CN110086267B - Permanent magnet motor stator device for marine pod type propeller - Google Patents
Permanent magnet motor stator device for marine pod type propeller Download PDFInfo
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- CN110086267B CN110086267B CN201910328997.6A CN201910328997A CN110086267B CN 110086267 B CN110086267 B CN 110086267B CN 201910328997 A CN201910328997 A CN 201910328997A CN 110086267 B CN110086267 B CN 110086267B
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- permanent magnet
- magnet motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A permanent magnet motor stator device for a marine pod type propeller comprises a stator base and a stator core in the stator base, wherein the stator core is divided into a plurality of sections along the length direction, the diameter of each section is larger than that of the front section and smaller than that of the rear section, and the sections are connected to form a stepped structure; the stator base be the dysmorphism structure, be in the casing of stator base with the cascaded structure assorted ladder structure of stator core, stator core interference connects in the stator base. The permanent magnet motor stator device is respectively arranged in the stator base in a shrink fit manner in the stepped structure of the stator core in a multi-section length range, so that the comprehensive interference design requirement after integral superposition can be ensured, the requirement of effective installation in different length ranges can be met, the problem of interference installation of the permanent magnet motor stator with a large length-diameter ratio and a shell is effectively solved, and meanwhile, the reasonable winding outgoing line wiring manner on the premise of sealing is also ensured.
Description
Technical Field
The invention relates to the field of marine propellers, in particular to a permanent magnet motor stator device for a marine pod type propeller.
Background
The ship propeller is an important part in ship power equipment, and with the technical breakthrough of the permanent magnet motor, the pod type propeller is widely applied to diving operation supply ships, oil drilling platforms, supply ships, shuttle tankers, ro-ro ships, icebreakers and part of military ships, wherein the permanent magnet type electric pod propeller has the advantages of high efficiency, low temperature rise, low vibration and the like, so the permanent magnet type electric pod propeller is widely applied to the ships. At present, hydrodynamic performance, particularly propeller efficiency, is generally considered in a design stage of a pod propeller for a ship, so that the length-diameter ratio of a permanent magnet motor base for the pod propeller is particularly critical, and the large length-diameter ratio can improve the propeller efficiency and enhance the hydrodynamic performance. However, the large length-diameter ratio of the pod propeller causes the interference length between the stator and the stator base to be longer, the stator is clamped in the shell due to the contact with the shell heat conduction cooling difference in the shrink-fit process, the existing assembly and manufacturing problems in the motor industry are caused, and the large length-diameter ratio is difficult to maintain certain air pressure in the pod propeller and guarantee the sealing performance in the pod propeller.
Disclosure of Invention
The invention aims to overcome the defects, and provides a permanent magnet motor stator device for a marine pod type propeller, which fully considers the connection between a stator core and a stator base of the permanent magnet motor for the lower pod type propeller with a large length-diameter ratio, the fixation of the wire outlet mode of an internal winding and the design of the internal part structure of the pod type propeller. This permanent-magnet machine stator device's stator core adopts the cascaded setting of segmentation, the stair structure phase-match of the stator base inner shell that sets up with the dysmorphism, the respective shrink fit interference installation of the cascaded structure of stator core in multistage length range, easily assembly, can guarantee the comprehensive magnitude of interference design requirement after whole stack, can satisfy again and effectively install at different length ranges, not only efficient, the winding of still being convenient for is qualified for the next round of competitions the wiring, can inside pressurize, and effectively solve big length-diameter ratio permanent-magnet machine stator and casing interference installation problem moreover, the reasonable winding wiring mode of being qualified for the next round of competitions under the sealed prerequisite has still been guaranteed to the while. The permanent magnet motor stator device has the characteristics of large length-diameter ratio, good magnetic conductivity, low loss, good rigidity, low vibration and the like, is suitable for being used for permanent magnet electric pod type propellers below 7.5MW level, can be suitable for the installation of various special-shaped bases, is convenient for winding outgoing lines in complex environments, has extremely high application value, and has wide matching range of ship propellers.
The technical scheme of the invention is as follows:
the invention provides a permanent magnet motor stator device for a marine pod type propeller, which is characterized by comprising a stator base and a stator core in the stator base, wherein the stator core is divided into a plurality of sections along the length direction, the diameter of each section is larger than that of the front section and smaller than that of the rear section, and the sections are connected to form a stepped structure; the stator base be the dysmorphism structure, be in the casing of stator base with the cascaded structure assorted ladder structure of stator core, stator core interference connects in the stator base.
