CN110518769A - A kind of shunt DC machine - Google Patents
A kind of shunt DC machine Download PDFInfo
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- CN110518769A CN110518769A CN201810499349.2A CN201810499349A CN110518769A CN 110518769 A CN110518769 A CN 110518769A CN 201810499349 A CN201810499349 A CN 201810499349A CN 110518769 A CN110518769 A CN 110518769A
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- brush
- main pole
- shunt
- extremely
- excitation winding
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/04—Connections between commutator segments and windings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
- H02K23/06—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having shunt connection of excitation windings
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Abstract
The present invention provides a kind of high current shunt DC machines.High current shunt DC machine provided by the invention, is connected with external dc electricity source device, has specified input current corresponding with external dc electricity source device characterized by comprising casing；M is to brush；Stator, comprising m corresponding to brush with m to main pole and an excitation winding portion；And rotor, wherein, contain excitation winding unit in excitation winding portion, it include m magnet exciting coil in each main pole, by the insulated electric conductor item that is made of the strip conductor for being enclosed with insulating layer, coiling forms the magnet exciting coil respectively in main pole, an electrical connection in one end of insulated electric conductor item and a pair of of brush, all one end of each insulated electric conductor item extremely correspond to brush with the S in all brushes and are electrically connected to form the first external terminal, simultaneously, all other ends extremely correspond to brush with the N in all brushes and are electrically connected to form the second external terminal, m is the positive integer not less than 2.
Description
Technical field
The invention belongs to direct current generator field, in particular to a kind of shunt DC machine.
Background technique
The excitation winding of shunt DC machine is in parallel with armature winding and shares same power supply, it has good speed regulation
Can, the advantages that biggish detent torque and overload capacity are strong, be widely used in rolling mill, electric locomotive, main shaft of large machine tools and pass
In dynamic system and ship etc..
Direct current generator is usually to be used together to constitute DC motor drive with chopper, in order to guarantee that system is reliable
Property, the maximum output current of chopper is usually 2 to 3 times of rated current of motor.Chopper is to modulate skill using pulse width
The turn-on and turn-off of art control power switch tube change output voltage and export electric current, the size of output current ripple with
The switching frequency of power switch tube is inversely proportional, the size of the switching frequency of power switch tube and switching loss (or temperature rise, failure
Rate) it is directly proportional.And motor output torque ripple is square direct ratio with current ripples.Therefore, in order to reduce motor output torque
Ripple reduces current ripples, it is necessary to improve switching frequency；And in order to reduce switching loss, and switching frequency must be reduced.
This contradictory relation affects the development of high-power high-performance direct current motor speed control device.Cause its numerically-controlled machine tool etc. to turn
It is difficult to apply on the exigent device of square ripple.
Applied to the Shunt-excited DC Motors Based in national defence equipment, since stealthy demand is especially quick to vibration and electromagnetic interference
Sense, that is to say, that the ripple of ripple and electric current to motor output torque requires particularly severe.And currently, being applied to high-power state
The traditional shunt DC machine of anti-electrical equipment has been difficult to cope with the increasingly flourishing investigative technique of technology.
For these reasons, powerful Shunt-excited DC Motors Based development receives restriction and influence, affects economy and builds
And if national defense construction.
Summary of the invention
The present invention is to carry out in order to solve the above problem, provides a kind of shunt DC machine.
