CN114024396A - Water-cooled variable frequency driving device based on integrated design - Google Patents
Water-cooled variable frequency driving device based on integrated design Download PDFInfo
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- CN114024396A CN114024396A CN202111440958.9A CN202111440958A CN114024396A CN 114024396 A CN114024396 A CN 114024396A CN 202111440958 A CN202111440958 A CN 202111440958A CN 114024396 A CN114024396 A CN 114024396A
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- 238000013461 design Methods 0.000 title claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 40
- 230000017525 heat dissipation Effects 0.000 claims abstract description 25
- 238000004804 winding Methods 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 230000008054 signal transmission Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 230000007659 motor function Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Cooling System (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a water-cooled variable frequency driving device based on integrated design, which comprises a water-cooled variable frequency motor, wherein the water-cooled variable frequency motor is an integrated shell, a junction box is arranged at the upper end of the integrated shell, a signal interface is arranged on the outer side of the junction box, and the rear end part of the integrated shell is provided with a power interface; the circuit part for electromechanical conversion of the variable-frequency driving device comprises a starting unit, a power conversion unit, a stator winding and a user signal interface. The invention leads the heat dissipation of the power unit and the heat dissipation of the motor stator to share one heat dissipation platform by the way of internally arranging the power unit, thus leading the reliability of the whole machine on the heat dissipation structure to be higher and having the characteristic of high power density. Meanwhile, the frequency conversion driving device is designed in a modularized mode, so that the power unit and the electromechanical conversion unit of the motor are highly integrated, a closed thermal and electromagnetic space is provided, the frequency conversion driving device is more suitable for application in related fields with certain requirements on space and reliability, and the applicability of the structure is improved.
Description
Technical Field
The invention relates to the technical field of variable frequency driving, in particular to a water-cooled variable frequency driving device based on integrated design.
Background
At present, along with the development of ship equipment, more and more electronic products and more compact structure are provided, the requirements on indexes such as vibration, speed regulation, space size and the like of rotating equipment are improved, an optimal matching design idea of integrating a variable frequency driving device and a motor is provided, the problem of low vibration and low noise of the motor is solved through systematic electromagnetic compatibility optimization design and frequency converter control algorithm research, and mutual interference among the equipment is avoided.
The variable frequency driving device and the motor are integrally designed, so that the length of a power cable between the driving device and the motor is shortened to the maximum extent, and the variable frequency driving device suitable for the low-vibration noise motor is matched with the electromagnetic performance of the motor. In addition, the frequency conversion driving device and the motor share the cooling system, and the cooling system has the advantages of space saving, flexible operation and simple external interface.
However, the existing backpack type and split type integrated frequency conversion device is only simple physical superposition of the frequency converter and the motor, namely the frequency converter and the motor are independent and separately designed and are only connected with installation and wiring. The problems of low space utilization rate and low reliability caused by the fact that heat dissipation structures are separately considered generally exist.
Disclosure of Invention
The invention aims to provide a water-cooled variable frequency driving device based on integrated design, which can improve the heat dissipation efficiency and has high reliability.
The technical scheme adopted by the invention is as follows:
a water-cooled variable frequency driving device based on an integrated design comprises a water-cooled variable frequency motor, wherein the water-cooled variable frequency motor is an integrated shell, a junction box is arranged at the upper end of the integrated shell, a signal interface is arranged on the outer side of the junction box, and the rear end part of the integrated shell is provided with a power interface; the signal interface is responsible for interaction with a user, and the power interface at the rear end of the integrated shell is used as an inlet of electric energy of the driving device;
the starting unit is fixed on the inner wall of the integrated shell through a structural part and is responsible for the access of strong electricity of a motor interface, and the starting unit sends the converted electric quantity to each power conversion unit in a copper bar mode; the power conversion unit is fixed on the inner wall of the integrated shell in an equal division mode through a heat conduction structural member, the power conversion unit is connected with the starting unit through a copper bar, each power conversion unit is connected with a corresponding winding, and the motor stator is arranged inside the integrated heat dissipation shell.
The junction box is internally provided with a power supply, a signal conversion board and a control board, and a signal interface is electrically connected with the control board through the signal conversion board.
The power supply, the signal conversion board and the control board are installed in the same plane.
And the bottom of the junction box is provided with an opening for forming a signal transmission path with the motor stator winding after the cable passes through the opening.
Annular grooves are axially formed in the inner wall of the integrated shell, and the water cooling loop is arranged along the grooves.
The copper flat cable is annular and is closely attached to the integrated inner shell for insulation.
