CN2243138Y - Capacity-variable three-phase asynchronous motor - Google Patents
Capacity-variable three-phase asynchronous motor Download PDFInfo
- Publication number
- CN2243138Y CN2243138Y CN 95218746 CN95218746U CN2243138Y CN 2243138 Y CN2243138 Y CN 2243138Y CN 95218746 CN95218746 CN 95218746 CN 95218746 U CN95218746 U CN 95218746U CN 2243138 Y CN2243138 Y CN 2243138Y
- Authority
- CN
- China
- Prior art keywords
- phase
- threephase asynchronous
- stator winding
- winding
- independent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Windings For Motors And Generators (AREA)
Abstract
The utility model relates to a capacity-variable three-phase asynchronous motor whose rated capacity can be changed by gradation. The utility model is characterized in that no matter the stator winding of the three-phase asynchronous motor is in star connection or delta connection, the stator winding is designed into a plurality of mutually independent parts; each part are individually formed into a three-phase symmetrical winding; corresponding outlet terminals are arranged in an outlet box, so that the three-phase asynchronous motor has different rated capacities, when the stator winding is in different connection modes. The utility model mainly solves the problems that the no-load starting current of the three-phase asynchronous motor is large and when in light load the power loss ratio of an iron core is high while efficiency and power factor are low.
Description
The utility model relates to the threephase asynchronous that a kind of its rated capacity can classification changes.
Threephase asynchronous is to use field boundary to close motor the widest, that use platform number is maximum, power consumption is maximum.Traditional threephase asynchronous, simple in structure though it is low to have cost, advantage such as reliable has two tangible inherent defects, and promptly the direct-on-line starting electric current is big, and efficient and power factor are low during underloading.The manufacturing technology method of known up to now threephase asynchronous reaches in the patent of having announced relevant with the threephase asynchronous manufacture method, and not having a kind of is that a concrete threephase asynchronous its rated capacity under the situation that does not change its number of pole-pairs and supply voltage of having made can be changed.Therefore, very little to the improvement of above-mentioned two shortcomings of traditional threephase asynchronous up to now.In order to reduce the direct-on-line starting electric current of traditional threephase asynchronous, need to adopt star---the reduced voltage starting mode of triangle start mode or employing auto-induction voltage-reduced starting device.
The purpose of this utility model is under the prerequisite that does not change existing threephase asynchronous manufacturing process basically, threephase asynchronous is made motor with two or more rated capacities, make a concrete threephase asynchronous under the prerequisite that does not change number of pole-pairs and supply voltage, the mode of connection that only changes stator winding just can change its rated capacity.Threephase asynchronous is started in the low capacity mode when starting, to reduce its direct-on-line starting current value, be in operation, when load is heavy, move in big capacity mode, when load is light, move in the low capacity mode, make threephase asynchronous under different loads, all have higher efficient and power factor, improve the runnability of threephase asynchronous, reach the purpose of saves energy.
Realize that method of the present utility model is: the three-phase stator winding design of threephase asynchronous is arranged to some parts independent of each other, when three-phase stator winding is designed to delta connection, each independent partly between in the inside of threephase asynchronous without any interface; When three-phase stator winding is designed to star connection, each independent partly between in the inside of threephase asynchronous or have only a public interface, perhaps without any interface, and for the threephase asynchronous of any number of pole-pairs, each of above-mentioned three-phase stator winding is independent partly can both to constitute three-phase symmetric winding separately.Each independent three-phase symmetric winding that partly constitutes all provides three supply terminalss that indicate independent partly sequence number and the separate code name of power supply in the terminal box of motor, make when three phase mains inserts the three-phase stator winding of different independent parts, along the current value (being electric loading alleged in the design of electrical motor) of threephase asynchronous stator core circumference unit length and the magnetic flux difference of every utmost point, thereby the rated output of threephase asynchronous is also just different, the independent number partly of the power supply that inserts is many more, and rated output is just big more.In other words, the rated capacity of three-phase stator winding threephase asynchronous when different connection is just different.Thereby the rated capacity of threephase asynchronous can be according to the difference of the connection of three-phase stator winding and classification is variable.
