WO2014078927A2 - Motor de indução monofásico - Google Patents
Motor de indução monofásico Download PDFInfo
- Publication number
- WO2014078927A2 WO2014078927A2 PCT/BR2013/000509 BR2013000509W WO2014078927A2 WO 2014078927 A2 WO2014078927 A2 WO 2014078927A2 BR 2013000509 W BR2013000509 W BR 2013000509W WO 2014078927 A2 WO2014078927 A2 WO 2014078927A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coil
- induction motor
- phase induction
- branch
- electrically connected
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/02—Windings characterised by the conductor material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/04—Asynchronous induction motors for single phase current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/04—Asynchronous induction motors for single phase current
- H02K17/08—Motors with auxiliary phase obtained by externally fed auxiliary windings, e.g. capacitor motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
Definitions
- the present invention relates to a single phase induction motor having a hybrid winding.
- the single phase induction motor being used in hermetic refrigeration compressors.
- the single-phase induction motor is the most widely used type of motor in domestic refrigeration applications (refrigerators, freezers and air conditioners) and is also used in various applications such as washer / dryer, fans and pumps.
- Single-phase induction motors have the advantage that they can be connected to the mains phase voltage commonly available in homes and small rural properties, unlike three-phase motors. Additionally, this type of motor comprises two windings arranged on the stator, one of which is the main winding and the other is the auxiliary winding (or starter winding), the auxiliary winding has as its primary function to generate the rotating field of the single phase induction motor.
- Single-phase induction motors known in the art most of the time have the main and auxiliary winding made of copper, which material has excellent thermal and electrical properties, is an excellent electrical conductor, thus having low resistivity. electric (in the range 1, 673 x 10-6 ohm. cm at 20 ° C).
- the application of copper is not restricted to use in single-phase induction motor windings, due to its efficiency, strength and reliability, copper is the most used metal in any type of application where electrical or thermal conductivity is present. This is because copper has excellent electrical conductivity, is compatible with connectors and other electrical devices and is easy to handle, which facilitates its installation. Additionally, copper meets the electrical specifications of the most diverse countries.
- single-phase induction motors known in the art use aluminum windings, aluminum being used in the manufacture of both main and auxiliary windings. Additionally, single-phase induction motors are known in the art which perform a combination of two types of conductors for the manufacture of stator windings.
- the first configuration would be the manufacture of main winding and auxiliary copper winding, such configuration is used in high efficiency and / or high power density motors and has a high manufacturing cost.
- the second configuration makes use of the main copper winding and the aluminum auxiliary winding, this configuration is used when it is possible to replace a small part of the total copper volume with aluminum conductors.
- the third configuration is used when there is the possibility of replacing most of the total volume of copper with aluminum conductors, this configuration is the manufacture of the main winding aluminum and auxiliary winding copper.
- the fourth and last known configuration in the prior art makes use of the main winding and aluminum auxiliary winding, this configuration is used in engines that do not require high efficiency and / or high power density. Description of the prior art based on the drawings
- Figure 1 illustrates the four electrical winding configurations of a single-phase induction motor known in the prior art.
- Such prior art motors as already mentioned, have the main winding and auxiliary winding made from the use of a single conductive material (copper or aluminum) or have the main winding made of copper (or aluminum) and the auxiliary winding. made of aluminum (or copper).
- single-phase induction motors known in the art do not have copper and aluminum conductors in the same winding as proposed in the present invention.
- the only known exception would be US 7,772,737, however, this patent suggests that each branch of each winding is formed by only one type of material, which impairs motor operation, as previously described.
- Figure 1 (a) represents the first winding configuration of a single-phase induction motor known in the state of the art.
- this motor has coils arranged at one of the stator poles P1 and coils arranged at the opposite pole P2.
- stator wherein the first coil P1a, the second coil P1b, the third coil P2a and the fourth
- This coil P2b is composed of a first conductive material, in this case copper.
- auxiliary winding A also comprises a fifth coil A1 and a sixth coil A2 made of copper. This type of configuration is used in high efficiency motors and has a high manufacturing cost.
- Figure 1 (b) shows the configuration of windings where coils located on pole P1 and coils located on opposite pole P2 continue to be manufactured from However, in this configuration it covers the auxiliary winding A of the induction motor is made of aluminum.
- Such a configuration has a slightly lower manufacturing cost compared to the manufacturing cost of the configuration shown in figure 1 (b).
- Figure 1 (d) shows the configuration in which all windings (coils located at pole P1 and coils located at opposite pole P2 and auxiliary winding coils A) of single-phase induction motor are made of cost-effective aluminum.
- This configuration has the lowest manufacturing cost, however, considering that the coils of the main winding comprise 75% of the total volume of electric conductors present in the motor winding, the number of motors in which it is possible to use the
- the configurations shown in figures 1 (c) and 1 (d) are very small, since the use of aluminum is limited by the fill factor (ratio between the area occupied by the windings and the maximum available area to dispose them) of the motors. single phase induction.
- the fourth configuration (main winding and aluminum auxiliary winding) has the lowest cost, however, and as already mentioned, as the main winding is responsible for up to 75% of the total conductor volume, the number of motors in which this configuration can be used is very small, so in most cases aluminum cannot be used to manufacture the main winding, precisely because of the limitations filling the slots.
- the present invention makes use of a single phase induction motor having a hybrid winding, such hybrid winding comprising aluminum conductors together with copper conductors in a same branch of the winding, enhancing the applicability of aluminum in single-phase induction motors, thus reducing the total motor cost.
- the present invention makes use of single-phase induction motors with hybrid windings, such motors can be sized to be electrically powered by nominal voltage values of 115-127VAC or 220-240VAC.
- the present invention makes use of single-phase hybrid winding-driven induction motors, such motors can be sized for use in bivolt motors, so that the same motor can be electrically powered by rated voltage values of 115-127VAC or 220-240VAC.
- the present invention aims to provide a single-phase induction motor with hybrid windings.
- a single phase induction motor comprising a stator, the stator comprising a winding with a first coil P1a, a second coil P1b, a third coil P2a and a fourth coil P2b.
- the first coil P1a and the third coil P2a being made of a first conductive material 2.
- the second coil P1b and the fourth coil P2b being made of a second conductive material 3, with different resistivity than the first conductive material 2.
- the single-phase induction motor being It is configured such that the first coil P1a and the second coil P1b are arranged in one of the stator poles P1.
- the third coil P2a and the fourth coil P2b are arranged at the opposite pole P2 to that of the first coil P1a and the second coil P1b.
- the first coil P1a and the fourth coil P2b are electrically connected via a serial connection, configuring a first branch (R1).
- the second coil P1 and the third coil P2a are connected through a serial connection, configuring a second branch R2.
- Figure 1 Illustrates the electrical connections of a single-phase induction motor known in the state of the art.
- Figure 2 A representation of the electrical connection of a single phase induction motor as proposed in the present invention.
- Figure 3 It is a representation of the electrical connection of one of the windings of a single phase induction motor as proposed in the present invention, with the connection of branches R1 and R2 in series.
- Figure 4 It is a representation of the electrical connection of one of the windings of a single phase induction motor as proposed in the present invention, with the connection of branches R1 and R2 in parallel.
- Such a single-phase induction motor comprises a four-coil main winding, a first coil P1a, a second coil P1b, a third coil P2a and a fourth coil P2b, wherein the first coil P1a and the third coil P2a are preferably made of a single coil.
- first conductive material 2 this being copper.
- the second coil P1b and the second coil P2b are preferably made of a second conductive material 3, this being aluminum.
- the main winding is configured such that the first coil P1a and the second coil P1b are in one of the stator poles P1 and the third coil P2a and the fourth coil P2b are on the opposite pole P2 of the stator.
