CN103762821B - electromagnetic brake linear motor system and control method thereof - Google Patents
electromagnetic brake linear motor system and control method thereof Download PDFInfo
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- CN103762821B CN103762821B CN201410050234.7A CN201410050234A CN103762821B CN 103762821 B CN103762821 B CN 103762821B CN 201410050234 A CN201410050234 A CN 201410050234A CN 103762821 B CN103762821 B CN 103762821B
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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
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
- H02P3/20—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by reversal of phase sequence of connections to the motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/06—Linear motors
- H02P25/064—Linear motors of the synchronous type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/06—Linear motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/06—Linear motors
- H02P25/062—Linear motors of the induction type
-
- 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
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Linear Motors (AREA)
- Control Of Linear Motors (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
Abstract
The invention relates to an electromagnetic brake linear motor system and a control method of the electromagnetic brake linear motor system, and belongs to the field of motors. A primary iron core of a linear motor in the system is in the shape of a flat plate, the output end of a primary winding is connected with a multi-phase energy absorbing resistor set in parallel, or two multi-phase winding sets are adopted for the primary winding, one multi-phase winding set is connected with the multi-phase energy absorbing resistor set in parallel, and the other multi-phase winding set is connected with an inverter. The control method includes the steps that when the relative speed between a motor and a stator of the linear motor is intermediate speed or high speed, frequency and phase of output current of the inverter are controlled so as to ensure that the linear motor works in a power generation braking mode; when the relative speed between the motor and the stator of the linear motor is low speed, frequency and phase of output current of the inverter are controlled so as to ensure that the linear motor works in a reverse braking mode. The electromagnetic brake linear motor system and the control method of the electromagnetic brake linear motor system are suitable for train braking systems in the rail transit field, motive power machine testing and brake systems of liner driving devices like lifting devices and recreation facilities.
Description
Technical field
The present invention relates to a kind of electromagnetic brake linear motor system and its control method, belong to machine field.
Background technology
Train high speed is related to driving and two key issues of braking of train.The braking of wherein bullet train should be given especially
With enough attention, the basic ideas of high-speed train braking as the train braking under current conventional speeds, that is, consume train
The kinetic energy of motion, makes train deceleration or stop.Because the kinetic energy of bullet train is more much larger than ordinary train, and between the lower wheel track of high speed
Adhesion coefficient and brake shoe and driving wheel between coefficient of friction all substantially reduce, therefore bullet train must be using new brake body
System.According to existing analyses, the braking of bullet train using based on regenerative braking, eddy-current brake, frictional damping be supplementary
Associated braking system, is a kind of economic benefit and the preferable brakes of technical performance.Eddy-current brake have rotating vortex braking with
Two kinds of forms of High-Speed Eddy Braking.Wherein High-Speed Eddy Braking belongs to non-adhesion braking, its advantage be when train speed 80～
In the range of 300km/h, braking characteristic is flat, and brake force is big.Above two eddy-current brake form all has one group of electric magnet and has
The electromagnetic induction body rail of relative motion, by electromagnetic induction, makes the kinetic energy of train be converted into the vortex in rail, and with
The form of heat dissipates to surrounding, reaches the purpose of braking with this.
High-Speed Eddy Braking device, is installing electric magnet between the wheel of bogie both sides, every group of electric magnet length is about
1200～2000mm；Electromagnetic induction body made by rail, and n, s pole of exciting electromagnet ferrum is alternately arranged along the bearing of trend of rail.Electricity
The number of magnetic poles of Magnet selects typically in the range of 4～20.The magnetic pole pole-face of exciting electromagnet ferrum is not little with the vertical dimension of rail surface
In 6mm.
But, there are the following problems for current track eddy-current brake technology: during train braking, the vortex on rail produces a large amount of
Heat, so that the temperature of rail is increased, the therefore parameter such as its electrical conductivity and pcrmeability all will change.Eddy-current brake power and rail
Resistivity relevant with magnetic reluctance, therefore rail temperature rise certainly will impact to eddy-current brake power.Meanwhile, temperature rise also makes rail
Mechanical property changes, and makes rail deliquescing, can reduce the life-span of rail.In addition, High-Speed Eddy Braking needs additional excitation electricity
Source, needs during braking to consume electric energy, the danger of brake fade when there is power-off and electric energy deficiency, and during low speed, brake force is little, fits
Use train speed narrow range.