To achieve the goals above, present invention employs following technical proposals:
The present invention provides a kind of shunt DC machines, are connected with DC power supply, have specified input current, feature
It is, comprising: casing；M is fixed in casing brush, is arranged according to specified input current；Stator is arranged in casing
It is interior, comprising m corresponding to brush with m to main pole and an excitation winding；And rotor, it is arranged in stator, includes
The multiple armature winding connected using lap winding mode, wherein every a pair of main pole contains S polarity main pole and the main magnetic of N polarity
Pole, every a pair of brush contain that a S corresponding with S polarity main pole extremely corresponds to brush and one opposite with N polarity main pole
The N answered extremely corresponds to brush, and m excitation winding unit is contained in excitation winding portion, and the m excitation winding unit and m distinguish brush
Corresponding, each excitation winding unit is by the insulated electric conductor item that is made of the metal wire for being enclosed with insulating layer in m to main magnetic
Magnet exciting coil is respectively prepared on extremely and is formed, the insulated electric conductor item in each excitation winding unit have one end and the other end, m pairs
Main pole contain scheduled a pair of of main pole as a pair of predetermined main pole, one end of insulated electric conductor item makes a reservation for main magnetic from a pair
S polarity main pole or N polarity main pole in extremely are drawn, and are extremely corresponded to brush and N with the S of corresponding a pair of of brush and extremely corresponded to
An electrical connection in brush, all one end of each insulated electric conductor item correspond to identical polar in a pair of predetermined main pole
Main pole, and brush electrical connection is extremely corresponded to the S in all brushes；Or all one end of each insulated electric conductor item are corresponding
The main pole of identical polar in a pair of predetermined main pole, and brush electrical connection, insulation are extremely corresponded to the N in all brushes
One end of conductor bar, which with the S of a pair of of brush extremely correspond to brush and N and extremely corresponds to one in brush, to be electrically connected, each insulated electric conductor
All one end of item extremely correspond to brush with the S in all brushes and are electrically connected to form the first external terminal, meanwhile, it is all another
End extremely corresponds to brush with the N in all brushes and is electrically connected to form the second external terminal；Alternatively, the institute of each insulated electric conductor item
There is one end extremely to correspond to brush with the N in all brushes to be electrically connected to form the first external terminal, meanwhile, all other ends and institute
There is the S in brush extremely to correspond to brush to be electrically connected to form the second external terminal, outside m the first external terminals and m second
Portion's terminals are used to respectively correspond electrical connection with the two poles of the earth of external dc electricity source device, and m is the positive integer not less than 2.
The present invention provides a kind of shunt DC machines, are connected with external dc electricity source device, have and external dc
The corresponding specified input current of power supply device characterized by comprising casing；M is fixed in casing brush；Stator,
It is arranged in casing, comprising m corresponding to brush with m to main pole and an excitation winding portion；And rotor, setting exist
It include multiple armature winding, wherein m excitation winding unit is contained in excitation winding portion, the m excitation winding unit in stator
Corresponding to brush difference with m, excitation winding unit is connected by the total 2m magnet exciting coil being separately positioned in each main pole
It is connected into, includes m magnet exciting coil in each main pole, the magnet exciting coil is by being made of the strip conductor for being enclosed with insulating layer
Coiling forms insulated electric conductor item respectively in main pole, and the insulated electric conductor item in each excitation winding unit has along magnet exciting coil
Predetermined current direction and the one end distinguished and the other end, it is every a pair of main pole contain and magnet exciting coil coiling direction and excitation wire
The corresponding S polarity main pole in the predetermined current direction of circle and N polarity main pole, every a pair of brush contain one and S polarity master
The corresponding S of magnetic pole extremely corresponds to brush and a N corresponding with N polarity main pole extremely corresponds to brush, and the one of insulated electric conductor item
End, which with the S of a pair of of brush extremely corresponds to brush and N and extremely corresponds to one in brush, to be electrically connected, and all the one of each insulated electric conductor item
End extremely corresponds to brush with the S in all brushes and is electrically connected to form the first external terminal, meanwhile, all other ends and all electricity
N in brush extremely corresponds to brush and is electrically connected to form the second external terminal；Alternatively, all one end and the institute of each insulated electric conductor item
There is the N in brush extremely to correspond to brush to be electrically connected to form the first external terminal, meanwhile, in all other ends and all brushes
S extremely corresponds to brush and is electrically connected to form the second external terminal, and m the first external terminals and m the second external terminals are used
Electrical connection is respectively corresponded in the two poles of the earth with external dc electricity source device, m is the positive integer not less than 2.
Shunt DC machine provided by the invention can also have such technical characteristic, further includes: terminal box is fixed on
On casing, wherein m the first external terminals and m the second external terminals are arranged in terminal box.
Shunt DC machine provided by the invention can also have such technical characteristic: where connect outside one first
Line end and corresponding second external terminal constitute a wiring units.
Shunt DC machine provided by the invention can also have such technical characteristic: where m wiring units with extremely
Few corresponding electrical connection of an external dc electricity source device.
Shunt DC machine provided by the invention can also have such technical characteristic: where insulated electric conductor item is paint
Any one in envelope curve and insulated copper conducting bar.
Shunt DC machine provided by the invention can also have such technical characteristic: where the m in all main poles
The coiling direction of a magnet exciting coil and the number of turns are all identical.
Shunt DC machine provided by the invention can also have such technical characteristic: where in each excitation winding
In unit, the connection relationship of 2m magnet exciting coil be series, parallel and be series-parallel in any one, each excitation winding unit
In 2m magnet exciting coil connection relationship it is identical.
Shunt DC machine provided by the invention can also have such technical characteristic: where multiple armature winding
Bind mode is any one in single folded, overlapping and complex wave.