- the serial electrical connection of the first coil P1a and the fourth coil P2b configures a first branch R1 of the single-phase induction motor object of the present invention, whereas the serial electrical connection of the second coil P1b and of the third coil P2a configures a second branch R2.
- Such form of electrical connection of the coils of branches R1 and R2 configures a hybrid induction motor cross connection described in the present invention and shown in figure 2.
- the single-phase induction motor proposed in the present invention guarantees the balance of inductances and resistances and consequently ensures that the current in the motor winding is the same. Additionally, the single-phase induction motor enables the use of an aluminum coil with a different number of turns than the copper coil without causing current flow imbalance or harmonic torque generation.
- the single-phase induction motor further comprises an auxiliary winding A.
- auxiliary winding A comprises a fifth coil A1 and a sixth coil A2 electrically connected in series and manufactured from the same. material. It should be noted that in an additional configuration of the present single-phase induction motor, the auxiliary winding A could have the fifth coil A1 made of copper and the sixth coil A2 made of aluminum, or vice versa.
- the present configuration can be used for the construction of single-phase bivolt induction motors, ie configured to be electrically powered by nominal voltage values of 115-127VAC or 220-240VAC without the need to change the number of turns or wire diameter.
- the R1 and R2 branches should be electrically connected in series as shown in Figure 3, while for the lowest rated voltage (115-127 VAC) them in parallel as shown in figure 4.
- Figure 3 shows the wiring diagram that must be made in case of rated voltage in the range 220-240VAC.
- branch R1 comprised of first coil P1a and fourth coil P2b
- branch R2 comprised of second coil P1b and third coil P2a.
- the first coil P1a and the third coil P2a are made of a first material 2, which is copper
- the second coil P1b and the fourth coil P2b are made of a second material 3, which is aluminum .
- connection of the R1 and R2 branches in series allows the voltage balance between these branches, dividing the voltage exactly in half.
- Figure 4 shows the wiring diagram that must be made in case of rated voltage in the range 115-127VAC.
- branch R1 comprised of first coil P1a and fourth coil P2b
- branch R2 comprised of second coil P1b and third coil P2a.
- the first coil P1a and the third coil P2a are made of copper and coils P1b and P2b are made of aluminum.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
- Induction Machinery (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/646,575 US20150326082A1 (en) | 2012-11-26 | 2013-11-26 | Single-phase induction motor |
CN201380061562.0A CN104823371A (zh) | 2012-11-26 | 2013-11-26 | 单相感应马达 |
CA2892281A CA2892281A1 (en) | 2012-11-26 | 2013-11-26 | A single-phase induction motor |
MX2015006611A MX2015006611A (es) | 2012-11-26 | 2013-11-26 | Motor de induccion de fase unica. |
EP13814406.8A EP2924856B1 (en) | 2012-11-26 | 2013-11-26 | Single-phase induction motor |
ES13814406.8T ES2628927T3 (es) | 2012-11-26 | 2013-11-26 | Motor de inducción monofásico |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRBR102012029983-6A BR102012029983A2 (pt) | 2012-11-26 | 2012-11-26 | Motor de indução monofásico |
BRBR1020120299836 | 2012-11-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2014078927A2 true WO2014078927A2 (pt) | 2014-05-30 |
