CN104319968A - Single-phase low-voltage high-torque soft-start asynchronous motor - Google Patents
Single-phase low-voltage high-torque soft-start asynchronous motor Download PDFInfo
- Publication number
- CN104319968A CN104319968A CN201410618404.7A CN201410618404A CN104319968A CN 104319968 A CN104319968 A CN 104319968A CN 201410618404 A CN201410618404 A CN 201410618404A CN 104319968 A CN104319968 A CN 104319968A
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- CN
- China
- Prior art keywords
- voltage
- motor
- phase
- electric controller
- asynchronous motor
- 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.)
- Pending
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Classifications
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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
- H02K1/16—Stator cores with slots for windings
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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
- H02K1/22—Rotating parts of the magnetic circuit
-
- 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
- H02K17/30—Structural association of asynchronous induction motors with auxiliary electric devices influencing the characteristics of the motor or controlling the motor, e.g. with impedances or switches
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/40—Windings characterised by the shape, form or construction of the insulation for high voltage, e.g. affording protection against corona discharges
Abstract
The invention relates to the technical field of single-phase asynchronous motors. A single-phase low-voltage high-torque soft-start asynchronous motor comprises an electrical controller, a housing, a stator winding, a rotor, a front end cover and a rear end cover and is characterized in that the electrical controller is installed in a fan cover on the outer side of the rear end cover of the motor and located on a shaft between the rear end cover of the motor and a fan, a terminal box is installed on the housing, an overload protection device is arranged on the line between the terminal box and the electrical controller, the input end of the electrical controller provides single-phase voltage, and the output end of the electrical controller provides three-phase voltage. A rotor groove of the motor is an oblique-shoulder round-bottom groove, stator coils of the stator winding are distributed in an unequal-turn-number mode to form a near-sinusoidal winding and are embedded into a groove of a stator core, and polytetrafluoroethylene layer coated enameled wires are arranged on the surface of the stator winding. The single-phase low-voltage high-torque soft-start asynchronous motor is reasonable in design, simple and compact in structure, easy to manufacture, low in cost, reliable in performance and capable of achieving intelligent work in high-voltage and low-voltage environments, and the 4-kilowatt-power asynchronous motor can be used by means of an ordinary household mains supply and has wide application value.
Description
Technical field
The present invention relates to the technical field of monopole asynchronous motor, specifically a kind of single-phase low-voltage large torque soft start asynchronous motor.The monopole asynchronous motor of what power supply accommodation was wider have soft start function.
Background technology
On agricultural machinery, widely use monopole asynchronous motor at present, in remote rural area and under-developed area, existing electrical network house lead in voltage is generally all on the low side, and the monopole asynchronous motor that agricultural machinery uses is start-up and operation poor performance at lower voltages.Current maximum power only can reach 3 kilowatts, and failure rate is very high, only because the little failure rate caused of supply voltage low capacity just can reach about 15%, brings trouble to use operation.Because the operational efficiency of motor is low, little the causing of torque wastes a large amount of electric energy, adds unnecessary economic loss to user.Thus, the use of high-power single-phase asynchronous motor when electrical network house lead in low voltage is limited.
Summary of the invention
The object of the invention is the deficiency in order to solve above-mentioned technology, provide a kind of reasonable in design, structure simple, easily manufacture, cost be low, easy to use, the single-phase low-voltage large torque soft start asynchronous motor of motor performance can be improved.
The technical solution adopted in the present invention is: a kind of single-phase low-voltage large torque soft start asynchronous motor, comprise electric controller, casing, stator winding, rotor and front and rear cover, it is characterized in that in the fan guard that electric controller is arranged on outside motor rear end plate, on the axle of electric controller between motor rear end plate and fan, casing is provided with terminal box, circuit between terminal box and electric controller is provided with overload protection arrangement, electric controller input is single-phase voltage, electric controller output is three-phase voltage, the rotor of motor is in tiltedly takeing on round bottomed vessel, the stator coil of stator winding is distributed as and does not wait the nearly sine windings of circle, stator coil is embedded in the groove of stator core, there is the enamelled wire of polytetrafluorethylecoatings coatings on stator winding surface.
The shell of described electric controller is the radiator that tubular becomes IGBT pipe.
The present invention has reasonable in design, and structure is simple, compact, easily manufactures, and cost is low, dependable performance, can realize intelligent work, have use value widely in the environment of high-low voltage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is electrical schematic diagram of the present invention.
Mark in Fig. 1: 1, front end housing, 2, stator winding, 3, rotor, 4, terminal box, 5, rear end cap, 6, bearing, 7, controller, 8, fan guard, 9, fan.
