Bridge arm, so as to obtain required afterflow buffer circuit tricks.It is certain in the winding number of phases, in the case of only increasing number of pole-pairs, respectively change
Same afterflow bridge arm is may be connected to corresponding afterflow commutator segment in piece group, afterflow buffer circuit need not be now increased newly.Respectively change
To when corresponding afterflow commutator segment needs to connect different afterflow bridge arms in piece group, required afterflow buffer circuit is P sets at most.
Delay in order to avoid polyphase windings are connected to the set afterflow by the different afterflow bridge arms of same set of afterflow buffer circuit
Circuit is rushed, adjacent two brushes room machine angle can not be in the range of 120 °/P~240 °/P.For two brush room machine angles etc.
In the critical condition of 120 °/P and 240 °/P, equally can reduce afterflow width of commutator segment by appropriate, make it with power supply commutator segment
Distance, i.e. mica insulation sheet width avoids being connected with polyphase windings more than the half of brush width.
3rd, the not hanging principle of winding：In order to ensure that winding can connect to next changing before current commutator segment is completely disengaged from
There is vacant state without winding to piece, i.e. any time, brush width need to be more than mica insulation sheet width between commutator segment.
4th, capacitance selection principle：The generation of electric arc need to simultaneously meet dielectric breakdown field intensity condition (starting the arc electric-field intensity bar
Part) and arcing voltage condition.Due to buffering the effect of electric capacity, and the brush of afterflow commutator segment contact is separated with power supply commutator segment
Afterwards, voltage starts slow rising between the two, and in minimum spacing, electric-field intensity is still larger, and starting the arc electric-field intensity condition expires
Foot, but arcing voltage condition is unsatisfactory for, therefore electric arc will not be produced；With the increase of spacing, arcing voltage condition has reached,
But electric-field intensity condition no longer meets, electric arc will not be also produced.Desirable threshold electric-field intensity ET=5 × 105V/m, this electric-field intensity
Far below high voltage theory Plays atmosphere air disruptive field intensity 3 × 106V/m, it can be ensured that less than ETElectric-field intensity will not
Puncture brush and power supply commutator segment gap.
In order to suppress the starting the arc during afterflow, electric-field intensity should be less than threshold electric-field intensity between brush and power supply commutator segment,
A minimum not starting the arc rotating speed is given, threshold electric-field intensity is multiplied by linear velocity of the brush in the rotating speed and is not arcing voltage
Rate of change, electric capacity minimum value is calculated according to the voltage change ratio, it is ensured that produced without electric arc.During maximum speed, to ensure afterflow
Process terminates in 60 ° of freewheeling periods of electrical angle, and electric capacity needs discharge off within the time period, according to the Time Calculation electric capacity
Maximum.
Four big principles can determine the electromechanical mixing of any number of phases, any number of pole-pairs direct current generator without arc commutation according to more than
Apparatus structure.
Three-phase the two poles of the earth as shown in Figure 1 direct current generator embodiment, is made up of brush 1, commutator 2 and afterflow buffer circuit
Electromechanics mixing is realized commutating without arc reversing arrangement.Armature rotor is Y-connected three-phase symmetric winding A, B, C, is led to per phase winding
Cross the brush 1 rotated with rotor to draw, adjacent two brush 1 mutual deviation, 120 ° of mechanical angles.Commutator 2 only includes a commutator segment
Group, one is made up of positive source commutator segment 3, afterflow commutator segment I 4, power cathode commutator segment 5 and afterflow commutator segment II 6 completely
Circumference, is insulated by mica sheet 7 each other, is fixed on stator 11, and positive source commutator segment 3, negative commutation segment piece 5 are distinguished
Just to N, S pole of permanent magnet.In the case of the two poles of the earth, positive source commutator segment 3, the electrical angle of power cathode commutator segment 5 and machinery
Angle is 120 °, the electrical angle and mechanical angle of afterflow commutator segment I 4, afterflow commutator segment II 6 plus its front and rear insulating concrete mica plate 7
Degree is 60 °.The electronic section of reversing arrangement is made up of a set of afterflow buffer circuit, including a buffering electric capacity C and two it is continuous
Stream bridge arm, afterflow bridge arm I is by diode D1、D2And D5Composition, afterflow bridge arm II is by diode D3、D4And D6Composition.Positive source
The connection DC power anode of commutator segment 3 U+, power cathode commutator segment connection DC power cathode U-, afterflow commutator segment I, afterflow changes
Connect the midpoint of afterflow bridge arm I, II respectively to piece II.
