CN210350886U - Three-phase synchronous motor - Google Patents
Three-phase synchronous motor Download PDFInfo
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- CN210350886U CN210350886U CN201921673855.5U CN201921673855U CN210350886U CN 210350886 U CN210350886 U CN 210350886U CN 201921673855 U CN201921673855 U CN 201921673855U CN 210350886 U CN210350886 U CN 210350886U
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Abstract
The utility model relates to a three-phase synchronous machine improves the rotor and the stator winding of motor, adopts the output of the high moment of torsion of heavy current during the start-up, in case after the job stabilization, adopts the undercurrent to support the moment of torsion stabilized output, and stator winding realizes that the number of turns is variable and coil magnetic field direction positive and negative is in turn to realize with the rotor on the magnetic field phase-match of different magnetic pole magnet steel, the utility model has the characteristics of energy-conserving power saving, good control performance, temperature rise are low and the reliability is high.
Description
Technical Field
The utility model relates to the field of electric machines, specifically a three-phase synchronous machine.
Background
The current industrial production field, the common essential equipment of motor, for example spinning machine's needs the motor to drive the yarn book and gets rid of, need great moment of torsion during the start, in case after the start-up is stable, need not the output after the start-up, present spinning machine generally adopts three-phase asynchronous machine, because motor stator coil is fixed, after the start-up yarn book job stabilization, still keep being close rated power state work, consequently, power consumption is great, at present industrial product profit margin, need be through the big environment of fine management, this type of motor obviously is not conform to the enterprise's production demand.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a three-phase synchronous machine improves the rotor and the stator winding of motor, adopts the output of heavy current high torque during the start-up, in case after the job stabilization, adopts the undercurrent to support the moment of torsion and stabilize the output, stator winding realizes that the number of turns is variable and the positive and negative alternative of coil magnetic field direction to realize with the rotor on the magnetic field phase-match of different magnetic pole magnet steels, the utility model has the characteristics of energy-conserving power saving, good control performance, temperature rise are low and the reliability is high.
The following technical scheme is adopted for achieving the purpose:
the utility model provides a three-phase synchronous machine, includes stator and rotor, and stator housing's outer wall is provided with control box, is provided with control circuit, its characterized in that in the control box: an even number of radial magnetic steels are arranged in the rotor, the radial magnetic steels axially penetrate through the rotor, and the magnetic poles of adjacent radial magnetic steels are opposite; the ratio of the number of the wire slots of the stator to the number of the radial magnetic steels is a multiple of six, A, B, C three-phase stator windings are arranged in the wire slots, each phase of stator winding consists of windings with the same number or multiple groups of radial magnetic steels, each group of windings comprises a large winding and a small winding, the large winding is connected with the large winding in series, the small winding is connected with the small winding in series, the current flow directions of adjacent windings in each group of in-phase windings are opposite, and each phase of winding in the ABC three-phase winding has two front ends and two tail ends; the front end of the A-phase large winding and the tail end of the A-phase small winding are connected with the same independent external terminal, the tail end of the A-phase large winding is connected with a thermal relay, the front end of the A-phase small winding is connected with an independent external terminal, the tail end of the B-phase large winding and the front end of the B-phase small winding are connected with the same independent external terminal, the front end of the B-phase large winding is connected with a thermal relay, and the tail end of the B-phase small winding is connected with an independent external terminal; the tail end of the C-phase large winding and the front end of the C-phase small winding are connected with the same independent external terminal, the front end of the C-phase large winding is connected with a thermal relay, and the tail end of the C-phase small winding is connected with an independent external terminal; the other six external terminals are respectively connected with two groups of terminals of the motor controller box; the wiring end is connected with the control circuit, and the electric control circuit is connected with a three-phase power supply.
The utility model discloses control circuit switches the big winding circular telegram that makes the three-phase when starting, little winding disconnection, at this moment the winding number of turns is few inductance also little, and the electric current is big, moment of torsion shape is great when consequently starting, start ten seconds and stay motor operating mode stable back, big winding series connection work when control circuit is through switching, the number of turns becomes many inductance grow this moment, the electric current also correspondingly diminishes simultaneously, the motor is in the operating condition that stabilizes the low-power consumption and support the moment of torsion this moment, because normal operating current is less than the motor of homopower, therefore energy consumption and temperature rise are lower.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the internal structure of the motor of the present invention;
fig. 3 is a schematic wiring diagram of the motor winding of the present invention;
fig. 4 is a schematic circuit diagram of the control circuit of the present invention.
