CN2506015Y - Active phase shift circular field single phase AC motor - Google Patents
Active phase shift circular field single phase AC motor Download PDFInfo
- Publication number
- CN2506015Y CN2506015Y CN 01259864 CN01259864U CN2506015Y CN 2506015 Y CN2506015 Y CN 2506015Y CN 01259864 CN01259864 CN 01259864 CN 01259864 U CN01259864 U CN 01259864U CN 2506015 Y CN2506015 Y CN 2506015Y
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- Prior art keywords
- winding
- motor
- phase
- circuit
- auxiliary winding
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Abstract
The utility model relates to an active dephasing circular field single-phase AC motor and pertains to the field of single-phase AC motor. The stator magnetic field of the utility model is always a circular magnetic field, which is connected in series with an active dephasing circuit 3 through a secondary winding 2; a constant current circuit 4 can be added according to needs, which ensures a fixed electrical angle Theta always between the secondary winding current and the current of a principal winding 1, which means the principal winding and the secondary winding forms the fixed electrical angle Theta in the space, and ensures that Theta plus Phi is equal to 180 degrees, or either Theta or Phi is plus 90 degrees and the other is minus 90 degrees; besides, the magnetic potential of the principle winding and the secondary winding equals, thus forming the circular magnetic field. Replacing single-phase AC motor of the prior art, the utility model enlarges torque and power and improves efficiency and a frequency control system is formed, leading the principle winding and the secondary winding to be involved in frequency control to realize soft start; thus reducing the system cost.
Description
Technical field
The utility model belongs to the single-phase AC motor field, and it both can be the single phase alternating current (A.C.) asynchronous motor, also can be single-phase reluctance formula synchronous motor and single-phase hysteresis synchronous motor.
Background technology
The stator field of existing single-phase AC motor is oval magnetic field in the ordinary course of things, is circular magnetic field in one or two special working point only.In case the load of supply voltage, frequency, motor, rotating speed wherein have a parameter to change, cause that revolutional slip changes, and just can become oval magnetic field again.Oval magnetic field reduces the moment of motor output, and efficient reduces.
Summary of the invention
The purpose of this utility model provides a kind of high-output power and torque, high efficiency single-phase AC motor, its stator winding magnetic field, when the operation of the unsaturated and motor stabilizing of magnetic circuit, always a circular magnetic field does not become oval magnetic field with the change of supply voltage, frequency, motor load, rotating speed.
The purpose of this utility model, realize by following technical scheme:
A kind of single-phase AC motor, its stator winding circuit (as Fig. 1), comprise main winding 1, auxiliary winding 2, active phase-shift circuit 3 and freewheeling circuit 4, it is characterized in that: in its auxiliary winding circuit, the series active phase-shift circuit makes the auxiliary winding electric current, always differ a fixing electrical degree θ with main winding current, simultaneously, make main winding and auxiliary winding on the locus, differ an electrical degree , and make θ+=180 ° suitably by the locus of row's main winding and auxiliary winding; Perhaps making has one among θ+=0 ° and θ and the and is+and 90 °, one is-90 °; Also, main winding magnetic potential and auxiliary winding magnetic potential are equated suitably by the connection in series-parallel number of turn of row's auxiliary winding.The formed magnetic field of stator air gap is exactly a circular magnetic field.
In the auxiliary winding circuit, as required, the freewheeling circuit 4 of can connecting, the freewheeling circuit of also can not connecting.
The utility model compared with prior art has following advantage:
1, during with different motor load, rotating speed, as long as magnetic circuit is unsaturated and the motor stabilizing operation, its stator field is a circular magnetic field always at different supply voltages, frequency for motor of the present utility model.Therefore, to the motor of identical seat No. and same pole logarithm, the utility model motor increases than the output torque of prior art motor, and power output increases, the stock utilization height of iron core, copper cash, and efficient improves, energy savings.
2, after load motor of the present utility model added the single-phase inversion circuit, whole motor windings comprised that main winding and auxiliary winding all participates in frequency control and realizes soft start.And the single-phase AC motor of prior art can not be realized soft start, can only realize frequency control by main winding after starting.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is a kind of circuit theory diagrams of active phase-shift circuit;
Fig. 3 is freewheeling circuit figure;
Fig. 4 is a kind of winding diagram of stator winding connection;
Fig. 5 is the block diagram of single-phase inversion power drives the utility model motor.