Content of the invention
Make steel in order to solve the big calorimetric of vortex generation present in the train braking system in existing field of track traffic
The problem that rail temperature rises, the present invention proposes a kind of electromagnetic brake linear motor system and its control method.
Electromagnetic brake linear motor system of the present invention has two kinds of structures:
The first structure of electromagnetic brake linear motor system, it includes linear electric motors and inverter, and described system is also wrapped
Include multiphase magnetizing capacitance device group and multiple inductance, described linear electric motors are plate shaped line inductance electromotor, this line inductance electromotor
Including primary and secondary, described primary include primary unshakable in one's determination and armature winding, described primary unshakable in one's determination towards air gap side along perpendicular to
Primary and secondary direction of relative movement has groove, and this groove has been embedded in armature winding, and described armature winding is that how symmetrical annular is
Winding, the outfan of this annular multiphase symmetric winding is connected with inverter, and the outfan of this annular multiphase symmetric winding is also in parallel
There is a set of multiphase magnetizing capacitance device group；One is all connected between the outfan of every phase winding in this multiphase symmetric winding and inverter
Individual inductance.
Above-mentioned electromagnetic brake linear motor system can also include multiple inductance, every phase winding and inverter in armature winding
Between connect an inductance.
The second structure of electromagnetic brake linear motor system, it includes linear electric motors and inverter, and described system is also wrapped
Include multiphase magnetizing capacitance device group, described linear electric motors are plate shaped line inductance electromotor, this line inductance electromotor include primary and
Secondary, described primary inclusion primary iron core and armature winding, described armature winding is made up of two collar-shaped multiphase symmetric windings,
Described primary unshakable in one's determination towards air gap side along having groove perpendicular to primary and secondary direction of relative movement, this groove be embedded in primary around
Group, the collar-shaped multiphase symmetric winding in described armature winding is connected with multiphase magnetizing capacitance device group, another collar-shaped multiphase
Symmetric winding is connected with inverter.
Above-mentioned multiphase magnetizing capacitance device group is star-like connection or ring-like connection.
The electromagnetic brake linear motor system of above two structure all can also include multiphase energy absorption resistor group, institute
State multiphase energy absorption resistor group to be connected in parallel with multiphase magnetizing capacitance device group.
Multiphase energy absorption resistor group in above-mentioned electromagnetic brake linear motor system is star-like connection or ring
Type connects.
Armature winding in the electromagnetic brake linear motor system of above two structure is aluminum steel winding.
Linear electric motors in the electromagnetic brake linear motor system of above two structure can be bilateral secondary, double air gaps knot
Structure, the primary unshakable in one's determination of described linear electric motors is plate shaped, in primary left and right two air gap side unshakable in one's determination perpendicular to primary and secondary
Direction of relative movement fluting, in armature winding, two effective edges of each coil all embed in groove；Secondary is " door " font
Structure, two sides of described " door " character form structure are located at primary left and right two air gap side unshakable in one's determination respectively.
Linear electric motors in above-mentioned electromagnetic brake linear motor system can also include two auxiliary primary iron cores, this straight line
Motor is bilateral secondary, four gap structures, and it is " door " character form structure that described two auxiliary primary iron cores are located at secondary respectively
The outside of two sides, each auxiliary primary is unshakable in one's determination to be uniform air gap and secondary between.
Above-mentioned secondary is nonmagnetic substance secondary, nonmagnetic substance and magnetic material composite secondary, cage modle winding and magnetic
Material cladding is secondary or magnetic material is secondary.