Every threephase asynchronous according to the utility model manufacturing will have two or more rated capacities.Rated capacity secondary, three grades or the variable threephase asynchronous of level Four will have 6 respectively in its outlet box, and 9 or 12 indicate the sequence number of the independent part of three-phase stator winding and the terminals of the separate code name of power supply.Threephase asynchronous is in when starting, can be according to the difference of the requirement of starting torque and power supply capacity one or two or the whole independence parts with three-phase stator winding inserted in the three-phase symmetrical power.Like this, for the bigger threephase asynchronous of capacity, in order to reduce the starting current value, can start by the low capacity mode, promptly three phase mains need only be inserted in the part stator three-phase symmetric winding, after finishing, starting inserts another partly stator three-phase symmetric winding again, thereby no longer need to adopt heavy auto-induction voltage-reduced starting device, with star---the triangle start mode is compared, the varying capacity start mode is convenient flexibly, starting current and starting torque respectively are 1: 3 fixing relation when no longer being reduced voltage starting and direct-on-line starting,---the shortcoming that three-phase stator winding energising---outage---is switched on again under the triangle start mode of also having avoided star.When threephase asynchronous moves, but also the size of apparent load is selected proper rated capacity.When threephase asynchronous when heavy service transfers light running to, by contactor or other electrical equipment part stator three-phase symmetric winding is opened from power interruptions, only keep other stator three-phase symmetric winding energized partly, that is the rated capacity that reduces threephase asynchronous is moved, can improve the load factor of threephase asynchronous like this, thereby improve its power factor and efficient, saves energy.
Accompanying drawing is that four utmost points, rated capacity secondary are variable, the structure expanded view of the threephase asynchronous stator three-phase symmetric winding of single layer winding star connection.The structural principle of three grades of the rated capacities of other number of poles or four extremely variable, two layer winding, Sine distribution winding, fractional slot winding, delta connection winding etc. can reach with reference to accompanying drawing as described above and draw.
Label in the accompanying drawing is represented:
1---the part winding of U phase; 2---the part winding of V phase; 3---the part winding of W phase; 4---the label of stator slot; 5---the terminals of motor outlet box; 6---the star neutral point line of a part of stator three-phase symmetric winding; 7---another is the star neutral point line of stator three-phase symmetric winding partly.
The utility model is applicable to all threephase asynchronouses, is specially adapted to 4Kw and above mouse-cage type threephase asynchronous.At present the manufacturer of threephase asynchronous is when the bigger threephase asynchronous of production capacity, roll off the production line for the ease of stator winding, avoid adopting thicker lead, three-phase stator winding was exactly multi-channel parallel originally, and was just that each is in parallel dead in the internal interface of threephase asynchronous along separate routes.When implementing the utility model, need only make each of three-phase stator winding in parallel not dead but separately along separate routes in the threephase asynchronous internal interface, and in the outlet box of threephase asynchronous, provide three terminals to each shunt in parallel that has separated, each terminals is all indicated the sequence number of independent part and the separate code name of power supply, and the rated capacity of indicating threephase asynchronous under the various mode of connection of three-phase stator winding in nameplate gets final product, so production technology does not change basically.The threephase asynchronous that does not have multi-channel parallel for original three-phase stator winding, then need only change the arrangement of three-phase stator winding, making three-phase stator winding into two or more independent three-phase symmetric windings partly constitutes, and, for each independent three-phase symmetric winding partly, all in the outlet box of motor, provide three to indicate the sequence number of independent part and the terminals of the separate code name of power supply, indicate that in nameplate the rated capacity of three-phase winding under different modes gets final product.For example, for traditional fixed capacity threephase asynchronous of four utmost points, 24 grooves, three-phase stator winding individual layer star connection, when three-phase stator winding is the two-way parallel connection, be with 1 of the U phase stator winding shown in the accompanying drawing, 7, the winding conductor series connection of 13,19 grooves, 2,8, the winding conductor of 14,20 grooves is also connected, then with U shown in the drawings
