CN206559200U - The box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors - Google Patents
The box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors Download PDFInfo
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- CN206559200U CN206559200U CN201720085909.0U CN201720085909U CN206559200U CN 206559200 U CN206559200 U CN 206559200U CN 201720085909 U CN201720085909 U CN 201720085909U CN 206559200 U CN206559200 U CN 206559200U
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Abstract
The utility model is related to a kind of box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors, it is characterized in that, the drive system includes permanent magnet direct driving motor, frequency converter, explosion-resistant enclosure and water cooling pipeline composition, arranged above and below the frequency converter, motor, water cooling pipeline is scattered in explosion-resistant enclosure, water route is integrally connected in series, and inverter section includes power section and control section；Due to using permanent magnet direct-driven type of drive, reductor unit is eliminated, direct drive load simplifies system drive part, and permanent magnet direct driving motor improves system power factor, reduces excitation loss, and overall efficiency gets a promotion.Simultaneously because system element is less, maintenance reduction, reliability is increased.
Description
Technical field
The utility model is related to a kind of drive system, and in particular to a kind of permanent magnet direct-driven explosion-proof variable frequency variable speed motor combination
Formula drive system, belongs to Electric Machines and Electric Apparatus field.
Background technology
The frequency converter motor driven systems used in explosion-proof environment by space due to being limited, and tool is expected in electromagnetic environment limitation
Standby small volume, drive system is simple, and Electro Magnetic Compatibility is good, the frequency converter motor driven systems of efficiency high.
Frequency conversion speed-adjusting system employed in explosion-proof environment, more by explosion-proof frequency converter monomer, asynchronous machine monomer, reductor
Monomer, load monomer composition, or by explosion-proof asynchronous machine all-in-one monomer, reductor monomer, load monomer composition.Both
Drive system is required for reductor to transmit energy and lifting torque, considerably increases the complexity of system, reduces the effect of system
Rate, increases the cost of system.
In both application systems, the former relatively disperses at system, causes each single body radiating system complex；And each monomer is due to needing
Separate flameproof performance design is wanted to cause bulky, cost is larger；Simultaneously because being needed between frequency converter monomer and motor monomer
Power cable is connected, causes the electromagnetic disturbance to peripheral system larger.Driven for the latter's frequency control all-in-one and reductor
System, as a result of the combination of frequency converter and asynchronous machine, reduces volume, cost and electromagnetic disturbance to a certain extent,
But due to still using asynchronous machine as driver element, cause system power factor still relatively low, and still need reductor and gear
Case causes system loss to increase, overall efficiency is still relatively low as the lifting of transmission and the torque of energy, and system maintenance amount is larger.
Further, since conventional permagnetic synchronous motor needs to rely on rare earth permanent-magnetic material, its Costco Wholesale is too high, Er Qieyuan
Material does not have recyclability.If existing Conventional permanent magnet synchronous motor directly is greatly reduced using the meeting of ferrite permanent-magnet materials
Performance.And although existing permanent magnet reluctance motor has broken away from the dependence to rare earth material, but it easily loses in structure
Magnetic, especially when motor is heavily loaded, loss of excitation situation is more serious, also, existing permanent magnet reluctance motor is less efficient.In view of on
Problem is stated, those skilled in the art has attempted to new scheme, but the problem never has and properly settled.
Utility model content
There is provided a kind of permanent magnet direct-driven flame-proof converter exactly for technical problem present in prior art for the utility model
Buncher modular drive system, the technical scheme is simple in construction, efficiency high, while integrating frequency converter, forms integral type and drives
Dynamic system, i.e. system are directly driven all-in-one monomer, load monomer composition by anti-explosion permanent magnet.Due to using frequency converter and permanent magnet direct-drive electricity
Machine integral structure, incorporates each decentralized system, reduces system bulk, reduces the electromagnetic disturbance of system, simplifies system
Radiating.Due to using permanent magnet direct-driven type of drive, reductor unit is eliminated, direct drive load simplifies system drive
Dynamic part, and permanent magnet direct driving motor improves system power factor, reduces excitation loss, overall efficiency gets a promotion.
Simultaneously because system element is less, maintenance reduction, reliability is increased.