Shunt DC machine provided by the invention can also have such technical characteristic: where continuous-current plant is
One of chopper, battery and rectifier power source.
Shunt DC machine provided by the invention can also have such technical characteristic: where the logarithm m of brush according to
Rated current is arranged.
The action and effect of invention
The shunt DC machine provided according to the present invention, because the insulated electric conductor item in each excitation winding unit has edge
The S of the predetermined current direction of magnet exciting coil and the one end distinguished and the other end, one end of insulated electric conductor item and a pair of of brush is extremely right
Brush and N is answered extremely to correspond to an electrical connection in brush, all one end and the pole S in all brushes of each insulated electric conductor item
Corresponding brush is electrically connected to form the first external terminal, meanwhile, all other ends extremely correspond to brush electricity with the N in all brushes
Gas connects to form the second external terminal；Alternatively, all one end of each insulated electric conductor item are extremely corresponding electric with the N in all brushes
Brush electrical connection forms the first external terminal, meanwhile, all other ends extremely correspond to brush electrical connection with the S in all brushes
The second external terminal is formed, m the first external terminals and m the second external terminals are used to connect with external electrical,
That is each first external terminal and corresponding second external terminal are connected to one and excitation winding element and a pair
Brush, is connected to an armature winding branch between a pair of of brush, and adjacent two brushes of each pair of brush and left and right are separately connected
One armature winding branch, so, each first external terminal and corresponding second external terminal can be outer by one
Portion's continuous-current plant is independently-powered, as long as each external dc electricity source device undertakes excitation winding unit and 2 most
The operating current of armature winding branch, only m/mono- of current of electric.With the increase of current of electric, as long as m is sufficiently large,
Independently-powered by m external dc electricity source device, the output electric current of each external dc electricity source device can be small to not needing
Using power module or Current Sharing Technology, to reduce cost.
Moreover, when the brush, excitation winding unit, connecting line in external dc electricity source device and motor break down, only
It needs guilty culprit partly shielding effect, other normal segments can still work, and improve the reliability and safety of system
Property.
Each external dc electricity source device can use different control, so that the waveform of each output electric current is inconsistent,
The ripple and ripple factor of output the sum of electric current of all external dc electricity source devices are reduced, that is, motor energization current and
The ripple and ripple factor of armature supply all reduce, to reduce the ripple and ripple factor of the output torque of motor, in turn
The ripple and ripple factor for reducing motor output speeds, reduce electromagnetic interference, vibration and the noise of motor.
Relative to only there are two traditional shunt DC machine of terminals, the present invention has more terminals, Mei Gejie
The electric current of line end only has m/mono- of current of electric, and connecting line and connector between motor and external dc electricity source device are right
The requirement of contact resistance and insulation is lower, reduces production cost, helps to improve the reliability and safety of system.
In addition, the present invention can break the external monopolization for power module, controller and high-performance electric driving device and
Shunt DC machine is not only applied to electric car, electrocar, railcar, sightseeing bus, lorry, ship by block
Etc. big load electrical equipment, but also the performance of electrical equipment can be improved, is applied to the height such as numerically-controlled machine tool and submarine performance electricity
Dynamic equipment, realizes the production domesticization of high-performance Vidacare corp.
In short, the present invention have reasonable in design, simple, reliability and it is highly-safe, can be applied to it is high-power and high
The shunt DC machine driving device and electrical equipment of performance.
Detailed description of the invention
Fig. 1 is the longitudinal profile structure schematic of the shunt DC machine in the embodiment of the present invention；
Fig. 2 is the horizontal cross-section structure diagram of the shunt DC machine in the embodiment of the present invention；
Fig. 3 is the armature winding of shunt DC machine of the invention and the circuit connection diagram of excitation winding；
Fig. 4 is that the armature winding of the shunt DC machine in the embodiment of the present invention and the circuit connection of excitation winding are illustrated
Figure；
Fig. 5, which is that the armature winding list of the shunt DC machine in the embodiment of the present invention is folded, is coupled expanded schematic diagram；
Fig. 6 is the circuit connection diagram of traditional shunt DC machine；
Fig. 7 is input current waveform figure of the shunt DC machine three in the embodiment of the present invention to brush；
Fig. 8 is the input current waveform figure of three excitation winding units of shunt DC machine in the embodiment of the present invention；
Fig. 9 is the electric current of the shunt DC machine in the embodiment of the present invention and the armature supply of traditional shunt DC machine
Compare figure；
Figure 10 is the electric current of the shunt DC machine in the embodiment of the present invention and the excitation electricity of traditional shunt DC machine
Stream compares figure；And
Figure 11 is the torque of the shunt DC machine in the embodiment of the present invention and the torque ratio of traditional shunt DC machine
Compared with figure.