Embodiment
Below in conjunction with accompanying drawing and by embodiment the utility model is further described:
Embodiment 1, active phase-shift circuit such as Fig. 2.R wherein
1, D
1～D
4, IC
1Form synchronous sampling circuit, by IC
2, R
2, R
3, R
4, C
2, C
3, T
3, D
9, D
10Form sawtooth-wave circuit, this sawtooth is equal with the half period of power supply wave period, and sawtooth waveforms is from T
3Collector electrode output, be added to IC
3Positive input terminal.C
1, D
5～D
8, R
6, C
4, D
15Form DC-stabilized circuit.This operating voltage is through R
5, KP
1, R
7After the dividing potential drop, be added to IC as reference voltage
3Negative input end.In case sawtooth voltage is little during a little more than this reference voltage, IC
3Output is just becoming, T
2Conducting.By T
1, IC
4, D
11～D
14, R
12, R
13, C
5Form an electronic switch.T
2During conducting, T
1Conducting, a point becomes path to an end of power supply, and auxiliary winding gets electric, the IC if we adjust
3The reference voltage of negative input end makes T
1Conducting when 90 ° of supply voltages, then auxiliary winding than main winding with regard to phase shift 90 ° of electrical degrees, and the voltage of auxiliary winding is supply voltage half.
The arrangement of stator winding such as Fig. 4,24 grooves, 4 grades, two layer winding.M wherein
1m
2Be main winding, Sine distribution, 4 coil series connection under extremely.a
1a
2Be auxiliary winding, main winding and auxiliary winding is an orthogonal arrangement, and each coil number and main winding under extremely of auxiliary winding equates, also is positive chorded winding.Because the voltage of auxiliary winding is main winding voltage half, so auxiliary winding is 2 coil series connection under extremely, in parallel in twos again, the electric current of every lead of main winding and auxiliary winding is equal like this, the number of turn of main winding and auxiliary winding also equates, so the formed magnetic potential of main winding and auxiliary winding equates.
Single phase alternating current (A.C.) asynchronous machine machine, seat No. are 71, stator winding 24 grooves, 4 utmost points, the winding diagram of stator winding such as Fig. 4.Rotor is the mouse cage winding, 28 grooves, cast aluminium.Active phase-shift circuit such as Fig. 2 that auxiliary winding is connected, the T on the major loop of active phase-shift circuit
1One termination power, a termination a point; Can also connect in this circuit freewheeling circuit such as Fig. 3, a termination a point, a termination b point; The freewheeling circuit of also can not connecting is with a, b point short circuit.When supply voltage was 220V/50Hz, rated power was 180 watts, and efficient is 63%, and prior art motor model is JZ08A-4,120 watts of rated power, efficient 50%.
Single-phase bridge inverter input voltage 220V50Hz, output 0-60Hz, maximum output voltage 220V, 300 watts of rated output powers, No. 71 supports of active phase shift circular field single phase alternating current (A.C.) asynchronous motor, 180 watts of rated output powers, 0～50Hz are speed regulation by constant torque, 50～60Hz is constant-power speed regulation, can realize soft start.
Claims (2)
1, single-phase AC motor, comprise stator and rotor, stator winding comprises main winding and auxiliary winding, it is characterized in that: in the auxiliary winding circuit, the series active phase-shift circuit makes electric current and the electric current in the main winding in the auxiliary winding differ a fixing electrical degree θ, simultaneously suitably by the locus of arranging main winding and auxiliary winding, make main winding and auxiliary winding on the locus, differ an electrical degree , and make θ+=180 °; Perhaps make θ+=0 °, and have one to be 90 ° among θ and the , one is-90 °; Suitably by the connection in series-parallel number of turn of row's auxiliary winding, main winding magnetic potential and auxiliary winding magnetic potential are equated simultaneously.
2, single-phase AC motor according to claim 1 is characterized in that: in the auxiliary winding circuit, and the freewheeling circuit of can also connecting as required.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01259864 CN2506015Y (en) | 2001-08-23 | 2001-08-23 | Active phase shift circular field single phase AC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01259864 CN2506015Y (en) | 2001-08-23 | 2001-08-23 | Active phase shift circular field single phase AC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2506015Y true CN2506015Y (en) | 2002-08-14 |
Family
ID=33668146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01259864 Expired - Fee Related CN2506015Y (en) | 2001-08-23 | 2001-08-23 | Active phase shift circular field single phase AC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2506015Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1776999B (en) * | 2004-11-17 | 2012-01-11 | 三星电子株式会社 | Single-phase induction motor and method for reducing noise in the same |
| CN103762806A (en) * | 2014-01-21 | 2014-04-30 | 杭州电子科技大学 | Method for restraining vibration torques of shaded pole type single phase alternating current asynchronous motors |
-
2001
- 2001-08-23 CN CN 01259864 patent/CN2506015Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1776999B (en) * | 2004-11-17 | 2012-01-11 | 三星电子株式会社 | Single-phase induction motor and method for reducing noise in the same |
| CN103762806A (en) * | 2014-01-21 | 2014-04-30 | 杭州电子科技大学 | Method for restraining vibration torques of shaded pole type single phase alternating current asynchronous motors |
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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 |