To achieve these goals, the technical solution of the utility model is as follows, a kind of permanent magnet direct-driven explosion-proof variable frequency variable speed
The box-like drive system of group of motors, it is characterised in that the drive system include permanent magnet direct driving motor, frequency converter, explosion-resistant enclosure with
And water cooling pipeline is constituted, arranged above and below the frequency converter, motor, water cooling pipeline is scattered in explosion-resistant enclosure, and water route is integrally connected
Connection, inverter section includes power section and control section.
As a kind of improvement of the present utility model, the permanent magnet direct driving motor includes rotating shaft, rotor iron successively from inside to outside
Core, ferrite permanent magnet, stator winding, stator core and outer casing base, the rotor core are worn in the form of punching is laminated
Cross and permanent magnet mounting groove is uniform-distribution with rotating shaft, rotor core, the ferrite permanent magnet is bonded at shape in permanent magnet mounting groove
Into even number of poles, stator winding is that enamel insulated wire is made and is uniformly embedded into stator slot, and the stator core is fixed on
On motor housing, be provided between the stator core and rotor core on air gap, the stator core be uniformly distributed it is multiple fixed
Stator winding is equipped with sub-line groove, each stator slot, stator winding is that enamel-covered wire coiling is formed.The technical scheme avoids high temperature
High pressure is demagnetized, with anti-saliency, and permanent magnet direct-driven motor combines permagnetic synchronous motor high efficiency and high power density is special
Property, while only needing the permanent magnetic field of the relative weak of ferrite permanent-magnet materials generation.The wind-tunnel designed in quadrature axis forms peculiar
Anti- salient pole nature, the anti-demagnetization characteristic of motor greatly improved, while ensure that motor has higher efficiency, and does not subtract
Its weak mechanical strength.
As it is of the present utility model it is a kind of improve, the wherein even number of poles in permanent magnet mounting groove, per pole permanent magnet into
The isosceles trapezoid arrangement of lower open-ended, and have the wind-tunnel i.e. air magnetic barrier of isosceles trapezoid between every pole.
As a kind of improvement of the present utility model, the wind-tunnel of the isosceles trapezoid is symmetrically distributed in rotor rotating coordinate system
On quadrature axis axis, isosceles trapezoid is upper bottom close to the side of rotating shaft, is to go to the bottom close to the side of stator, and bottom does not join with air gap
It is logical.Such a design also ensure that the rigidity of structure of rotor on the basis of it ensure that ventilation.
As a kind of improvement of the present utility model, the height of the air magnetic barrier is more than the width of permanent magnet mounting groove, and
The upper bottom of air magnetic barrier is without departing from permanent magnet mounting groove.
As a kind of improvement of the present utility model, the stator core is that punching is overrided to form or castable；Rotor iron
Core is that silicon steel punching is overrided to form or castable.
As a kind of improvement of the present utility model, the frequency converter includes power section and control section, wherein power part
Dividing includes wire inlet unit, uncontrollable rectifier unit, DC filter capacitor unit, inversion unit and the noninductive bus unit of power；Institute
Control section is stated including motor vector control unit and sensor unit, wherein three-phase inlet wire alternating current, by not controlling direct current
Turn into direct current behind road, turn into the exchange electric drive motor of variable voltage variable frequency, motor vector control after electric capacity, inverter circuit after filtering
Unit processed is formed the control wave met to provisioning request, driven inverse by collection voltages current signal, by analysis computing
Become the IGBT of unit, final output meets desired speed and torque.
As a kind of improvement of the present utility model, transducer power part uses hierarchical layout, and bottom is heat dissipating layer, second
Layer is power device layer, and third layer is auxiliary device layer.The uncontrollable rectifier unit is constituted using commutation diode series system
Three-phase uncontrollable rectifier bridge, to meet the pressure-resistant demand of high pressure incoming power.
As a kind of improvement of the present utility model, power section is convenient to install and safeguard by framework one entirety of formation,
Power device IGBT and commutation diode are positioned over above copper base, and copper base is positioned over above water cooling pipeline, are put on copper base
Put temperature sensor.Control unit is controlled single by signal processing unit, control CPU element, pulse-triggered unit, constructing communication network
Member, human-computer dialogue unit composition.The sensor unit is passed by current acquisition sensor, voltage acquisition sensor, temperature acquisition
Sensor is constituted；Lower leaf is placed on inversion unit and DC filter capacitor unit, and inversion unit uses IGBT as power device,
Electric capacity uses thin-film capacitor, and inversion unit major loop uses NPC three-level structures, and inversion unit IGBT and electric capacity are using noninductive folded
Layer bus is attached.