In fig. 2, direct current generator of the electromechanical mixing without arc commutation it is main by brush 1, it is commutator 2, rotor 8, rotating shaft 9, solid
The disk 10 of stable electric brush, stator 11 and afterflow buffer circuit 12 are constituted.Wherein, commutator 2 is fixed on stator 7, and power supply is just
, respectively just to N, S pole of permanent magnet, afterflow buffer circuit 12 is also secured on stator 7, brush for pole commutator segment 3, negative commutation segment piece 5
1 is fixed on disk 10, and disk 10 is fixed on rotor 8 with rotating together with, so as to drive brush 1 to rotate, realizes the He of brush 1
The sliding contact of commutator 2.As shown in figure 3, the equidistantly distributed on disk 10 of brush 1, adjacent two brush 1 mutual deviation, 120 ° of machineries
Angle.Commutator 2 is fixed on the inner circumferential surface of stator 7, and four commutator segment groups are into a full circumferences.Fig. 4 is commutator 2 by circle
The schematic diagram that circumferential direction is launched.
For three-phase the two poles of the earth direct current generator, adjacent two brush 1 mutual deviation, 120 ° of mechanical angles, commutator only one of which commutator segment
Group, afterflow commutator segment I 4 and afterflow commutator segment II 6 are 60 ° plus the mechanical angle of its front and rear insulating concrete mica plate 7, and any time is every
One afterflow commutator segment at most can only be directly connected to a phase winding；Reversing arrangement only needs a set of afterflow buffer circuit, each afterflow
Bridge arm only connects an afterflow commutator segment, and the different group afterflow commutator segments that polyphase windings will not be connected by same afterflow bridge arm connect
It is connected to the afterflow bridge arm；For the critical condition that two brush room machine angles are equal to 120 °, afterflow commutator segment is suitably reduced wide
Degree, makes itself and the distance between power supply commutator segment, the i.e. width of mica insulation sheet 7 more than the half of the width of brush 1, and polyphase windings will not
Same set of afterflow buffer circuit is connected to by different afterflow bridge arms.So, the reversing arrangement meets the constant principle of electromagnetic torque
With afterflow buffer circuit state uniqueness principle.The width of mica insulation sheet 7 between the width of brush 1 is more than commutator segment simultaneously, so full
The not hanging principle of sufficient winding.
When direct current generator is normally run with motoring condition, armature winding by brush 1 successively with positive source commutator segment 3,
Afterflow commutator segment I 4, power cathode commutator segment 5 and the sliding contact of afterflow commutator segment II 6, and arrive again at positive source commutator segment 3
Start next circulation.The sliding contact of brush 1 and commutator 2 realizes the commutation of armature winding electric current, electricity in a cycle
Pivot winding is not turned on five states after the completion of having forward conduction, positive afterflow, reverse-conducting, reverse afterflow and afterflow.Such as Fig. 1
The position of center brush 1, current time electric capacity C voltage is direct current power source voltage, and C phase winding forward conductions, B phase windings start reversely to lead
Logical, A phase windings have just departed from power cathode commutator segment 5 and have started reverse afterflow, diode D6Conducting, electric capacity C starts positive electric discharge, its
After positive discharge off, diode D6Shut-off, A phase currents pass through diode D3Positive source is flowed directly into, until afterflow is finished,
Electric capacity C voltage always remains as zero；Until C phases start positive afterflow, diode D5Conducting, electric capacity C starts positive charge, reaches
After supply voltage, diode D5Shut-off, C phase currents directly pass through diode D by power cathode2There is provided, until afterflow is finished, electricity
Hold C voltage and always remain as direct current power source voltage.Each phase winding replaces forward and reverse afterflow, electric capacity C cycle charge-discharges.