1, U
2Termination is dead, and two star neutral points shown in the drawing reference numeral 6,7 also connect extremely.V also is the processing mutually the same with U with the winding of W phase mutually.From outlet box, draw three supply terminalss then.When implementing the utility model, the structure of three-phase stator winding need not change basically, need only be with the U of U phase
1, U
2End does not extremely connect, in like manner the V of V phase
1And V
2And the W of W phase
1And W
2End does not extremely connect yet, owing to be star connection, two star neutral points shown in the drawing reference numeral 6,7 can connect also and can connect, and provide and U in the outlet box of motor then
1, U
2, V
1, V
2, W
1, W
2Corresponding two groups of totally 6 leading-out terminals can constitute the variable threephase asynchronous of rated capacity secondary.In the above-mentioned example, when three-phase stator winding does not have two tunnel parallel connections, the three-phase stator winding of the threephase asynchronous of traditional fixed capacity, be with shown in the drawings 1,2,7,8,13, the winding conductor series connection of 14,19,20 grooves constitutes the U phase winding, V also is in series by corresponding winding conductor with W winding mutually mutually, is connected into star then and three supply terminalss are provided in outlet box.Making it into rated capacity secondary when variable by the utility model, original three-phase stator winding need only be changed, being designed to every as shown in drawings phase stator winding independently partly constitutes by two, and all constitute three-phase symmetric winding separately, and in outlet box, provide U by each independent three phase winding that partly constitute
1, U
2, V
1, V
2, W
1, W
2Six leading-out terminals can constitute the variable threephase asynchronous of rated capacity secondary.
Claims (2)
1. threephase asynchronous that can classification changes its rated capacity, it is characterized in that the three-phase stator winding of threephase asynchronous is designed to some parts independent of each other, when three-phase stator winding is connected into triangle, each independent partly between in motor interior without any tie point, when three-phase stator winding is connected into star, each independent partly between in motor interior or without any tie point, perhaps have only a points of common connection, and any one independent part of three-phase stator winding can both constitute three-phase symmetric winding separately.
2. variable capacity threephase asynchronous according to claim 1, the independent part of each of three-phase stator winding is all drawn three supply terminalss in the terminal box of motor, each supply terminals all marks corresponding independent sequence number and separate code name partly, and when in the nameplate of threephase asynchronous, marking the different connected mode of three-phase winding and three phase mains, the pairing rated capacity of threephase asynchronous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95218746 CN2243138Y (en) | 1995-08-15 | 1995-08-15 | Capacity-variable three-phase asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95218746 CN2243138Y (en) | 1995-08-15 | 1995-08-15 | Capacity-variable three-phase asynchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2243138Y true CN2243138Y (en) | 1996-12-18 |
Family
ID=33867168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95218746 Expired - Fee Related CN2243138Y (en) | 1995-08-15 | 1995-08-15 | Capacity-variable three-phase asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2243138Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018006579A1 (en) | 2016-07-07 | 2018-01-11 | 张世兴 | Power-variable motor and intelligent controller therefor |
| CN107800331A (en) * | 2016-09-06 | 2018-03-13 | 中车株洲电力机车研究所有限公司 | Transmission system and control method applied to the transmission system, device |
| CN108649726A (en) * | 2018-06-06 | 2018-10-12 | 东莞市力辉马达有限公司 | A kind of winding mode of segmented brushless motor |
| WO2019140541A1 (en) | 2018-01-22 | 2019-07-25 | 张世兴 | Combined power motor |
-
1995
- 1995-08-15 CN CN 95218746 patent/CN2243138Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018006579A1 (en) | 2016-07-07 | 2018-01-11 | 张世兴 | Power-variable motor and intelligent controller therefor |
| US10367389B2 (en) | 2016-07-07 | 2019-07-30 | Shixing ZHANG | Intelligently controlled variable power motor |
| CN107800331A (en) * | 2016-09-06 | 2018-03-13 | 中车株洲电力机车研究所有限公司 | Transmission system and control method applied to the transmission system, device |
| WO2019140541A1 (en) | 2018-01-22 | 2019-07-25 | 张世兴 | Combined power motor |
| CN108649726A (en) * | 2018-06-06 | 2018-10-12 | 东莞市力辉马达有限公司 | A kind of winding mode of segmented brushless motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |