CN102931907A - Energy-saving transportation system based on permanent-magnet linear motor - Google Patents
Energy-saving transportation system based on permanent-magnet linear motor Download PDFInfo
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- CN102931907A CN102931907A CN2012104595017A CN201210459501A CN102931907A CN 102931907 A CN102931907 A CN 102931907A CN 2012104595017 A CN2012104595017 A CN 2012104595017A CN 201210459501 A CN201210459501 A CN 201210459501A CN 102931907 A CN102931907 A CN 102931907A
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Abstract
The invention relates to an energy-saving transportation system based on a permanent-magnet linear motor, which comprises a permanent-magnet linear motor body, a plurality of pressure generation devices and a plurality of variable frequency driving and feedback devices, wherein the pressure generation devices and the variable frequency driving and feedback devices are connected with the body by circuits. According to the invention, a double-sided linear motor is adopted, so that the lifting power is improved and the normal attraction is also avoided; and the multi-carriage transportation is adopted, so that the utilization rate is effectively improved; when a weight is lowered down, the motor is adopted to feed to a power grid, and when the weight is close to the bottom of the system, a pressure generation system is formed by utilizing piezoelectric polymer. The energy-saving transportation system has the outstanding characteristics of energy conservation and emission reduction, pays close attention to the livelihood safety, has a simple structure, works in a contactless manner, is low in noise, high efficiency, response speed and accuracy and wide in application range, is stable and reliable, can be widely used in the fields of transportation, electromagnetic emission, machine tools, oil fields, mines, buildings and the like and can be used for a magnetic suspension system after being slightly improved. The energy-saving transportation system not only brings novel ideas and thinking to the search on the motor theory, but also has a wide application prospect, so that the application of the linear motor is gradually industrialized.
Description
Technical field
The present invention relates to a kind of energy-conservation transportation system based on permanent-magnetism linear motor.
Background technology
Along with the increase of population and the day by day exhaustion of shallow surface resource, skyscraper is constantly to aerial extension, energy extraction constantly extends to deep layer, advanced technology of Machine Tool, the particularly develop rapidly of power electronic technology, modern control theory and computer technology is had higher requirement to the saving energy, saving space, hoisting power, lifting safety, service performance and the service quality etc. of elevator.If still adopt traditional rope traction Lifting scheme will run into the problem that is difficult to overcome
In sum, permanent-magnetism linear motor is widely used in the fields such as communications and transportation, electromagnetic emission, lathe, oil field, mine, building, therefore adopts permanent magnet linear synchronous motor to realize in the high-performance occasion, becomes one of focus of research and development.For the defective of prior art, need especially a kind of energy-conservation transportation system based on permanent-magnetism linear motor, to solve above-mentioned problem.
Summary of the invention
The invention provides a kind of energy-conservation transportation system based on permanent-magnetism linear motor, simple in structure, contactless operation, noise is low, and efficient is high; Reliable and stable, response is fast, and precision is high, and is applied widely.
In order to achieve the above object, the invention provides a kind of energy-conservation transportation system based on permanent-magnetism linear motor, it is characterized in that, this system comprises the permanent-magnetism linear motor body, and circuit connects some pressure generating sets and frequency conversion drive and the feedback device of body;
Described pressure generating set is booster type Boost circuit.
Described permanent-magnetism linear motor body comprises base, is arranged on girder steel assembly and track on the base, also comprises primary component and secondary component;
Described track doubles as guided way and braking rail;
Described primary component is laid in orbit, and dependence girder steel assembly is fixed and supported, and this primary component comprises linear electric motor primary iron core and linear electric motor primary winding;
Described secondary component comprises secondary iron core and secondary permanent magnet, and this secondary iron core is the compartment base.
Described primary component is the elementary iron core of segmented three-phase symmetrical and armature winding.
Described permanent-magnetism linear motor body adopts uniform symmetrical structure.
Described permanent-magnetism linear motor body is arranged to arc or circle.
Described booster type Boost circuit comprises power unit, control circuit, filter circuit and the load that circuit connects;
Described power unit is piezoelectric unit, and this piezoelectric unit is arranged on the base of permanent-magnetism linear motor body;
Described load is the DC power supply load of the energy-conservation transportation system based on permanent-magnetism linear motor of the present invention;
Described control circuit comprises switch element and the comparison circuit that circuit connects;
Described filter circuit comprises inductance, diode and the electric capacity that circuit connects.