Specific embodiment
Illustrate a specific embodiment of the invention below in conjunction with attached drawing.
Fig. 1 is the longitudinal profile structure schematic of the shunt DC machine in the embodiment of the present invention；Fig. 2 is that the present invention is implemented
The horizontal cross-section structure diagram of shunt DC machine in example；Fig. 3 be shunt DC machine of the invention armature winding with
The circuit connection diagram of excitation winding；Fig. 4 be the embodiment of the present invention in shunt DC machine armature winding and excitation around
The circuit connection diagram of group；Fig. 5 is that the folded connection expansion of armature winding list of the shunt DC machine in the embodiment of the present invention is shown
It is intended to.
In the present embodiment, shunt DC machine 100 is connected with external dc electricity source device (not shown), have with it is outer
The corresponding specified input current of portion's continuous-current plant.
As depicted in figs. 1 and 2, shunt DC machine 100 includes casing 11, stator 12, brush 13, rotor 14 and wiring
Box (is not shown).As shown in figure 3, setting m for the logarithm of brush according to the value of specified input current.Such as Fig. 4 and Fig. 5
Shown, m is set as 3 in the present embodiment.When the maximum output current that the contact of power switch tube is born is I1, multi-phase AC motor
Maximum line current be Imax, the logarithm m of brush meets following conditions: m > Imax÷I1。
Stator 12 is arranged in casing 11, includes 3 pairs of totally 6 main poles 121 and excitation winding portions 122；Each
It include 3 magnet exciting coils in main pole 121, each magnet exciting coil passes through the insulated electric conductor that is made of the conductor for being enclosed with insulating layer
Coiling forms respectively in main pole 121, and insulated electric conductor item is any one in enameled wire and insulated copper conducting bar, the present embodiment
In, insulated electric conductor item is enameled wire.In the present embodiment, the coiling direction of 3 magnet exciting coils in each main pole 121 and the number of turns
It is identical.
As shown in Fig. 2, extracted respectively in each main pole 121 magnet exciting coil totally 6 magnet exciting coils connect into as
An excitation winding unit 1221 shown in Fig. 4, excitation winding portion 122 contain 3 excitation winding units 1221, each excitation around
Insulated electric conductor item in group unit 1221 has according to the predetermined current direction of magnet exciting coil and the one end distinguished and the other end, often
A pair of of main pole contains S polarity main pole corresponding with the predetermined current direction in magnet exciting coil coiling direction and magnet exciting coil
1211 and N polarity main pole 1212.In the present embodiment, the coiling direction of 3 magnet exciting coils in each main pole 121 and the number of turns
It is all identical.
In each excitation winding unit 1221, during the connection relationship of 6 magnet exciting coils is series, parallel and is series-parallel
Any one, and the connection relationship of 6 magnet exciting coils in each excitation winding unit 1221 is identical, in the present embodiment, 6
The connection relationship of magnet exciting coil is series connection.
As depicted in figs. 1 and 2,3 pairs totally 6 brushes 13 be arranged in casing 11, every a pair of brush 13 contains one and the pole S
The corresponding S of property main pole 1211 extremely corresponds to brush 131 and one extremely corresponds to brush with the corresponding N of N polarity main pole 1212
132.Brush 13 is any one in narrow brush or wide brush, and the present embodiment center brush 13 is narrow brush.
As shown in Fig. 2, rotor 14 is arranged in stator, as shown in figure 5, comprising multiple armature winding 141, multiple armatures around
The bind mode of group 141 is any one in single folded, overlapping and complex wave.In the present embodiment, the connection side of multiple armature winding
Formula is single folded.
Terminal box (not shown) is fixed on casing 11, as shown in figure 4,3 the first external terminals 1511 and 3
Two external terminals 1512 are arranged in terminal box, first external terminal 1511 and it is one second corresponding outside
Terminals 1512 constitute a wiring units 151 (152 or 153).3 wiring units 151,152 and 153 and at least one outside
The corresponding electrical connection of continuous-current plant, continuous-current plant are one of chopper, battery and rectifier power source.The present embodiment
In, 3 wiring units 151 and 3 chopper supply device (not shown) correspond electrical connection, the switch of 3 choppers
Frequency is all 1 kHz.