Electromagnetic brake linear motor system described in the control method of electromagnetic brake linear motor system of the present invention
It is any one electromagnetic brake linear motor system aforementioned, described control method is: inverter is controlled using existing control method
The frequency of output current and the work of phase driven linear electric motors, the relative velocity between the mover and stator of described linear electric motors
During for middle and high speed, the frequency of inverter output current and phase place is controlled to make this linear electric motors be operated in dynamic brake pattern；When
When relative velocity between mover and stator is low speed, the frequency of inverter output current and phase place is controlled to make this linear electric motors
It is operated in reversing braking pattern.
In the control method of described electromagnetic brake linear motor system, described linear electric motors are linear permanent magnet synchronous motor,
Control frequency and the phase place of inverter output current, make linear electric motors be operated in dynamic brake pattern.
The armature winding in linear electric motors in the present invention adopts Circular Winding structure, and then effectively reduces winding terminal
Minister's degree, reduces the volume and weight of motor, improves Braking system force density.
In the present invention adopt condenser excitation and increase loss resistance, can improve inverter outlet side power factor with can
By property, reduce inverter output current and loss, reduce the volume and weight of inverter.
Electromagnetic brake linear motor system of the present invention and its control method are not only applicable in field of track traffic
Train braking system, can be applicable to dynamic power machine test, lowering or hoisting gear, the braking of recreation facility isoline driving means
It is with a wide range of applications in system.
Brief description
Fig. 1 is the electronic schematic diagram of the electromagnetic brake linear motor system described in specific embodiment three, four or five.
Fig. 2 is the electronic schematic diagram of the electromagnetic brake linear motor system described in specific embodiment one or two.
Specific embodiment
Specific embodiment one: present embodiment is described referring to Fig. 2.Electromagnetic braking linear electric motors described in present embodiment
System, it includes linear electric motors and inverter, and described system also includes multiphase magnetizing capacitance device group and multiple inductance, described straight line
Motor is plate shaped line inductance electromotor, and this line inductance electromotor includes primary and secondary, described primary include primary unshakable in one's determination and
Armature winding, towards air gap side along having groove perpendicular to primary and secondary direction of relative movement, this groove embeds described primary iron core
Enter to have armature winding, described armature winding is annular multiphase symmetric winding, the outfan of this annular multiphase symmetric winding and inversion
Device connects, and the outfan of this annular multiphase symmetric winding is also parallel with a set of multiphase magnetizing capacitance device group；This multiphase symmetric winding
In the outfan of every phase winding and inverter between all connect an inductance.
Magnetizing capacitance device group in present embodiment has for providing exciting curent for linear electric motors, so can reduce inverse
Become the output current of device, and then reduce capacity and volume, the weight of inverter.
The capacitance of magnetizing capacitance device group in present embodiment and pressure must match with inverter, connect winding.
The system of selection of design parameter, those skilled in the art can calculate acquisition according to the basic driver principle of motor.
Electromagnetic brake linear motor system described in present embodiment can apply in train braking technical field, when should
Used in train braking technical field when, can by electromagnetic braking linear electric motor primary be arranged on train bogie both sides wheel it
Between, rail is secondary as linear electric motors, give inverter and linear electric motors offer initially excitatory using vehicle power (accumulator)
Energy, after linear electric motor primary is passed through exciting curent, can produce travelling-magnetic-field, traveling wave in air gap between the primary and secondary
Magnetic field and rail intersecting chain, meeting inductive loop in rail, vortex is interacted with travelling-magnetic-field, produces and train direct of travel
Contrary electromagnetic system power, this electromagnetic braking power acts on linear electric motor primary (train), makes train deceleration.In train deceleration
While, the kinetic energy of train is converted into the eddy-current loss in the electric energy of linear electric motors output and rail, and the electric energy of output was both permissible
Consume on a set of winding resistance being connected with multiphase magnetizing capacitance device group in linear electric motor primary winding it is also possible to be stored in car
Carry in accumulator.So, both can reduce the temperature rise of rail, and not need to consume the energy of vehicle power, at the same time it can also logical
Overregulate the frequency of inverter output current, extend retro-speed scope, or by realizing low speed and zero using reversing braking
Speed braking.