As a kind of improvement of the present utility model, water cooling pipeline includes motor body pipeline 41, frequency converter cooled plate pipeline
42 and motor front and rear cover pipeline 43, three kinds of pipelines use cascade on the whole, local using being connected in parallel form, motor
Main body pipeline is radiated using spiral channel structure to stator winding, and frequency converter cooled plate pipeline is mixed using connection in series-parallel to be connected
Connect, power device is radiated using Zigzag type groove profile water channel, motor front and rear cover pipeline water channel uses cast water channel, to preceding
Bearing is radiated afterwards.
Relative to prior art, the utility model has the following advantages that, 1）The technical scheme global design is ingenious, structure is tight
Gather；2）, the technical scheme integrates frequency converter, forms integral type drive system, i.e. system and directly drive all-in-one by anti-explosion permanent magnet simultaneously
Monomer, load monomer composition, due to using frequency converter and permanent magnet direct driving motor integral structure, incorporate each decentralized system, contract
System bulk is subtracted, has reduced the electromagnetic disturbance of system, simplified the radiating of system, due to using permanent magnet direct-driven driving side
Formula, eliminates reductor unit, direct drive load simplifies system drive part, and permanent magnet direct driving motor is improved
System power factor, reduces excitation loss, and overall efficiency gets a promotion.Simultaneously because system element is less, maintenance
Reduction, reliability is increased；3）Permanent magnet direct driving motor in the technical scheme improves motor load function, reduces simultaneously
The demagnetization effects of Stator energization current, especially in motor heavy service, effect becomes apparent from,In addition, the presence of deep trouth coordinates motor
The radiator fan of end can further reduce internal rotor temperature, reduce the possibility of high temperature demagnetization, the permanent magnetism proposed
Body position is distributed and can improve the efficiency of motor All Speed Range with the respective outer side edges of wind-tunnel；4）The technical scheme cost is relatively low,
It is easy to large-scale popularization and application.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is permanent magnet direct driving motor structural representation of the present utility model；
Fig. 3 is frequency changer schematic diagram of the present utility model；
Fig. 4-1,4-2,4-3 are water cooling pipeline structure schematic diagrames of the present utility model；
In figure：1st, permanent magnet direct driving motor, 2, frequency converter, 3, explosion-resistant enclosure, 4, water cooling pipeline composition, 21, stator core,
22nd, stator slot, 23, stator winding, air-gap between 24, rotor, 25, rotor core, 26, permanent magnet mounting groove, 27, iron oxygen
Body permanent magnet, 28, air magnetic barrier, 29, rotating shaft, 31, wire inlet unit, 32, uncontrollable rectifier unit, 33, DC filter capacitor unit,
34th, inversion unit, 35, power is noninductive bus unit, 36, sensor unit, 37, copper base.
Embodiment：
In order to deepen to understand of the present utility model, the present embodiment is described in detail below in conjunction with the accompanying drawings.