All one end of each excitation winding unit 1221 extremely correspond to brush 131 with the S in all brushes 13 and are electrically connected
The first external terminal is formed, all other ends of each excitation winding unit 1221 are extremely corresponding electric with the N in all brushes 13
132 electrical connection of brush forms the second external terminal；Alternatively, all one end of each excitation winding unit 1221 and all brushes
N in 13 extremely correspond to brush 132 electrical connection formed the first external terminal, each excitation winding unit 1221 it is all another
End extremely corresponds to the corresponding brush of brush 131 with the S in all brushes 13 and is electrically connected to form the second external terminal.Outside 3 first
Portion's terminals and 3 the second external terminals with external electrical for connecting.
As shown in figure 4, in the present embodiment, 3 one end of 3 excitation winding units 1221 respectively with 3 in 6 brushes
N extremely corresponds to the corresponding electrical connection of brush 132 and forms 3 the first external terminals 1511 for one with external dc electricity source device
Pole (the present embodiment be anode) electrical connection, 3 other ends of 3 excitation winding units 1221 respectively with 3 in 6 brushes
S extremely corresponds to the corresponding electrical connection of brush 131 and forms 3 the second external terminals 1512 for one with external dc electricity source device
Pole (the present embodiment is cathode) electrical connection.
Fig. 6 is the circuit connection diagram of traditional shunt DC machine；Fig. 7 is the shunt DC in the embodiment of the present invention
The input current waveform figure of three wiring units of motor；Fig. 8 is the electric current and biography of the shunt DC machine in the embodiment of the present invention
The electric current of the shunt DC machine of system compares figure；Fig. 9 is the torque of shunt DC machine in the embodiment of the present invention and traditional
Figure is compared in the torque of shunt DC machine；Electric current and traditional shunt excitation of the Figure 10 for the shunt DC machine in the embodiment of the present invention
The exciting current of direct current generator compares figure；And Figure 11 is the torque of shunt DC machine in the embodiment of the present invention and traditional
Figure is compared in the torque of shunt DC machine.
Be illustrated in figure 6 the circuit connection diagram of traditional shunt DC machine, shunt DC machine only one connect
Line unit, wiring units electrical connection corresponding with 1 chopper supply device (not shown), the switching frequency of chopper are
1 kHz.
At steady state, current ripples are the difference of maximum value and minimum value, ripple factor be maximum value and minimum value it
The percentage of difference and average value.
As shown in fig. 7, the electric current line of shunt DC machine three in the embodiment of the present invention to brush A1B1, A2B2 and A3B3
Wave is equal to 99.31-87.33=11.99 amperes, and average value is equal to 93.32 amperes, and ripple factor is equal to 11.99/
93.32 × 100%=12.84%.
As shown in figure 8, three excitation winding units of shunt DC machine 1221,1222 and 1223 in the embodiment of the present invention
Current ripples be equal to 61.97-61.37=0.60 amperes, average value is equal to 61.67 amperes, and ripple factor is equal to
0.60/61.67 × 100%=0.97%.
As shown in figure 9, at steady state, the armature supply of the shunt DC machine in the embodiment of the present invention is equal to three pairs
The sum of the electric current of brush A1B1, A2B2 and A3B3, the ripple of armature supply are 281.95-277.98=3.97 amperes, average value
Equal to 279.97 amperes, ripple factor is equal to 3.97/279.97 × 100%=1.42%.The armature supply line of conventional motors
Wave is equal to 297.94-261.98=35.96 amperes, and average value is equal to 279.97 amperes, and ripple factor is equal to 35.96/279.97
× 100%=12.84%.Although the armature supply average value phase of shunt DC machine and conventional motors in the embodiment of the present invention
Together, the armature supply ripple and ripple factor of the shunt DC machine but in the embodiment of the present invention all only have the nine of conventional motors
/ mono-.
As shown in Figure 10, at steady state, the exciting current of the shunt DC machine in the embodiment of the present invention is equal to three
The sum of the electric current of a excitation winding unit 1221,1222 and 1223, the ripple of exciting current are 185.10-184.90=0.2 peace
Training, average value are equal to 185.0 amperes, and ripple factor is equal to 0.2/185 × 100%=0.11%.The armature electricity of conventional motors
Flow liner wave be equal to 185.9-184.1=1.8 ampere, average value be equal to 185.0 amperes, ripple factor equal to 1.8/185.0 ×
100%=0.97%.Although the shunt DC machine in the embodiment of the present invention is identical with the exciting current average value of conventional motors,
But the exciting current ripple and ripple factor of the shunt DC machine in the embodiment of the present invention all only have nine points of conventional motors
One of.