Further, the stator base in set up two with stator core assorted iron core tip fixed plates, stator core fix between two iron core tip fixed plates, be connected with stator base interference.
Furthermore, the stator core is fixed on the fixing plate at the end part of the core in a welding mode.
Furthermore, the stator core is divided into a plurality of sections which are not equally divided according to the step structure in the stator base shell.
Further, the diameter of each section of the stator core with the stepped structure formed by connecting a plurality of sections is 100.22% -100.37% of the diameter of the previous section.
Further, the length of the stator core is 2250mm-2319 mm.
Furthermore, a winding and three winding outgoing line connecting rings are also arranged in the stator base, and three winding external wiring copper rings are arranged outside the stator base and are in three-phase arrangement; the winding is fixed in the stator iron core, the wire outlet ends of the winding are respectively fixed on the corresponding winding wire outlet connecting rings, and one end of each winding wire outlet connecting ring is respectively connected with the corresponding winding external wiring copper ring.
Furthermore, the outlet end of the winding is fixed on the winding outlet connecting ring in a welding mode.
Furthermore, one end of the winding outlet connecting ring is connected with the winding external wiring copper ring through a bolt.
Furthermore, the permanent magnet motor stator device is of a multi-stage and multi-slot structure. The inner part of the motor is connected in a star shape, so that the copper ring can be conveniently arranged.
Furthermore, the segmented stator core is in a silicon steel sheet punching sheet form according to the design of an electromagnetic scheme and the structural arrangement in the stator base, is obtained by designing a unique die and performing split lamination, and the inner diameter and the groove size of the laminated stator core meet the design precision requirement.
The invention has the beneficial effects that:
(1) the stator core of the permanent magnet motor stator device is of a stepped structure formed by a plurality of sections, and the stepped structure is beneficial to convenient installation in a special-shaped stator base. The installation process of the conventional installation and heating of the common cylinder can only install very limited effective stroke and cannot meet the installation requirement of a longer stator, so that the permanent magnet motor with a large length-diameter ratio is simply distributed into a short and thick type by adopting the sectional stepped arrangement, and the hot installation between a stator base and a stator iron core is facilitated.
(2) The stator base of the permanent magnet motor stator device is of a special-shaped structure, is beneficial to overall sealing, and has better hydrodynamic performance.
(3) The stator core is of a segmented stepped structure, the shell of the stator base of the special-shaped structure is also of a stepped structure and is matched with the stepped structure of the stator core, the stepped structures of the stator core are respectively installed in a shrink fit interference mode in a multi-segment length range, assembly is easy, the comprehensive interference design requirement after integral superposition can be guaranteed, effective installation in different length ranges can be met, efficiency is high, winding outgoing line wiring is facilitated, internal pressure maintaining can be achieved, and the problem of interference installation of the permanent magnet motor stator with a large length-diameter ratio and the shell is effectively solved.
(4) The permanent magnet motor stator device has the characteristics of large length-diameter ratio, good magnetic conductivity, low loss, good rigidity, low vibration and the like, is suitable for being used for permanent magnet electric pod type propellers below 7.5MW level, can be suitable for the installation of various special-shaped bases, is convenient for winding outgoing lines in complex environments, has extremely high application value, and has wide matching range of ship propellers.
(5) The winding outlet end in the permanent magnet motor stator is firstly connected to the winding outlet connecting ring and then further connected to the winding external wiring copper ring, so that the arrangement of a power cable in a narrow space is facilitated.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 shows a schematic cross-sectional structure of the present invention.
Fig. 2 shows a structure of a stator core having a stepped structure according to the present invention.
In the figure, the stator comprises a stator base 1, a stator core 2, a stator core 3, a core end fixing plate 4, a winding 5, a winding outgoing line connecting ring 6 and a winding external wiring copper ring.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein.
Example 1
As in fig. 1, fig. 2, a marine permanent magnet motor stator device for pod propeller, stator core 2 in stator base 1 and stator base 1, stator core 2 divide into a plurality of sections along length direction, every section diameter is greater than preceding one section, is less than back one section, a plurality of sections are connected and are constituted cascaded structure, stator base 1 be special-shaped structure, be in the casing of stator base 1 with stator core 2 cascaded structure assorted stepped structure, stator core 2, interference connection is in stator base 1.