Embodiment 1：Referring to Fig. 1, Fig. 2, a kind of box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors is described
Drive system includes permanent magnet direct driving motor 1, frequency converter 2, explosion-resistant enclosure 3 and water cooling pipeline composition 4, the frequency converter 2, motor
About 1 arrangement, water cooling pipeline is scattered in explosion-resistant enclosure, and water route is integrally connected in series, inverter section include power section and
Control section；The permanent magnet direct driving motor includes rotating shaft 29 successively from inside to outside, rotor core 25, ferrite permanent magnet 27, fixed
Sub- winding 23, stator core 21 and outer casing base, the rotor core 25 pass through rotating shaft, rotor iron in the form of punching is laminated
Permanent magnet mounting groove is uniform-distribution with core, the ferrite permanent magnet is bonded in permanent magnet mounting groove and forms even number of poles,
Stator winding is that enamel insulated wire is made and is uniformly embedded into stator slot, and the stator core 21 is fixed on motor housing,
It is provided between the stator core and rotor core on air gap, the stator core and is uniformly distributed multiple stator slots 2, each
Stator winding 3 is equipped with stator slot, stator winding is that enamel-covered wire coiling is formed.Motor in the technical scheme avoids high temperature high
Pressure is demagnetized, with anti-saliency, and permanent magnet direct-driven motor combines permagnetic synchronous motor high efficiency and high power density characteristic,
The permanent magnetic field of the relative weak of ferrite permanent-magnet materials generation is only needed simultaneously.The wind-tunnel designed in quadrature axis forms distinctive anti-
Salient pole nature, greatly improved the anti-demagnetization characteristic of motor, while ensure that motor has higher efficiency, and not weaken it
Mechanical strength.Due to using permanent magnet direct-driven type of drive, reductor unit is eliminated, direct drive load simplifies system
Part is driven, and permanent magnet direct driving motor improves system power factor, reduces excitation loss, overall efficiency is carried
Rise.Simultaneously because system element is less, maintenance reduction, reliability is increased.
Embodiment 2：Referring to Fig. 2, a kind of improvement of the present utility model, wherein the even number magnetic in permanent magnet mounting groove are used as
Pole, the isosceles trapezoid per pole permanent magnet into lower open-ended is arranged, and has the wind-tunnel i.e. air magnetic barrier 28 of isosceles trapezoid between every pole；
The wind-tunnel of the isosceles trapezoid is symmetrically distributed on the quadrature axis axis of rotor rotating coordinate system, and isosceles trapezoid is close to the side of rotating shaft
It is upper bottom, is bottom close to the side of stator, and bottom and air gap not UNICOM.Such a design is on the basis of it ensure that ventilation
It ensure that the rigidity of structure of rotor.Remaining structure and advantage are identical with embodiment 1.
Embodiment 3：Referring to Fig. 2, as a kind of improvement of the present utility model, the height of the air magnetic barrier 28 is more than permanent magnetism
The width of body mounting groove 26, and air magnetic barrier 28 upper bottom without departing from permanent magnet mounting groove.Remaining structure and advantage and embodiment 1
It is identical.
Embodiment 4：Referring to Fig. 2, as it is of the present utility model it is a kind of improve, the stator core be punching be overrided to form or
Castable；Rotor core is that silicon steel punching is overrided to form or castable.Remaining structure and advantage and the complete phase of embodiment 1
Together.
Embodiment 5：Referring to Fig. 1, Fig. 3, as it is of the present utility model it is a kind of improve, the frequency converter include power section and
Control section, wherein power section include wire inlet unit 31, uncontrollable rectifier unit 32, DC filter capacitor unit 33, inversion list
Member 34 and the noninductive bus unit 35 of power；The control section includes motor vector control unit and sensor unit 36, its
Middle three-phase inlet wire alternating current, turns into direct current after not controlling DC circuit 32, turns into after electric capacity, inverter circuit become after filtering
The exchange electric drive motor of buckling frequency, motor vector control unit is formed by collection voltages current signal, by analysis computing
The control wave to provisioning request is met, the IGBT of inversion unit is driven, final output meets desired speed and torque.Its
Remaining structure and advantage are identical with embodiment 1.
Embodiment 6：Referring to 3, as a kind of improvement of the present utility model, transducer power part uses hierarchical layout, bottom
Layer is heat dissipating layer, and the second layer is power device layer, and third layer is auxiliary device layer.The uncontrollable rectifier unit 32 uses rectification two
Pole pipe series system constitutes three-phase uncontrollable rectifier bridge, to meet the pressure-resistant demand of high pressure incoming power.Remaining structure and advantage with
Embodiment 1 is identical.