When added direct current power source voltage is less than armature winding electromotive force, direct current generator is operated in on-position.As in Fig. 1
The position of brush 1, C phase winding reverse-conductings, B phase winding forward conductions, A phase windings have just departed from power cathode commutator segment 5 and have started just
To afterflow, DC power cathode passes through diode D4For A phase windings provide afterflow passage；When C it is opposite to afterflow when, dc source
Positive pole passes through diode D1For it provides afterflow passage.
The generation of electric arc need to simultaneously meet dielectric breakdown field intensity condition (starting the arc electric-field intensity condition) and arcing voltage condition.
Due to the effect of buffering electric capacity C, and the brush 1 that afterflow commutator segment is contacted, after being separated with power supply commutator segment, voltage is opened between the two
Begin slowly to rise, in minimum spacing, electric-field intensity is still larger, and starting the arc electric-field intensity condition meets, but arcing voltage bar
Part is unsatisfactory for, therefore will not produce electric arc；With the increase of spacing, arcing voltage condition has reached, but electric-field intensity condition
No longer meet, will not also produce electric arc.Desirable threshold electric-field intensity ET=5 × 105V/m, this electric-field intensity is managed far below high voltage
By Plays atmosphere air disruptive field intensity 3 × 106V/m, it can be ensured that less than ETElectric-field intensity will not puncture brush 1 and electricity
Source commutator segment gap.
In order to suppress the starting the arc during afterflow, electric-field intensity should be less than threshold electric-field intensity between brush 1 and power supply commutator segment
ET, give a minimum not starting the arc rotating speed nmin, threshold electric-field intensity ETLinear velocity of the brush in the rotating speed is multiplied by be not
Arcing voltage rate of change, electric capacity minimum value C is calculated according to the voltage change ratiomin, it is ensured that produced without electric arc, computing formula is such as
Under：
Wherein：iminArmature winding electric current during for minimum speed, r is commutator inner periphery radius.
Maximum speed nmaxWhen, to ensure that afterflow process terminates in 60 ° of freewheeling periods of electrical angle, electric capacity C is needed at this moment
Between discharge off, afterflow process duration Δ t in sectionmaxEstimation equation：
According to time Δ tmaxObtain calculating capacitance maximum CmaxComputing formula：
Wherein：umax、imaxArmature winding voltage, electric current during for maximum speed, L are armature winding inductance.According to formula (1) and
The capacitance that formula (3) is calculated meets capacitance selection principle.
Electromechanical electrical connection of the mixing without arc reversing arrangement and armature winding of three-phase and quadrupole direct current generator as shown in Figure 5
Figure.Adjacent two brush 1 mutual deviation, 120 ° of mechanical angles, commutator has two commutator segment groups, and power supply commutator segment mechanical angle is 60 °,
Afterflow commutator segment is 30 ° plus the mechanical angle after its front and rear insulating concrete mica plate 7, and any time each afterflow commutator segment is at most only
Can be directly connected to a phase winding；Reversing arrangement only needs a set of afterflow buffer circuit, and each afterflow bridge arm connects two groups of commutator segments
Corresponding two afterflow commutator segments in group, and polyphase windings will not be connected to the afterflow bridge arm by the two afterflow commutator segments；
For the critical condition that the room machine angle of two brush 1 is equal to 120 °, afterflow width of commutator segment is suitably reduced, it is changed with power supply
Half to the distance between piece, the i.e. width of mica insulation sheet 7 more than brush width, polyphase windings will not be by different afterflow bridge arms
It is connected to same set of afterflow buffer circuit.So, the reversing arrangement meets the constant principle of electromagnetic torque and afterflow buffer circuit shape
State uniqueness principle.The width of mica insulation sheet 7 between the width of brush 1 is more than commutator segment simultaneously, so meeting the not hanging principle of winding.
Capacitance is calculated according to formula (1) and formula (3) and then meets capacitance selection principle.
Three-phase current and capacitance voltage schematic diagram, circulate successively per phase when direct current generator motoring condition as shown in Figure 6 works
120 ° of electrical angles of forward conduction, positive afterflow and are not turned on 60 ° of electrical angles, 120 ° of electrical angles of reverse-conducting, reverse afterflow and not
60 ° of electrical angles of conducting, 120 ° of electrical angles of A, B, C three-phase mutual deviation.Electric capacity C is started to charge up from no-voltage when having winding forward direction afterflow,
Reach and keep after direct current power source voltage, electric discharge is started when having winding reverse afterflow, no-voltage is kept after discharge off, until
Positive afterflow next time is charged.