Further, the stator core 2 is divided into a plurality of unequal sections according to the stepped structure in the housing of the stator base 1.
For example, the stator core 2 is divided into several sections with different diameters of phi 1340, phi 1344, phi 1348, phi 1352, etc., and the several sections are connected in sequence to form a stepped structure, and the stator core 2 with the stepped structure is connected in the stator base 1 in an interference manner. The sectional stepped structure of the stator core 2 enables the permanent magnet motor with large length-diameter ratio to be simply distributed into a short and thick type, and hot assembly between the stator base 1 and the stator core 2 is facilitated.
Further, stator base 1 in set up two with 2 assorted iron core tip fixed plates 3 of stator core, stator core 2 fix between iron core tip fixed plate 3, with 1 interference coupling of stator base.
Furthermore, two ends of the stator core 2 are fixed on the core end fixing plate 3 in a welding mode.
Further, the diameter of each section of the stator core 2 with the stepped structure formed by connecting a plurality of sections is 100.22% -100.37% of the diameter of the previous section.
Further, the length of the stator core 2 is 2250mm to 2319 mm.
Furthermore, a winding 4 and three winding outgoing line connecting rings 5 are also arranged in the stator base 1, and three winding external wiring copper rings 6 are arranged outside the stator base 1 and are in three-phase arrangement; the winding 4 is wound to the inner side of the stator core 2 through a centralized forming winding machine, the wire outlet end of the winding 4 is fixed on the winding wire outlet connecting ring 5, and one end of the winding wire outlet connecting ring 5 is connected with the winding external wiring copper ring 6.
Furthermore, the outlet end of the winding 4 is fixed on the winding outlet connecting ring 5 in a welding manner.
Furthermore, one end of the winding outgoing line connecting ring 5 is connected with the winding external wiring copper ring 6 through a bolt.
Furthermore, the permanent magnet motor adopts a multi-stage and multi-groove mode, so that the interior of the motor is connected in a star shape, and copper rings are conveniently arranged.
Furthermore, the stator core is in a silicon steel sheet punching sheet form and is obtained by laminating, and the inner diameter and the groove size of the laminated stator core meet the design precision requirement.
Example 2
The invention relates to a permanent magnet motor stator device for a marine pod type propeller, which comprises the following steps:
the stator core 2 is divided into a plurality of sections, the sections are connected in sequence with the diameters of phi 1352, phi 1348, phi 1344, phi 1340 and the like to form a stepped structure, each step of the stepped structure of the stator core 2 with the stepped structure is respectively shrink-fitted on the stepped structure in the shell of the stator base 1 in an interference manner, and the problem that the stator of the motor is clamped in the shell due to the contact with the heat conduction cooling difference of the shell in the shrink-fitting process of the stator is avoided. The connecting mode enables the permanent magnet motor with the large length-diameter ratio to be simply distributed into a short and thick type, hot installation between the stator base 1 and the stator core 2 is facilitated, the comprehensive interference design requirement after integral superposition can be guaranteed, effective installation in different length ranges can be met, meanwhile, two ends of the stator core 2 are fixed on the core end fixing plate 3 in a welding mode and further fixed in the stator base 1, and the problems of assembly and manufacturing between the stator core 2 and the stator base 1 of the permanent magnet motor for the pod propeller with the large length-diameter ratio are solved.
The winding 4 is wound to the inner side of the stator core 2 through a centralized forming winding machine, the outgoing line mode of the winding 4 is a three-phase outgoing line, the outgoing line ends of the winding 4 are respectively fixed on the three corresponding winding outgoing line connecting rings 5, one ends of the three winding outgoing line connecting rings 5 are connected with the three corresponding winding external wiring copper rings 6 which are arranged in three phases, and therefore internal winding outgoing lines of the permanent magnet motor for the pod propeller under the condition of ensuring the internal tightness are achieved. The copper ring 6 for external connection of the winding is connected to an inverter through a slip ring outside the propeller, and then the permanent magnet motor for the pod propeller with large length-diameter ratio can be used for various ships by combining a rotor in a stator, so that the efficiency of the propeller is improved, and the hydrodynamic performance is enhanced.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (9)
1. The permanent magnet motor stator device for the marine pod type propeller is characterized by having a large length-diameter ratio and comprising a stator base (1) and a stator core (2) in the stator base (1), wherein the stator core (2) is divided into a plurality of sections along the length direction, the diameter of each section is larger than that of the previous section and smaller than that of the next section, and the sections are connected to form a stepped structure; the stator base (1) is of a special-shaped structure, a shell of the stator base (1) is of a stepped structure matched with a stepped structure of the stator core (2), and the stator core (2) is connected in the stator base (1) in an interference mode; the stator core (2) is in a stepped structure formed by connecting a plurality of sections, and the diameter of each section is 100.22-100.37% of that of the previous section; the length of the stator core (2) is 2250mm-2319 mm.