Described piezoelectric unit adopts the piezoelectric ceramic polymer.
Described switch element is power transistor or IGBT insulated gate gate pole transistor.
Described frequency conversion drive and feedback device comprise inverter circuit, current detection circuit and photoelectric code disk, described inverter circuit connects elementary three phase windings of permanent-magnetism linear motor body, described current detection circuit connects U, V, the W three-phase circuit of inverter circuit, and described photoelectric code disk connects the secondary of permanent-magnetism linear motor body; This also comprises digital signal processor frequency conversion drive and feedback device, this digital signal processor circuit connects current detection circuit, connect photoelectric code disk by the photoelectric code disk interface circuit, connect inverter circuit by the driving isolation circuit, this frequency conversion drive and feedback device also comprise LCD display circuit, the velocity simulate control inputs interface circuit that circuit connects described digital signal processor and are connected communication interface circuit the controller that connects described digital signal processor.
Described inverter circuit is the three phase full bridge inverter circuit.
The present invention adopts the double-flanged end linear electric motors, increase lifting force and avoided again the normal direction attraction, adopt the transportation of many compartments, utilance effectively improves, when transferring, adopt on weight motor to the electrical network feed, and utilize piezopolymer decomposition pressure electricity generation system during near the system bottom, beneficial effect of the present invention is: outstanding energy-saving and emission-reduction; The safety of paying close attention to the well-being of the people; Simple in structure, contactless operation, noise is low, and efficient is high; Reliable and stable, response is fast, and precision is high, and is applied widely, is widely used in the fields such as communications and transportation, electromagnetic emission, lathe, oil field, mine, building, improves a little just to can be used for magnetic suspension system.Brought new idea and thinking not only for the research of electric machine theory itself, and be with a wide range of applications, make the increasingly industrialization of application of linear electric motors.
Description of drawings
Fig. 1 is the structural representation of the motor body of a kind of energy-conservation transportation system based on permanent-magnetism linear motor of the present invention;
Fig. 2 is the electrical block diagram of the pressure generating set of a kind of energy-conservation transportation system based on permanent-magnetism linear motor of the present invention;
Fig. 3 is the frequency conversion drive of a kind of energy-conservation transportation system based on permanent-magnetism linear motor of the present invention and the electrical block diagram of feedback device.
Embodiment
Followingly specify preferred embodiment of the present invention according to Fig. 1～Fig. 3.
The invention provides a kind of energy-conservation transportation system based on permanent-magnetism linear motor, this system comprises the permanent-magnetism linear motor body, and circuit connects some pressure generating sets and frequency conversion drive and the feedback device of body;
As shown in Figure 1, described permanent-magnetism linear motor body comprises base 6, is arranged on girder steel assembly 8 and track 1 on the base 6, also comprises primary component and secondary component;
Described track 1 doubles as guided way and braking rail;
Described primary component is laid on the track 1, relies on the 8 fixing and supports of girder steel assembly, and this primary component comprises linear electric motor primary unshakable in one's determination 2 and linear electric motor primary winding 3; Described primary component is the elementary iron core of segmented three-phase symmetrical and armature winding;
Described secondary component comprises secondary unshakable in one's determination 4 and secondary permanent magnet 5, and this secondary unshakable in one's determination 4 is the compartment base;
Native system adopts uniform symmetrical structure, establishment the normal direction attraction of bearing during collateral motion, reduced mechanical strength, improved payload, adopt segmentation three-phase symmetrical armature winding, can realize that many compartments move simultaneously, if the permanent-magnetism linear motor body is arranged to special shape (such as arc, circle), secondary can being arranged symmetrically with realized multistage transportation on every side, motor body is designed to segmentation can realize the segmentation transportation, can realize multistage many compartments circulation transportation, space availability ratio effectively improves, and system effectiveness obviously improves.