Specific embodiment two: present embodiment is described referring to Fig. 2.Described in present embodiment and specific embodiment one
The difference of electromagnetic brake linear motor system is, present embodiment increased multiple inductance, the every phase winding in armature winding
Outfan and inverter between connect an inductance.
Shown in Figure 2, it is a kind of structural representation of the electromagnetic brake linear motor system described in present embodiment, should
Planting structure is to be made up of linear electric motors, magnetizing capacitance device group, energy absorption resistor group and inverter, and linear electric motors include primary
And secondary, described primary is mainly made up of primary unshakable in one's determination and armature winding；Primary unshakable in one's determination for plate shaped, primary unshakable in one's determination towards
Air gap side is perpendicularly to the direction of movement fluting, embeds a collar-shaped multiphase symmetric winding in groove, and how relatively the outfan of winding simultaneously connects
Claim magnetizing capacitance device group and energy absorption resistor group, each outfan of inverter is connected with one end of an inductance, often
The other end of individual inductance is all connected with the outfan of a winding.
The inductance that present embodiment increases is connected between inverter and armature winding so that magnetizing capacitance device group and inversion
Mutually isolated between device, in order to avoid short-circuit condition is caused to inverter, make electromagnetic brake linear motor system reliable operation.
Specific embodiment three: present embodiment is described referring to Fig. 1.Electromagnetic braking linear electric motors described in present embodiment
System, it includes linear electric motors and inverter, and described system also includes multiphase magnetizing capacitance device group, and described linear electric motors are flat board
Shape line inductance electromotor, this line inductance electromotor includes primary and secondary, and described primary includes primary unshakable in one's determination and armature winding, institute
State armature winding to be made up of two collar-shaped multiphase symmetric windings, described primary iron core is towards air gap side along perpendicular to primary and secondary
Level direction of relative movement have groove, this groove has been embedded in armature winding, the collar-shaped multiphase in described armature winding symmetrically around
Group is connected with multiphase magnetizing capacitance device group, and another collar-shaped multiphase symmetric winding is connected with inverter.
Present embodiment is differred primarily in that with the electromagnetic brake linear motor system described in specific embodiment one, just
A set of multiphase symmetric winding is increased, the multiphase symmetric winding of increase is parallel with multiphase magnetizing capacitance device group, this swashs in level winding
Chip capacitors group is used for providing exciting curent for linear electric motors, so can reduce the output current of inverter, and then reduces inverse
Become capacity and volume, the weight of device.
The capacitance of magnetizing capacitance device group in present embodiment and pressure must match with inverter, connect winding.
The system of selection of design parameter, those skilled in the art can calculate acquisition according to the basic driver principle of motor.
Electromagnetic brake linear motor system described in present embodiment can apply in train braking technical field, when should
Used in train braking technical field when, can by electromagnetic braking linear electric motor primary be arranged on train bogie both sides wheel it
Between, rail is secondary as linear electric motors, give inverter and linear electric motors offer initially excitatory using vehicle power (accumulator)
Energy, after linear electric motor primary is passed through exciting curent, can produce travelling-magnetic-field, traveling wave in air gap between the primary and secondary
Magnetic field and rail intersecting chain, meeting inductive loop in rail, vortex is interacted with travelling-magnetic-field, produces and train direct of travel
Contrary electromagnetic system power, this electromagnetic braking power acts on linear electric motor primary (train), makes train deceleration.In train deceleration
While, the kinetic energy of train is converted into the eddy-current loss in the electric energy of linear electric motors output and rail, and the electric energy of output was both permissible
Consume on a set of winding resistance being connected with multiphase magnetizing capacitance device group in linear electric motor primary winding it is also possible to be stored in car
Carry in accumulator.So, both can reduce the temperature rise of rail, and not need to consume the energy of vehicle power, at the same time it can also logical
Overregulate the frequency of inverter output current, extend retro-speed scope, or by realizing low speed and zero using reversing braking
Speed braking.