Embodiment 7：Referring to Fig. 3, as a kind of improvement of the present utility model, power section is whole by framework formation one
Body, convenient to install and safeguard, power device IGBT and commutation diode are positioned over the top of copper base 37, and copper base 37 is positioned over water
Above cold pipeline, temperature sensor is placed on copper base.Control unit is by signal processing unit, control CPU element, pulse-triggered
Unit, constructing communication network control unit, human-computer dialogue unit composition.The sensor unit is adopted by current acquisition sensor, voltage
Collect sensor, temperature acquisition sensor group into；Lower leaf is placed on inversion unit and DC filter capacitor unit, and inversion unit is adopted
With IGBT as power device, electric capacity uses thin-film capacitor, and inversion unit major loop uses NPC three-level structures, inversion unit
IGBT and electric capacity are attached using noninductive laminated bus.In the technical scheme, 12 are uniformly distributed on copper base 37
IGBT, six diode power modules, exchange laminated bus with installation on IGBT in diode, are fixed in power device
28 electrochemical capacitors are installed in DC filter capacitor capacitor cell 33, a set of inside of DC filter capacitor capacitor cell 33,
Direct current laminated bus is installed on electrochemical capacitor, because electric capacity is fixed on above power device, space availability ratio is improved, structure is more
Step up to gather, effectively reduce the volume of flame-proof type permanent-magnetic frequency conversion all-in-one inverter section, substantially solved existing frequency conversion body
The problem of product takes up space greatly；What it is due to selection is common electrochemical capacitor, lower from the cost of blade inserting electric capacity than in the market,
Properties of product are more stablized, and are plugged because blade inserting electric capacity is used for a long time, and the vibrations for adding motor easily cause inserted sheet abrasion,
Loose contact influences properties of product, and the technical program selects general electrochemical capacitor, and electrical connection is that mechanical clearance is connected,
Stability is stronger, compacter in structure, saves space, reduces the volume of whole frequency converter；Performance is more stablized, antidetonation
Property preferably, cost is lower；And the more fast and easy of structure design from top to bottom is safeguarded and installed.Remaining structure and advantage and implementation
Example 1 is identical.
Embodiment 8：Referring to Fig. 4-1,4-2,4-3, as a kind of improvement of the present utility model, water cooling pipeline includes motor master
Body pipeline 41, frequency converter cooled plate pipeline 42 and motor front and rear cover pipeline 43, three kinds of pipelines use cascade on the whole,
Local use is connected in parallel form, and motor body pipeline is radiated using spiral channel structure to stator winding, frequency converter
Cooled plate pipeline uses connection in series-parallel Hybrid connections, and power device is radiated using Zigzag type groove profile water channel, motor front and back end
Lid pipeline water channel uses cast water channel, and front and back bearings are radiated.Remaining structure and advantage are identical with embodiment 1.
The utility model can also be by least one in technical characteristic described in embodiment 2,3,4,5,6,7,8 and embodiment
1 combination forms new embodiment.
It should be noted that above-described embodiment, not for limiting protection domain of the present utility model, in above-mentioned technical side
Made equivalents or replacement each fall within the utility model scope of the claimed protection on the basis of case.
Claims (9)
1. a kind of box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors, it is characterised in that the drive system bag
Include and arranged above and below permanent magnet direct driving motor, frequency converter, explosion-resistant enclosure and water cooling pipeline composition, the frequency converter, motor, water cooling tube
Road is scattered in explosion-resistant enclosure, and water route is integrally connected in series, and inverter section includes power section and control section；The frequency conversion
Device includes power section and control section, and wherein power section includes wire inlet unit, uncontrollable rectifier unit, DC filter capacitor list
Member, inversion unit and the noninductive bus unit of power；The control section includes motor vector control unit and sensor unit,
Wherein three-phase inlet wire alternating current, turns into direct current after not controlling DC circuit, turns into after electric capacity, inverter circuit become after filtering
The exchange electric drive motor of buckling frequency, motor vector control unit is formed by collection voltages current signal, by analysis computing
The control wave to provisioning request is met, the IGBT of inversion unit is driven, final output meets desired speed and torque.
2. the box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors according to claim 1, it is characterised in that
The permanent magnet direct driving motor includes rotating shaft, rotor core, ferrite permanent magnet, stator winding, stator core successively from inside to outside
And outer casing base, the rotor core passes through rotating shaft in the form of punching is laminated, is uniform-distribution with permanent magnet in rotor core
Mounting groove, the ferrite permanent magnet, which is bonded in permanent magnet mounting groove, forms even number of poles, and stator winding is enamel insulated wire
It is made and is uniformly embedded into stator slot, the stator core is fixed on motor housing, the stator core and rotor core
Between be provided with air gap, the stator core and be uniformly distributed multiple stator slots 2, be equipped with each stator slot stator around
Group, stator winding is that enamel-covered wire coiling is formed.