As shown in Figure 2, described pressure generating set is booster type Boost circuit, and this booster type Boost circuit comprises power unit, control circuit, filter circuit and the load R1 that circuit connects;
Described power unit is piezoelectric unit 7, and this piezoelectric unit 7 is arranged on the base 6 of permanent-magnetism linear motor body, and this piezoelectric unit 7 adopts the piezoelectric ceramic polymer;
Described load R1 is the DC power supply load of the energy-conservation transportation system based on permanent-magnetism linear motor of the present invention;
Described control circuit comprises switch element and the comparison circuit 9 that circuit connects;
Described switch element is power transistor or IGBT(insulated gate gate pole transistor);
Described filter circuit comprises inductance L, diode D and the capacitor C that circuit connects;
Arrive energy-conservation transportation system bottom in the compartment, behind the contact piezoelectric ceramic polymer, certain deformation occurs and accurately locates in the piezoelectric ceramic polymer, after the piezoelectric ceramic polymer is relaxed, just produced low-frequency voltage, help the compartment starting, this low-frequency voltage is converted into high voltage direct current by booster type Boost circuit, and the direct voltage of the pressure generating set output that direct voltage and the Boost booster circuit of other piezoelectric ceramic polymer of output formed is connected, consist of generator unit, or be that the 220V AC power is supplied with energy-conservation transportation system and done system power supply with direct voltage by DC-AC conversion inversion;
Comparison circuit 9 utilizes adjustable potentiometer to carry out dividing potential drop and obtains reference voltage, reference voltage U
REFAfter comparing with the output voltage of booster type Boost circuit, produce variable rectangular pulse signal, the merit switch element is under the control of comparison circuit 9, and switch replaces break-make, realizes regulating duty ratio and then control output voltage; This comparison circuit 9 adopts integrated transporting discharging (OP07);
Rectangular pulse signal in the Boost booster circuit produces level and smooth high-voltage dc voltage behind filter circuit, for illumination, dynamic braking;
Described frequency conversion drive and feedback device comprise inverter circuit 101, current detection circuit 102 and photoelectric code disk 103, described inverter circuit 101 connects elementary three phase windings of permanent-magnetism linear motor body, described current detection circuit 102 connects U, V, the W three-phase circuit of inverter circuit 101, and described photoelectric code disk 103 connects the secondary of permanent-magnetism linear motor body;
This also comprises digital signal processor 105 frequency conversion drive and feedback device, these digital signal processor 105 circuit connect current detection circuit 102, connect photoelectric code disk 103 by photoelectric code disk interface circuit 103, connect inverter circuits by driving isolation circuit 106, this frequency conversion drive and feedback device also comprise LCD display circuit 107, the velocity simulate control inputs interface circuit 109 that circuit connects described digital signal processor 105 and the controller 110 that be connected the described digital signal processor 105 of communication interface circuit 108 connections;
Described inverter circuit 101 is the three phase full bridge inverter circuit, makes the true field that produces remove to approach circular field in conjunction with the different switching modes of inverter the direct current after the rectification, and this inverter circuit 101 adopts IPM Intelligent Power Module;
Described current detection circuit 102 is for detection of elementary U, V, the W three-phase current of permanent-magnetism linear motor;
Described photoelectric code disk 103 is by the secondary drive of permanent-magnetism linear motor, produces the signal corresponding with time step velocity, and the rate signal comparison with given obtains error signal, controlling the electric current of elementary each phase winding, thus can the volitional check downstream rate;
Described digital signal processor 105 utilizes vector control method, produces 6 road pulse-width modulation PWM signals are controlled power switch pipe in the inverter circuit 101 through driving isolation circuit 106 conducting and cut-off, realizes digital transmission control;
Described driving isolation circuit 106 is used for driving isolation inverter circuit 101;
The information such as described LCD display circuit 107 display speeds;
Described communication interface circuit 108 turns serial communication interface SCI with the RS232 interface, is used for the level conversion of controller 110 and digital signal processor 105;
Described velocity simulate control inputs interface circuit 109 is used for the mode supplied with digital signal processor 105 of speed control signal to simulate with artificial given input;
Adopt
Vector control method, current detection circuit 102 detects U, V, W three-phase current, after being tied to the conversion (being C1arke) of two-phase rest frame and conversion (being Park) conversion that the two-phase static coordinate is tied to the two-phase rotating coordinate system through the three phase static coordinate, Space current vector
Resolve into torque current component
And excitation current component
, these two electric currents and given current ratio are regulated and anti-Park conversion by overregulating device, generate the input of vector arithmetic unit
With
, generating the trigger impulse of controlling inverter circuit 101 on off states after the vector calculus, the mass action of frequency conversion drive and feedback device is will produce the three-phase alternating current feedback grid when reaching constant speed and high speed after the realization frequency control is stablized.