The invention leads the heat dissipation of the power unit and the heat dissipation of the motor stator to share one heat dissipation platform by the way of internally arranging the power unit, thus leading the reliability of the whole machine on the heat dissipation structure to be higher and having the characteristic of high power density. Meanwhile, a power electronic and circuit design method is combined, the frequency conversion driving device is subjected to modular design, so that the power unit and the motor electromechanical conversion unit are highly integrated, a closed thermal and electromagnetic space is provided, the frequency conversion driving device is more suitable for application in related fields with certain requirements on space and reliability, and the applicability of the structure is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic top view of the present invention;
fig. 2 is a side view of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1 and 2, the water-cooled variable frequency motor comprises a water-cooled variable frequency motor, wherein the water-cooled variable frequency motor is an integrated shell, a junction box 7 is arranged at the upper end of the integrated shell, a signal interface is arranged on the outer side of the junction box 7, and the rear end part of the integrated shell is provided with a power interface; the signal interface is responsible for interaction with users, the power interface at the rear end of the integrated shell is used as an inlet of the electric energy of the driving device, namely a power supply interface, and the circuit part for electromechanical conversion of the variable-frequency driving device comprises a starting unit, a power conversion unit, a stator winding and a user signal interface.
The starting unit is fixed on the inner wall of the integrated shell through a structural part, the starting unit 10 is responsible for the access of strong electricity of a motor interface, and the starting unit 10 sends the converted electric quantity to each power conversion unit 11 in a copper bar 9 mode; the power conversion units 11 are fixed on the inner wall of the integrated shell in an equipartition mode through a heat conduction structural member, the power conversion units 11 are connected with the starting unit through copper bars, and each power conversion unit 11 is connected with the corresponding winding through a connecting terminal 8; the motor stator is arranged in the integrated heat dissipation shell.
A power supply and signal conversion board 3 and a control board 2 are arranged in the junction box, a signal interface 1 is electrically connected with the control board through the signal conversion board,
the power supply and signal conversion board 3 and the control board 2 are installed in the same plane, and through the arrangement, the flat layout can be firstly realized, and the height space is reduced; secondly, the flatly-laid installation has strong anti-vibration capability, and the problems of strength, vibration and looseness of the interlayer support caused by double-layer installation are thoroughly avoided; no cable or signal cross exists between the control panel 2 and the power supply and signal conversion panel 3, and the control panel and the power supply are strictly separated; the whole body is convenient to debug, test and maintain.
And the bottom of the junction box is provided with an opening for forming a signal transmission path with the motor stator winding after the cable passes through the opening.
An annular groove is formed in the inner wall of the integrated shell, and the water cooling loop is arranged in the groove.
The copper bar 9 is annular and is closely attached to the integrated inner shell for insulation.
The bottom of the integrated shell is also provided with a bracket 12 for horizontally placing the integrated shell.
The variable frequency drive control realizes physical high dispersion and realizes complete separation of control and power.
The control and power signals are transmitted through optical signals, and weak coupling of the control signals is achieved. Particularly, the control panel, the power supply and signal conversion board and the signal wiring inside the motor body in the junction box can be transmitted by photoelectric signals, so that the reliability of signal transmission is improved.
The power devices of the starting unit and the power conversion unit and the motor stator winding share one shell to form an integrated fixing and heat-conducting shell.
And the power device, the winding and other thermal devices are jointly arranged on the integrated shell, and the integrated shell is provided with the axial ring-type heat dissipation channel and the fresh water cooling medium.
The power device and the stator winding share an integrated shell and a variable frequency driving device which jointly adopts a water-cooling heat dissipation mode.
The invention designs a shell body which is shared by the power devices of the starting unit and the power conversion unit and the stator winding of the motor by considering that the power devices, the winding and other thermal devices are arranged on the integrated shell body, the axial ring-type heat dissipation channel of the integrated shell body and the fresh water cooling medium, so as to form the integrated fixing and heat conduction shell body, thereby realizing the following steps:
the variable frequency drive control realizes physical high dispersion and realizes complete separation of control and power. The power part and the electromechanical conversion unit of the motor body are highly integrated, and a closed electromagnetic space is realized. The whole power structure is more compact, and the safety is high.
Furthermore, the control board, the power supply and the signal conversion board belong to weak current parts, are independent of a strong current area, have low energy and are simple in structure and heat dissipation design. The control and power signals are transmitted through optical signals, and weak coupling of the control signals is achieved. Particularly, signal connection wires in a control panel, a power supply and signal conversion board and a motor body in the junction box can be transmitted by analog and digital optical fiber components, and the reliability of signal transmission is improved.
The invention has obvious space utilization advantage, and the built-in power unit greatly reduces the external structural size, saves certain space in the aspect of use and installation and is more convenient to install.
The invention has obvious heat dissipation utilization advantages, and the heat dissipation design is simpler because the integrated shell is adopted and the power device and the stator winding share the heat dissipation mechanism system.