Embodiment
By Fig. 1, Fig. 2 is known, a kind of single-phase low-voltage large torque soft start asynchronous motor, comprise electric controller 7, casing, stator winding 2, rotor 3 and front and rear cover 1, 5, its electric controller 7 is arranged in the fan guard 8 outside motor rear end plate 5, on the axle of electric controller 7 between motor rear end plate 5 and fan 9, casing is provided with terminal box 4, circuit between terminal box 4 and electric controller 7 is provided with overload protection arrangement, electric controller 7 input is single-phase voltage, electric controller 7 output is three-phase voltage, rotor 3 groove of motor is in tiltedly takeing on round bottomed vessel, the stator coil of stator winding 2 is distributed as and does not wait the nearly sine windings of circle, stator coil is embedded in the groove of stator core, stator winding 2 surface has the enamelled wire of polytetrafluorethylecoatings coatings to have anticorona effect.
During assembling, stator winding 2 is in casing, one end of rotor 3 is fixedly mounted on front end housing 1 by bearing, rotor 3 enters in stator winding 2, front end housing 1 is fixed by bolt and casing, and the other end of rotor 3 is fixedly installed togather by bearing 6 and rear end cap 5, is provided with controller 7 in the outer end of rear end cap 5, the outboard shafts of controller 7 is provided with fan 9, and the left end of fan guard 8 is fastened by bolts on casing.When motor is close to limit load, overload protection arrangement is cut off the electricity supply, and can provide the protection to machine.The electrical control of motor and input voltage are single-phase 160 ~ 220V, export as the alternating current through phase place copped wave, and output voltage can set arbitrarily by motor working standard frequency.Stator winding 2 is formed in the groove of stator core for stator coil is embedded in.By changing the U/F ratio that controller exports, making motor can drag nominal load in supply voltage 120 ~ 220V excursion and starting; Because rotor 3 groove of motor is in tiltedly takeing on round bottomed vessel, the rotor skin effect that Appropriate application starting current and current harmonics produce, at utmost improves the starting current that motor start-up torque reduces; In the fan guard 8 of motor, controller 7 is installed, the Automatic adjusument of the soft start to motor, overload protection and supply voltage can be realized.
Electrical principle: it is made up of rectifier, filter circuit, inverter three part.Rectifier is transformed to direct current single phase industrial frequence electricity.In direct voltage after rectifier rectification, the pulsating voltage containing power supply 6 overtones band.In order to suppress voltage fluctuation, adopt resistance and electric capacity composition filter circuit Absorbing Fluctuation voltage (electric current).Next be that the three-phase alternating current being required frequency and voltage by DC power conversion by inverter supplies motor, make machine operation.VD1, VD2, VD3, VD4 are rectifier; CF1, CF2, RC1, RC2 form filter circuit.IGBT pipe (V1 ~ V6) forms inversion major loop.
Monopole asynchronous motor technology of the present invention is compared with existing common electric machine technology, the operational environment of its energy simultaneous adaptation high-low voltage; Have reasonable in design, structure is simple, compact, and easily cause, cost is low, dependable performance, energy-conservation feature, can make the power of asynchronous motor reach 4 kilowatts with the civil power of average family.
Claims (2)
1. a single-phase low-voltage large torque soft start asynchronous motor, comprise electric controller, casing, stator winding, rotor and front and rear cover, it is characterized in that in the fan guard that electric controller is arranged on outside motor rear end plate, on the axle of electric controller between motor rear end plate and fan, casing is provided with terminal box, circuit between terminal box and electric controller is provided with overload protection arrangement, electric controller input is single-phase voltage, electric controller output is three-phase voltage, the rotor of motor is in tiltedly takeing on round bottomed vessel, the stator coil of stator winding is distributed as and does not wait the nearly sine windings of circle, stator coil is embedded in the groove of stator core, there is the enamelled wire of polytetrafluorethylecoatings coatings on stator winding surface.
2. single-phase low-voltage according to claim 1 large torque soft start asynchronous motor, is characterized in that the shell of described electric controller is the radiator that tubular becomes IGBT pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410618404.7A CN104319968A (en) | 2014-11-06 | 2014-11-06 | Single-phase low-voltage high-torque soft-start asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410618404.7A CN104319968A (en) | 2014-11-06 | 2014-11-06 | Single-phase low-voltage high-torque soft-start asynchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104319968A true CN104319968A (en) | 2015-01-28 |
Family
ID=52375167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410618404.7A Pending CN104319968A (en) | 2014-11-06 | 2014-11-06 | Single-phase low-voltage high-torque soft-start asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104319968A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230160A (en) * | 2016-08-19 | 2016-12-14 | 苏州德能电机股份有限公司 | A kind of integral energy-saving motor with single-phase input, three-phase output function |
-
2014
- 2014-11-06 CN CN201410618404.7A patent/CN104319968A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230160A (en) * | 2016-08-19 | 2016-12-14 | 苏州德能电机股份有限公司 | A kind of integral energy-saving motor with single-phase input, three-phase output function |
| CN106230160B (en) * | 2016-08-19 | 2019-02-15 | 苏州德能电机股份有限公司 | A kind of integral energy-saving motor with single-phase input, three-phase output function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150128 |