It is last it is to be noted that：Above example is only used to illustrate the technical solution of the utility model, rather than it is limited
System.Although being described in detail to the utility model with reference to the foregoing embodiments, one of ordinary skill in the art should manage
Solution：It can still be modified to the technical scheme described in foregoing embodiments, or which part technical characteristic is entered
Row equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from each embodiment of the utility model
The spirit and scope of technical scheme.
Claims (7)
1. a kind of multiphase DC square-wave motor that electromechanical mixing commutates without arc, it is characterised in that the multiphase DC square-wave motor
The mechanical part of reversing arrangement includes：Brush and commutator, are drawn per phase armature winding by brush, commutator comprising one or
Multiple commutator segment groups, one of commutator segment group is by positive source commutator segment, afterflow commutator segment I, power cathode commutator segment and continues
Stream commutator segment II is constituted, and they by mica-sheet insulation, are circumferentially arranged into 360 ° of complete electrical angle cycles, institute each other
Mechanical angle is accounted for for 360 °/P, the electrical angle of each positive source commutator segment and power cathode commutator segment is 120 °, mechanical angle
It is 120 °/P, each afterflow commutator segment I, afterflow commutator segment II and its front and rear insulating concrete mica plate electrical angle are 60 °, mechanical angle is
60 °/P, commutator is fixed on stator side according to position of magnetic pole, and whole windings share one.
2. the multiphase DC square-wave motor that electromechanical mixing as claimed in claim 1 commutates without arc, it is characterised in that：The brush
Rotated with the rotor of reversing arrangement.
3. the multiphase DC square-wave motor that electromechanical mixing as claimed in claim 2 commutates without arc, it is characterised in that：It is described adjacent
The mechanical angle of 360 °/m of mutual deviation between brush.
4. the multiphase DC square-wave motor that electromechanical mixing as claimed in claim 1 commutates without arc, it is characterised in that：The multiphase
The reversing arrangement of direct current square-wave motor also includes afterflow buffer circuit, and afterflow buffer circuit is continuous including a buffering electric capacity and two
Stream bridge arm, each afterflow bridge arm is made up of three diodes, and the positive source commutator segment connects DC power anode, the electricity
Source negative commutation segment piece connection DC power cathode, the afterflow commutator segment I and afterflow commutator segment II connect a diode respectively
The midpoint of afterflow bridge arm.
5. the multiphase DC square-wave motor that electromechanical mixing as claimed in claim 4 commutates without arc, it is characterised in that：The afterflow
The quantity of buffer circuit is one or more sets.
6. the multiphase DC square-wave motor that electromechanical mixing as claimed in claim 1 commutates without arc, it is characterised in that：The commutation
Device includes commutator segment group number and should be equal to permanent magnet pole logarithm, and power supply positive and negative electrode commutator segment respectively just to N, S of permanent magnet
Pole.
7. the multiphase DC square-wave motor that electromechanical mixing as claimed in claim 1 commutates without arc, it is characterised in that：The brush
Width need to be more than mica insulation sheet width between commutator segment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621269801.9U CN206294034U (en) | 2016-11-22 | 2016-11-22 | A kind of electromechanical multiphase DC square-wave motor of the mixing without arc commutation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621269801.9U CN206294034U (en) | 2016-11-22 | 2016-11-22 | A kind of electromechanical multiphase DC square-wave motor of the mixing without arc commutation |
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| CN206294034U true CN206294034U (en) | 2017-06-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685148A (en) * | 2016-11-22 | 2017-05-17 | 清华大学 | Electromechanical hybrid arcless-commutation multiphase direct-current square-wave motor |
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2016
- 2016-11-22 CN CN201621269801.9U patent/CN206294034U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685148A (en) * | 2016-11-22 | 2017-05-17 | 清华大学 | Electromechanical hybrid arcless-commutation multiphase direct-current square-wave motor |
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