The structure of the invention divides the function of the variable frequency driving unit from the perspective of the integration of the power unit and the power device and the stator winding, and embeds the power unit in the integrated shell from the perspective of heat dissipation, thus really realizing the design concept of an integrated structure. The use of the photoelectric signal ensures the reliability of signal transmission, thereby ensuring the practicability of the structure. The invention has novel and simple structure, high heat dissipation efficiency, excellent space utilization and flexible installation mode, and not only improves the system efficiency but also fully exerts the superiority of the mixed control of the characteristics of power electronics and the motor body by arranging the power unit in the motor shell, adopting a water-cooling heat dissipation system shared by a power device with power loss heat dissipation requirement and a stator winding and reasonably arranging a common cooling water system. Can be widely applied to various fields of military industry, coal, chemical industry, electric vehicles, fire safety and the like.
The invention has the following structural design concept: a water-cooling component is adopted, and a motor winding, a rectifying device and an inverter device are distributed on the water-cooling component; functionally, the speed regulation and the driving are integrated; although the frequency converter and the motor function are provided, the frequency converter and the motor function cannot be singly called as a motor or a frequency converter; the power part and the control part are completely isolated, all power parts such as a rectifying device, an inverter, a motor stator winding, a power wiring terminal and the like are arranged in the water-cooling shell, and heat dissipation design consideration is uniformly carried out; the connection box is internally provided with no power and strong electric devices, and the control panel and the water-cooling shell in the connection box are connected through optical fibers to carry out power driving.
In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.
It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the application of the principles of the technology. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the specific embodiments described herein, and may include more effective embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (6)
1. The utility model provides a water-cooled variable frequency drive device, water-cooled inverter motor based on integrated design which characterized in that: the water-cooling variable frequency motor is an integrated shell, the junction box is arranged at the upper end of the integrated shell, a signal interface is arranged on the outer side of the junction box, and a power interface is arranged at the rear end part of the integrated shell; the signal interface is responsible for interaction with a user, and the power interface at the rear end of the integrated shell is used as an inlet of electric energy of the driving device;
the starting unit is fixed on the inner wall of the integrated shell through a structural part and is responsible for the access of strong electricity of a motor interface, and the starting unit sends the converted electric quantity to each power conversion unit in a copper bar mode; the power conversion unit is fixed on the inner wall of the integrated shell in an equal division mode through a heat conduction structural member, the power conversion unit is connected with the starting unit through a copper bar, each power conversion unit is connected with a corresponding winding, and the motor stator is arranged inside the integrated heat dissipation shell.
2. The water-cooled variable frequency drive device based on integrated design according to claim 1, characterized in that: the junction box is internally provided with a power supply, a signal conversion board and a control board, and a signal interface is electrically connected with the control board through the signal conversion board.
3. The water-cooled variable frequency drive device based on integrated design according to claim 2, characterized in that: the power supply, the signal conversion board and the control board are installed in the same plane.
4. The water-cooled variable frequency drive device based on integrated design according to claim 1, characterized in that: and the bottom of the junction box is provided with an opening for forming a signal transmission path with the motor stator winding after the cable passes through the opening.
5. The water-cooled variable frequency drive device based on integrated design according to claim 1, characterized in that: an annular groove is axially formed in the inner wall of the integrated shell, and the water cooling loop is arranged along the groove.
6. The water-cooled variable frequency drive device based on integrated design according to any one of claims 1-5, characterized in that: the copper flat cable is annular and is closely attached to the integrated inner shell for insulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111440958.9A CN114024396A (en) | 2021-11-30 | 2021-11-30 | Water-cooled variable frequency driving device based on integrated design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111440958.9A CN114024396A (en) | 2021-11-30 | 2021-11-30 | Water-cooled variable frequency driving device based on integrated design |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114024396A true CN114024396A (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111440958.9A Pending CN114024396A (en) | 2021-11-30 | 2021-11-30 | Water-cooled variable frequency driving device based on integrated design |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009014961A1 (en) * | 2009-03-30 | 2010-10-07 | Sew-Eurodrive Gmbh & Co. Kg | Electric machine e.g. synchronous machine, has connection box whose one connection box cover surrounds space area of signal electronics, and another connection box cover partly surrounds space area of power electronics at housing |
| CN109639157A (en) * | 2018-12-18 | 2019-04-16 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | A kind of water cooling electric power conversion apparatus peculiar to vessel |
| CN213585495U (en) * | 2020-11-27 | 2021-06-29 | 卧龙电气南阳防爆集团股份有限公司 | Built-in frequency conversion all-in-one of power unit |
-
2021
- 2021-11-30 CN CN202111440958.9A patent/CN114024396A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009014961A1 (en) * | 2009-03-30 | 2010-10-07 | Sew-Eurodrive Gmbh & Co. Kg | Electric machine e.g. synchronous machine, has connection box whose one connection box cover surrounds space area of signal electronics, and another connection box cover partly surrounds space area of power electronics at housing |
| CN109639157A (en) * | 2018-12-18 | 2019-04-16 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | A kind of water cooling electric power conversion apparatus peculiar to vessel |
| CN213585495U (en) * | 2020-11-27 | 2021-06-29 | 卧龙电气南阳防爆集团股份有限公司 | Built-in frequency conversion all-in-one of power unit |
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