It is known that the electromagnetic torque and the equation of motion of shunt DC machine are as follows
Wherein, TemFor electromagnetic torque；CTFor torque constant；Φ is the magnetic flux of main field；LafFor excitation winding portion and armature
The mutual inductance of winding is constant；IfFor excitation winding portion electric current；IaFor armature winding electric current；TloadFor load torque；J is load
Rotary inertia is constant；Ω is output angular velocity；In formula (1), electromagnetic torque TemWith armature supply IaWith the magnetic flux of main field
Φ product is directly proportional, and the main field of direct current generator is motivated by the excitation winding portion of chopper, according to formula (1) it is found that
Electromagnetic torque TemWith armature supply IaWith excitation winding portion electric current IfProduct it is directly proportional, excitation winding portion electric current IfRipple system
Several and armature winding electric current IaRipple factor will lead to electromagnetic torque TemGenerate bigger ripple factor, output angular velocity Ω
Pulsation or ripple are bigger, and the performance of driving device and electrical equipment is worse.
In the present embodiment, LafIt is taken as 1, at steady state, as shown in figure 9, the shunt DC in the embodiment of the present invention
Motor torque ripple be equal to 52188.25-51398.38=789.87N.m, average value be equal to 51793.56N.m, ripple system
Number is equal to 1.53%.The torque ripple of traditional shunt DC machine is equal to 55386.15-48229.93=7156.21N.m,
Average value is equal to 51798.89N.m, and ripple factor is equal to 13.82%.That is, the shunt DC machine in the present embodiment is most
The average of torque of pipe and conventional motors is essentially identical, but the ripple and ripple of the shunt DC machine torque in the present embodiment
Coefficient all only has 1/9th of conventional motors, reduces the ripple and ripple factor of the output torque of motor, and then reduce motor
The ripple and ripple factor of revolving speed are exported, it is final to realize electromagnetic interference, vibration and the noise for reducing motor, improve shunt DC
The purpose of the performance of motor and electrical equipment.
The action and effect of embodiment
According to shunt DC machine provided in this embodiment, because the insulated electric conductor item in each excitation winding unit has
The one end distinguished and the other end along the predetermined current direction of magnet exciting coil, the pole S of one end of insulated electric conductor item and a pair of of brush
Corresponding brush and N extremely correspond to an electrical connection in brush, all one end of each insulated electric conductor item and the S in all brushes
Brush is extremely corresponded to be electrically connected to form the first external terminal, meanwhile, all other ends extremely correspond to brush with the N in all brushes
Electrical connection forms the second external terminal；Alternatively, all one end of each insulated electric conductor item and the N in all brushes are extremely corresponding
Brush is electrically connected to form the first external terminal, meanwhile, all other ends extremely correspond to brush with the S in all brushes and electrically connect
It connecing to form the second external terminal, m the first external terminals and m the second external terminals are used to connect with external electrical,
That is, each first external terminal and corresponding second external terminal are connected to one and excitation winding element and one
To brush, it is connected to an armature winding branch between a pair of of brush, adjacent two brushes of each pair of brush and left and right connect respectively
An armature winding branch has been connect, so, each first external terminal and corresponding second external terminal can be by one
External dc electricity source device is independently-powered, as long as each external dc electricity source device undertakes an excitation winding unit and most 2
The operating current of armature winding branch, only m/mono- of current of electric.With the increase of current of electric, as long as m is enough
Greatly, independently-powered by m external dc electricity source device, the output electric current of each external dc electricity source device can be small to being not required to
Power module or Current Sharing Technology are used, to reduce cost.
Moreover, the armature winding, brush, excitation winding unit, connecting line in external dc electricity source device and motor occur
When failure, it is only necessary to faulty component is shielded, other normal segments can still work, improve system reliability and
Safety.
Each external dc electricity source device can use different control, so that the waveform of each output electric current is inconsistent,
The ripple and ripple factor of output the sum of electric current of all external dc electricity source devices are reduced, that is, motor energization current and
The ripple and ripple factor of armature supply all reduce, to reduce the ripple and ripple factor of the output torque of motor, in turn
The ripple and ripple factor for reducing motor output speeds, reduce electromagnetic interference, vibration and the noise of motor.
Relative to only there are two traditional shunt DC machine of terminals, the present embodiment has more terminals, each
The electric current of terminals only has the one third of current of electric, connecting line and connection between motor and external dc electricity source device
Part, the requirement to contact resistance and insulation is lower, reduces production cost, helps to improve the reliability and safety of system.