2. The permanent magnet motor stator device for the marine pod type propeller as claimed in claim 1, wherein two core end fixing plates (3) matched with the stator core (2) are arranged in the stator base (1), and the stator core (2) is fixed between the two core end fixing plates (3) and is in interference connection with the stator base (1).
3. The stator arrangement of a permanent magnet motor for a marine pod propeller as set forth in claim 2, wherein the stator core (2) is fixed to the core end fixing plate (3) by welding.
4. The stator arrangement of a permanent magnet motor for a marine pod propeller according to claim 1, wherein the stator core (2) is divided into unequal segments according to a stepped structure in the housing of the stator base (1).
5. The permanent magnet motor stator device for the marine pod type propeller as claimed in claim 1, wherein the stator base (1) is further provided with a winding (4) and three winding outlet connecting rings (5), and the outer side of the stator base (1) is provided with three winding external wiring copper rings (6); the winding (4) is fixed in the stator core (2), the wire outlet ends of the winding (4) are respectively fixed on the corresponding winding wire outlet connecting rings (5), and one end of each winding wire outlet connecting ring (5) is respectively connected with the corresponding winding external wiring copper ring (6).
6. The permanent magnet motor stator device for a marine pod propeller as claimed in claim 5, wherein the outlet end of the winding (4) is fixed on the winding outlet connection ring (5) by welding.
7. The permanent magnet motor stator device for a marine pod propeller as claimed in claim 5, wherein one end of the winding outlet connecting ring (5) is bolted to the winding external wiring copper ring (6).
8. The permanent magnet motor stator device for a marine pod propeller as claimed in claim 1, wherein the permanent magnet motor stator device is a multi-pole, multi-slot structure.
9. The permanent magnet motor stator device for the marine pod-type propeller as claimed in claim 1, wherein the segmented stator core (2) is in the form of a silicon steel sheet stamped piece, and is obtained by split lamination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910328997.6A CN110086267B (en) | 2019-04-23 | 2019-04-23 | Permanent magnet motor stator device for marine pod type propeller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910328997.6A CN110086267B (en) | 2019-04-23 | 2019-04-23 | Permanent magnet motor stator device for marine pod type propeller |
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| CN110086267A CN110086267A (en) | 2019-08-02 |
| CN110086267B true CN110086267B (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910328997.6A Active CN110086267B (en) | 2019-04-23 | 2019-04-23 | Permanent magnet motor stator device for marine pod type propeller |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010161891A (en) * | 2009-01-09 | 2010-07-22 | Nsk Ltd | Rotating electrical machine |
| JP2011259552A (en) * | 2010-06-07 | 2011-12-22 | Nsk Ltd | Brushless motor |
| CN203243127U (en) * | 2013-03-18 | 2013-10-16 | 新誉集团有限公司 | Variable frequency motor stator core structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005143214A (en) * | 2003-11-06 | 2005-06-02 | Matsushita Electric Ind Co Ltd | Motor and its manufacturing method, and compressor using it |
| JP4813404B2 (en) * | 2007-03-07 | 2011-11-09 | 三菱電機株式会社 | Stator and hermetic compressor and rotating machine |
| JP2011152041A (en) * | 2011-03-25 | 2011-08-04 | Mitsubishi Electric Corp | Stator, sealed compressor and rotating machine |
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2019
- 2019-04-23 CN CN201910328997.6A patent/CN110086267B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010161891A (en) * | 2009-01-09 | 2010-07-22 | Nsk Ltd | Rotating electrical machine |
| JP2011259552A (en) * | 2010-06-07 | 2011-12-22 | Nsk Ltd | Brushless motor |
| CN203243127U (en) * | 2013-03-18 | 2013-10-16 | 新誉集团有限公司 | Variable frequency motor stator core structure |
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| CN110086267A (en) | 2019-08-02 |
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