After current detection circuit 102 detects permanent-magnetism linear motor and AC power disconnection, direct current digital signal processor 105 passes into bridge rectifier by driving isolation circuit 106 driving inverter circuits 101 in the armature winding of permanent-magnetism linear motor after, the kinetic energy of the secondary and load of permanent-magnetism linear motor is under the effect in magnetic field, discharge with electric energy, thereby realize the outage dynamic brake of motor, the high speed dynamic brake is (namely when the inferior step velocity of permanent-magnetism linear motor is synchronizing speed above stator field speed, the direction of the induced potential of the armature winding of permanent-magnetism linear motor changes, faradic direction also changes thereupon, and this moment, electromagnetic torque was brake torque.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. the energy-conservation transportation system based on permanent-magnetism linear motor is characterized in that, this system comprises the permanent-magnetism linear motor body, and circuit connects some pressure generating sets and frequency conversion drive and the feedback device of body;
Described pressure generating set is booster type Boost circuit.
2. the energy-conservation transportation system based on permanent-magnetism linear motor as claimed in claim 1, it is characterized in that, described permanent-magnetism linear motor body comprises base (6), is arranged on girder steel assembly (8) and track (1) on the base (6), also comprises primary component and secondary component;
Described track (1) doubles as guided way and braking rail;
Described primary component is laid on the track (1), relies on girder steel assembly (8) to fix and support, and this primary component comprises linear electric motor primary iron core (2) and linear electric motor primary winding (3);
Described secondary component comprises secondary iron core (4) and secondary permanent magnet (5), and this secondary iron core (4) is the compartment base.
3. the energy-conservation transportation system based on permanent-magnetism linear motor as claimed in claim 2 is characterized in that, described primary component is the elementary iron core of segmented three-phase symmetrical and armature winding.
4. the energy-conservation transportation system based on permanent-magnetism linear motor as claimed in claim 2 is characterized in that, described permanent-magnetism linear motor body adopts uniform symmetrical structure.
5. the energy-conservation transportation system based on permanent-magnetism linear motor as claimed in claim 2 is characterized in that, described permanent-magnetism linear motor body is arranged to arc or circle.
6. the energy-conservation transportation system based on permanent-magnetism linear motor as claimed in claim 1 is characterized in that, described booster type Boost circuit comprises power unit, control circuit, filter circuit and the load (R1) that circuit connects;
Described power unit is piezoelectric unit (7), and this piezoelectric unit (7) is arranged on the base (6) of permanent-magnetism linear motor body;
Described load (R1) is the dc supply load of the energy-conservation transportation system based on permanent-magnetism linear motor of the present invention;
Described control circuit comprises switch element and the comparison circuit (9) that circuit connects;
Described filter circuit comprises inductance (L), diode (D) and the electric capacity (C) that circuit connects.
7. the energy-conservation transportation system based on permanent-magnetism linear motor as claimed in claim 6 is characterized in that, described piezoelectric unit (7) adopts the piezoelectric ceramic polymer.
8. the energy-conservation transportation system based on permanent-magnetism linear motor as claimed in claim 6 is characterized in that, described switch element is power transistor or IGBT insulated gate gate pole transistor.
9. the energy-conservation transportation system based on permanent-magnetism linear motor as claimed in claim 1, it is characterized in that, described frequency conversion drive and feedback device comprise inverter circuit (101), current detection circuit (102) and photoelectric code disk (103), described inverter circuit (101) connects elementary three phase windings of permanent-magnetism linear motor body, described current detection circuit (102) connects U, V, the W three-phase circuit of inverter circuit (101), and described photoelectric code disk (103) connects the secondary of permanent-magnetism linear motor body; This also comprises digital signal processor (105) frequency conversion drive and feedback device, this digital signal processor (105) circuit connects current detection circuit (102), connect photoelectric code disk (103) by photoelectric code disk interface circuit (103), connect inverter circuit by driving isolation circuit (106), this frequency conversion drive and feedback device also comprise the LCD display circuit (107) that circuit connects described digital signal processor (105), velocity simulate control inputs interface circuit (109) and the controller (110) that is connected communication interface circuit (108) and connects described digital signal processor (105).