In addition, the present invention can break the external monopolization for power module, controller and high-performance electric driving device and
Block, so that the invention can be applied not only to electric car, electrocar, railcar, sightseeing bus, lorry, ship
Etc. big load electrical equipment, but also the performance of electrical equipment can be improved, is applied to the height such as numerically-controlled machine tool and submarine performance electricity
Dynamic equipment, realizes the production domesticization of high-performance Vidacare corp.
In short, the present embodiment have reasonable in design, simple, reliability and it is highly-safe, can be applied to it is high-power and
High-performance Vidacare corp and electrical equipment.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of shunt DC machine, is connected with DC power supply, there is specified input current characterized by comprising
Casing；
M is fixed in the casing brush, is arranged according to the specified input current；
Stator is arranged in the casing, comprising m corresponding to the brush with m to main pole and an excitation winding；
And
Rotor is arranged in the stator, comprising the multiple armature winding connected using lap winding mode,
Wherein, every a pair main pole contains S polarity main pole and N polarity main pole,
Every a pair brush contains a S corresponding with S polarity main pole and extremely corresponds to brush and one and N polarity main pole
Corresponding N extremely corresponds to brush,
M excitation winding unit is contained in the excitation winding portion, and the m excitation winding unit and the m are opposite respectively to brush
It answers,
Each described excitation winding unit is by the insulated electric conductor item that is made of the metal wire for being enclosed with insulating layer at described m pairs
Magnet exciting coil is respectively prepared in main pole and is formed,
The insulated electric conductor item in each excitation winding unit has one end and the other end,
The m contains scheduled the pair of main pole to the main pole and is used as a pair of predetermined main pole,
Described one end of the insulated electric conductor item is from the S polarity main pole or the main magnetic of N polarity in the pair of predetermined main pole
Pole is drawn, and extremely corresponds to brush with the S of corresponding a pair brush and the N extremely corresponds to one in brush and electrically connects
It connects,
All described one end of each insulated electric conductor item correspond to the pair of predetermined main pole in identical polar it is described
Main pole, and brush electrical connection is extremely corresponded to the S in all brushes；Or each insulated electric conductor item
All described one end correspond to the pair of predetermined main pole in identical polar the main pole, and with all brushes
In the N extremely correspond to brush electrical connection,
Described one end of the insulated electric conductor item extremely corresponds to brush with the S of a pair of brush and the N extremely corresponds to brush
In one electrical connection,
All described one end of each insulated electric conductor item extremely correspond to brush electrical connection with the S in all brushes
The first external terminal is formed, meanwhile, all other ends extremely correspond to brush with the N in all brushes and electrically connect
It connects to form the second external terminal；Alternatively, in all described one end of each insulated electric conductor item and all brushes
The N extremely corresponds to brush and is electrically connected to form the first external terminal, meanwhile, in all other ends and all brushes
The S extremely correspond to brush and be electrically connected to form the second external terminal,
M first external terminals and m second external terminals are used for and the external dc electricity source device
The two poles of the earth respectively correspond electrical connection,
The m is the positive integer not less than 2.
2. a kind of shunt DC machine is connected with external dc electricity source device, have and the external dc electricity source device phase
Corresponding specified input current characterized by comprising
Casing；
M is fixed in the casing brush；
Stator is arranged in the casing, comprising m corresponding to the brush with m to main pole and an excitation winding
Portion, and
Rotor is arranged in the stator, includes multiple armature winding,
Wherein, m excitation winding unit is contained in the excitation winding portion, and the m excitation winding unit and the m distinguish brush
It is corresponding,
The excitation winding unit is connected by the total 2m magnet exciting coil being separately positioned in each described main pole,
Comprising the m magnet exciting coils in each main pole, which is led by the bar shaped by being enclosed with insulating layer
Coiling forms the insulated electric conductor item that body is constituted respectively in the main pole,
The insulated electric conductor item in each excitation winding unit have along the predetermined current direction of the magnet exciting coil and
One end of differentiation and the other end,
Every a pair main pole contains the predetermined current direction phase with magnet exciting coil coiling direction and the magnet exciting coil
Corresponding S polarity main pole and N polarity main pole, every a pair brush contain the pole S corresponding with S polarity main pole
Corresponding brush and a N corresponding with N polarity main pole extremely correspond to brush,
Described one end of the insulated electric conductor item extremely corresponds to brush with the S of a pair of brush and the N extremely corresponds to brush
In one electrical connection,
All described one end of each insulated electric conductor item extremely correspond to brush electrical connection with the S in all brushes
The first external terminal is formed, meanwhile, all other ends extremely correspond to brush with the N in all brushes and electrically connect
It connects to form the second external terminal；Alternatively, in all described one end of each insulated electric conductor item and all brushes
The N extremely corresponds to brush and is electrically connected to form the first external terminal, meanwhile, in all other ends and all brushes
The S extremely correspond to brush and be electrically connected to form the second external terminal,
M first external terminals and m second external terminals are used for and the external dc electricity source device
The two poles of the earth respectively correspond electrical connection,
The m is the positive integer not less than 2.