Detailed Description
As shown in fig. 1-4, a three-phase synchronous motor includes a stator 1 and a rotor 2, a control box 3 is disposed on an outer wall of a stator housing, a control circuit is disposed in the control box 3, an even number of radial magnetic steels 21 are disposed inside the rotor 2, in this embodiment, four radial magnetic steels 21 are employed, the radial magnetic steels 21 axially penetrate through the rotor 2, and magnetic poles of adjacent radial magnetic steels 21 are opposite; the ratio of the number of the wire slots 11 of the stator 1 to the number of the radial magnetic steels 21 is a multiple of six, a 24-slot stator is adopted in the embodiment, A, B, C three-phase stator windings are arranged in the wire slots 11, each phase of stator winding is composed of windings with the same number or multiple groups of radial magnetic steels, each group of windings comprises a large winding and a small winding, the large winding is connected with the large winding in series, the small winding is connected with the small winding in series, the current flow directions of adjacent windings in each group of windings in the same phase are opposite, for example, in the figure 3, the A-phase windings are connected through the four groups of windings in series, the current directions of the windings from right to right in the four groups of windings in the A phase are clockwise-anticlockwise-clockwise-anticlockwise respectively, and the three-phase windings are respectively provided with two; in the ABC three phases, the front end A1 of the A-phase large winding and the tail end A2 'of the A-phase small winding are connected with the same external terminal R2, the tail end A1' of the A-phase large winding is connected with a thermal relay, the front end A2 of the A-phase small winding is connected with an external terminal R1, the tail end B1 'of the B-phase large winding and the front end B2 of the B-phase small winding are connected with the same external terminal S2, the front end B1 of the B-phase large winding is connected with a thermal relay, and the tail end B2' of the B-phase small winding is connected with an external terminal R1; the tail end C1 'of the C-phase large winding and the front end C2 of the C-phase small winding are connected with the same external terminal T2, the front end C1 of the C-phase large winding is connected with a thermal relay, and the tail end C2' of the C-phase small winding is connected with an external terminal T1; the other six external terminals are respectively connected with two groups of terminals of the motor controller box; the wiring end is connected with the control circuit, and the electric control circuit is connected with a three-phase power supply.
The utility model discloses the working process is such, switch on the power supply, the control circuit circular telegram, control circuit's relay RY1 circular telegram, switch over to J2 contact and switch on with the power, in this moment stator three-phase winding, only big winding is worked alone, winding turns are few inductance and are also little when big winding alone circular telegram when big winding is established ties relatively, therefore working current is great, motor moment of torsion is great this moment, start easily, but big power consumption of power high calorific capacity is big, when big winding is worked alone about 12 seconds, control circuit's IC1 chip sends trigger signal makes relay RY1 cut off the power, the contact switches back to J1 contact, big winding series connection work, the number of turns of winding increases this moment, reactance grow, working current greatly reduces, the little power consumption of electric current, and calorific capacity is few, the motor loss is little, the motor is in the operating condition that stable low power consumption supported the moment of torsion, because normal operating current is less than, therefore, the energy consumption and the temperature rise are lower, and the device has the characteristics of energy conservation, power saving, low temperature rise and high reliability.
Claims (3)
1. The utility model provides a three-phase synchronous machine, includes stator and rotor, and stator housing's outer wall is provided with control box, is provided with control circuit, its characterized in that in the control box: an even number of radial magnetic steels are arranged in the rotor, the radial magnetic steels axially penetrate through the rotor, and the magnetic poles of adjacent radial magnetic steels are opposite; the ratio of the number of the wire slots of the stator to the number of the radial magnetic steels is a multiple of six, A, B, C three-phase stator windings are arranged in the wire slots, each phase of stator winding consists of windings with the same number or multiple groups of radial magnetic steels, each group of windings comprises a large winding and a small winding, the large winding is connected with the large winding in series, the small winding is connected with the small winding in series, the current flow directions of adjacent windings in each group of in-phase windings are opposite, and each phase of winding in the ABC three-phase winding has two front ends and two tail ends; the front end of the A-phase large winding and the tail end of the A-phase small winding are connected with the same independent external terminal, the tail end of the A-phase large winding is connected with a thermal relay, the front end of the A-phase small winding is connected with an independent external terminal, the tail end of the B-phase large winding and the front end of the B-phase small winding are connected with the same independent external terminal, the front end of the B-phase large winding is connected with a thermal relay, and the tail end of the B-phase small winding is connected with an independent external terminal; the tail end of the C-phase large winding and the front end of the C-phase small winding are connected with the same independent external terminal, the front end of the C-phase large winding is connected with a thermal relay, and the tail end of the C-phase small winding is connected with an independent external terminal; the other six external terminals are respectively connected with two groups of terminals of the motor controller box; the wiring end is connected with the control circuit, and the electric control circuit is connected with a three-phase power supply.
2. A three-phase synchronous machine as claimed in claim 1, characterized in that: the number of turns of the large winding is larger than that of the small winding.
3. A three-phase synchronous machine as claimed in claim 2, characterized in that: the ratio of the number of turns of the large winding to the number of turns of the small winding is less than 7: 3 is greater than 1: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921673855.5U CN210350886U (en) | 2019-10-08 | 2019-10-08 | Three-phase synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921673855.5U CN210350886U (en) | 2019-10-08 | 2019-10-08 | Three-phase synchronous motor |
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| Publication Number | Publication Date |
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| CN210350886U true CN210350886U (en) | 2020-04-17 |
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| CN201921673855.5U Active CN210350886U (en) | 2019-10-08 | 2019-10-08 | Three-phase synchronous motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601407A (en) * | 2019-10-08 | 2019-12-20 | 台州熠威机电有限公司 | Three-phase synchronous motor |
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2019
- 2019-10-08 CN CN201921673855.5U patent/CN210350886U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601407A (en) * | 2019-10-08 | 2019-12-20 | 台州熠威机电有限公司 | Three-phase synchronous motor |
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