Specific embodiment four: present embodiment and the electromagnetic braking straight-line electric described in specific embodiment one, two or three
The difference of machine system is, described multiphase magnetizing capacitance device group is star-like connection or ring-like (angle-style) connection.
Specific embodiment five: present embodiment, present embodiment and specific embodiment one to four are described referring to Fig. 1
The difference of the electromagnetic brake linear motor system described in one embodiment of meaning is, described system also includes multiphase energy absorption
Resistor group, described multiphase energy absorption resistor group is connected in parallel with multiphase magnetizing capacitance device group.
Present embodiment increased multiphase energy absorption resistor group, and this multiphase energy absorption resistor group is used for consuming instead
The energy of feedback, in actual applications, when a set of winding electricity being connected with multiphase magnetizing capacitance device group in linear electric motor primary winding
When resistance can not meet the energy expenditure of braking, this multiphase energy absorption resistor group of increase realizes braking energy is disappeared
Consumption.
It is to increase this reality on the basis of electromagnetic brake linear motor system described in specific embodiment three shown in Fig. 1
Apply a kind of structural representation of electromagnetic brake linear motor system that the multiphase energy absorption resistor group described in mode obtains, should
Plant structure to be made up of linear electric motors, magnetizing capacitance device group, energy absorption resistor group and inverter.Linear electric motors are mainly by first
Level, secondary and air gap composition.Primary is mainly made up of primary unshakable in one's determination and armature winding；Primary iron core is plate shaped, in primary ferrum
The heart be perpendicularly to the direction of movement fluting towards air gap side, embed two collar-shaped multiphase symmetric windings, the output of a set of winding in groove
Terminate how symmetrical magnetizing capacitance device group and energy absorption resistor group, the output termination inverter of another set of winding.
It is to increase on the basis of electromagnetic brake linear motor system described in specific embodiment one or two shown in Fig. 2
A kind of structural representation of electromagnetic brake linear motor system that the multiphase energy absorption resistor group described in present embodiment obtains
Figure, in this kind of structure, multiphase energy absorption resistor group and the armature winding of linear electric motors and multiphase that present embodiment increases
Magnetizing capacitance device group is connected in parallel.
Specific embodiment six: present embodiment and the electromagnetic brake linear motor system described in specific embodiment five
Difference is, described multiphase energy absorption resistor group is star-like connection or ring-like (angle-style) connection.
Specific embodiment seven: present embodiment and the electricity described in any one embodiment of specific embodiment one to six
The difference of magnetic brake linear induction motor system is, described armature winding is aluminum steel winding.
In this area, the winding of motor is all realized using copper cash, and adopts aluminum steel to make armature winding in present embodiment.
, compared with copper cash, its density is little, resistance big, and easy processing molding for aluminum steel.The quality of winding is occupied in motor
The larger ratio of ratio, therefore present embodiment adopt aluminum steel to make armature winding, can significantly mitigate the quality of motor, and
Reduce the material cost of motor.Because the feature of the easy-formation of aluminum steel is so that the winding processing technique of armature winding becomes letter
Single easy, reduce processing cost.Electromagnetic braking linear electric motors system because the resistance ratio of aluminum steel is larger, described in present embodiment
System is to be operated in generating state, under this state, when the resistance ratio of winding is larger, can without outer meeting resistance so as to structure more
Simply.
Specific embodiment eight: present embodiment and the electricity described in any one embodiment of specific embodiment one to seven
The difference of magnetic brake linear induction motor system is, described linear electric motors are bilateral secondary, double air gaps structure, described linear electric motors
Primary iron core is plate shaped, opens perpendicular to the direction of relative movement of primary and secondary in primary left and right two air gap side unshakable in one's determination
Groove, in armature winding, two effective edges of each coil all embed in groove；Secondary is " door " character form structure, described " door " font
Two sides of structure are located at primary left and right two air gap side unshakable in one's determination respectively.
Specific embodiment nine: present embodiment and the electromagnetic brake linear motor system described in specific embodiment eight
Difference is, described linear electric motors also include two auxiliary primary iron cores, and this linear electric motors is bilateral secondary, four air gap knots
Structure, described two auxiliary primary iron cores are located at the outside of secondary two sides for " door " character form structure respectively, and each auxiliary is just
Level is unshakable in one's determination to be uniform air gap and secondary between.