3. shunt DC machine according to claim 1 or 2, which is characterized in that further include:
Terminal box is fixed on the housing,
Wherein, m first external terminals and m second external terminals are arranged in the terminal box.
4. shunt DC machine according to claim 3, it is characterised in that:
Wherein, first external terminal and corresponding second external terminal constitute a wiring list
Member.
5. shunt DC machine according to claim 4, it is characterised in that:
Wherein, m wiring units electrical connection corresponding with external dc electricity source device described at least one.
6. shunt DC machine according to claim 2, it is characterised in that:
Wherein, the insulated electric conductor item is any one in enameled wire and insulated copper conducting bar.
7. shunt DC machine according to claim 2, it is characterised in that:
Wherein, the coiling direction of a magnet exciting coil of the m in all main poles and the number of turns are all identical.
8. shunt DC machine according to claim 2, it is characterised in that:
Wherein, in each excitation winding unit, the connection relationship of the 2m magnet exciting coils is series, parallel or goes here and there simultaneously
Any one in connection,
The connection relationship of the 2m magnet exciting coils in each excitation winding unit is identical.
9. shunt DC machine according to claim 2, it is characterised in that:
Wherein, the bind mode of multiple armature winding is any one in single folded, overlapping and complex wave.
10. shunt DC machine according to claim 2, it is characterised in that:
Wherein, the continuous-current plant is one of chopper, battery and rectifier power source.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810499349.2A CN110518769B (en) | 2018-05-22 | 2018-05-22 | Shunt-excited direct-current motor |
| US17/052,534 US11211855B2 (en) | 2018-05-22 | 2018-11-08 | Direct current motor |
| PCT/CN2018/114621 WO2019223253A1 (en) | 2018-05-22 | 2018-11-08 | Direct current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810499349.2A CN110518769B (en) | 2018-05-22 | 2018-05-22 | Shunt-excited direct-current motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110518769A true CN110518769A (en) | 2019-11-29 |
| CN110518769B CN110518769B (en) | 2021-02-26 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810499349.2A Active CN110518769B (en) | 2018-05-22 | 2018-05-22 | Shunt-excited direct-current motor |
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| CN (1) | CN110518769B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11211855B2 (en) | 2018-05-22 | 2021-12-28 | University Of Shanghai For Science And Technology | Direct current motor |
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|---|---|---|---|---|
| US7239063B2 (en) * | 2003-01-23 | 2007-07-03 | Asmo Co., Ltd. | Motor having supply brushes |
| JP2010098930A (en) * | 2008-09-22 | 2010-04-30 | Asmo Co Ltd | Brushed hybrid excitation motor and method of driving the same |
| CN203933177U (en) * | 2014-06-24 | 2014-11-05 | 溧阳市宏达电机有限公司 | A kind of direct-current series-excited variable-blade motor |
| CN106602947A (en) * | 2016-12-28 | 2017-04-26 | 上海理工大学 | Electric driving unit, chopper circuit, DC motor and electric equipment |
| CN107086831A (en) * | 2017-05-03 | 2017-08-22 | 上海理工大学 | Direct current drive drive device and electrical equipment |
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2018
- 2018-05-22 CN CN201810499349.2A patent/CN110518769B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7239063B2 (en) * | 2003-01-23 | 2007-07-03 | Asmo Co., Ltd. | Motor having supply brushes |
| JP2010098930A (en) * | 2008-09-22 | 2010-04-30 | Asmo Co Ltd | Brushed hybrid excitation motor and method of driving the same |
| CN203933177U (en) * | 2014-06-24 | 2014-11-05 | 溧阳市宏达电机有限公司 | A kind of direct-current series-excited variable-blade motor |
| CN106602947A (en) * | 2016-12-28 | 2017-04-26 | 上海理工大学 | Electric driving unit, chopper circuit, DC motor and electric equipment |
| CN107086831A (en) * | 2017-05-03 | 2017-08-22 | 上海理工大学 | Direct current drive drive device and electrical equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11211855B2 (en) | 2018-05-22 | 2021-12-28 | University Of Shanghai For Science And Technology | Direct current motor |
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| CN110518769B (en) | 2021-02-26 |
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