10. the energy-conservation transportation system based on permanent-magnetism linear motor as claimed in claim 1 is characterized in that, described inverter circuit (101) is the three phase full bridge inverter circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104595017A CN102931907A (en) | 2012-11-15 | 2012-11-15 | Energy-saving transportation system based on permanent-magnet linear motor |
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| CN2012104595017A CN102931907A (en) | 2012-11-15 | 2012-11-15 | Energy-saving transportation system based on permanent-magnet linear motor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346721A (en) * | 2013-06-19 | 2013-10-09 | 江苏大学 | Thrust ripple suppressing method of primary permanent magnet linear motor |
| CN104348398A (en) * | 2014-10-29 | 2015-02-11 | 华南农业大学 | Drive control device and method of macro-micro drive piezoelectric liner motor |
| CN105449976A (en) * | 2014-08-28 | 2016-03-30 | 上海微电子装备有限公司 | Permanent-magnet linear motor drive device and control method |
| CN108284770A (en) * | 2018-03-02 | 2018-07-17 | 西南交通大学 | A kind of high temperature superconductor magnetic levitation vehicle of permanent magnetic linear synchronous motor driving |
| CN108988687A (en) * | 2018-09-13 | 2018-12-11 | 深圳三火科技有限公司 | A kind of curve motor |
| CN114384449A (en) * | 2022-03-22 | 2022-04-22 | 天津滨海高新区河工电器科技有限公司 | Three-dimensional space vector magnetism measuring device and method |
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| US4504761A (en) * | 1981-12-28 | 1985-03-12 | Triplett Charles G | Vehicular mounted piezoelectric generator |
| CN1633009A (en) * | 2005-01-04 | 2005-06-29 | 西安交通大学 | Method and system for piezoelectric power generation by using vibration energy of road system |
| CN101266497A (en) * | 2008-03-06 | 2008-09-17 | 华中科技大学 | Large power long range permanent magnetism synchronous linear motor servo drive apparatus |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346721A (en) * | 2013-06-19 | 2013-10-09 | 江苏大学 | Thrust ripple suppressing method of primary permanent magnet linear motor |
| CN105449976A (en) * | 2014-08-28 | 2016-03-30 | 上海微电子装备有限公司 | Permanent-magnet linear motor drive device and control method |
| CN105449976B (en) * | 2014-08-28 | 2018-06-01 | 上海微电子装备（集团）股份有限公司 | The driving device and control method of a kind of permanent-magnetism linear motor |
| CN104348398A (en) * | 2014-10-29 | 2015-02-11 | 华南农业大学 | Drive control device and method of macro-micro drive piezoelectric liner motor |
| CN104348398B (en) * | 2014-10-29 | 2016-12-07 | 华南农业大学 | The driving control device and method of macro and micro servo piezoelectric linear motor |
| CN108284770A (en) * | 2018-03-02 | 2018-07-17 | 西南交通大学 | A kind of high temperature superconductor magnetic levitation vehicle of permanent magnetic linear synchronous motor driving |
| CN108284770B (en) * | 2018-03-02 | 2023-07-18 | 西南交通大学 | High-temperature superconductive magnetic levitation vehicle driven by permanent magnet synchronous linear motor |
| CN108988687A (en) * | 2018-09-13 | 2018-12-11 | 深圳三火科技有限公司 | A kind of curve motor |
| CN114384449A (en) * | 2022-03-22 | 2022-04-22 | 天津滨海高新区河工电器科技有限公司 | Three-dimensional space vector magnetism measuring device and method |
| CN114384449B (en) * | 2022-03-22 | 2022-07-26 | 河北工业大学 | Three-dimensional space vector magnetism measuring device and method |
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Application publication date: 20130213 |