Specific embodiment ten: present embodiment is to the electromagnetic brake linear motor system described in specific embodiment eight
Restriction further, in present embodiment, described secondary for nonmagnetic substance is secondary, nonmagnetic substance and magnetic material be combined time
Level, cage modle winding and magnetic material composite secondary or magnetic material are secondary.
Secondary in present embodiment can be realized using railway track, and then is applied to the brakes telling train.
Specific embodiment 11: described in this embodiment party is the control method of electromagnetic brake linear motor system, described
Electromagnetic brake linear motor system is the electromagnetic braking straight-line electric described in any one embodiment of specific embodiment one to ten
The structure of machine system, described control method is: controls the frequency of inverter output current and phase place to drive using existing control method
Dynamic linear electric motors work, when the relative velocity between the mover and stator of described linear electric motors is middle and high speed, controls inverter
The frequency of output current and phase place make this linear electric motors be operated in dynamic brake pattern；Relative speed between mover and stator
When spending for low speed, the frequency of inverter output current and phase place is controlled to make this linear electric motors be operated in reversing braking pattern.
Specific embodiment 12: present embodiment is to the electromagnetic braking linear electric motors described in specific embodiment 11
The restriction further of the control method of system, in present embodiment, described low speed refers between the mover of linear electric motors and stator
Relative velocity linear electric motors normal speed less than 1/2nd, remaining speed is middling speed or at a high speed.
Present embodiment defines low speed according to the normal speed of linear electric motors, is generally understood as linear electric motors work specified
Be at a high speed when more than speed, be operated in normal speed with down to normal speed half when it is believed that being middling speed.But in practical situation
In, according to the species of motor different it is possible to also variant, depending on concrete condition will be according to the characteristic of linear electric motors itself.
Specific embodiment 13: present embodiment is to the electromagnetic braking linear electric motors described in specific embodiment 12
The restriction further of the control method of system, described linear electric motors are linear permanent magnet synchronous motor, control inverter output current
Frequency and phase place, make linear electric motors be operated in dynamic brake pattern.
Claims (7)
1. electromagnetic brake linear motor system, it include linear electric motors and inverter it is characterised in that described system also include many
Phase magnetizing capacitance device group and multiple inductance, described linear electric motors are plate shaped line inductance electromotor, and this line inductance electromotor includes
Primary and secondary, described primary includes primary unshakable in one's determination and armature winding, and described primary iron core is towards air gap side along perpendicular to primary
Have groove with secondary direction of relative movement, this groove has been embedded in armature winding, described armature winding is annular multiphase symmetric winding,
The outfan of this annular multiphase symmetric winding is connected with inverter, and the outfan of this annular multiphase symmetric winding is also parallel with a set of
Multiphase magnetizing capacitance device group；All connect between the outfan of every phase winding in this multiphase symmetric winding and inverter an electricity
Sense；
Described secondary is railway track；
Described system also includes multiphase energy absorption resistor group, described multiphase energy absorption resistor group and multiphase magnetizing capacitance
Device group is connected in parallel；
When relative velocity between the mover and stator of described linear electric motors is middle and high speed, control inverter output current
Frequency and phase place make this linear electric motors be operated in dynamic brake pattern；Relative velocity between mover and stator is low speed
When, control the frequency of inverter output current and phase place to make this linear electric motors be operated in reversing braking pattern.