WO2014078927A3 WO2014078927A3 (pt) | 2015-01-15 |
Family
ID=49884832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BR2013/000509 WO2014078927A2 (pt) | 2012-11-26 | 2013-11-26 | Motor de indução monofásico |
Country Status (8)
Country | Link |
---|---|
US (1) | US20150326082A1 (pt) |
EP (1) | EP2924856B1 (pt) |
CN (1) | CN104823371A (pt) |
BR (1) | BR102012029983A2 (pt) |
CA (1) | CA2892281A1 (pt) |
ES (1) | ES2628927T3 (pt) |
MX (1) | MX2015006611A (pt) |
WO (1) | WO2014078927A2 (pt) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107888032B (zh) * | 2017-12-11 | 2019-07-09 | 利欧集团浙江泵业有限公司 | 一种单相双速双电压异步电动机 |
US11522427B2 (en) | 2020-08-28 | 2022-12-06 | Emerson Electric Co. | Single phase induction motors including aluminum windings and high permeability low coreloss steel |
TWI808529B (zh) * | 2021-11-08 | 2023-07-11 | 謝仲賢 | 雙電壓門機控制系統 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3488569A (en) * | 1967-04-04 | 1970-01-06 | Gen Electric | Multivoltage alternating current electric motor stator |
US3774062A (en) * | 1971-12-20 | 1973-11-20 | Gen Electric | Stator assembly for single phase induction motor employing aluminum alloy starting winding |
US6255755B1 (en) * | 1998-06-04 | 2001-07-03 | Renyan W. Fei | Single phase three speed motor with shared windings |
US7772737B1 (en) * | 2009-02-25 | 2010-08-10 | Emerson Electric Co. | Two conductor winding for an induction motor circuit |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU476728B2 (en) * | 1971-12-20 | 1976-09-30 | General Electric Company | Dynamoelectric machine stator assembly |
KR100444326B1 (ko) * | 2002-02-06 | 2004-08-16 | 삼성광주전자 주식회사 | 단상 유도 전동기 및 이를 구비하는 밀폐형 왕복동식 압축기 |
US8384263B2 (en) * | 2008-02-14 | 2013-02-26 | Hitachi, Ltd. | Rotating electrical machine having a compact stator |
CN201303262Y (zh) * | 2008-10-14 | 2009-09-02 | 林仕供 | 倍双电压单相电机的主体装置 |
JP5304427B2 (ja) * | 2009-05-14 | 2013-10-02 | 株式会社デンソー | 回転電機の駆動システム |
-
2012
- 2012-11-26 BR BRBR102012029983-6A patent/BR102012029983A2/pt not_active IP Right Cessation
-
2013
- 2013-11-26 US US14/646,575 patent/US20150326082A1/en not_active Abandoned
- 2013-11-26 MX MX2015006611A patent/MX2015006611A/es not_active Application Discontinuation
- 2013-11-26 EP EP13814406.8A patent/EP2924856B1/en active Active
- 2013-11-26 CN CN201380061562.0A patent/CN104823371A/zh active Pending
- 2013-11-26 ES ES13814406.8T patent/ES2628927T3/es active Active
- 2013-11-26 CA CA2892281A patent/CA2892281A1/en not_active Abandoned
- 2013-11-26 WO PCT/BR2013/000509 patent/WO2014078927A2/pt active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3488569A (en) * | 1967-04-04 | 1970-01-06 | Gen Electric | Multivoltage alternating current electric motor stator |
US3774062A (en) * | 1971-12-20 | 1973-11-20 | Gen Electric | Stator assembly for single phase induction motor employing aluminum alloy starting winding |
US6255755B1 (en) * | 1998-06-04 | 2001-07-03 | Renyan W. Fei | Single phase three speed motor with shared windings |
US7772737B1 (en) * | 2009-02-25 | 2010-08-10 | Emerson Electric Co. | Two conductor winding for an induction motor circuit |
Also Published As
Publication number | Publication date |
---|---|
ES2628927T3 (es) | 2017-08-04 |
CN104823371A (zh) | 2015-08-05 |
EP2924856B1 (en) | 2017-04-12 |
US20150326082A1 (en) | 2015-11-12 |
MX2015006611A (es) | 2015-08-05 |
CA2892281A1 (en) | 2014-05-30 |
WO2014078927A3 (pt) | 2015-01-15 |
EP2924856A2 (en) | 2015-09-30 |
BR102012029983A2 (pt) | 2014-10-07 |
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