3. the box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors according to claim 2, it is characterised in that
Even number of poles wherein in permanent magnet mounting groove, the isosceles trapezoid per pole permanent magnet into lower open-ended is arranged, and between every pole
The wind-tunnel i.e. air magnetic for having isosceles trapezoid hinders.
4. the box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors according to claim 3, it is characterised in that
The wind-tunnel of the isosceles trapezoid is symmetrically distributed on the quadrature axis axis of rotor rotating coordinate system, and isosceles trapezoid is close to the side of rotating shaft
It is upper bottom, is bottom close to the side of stator, and bottom and air gap not UNICOM.
5. the box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors according to claim 4, it is characterised in that
The height of the air magnetic barrier is more than the width of permanent magnet mounting groove, and the upper bottom that air magnetic hinders is without departing from permanent magnet mounting groove.
6. the box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors according to claim 4 or 5, its feature exists
In the stator core is that punching is overrided to form or castable；Rotor core is that silicon steel punching is overrided to form or poured into
Shape.
7. the box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors according to claim 6, it is characterised in that
The uncontrollable rectifier unit constitutes three-phase uncontrollable rectifier bridge using commutation diode series system, to meet high pressure incoming power
Pressure-resistant demand.
8. the box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors according to claim 7, it is characterised in that
The sensor unit by current acquisition sensor, voltage acquisition sensor, temperature acquisition sensor group into；Inversion unit and straight
Flow lower leaf on filter capacitor unit to place, inversion unit is using IGBT as power device, and electric capacity uses thin-film capacitor, inversion
Unit major loop uses NPC three-level structures, and inversion unit IGBT and electric capacity are attached using noninductive laminated bus.
9. the box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors according to claim 1, it is characterised in that
Water cooling pipeline includes motor body pipeline, frequency converter cooled plate pipeline and motor front and rear cover pipeline, and three kinds of pipelines are on the whole
Using cascade, local using form is connected in parallel, motor body pipeline is entered using spiral channel structure to stator winding
Row radiating, frequency converter cooled plate pipeline is used connection in series-parallel Hybrid connections, power device is dissipated using Zigzag type groove profile water channel
Heat, motor front and rear cover pipeline water channel uses cast water channel, and front and back bearings are radiated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720085909.0U CN206559200U (en) | 2017-01-23 | 2017-01-23 | The box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720085909.0U CN206559200U (en) | 2017-01-23 | 2017-01-23 | The box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors |
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| CN206559200U true CN206559200U (en) | 2017-10-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849524A (en) * | 2017-01-23 | 2017-06-13 | 徐州中矿大传动与自动化有限公司 | The box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors |
| CN112034278A (en) * | 2020-07-21 | 2020-12-04 | 山东科技大学 | Electromagnetic signal test platform for variable-frequency speed-regulating all-in-one machine |
| WO2022016692A1 (en) * | 2020-07-21 | 2022-01-27 | 山东科技大学 | Variable-frequency speed regulation all-in-one machine for coal mine |
-
2017
- 2017-01-23 CN CN201720085909.0U patent/CN206559200U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849524A (en) * | 2017-01-23 | 2017-06-13 | 徐州中矿大传动与自动化有限公司 | The box-like drive system of permanent magnet direct-driven explosion-proof variable frequency variable speed group of motors |
| CN112034278A (en) * | 2020-07-21 | 2020-12-04 | 山东科技大学 | Electromagnetic signal test platform for variable-frequency speed-regulating all-in-one machine |
| WO2022016692A1 (en) * | 2020-07-21 | 2022-01-27 | 山东科技大学 | Variable-frequency speed regulation all-in-one machine for coal mine |
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Address after: 221116 No. second Zhujianglu Road Industrial Park, Xuzhou high tech Zone, Jiangsu 7 Patentee after: Jiangsu Guochuan Electric Co.,Ltd. Address before: 221116 No. second Zhujianglu Road Industrial Park, Xuzhou high tech Zone, Jiangsu 7 Patentee before: CHINA MINING DRIVES & AUTOMATION Co.,Ltd. |