2. electromagnetic brake linear motor system, it include linear electric motors and inverter it is characterised in that described system also include many
Phase magnetizing capacitance device group, described linear electric motors are plate shaped line inductance electromotor, and this line inductance electromotor includes primary and secondary,
Described primary inclusion primary iron core and armature winding, described armature winding is made up of two collar-shaped multiphase symmetric windings, described
Towards air gap side along having groove perpendicular to primary and secondary direction of relative movement, this groove has been embedded in armature winding to primary iron core,
A collar-shaped multiphase symmetric winding in described armature winding is connected with multiphase magnetizing capacitance device group, and another collar-shaped multiphase is symmetrical
Winding is connected with inverter；
Described secondary is railway track；
Described system also includes multiphase energy absorption resistor group, described multiphase energy absorption resistor group and multiphase magnetizing capacitance
Device group is connected in parallel；
When relative velocity between the mover and stator of described linear electric motors is middle and high speed, control inverter output current
Frequency and phase place make this linear electric motors be operated in dynamic brake pattern；Relative velocity between mover and stator is low speed
When, control the frequency of inverter output current and phase place to make this linear electric motors be operated in reversing braking pattern.
3. electromagnetic brake linear motor system according to claim 1 and 2 is it is characterised in that described armature winding is aluminum
Line winding.
4. electromagnetic brake linear motor system according to claim 1 and 2 is it is characterised in that described linear electric motors are double
Side is secondary, double air gaps structure, and the primary unshakable in one's determination of described linear electric motors is plate shaped, hangs down in primary left and right two air gap side unshakable in one's determination
The straight direction of relative movement fluting in primary and secondary, in armature winding, two effective edges of each coil all embed in groove；
Secondary is " door " character form structure, and two sides of described " door " character form structure are located at primary left and right two air gap unshakable in one's determination respectively
Side.
5. electromagnetic brake linear motor system according to claim 4 is it is characterised in that described linear electric motors also include two
Individual auxiliary primary is unshakable in one's determination, and this linear electric motors is bilateral secondary, four gap structures, and described two auxiliary primary iron cores are located at respectively
The outside of secondary two sides for " door " character form structure, each auxiliary primary is unshakable in one's determination to be uniform air gap and secondary between.
6. electromagnetic brake linear motor system according to claim 1 and 2 is it is characterised in that described secondary is non magnetic
Material secondary, nonmagnetic substance and magnetic material composite secondary, cage modle winding and magnetic material composite secondary or magnetic material
Secondary.
7. electromagnetic brake linear motor system according to claim 1 and 2 is it is characterised in that described linear electric motors are straight
Line permagnetic synchronous motor, controls frequency and the phase place of inverter output current, makes linear electric motors be operated in dynamic brake pattern.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410050234.7A CN103762821B (en) | 2014-02-13 | 2014-02-13 | electromagnetic brake linear motor system and control method thereof |
| PCT/CN2015/070449 WO2015120757A1 (en) | 2014-02-13 | 2015-01-09 | Electromagnetic-braking linear motor system and method of controlling same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410050234.7A CN103762821B (en) | 2014-02-13 | 2014-02-13 | electromagnetic brake linear motor system and control method thereof |
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| CN103762821B (en) * | 2014-02-13 | 2017-01-18 | 哈尔滨工业大学 | electromagnetic brake linear motor system and control method thereof |
| CN105083029B (en) * | 2015-09-06 | 2017-11-03 | 哈尔滨工业大学 | AC excitation High-Speed Eddy Braking device and its braking method |
| CN105196880B (en) * | 2015-09-06 | 2018-01-30 | 哈尔滨工业大学 | Alternating current-direct current composite excitation High-Speed Eddy Braking device |
| CN107911047A (en) * | 2018-01-09 | 2018-04-13 | 福建船政交通职业学院 | Reversing braking control electric wiring based on noise measuring |
| CN111934300A (en) * | 2020-06-29 | 2020-11-13 | 苏州艾克威尔科技有限公司 | Method for removing floating voltage of semiconductor controlled silicon |
| CN112230145B (en) * | 2020-10-16 | 2024-04-19 | 中车永济电机有限公司 | Modularized linear induction motor rotation test device |
| CN113085563B (en) * | 2021-04-21 | 2023-04-07 | 中国第一汽车股份有限公司 | Retarding braking method and device for electric vehicle |
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| Publication number | Publication date |
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| WO2015120757A1 (en) | 2015-08-20 |
| CN103762821A (en) | 2014-04-30 |
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