CN104734427A - Testing method for three-phase electric machine rotation direction and three-phase electric machine stator module - Google Patents
Testing method for three-phase electric machine rotation direction and three-phase electric machine stator module Download PDFInfo
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- CN104734427A CN104734427A CN201310727384.2A CN201310727384A CN104734427A CN 104734427 A CN104734427 A CN 104734427A CN 201310727384 A CN201310727384 A CN 201310727384A CN 104734427 A CN104734427 A CN 104734427A
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Abstract
The invention provides a testing method for three-phase electric machine rotation direction and a three-phase electric machine stator module. The testing method for the three-phase electric machine rotation method comprises the steps that a magnet is arranged in a rotating magnetic field formed by a stator of the three-phase electric machine in a pivoted mode; the stator of the three-phase electric machine is started up; the rotation direction of the three-phase electric machine is judged through observing the rotation direction of the magnetic. According to the technical scheme of the testing method for the three-phase electric machine rotation direction and the three-phase electric machine stator module, the rotation direction of the three-phase electric machine can be judged before a rotor is assembled, and the trouble that due to the fact that the rotation direction of the rotor is opposite to the expected rotation direction, the three-phase electric machine needs to be disassembled and assembled again is avoided.
Description
Technical field
The present invention relates to electric machines test technical field, the method for inspection turned in particular to a kind of three phase electric machine and three-phase motor stator assembly.
Background technology
DC frequency-changing centrifuge is the efficient stepless speed regulation unit adopting " AC-DC-AC " mode to carry out frequency translation, the motor that it uses is AC permanent magnet synchronous motor, motor stator structure is similar to traditional threephase asynchronous machine, and DC frequency-changing centrifuge belongs to the one of three phase electric machine.The stator of permagnetic synchronous motor is also electrically driven (operated) by 380V three-phase, and do not assemble complete when motor carrys out goods, stator and rotor separate goods, in the pre-assembly, cannot judge motor steering.If the three phase supply line mark on motor stator pastes mistake, reversion after motor can be caused to assemble makes overall performance test abnormal.
Summary of the invention
The present invention aims to provide and a kind ofly before assembling rotor, detects the method for inspection and three-phase motor stator assembly that three phase electric machine turns to.
To achieve these goals, according to an aspect of the present invention, provide the method for inspection that a kind of three phase electric machine turns to, comprise the steps: step S10: in the rotating magnetic field that the stator that magnet is arranged on three phase electric machine is pivotly formed; Step S20: the stator starting three phase electric machine; Step S30: judge turning to of three phase electric machine by the direction of rotation of observing magnet.
Further, the method for inspection that three phase electric machine of the present invention turns to also comprises the steps: step S41: reduce the voltage that the stator winding in the stator of three phase electric machine passes into.
Further, the method for inspection that three phase electric machine of the present invention turns to also comprises the steps: step S42: improve the electric current that the stator winding in the stator of three phase electric machine passes into.
Further, step S42 comprises further: the Current Limits that the stator winding in the stator of three phase electric machine passes into is fixed on 40A to 50A.
Further, step S10 comprises further: magnet is arranged on the stator of three phase electric machine be used for hold in the container cavity of rotor.
According to a further aspect in the invention, provide a kind of three-phase motor stator assembly, comprising: three-phase motor stator, there are three stator winding and hold the container cavity of rotor; Magnet, is arranged in container cavity pivotly.
Further, three-phase motor stator assembly of the present invention also comprises: three the second current supply lines, connects one to one with three stator winding; Voltage regulating device, regulates the supply power voltage of three the second current supply lines.
Further, voltage regulating device is three, and three voltage regulating devices and three the second current supply lines connect one to one.
Further, three-phase motor stator assembly of the present invention also comprises: three the second current supply lines, connects one to one with three stator winding; Regulating current device, regulates the supply current of three the second current supply lines.
Further, three-phase motor stator assembly of the present invention also comprises: current sensing means, detects the supply current of at least one the second current supply line.
Apply technical scheme of the present invention, rotating magnetic field can be formed after the stator of three phase electric machine is activated, because magnet arranges in this rotating magnetic field, therefore, rotating magnetic field can apply active force to magnet, this active force makes magnet rotate, and the direction of rotation of this magnet is exactly turning to of three phase electric machine, namely the turning to of rotor.As the above analysis, the method for inspection that three phase electric machine of the present invention turns to can judge turning to of this three phase electric machine before assembling rotor, avoided the trouble turning to the three phase electric machine of dismounting again againsting one's expectation caused due to rotor.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic flow sheet of the embodiment of the method for inspection that three phase electric machine according to the present invention turns to; And
Fig. 2 shows the structural representation of the embodiment according to three-phase motor stator assembly of the present invention.
Wherein, the Reference numeral in above-mentioned figure is as follows:
10, three-phase motor stator; 11, stator winding; 20, compass; 21, magnet; 31, the second current supply line; 32, voltage regulating device; 33, regulating current device.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, the method for inspection that the three phase electric machine of the present embodiment turns to comprises step S10, step S20 and step S30.Step S10: in the rotating magnetic field that the stator that magnet is arranged on three phase electric machine is pivotly formed.Step S20: the stator starting three phase electric machine.Step S30: judge turning to of three phase electric machine by the direction of rotation of observing magnet.Step S10 and step S20 in no particular order, preferably, first implementation step S10, then implementation step S20.Preferably, magnet is bar magnet.Further, magnet is the needle in compass, that is, in the rotating magnetic field that stator compass being arranged on three phase electric machine is formed.
The method of inspection of application the present embodiment, rotating magnetic field can be formed after the stator of three phase electric machine is activated, because magnet arranges in this rotating magnetic field, therefore, rotating magnetic field can apply active force to magnet, this active force makes magnet rotate, and the direction of rotation of this magnet is exactly turning to of three phase electric machine, namely the turning to of rotor.As the above analysis, the method for inspection that the three phase electric machine of the present embodiment turns to can judge turning to of this three phase electric machine before assembling rotor, avoided the trouble turning to the three phase electric machine of dismounting again againsting one's expectation caused due to rotor.
As shown in Figure 1, the method for inspection that the three phase electric machine of the present embodiment turns to also comprises step S41, step S41: reduce the voltage that the stator winding in the stator of three phase electric machine passes into.Reduce voltage when motor can be prevented directly to be connected with 380V power supply, do not having rotor engagement and under not cooling oil cooled situation, high voltage is easy to cause in three phase electric machine three stator winding 11 to burn because of high temperature.Step S41 can implement before step S20, also can implement after step S20.
As shown in Figure 1, the method for inspection that the three phase electric machine of the present embodiment turns to also comprises step S42, step S42: improve the electric current that the stator winding in the stator of three phase electric machine passes into.Increase the intensity that electric current can improve the rotating magnetic field that stator is formed, and then easily drive magnet rotates.
In the present embodiment, step S42 comprises further: the Current Limits that the stator winding in the stator of three phase electric machine passes into is fixed on 40A to 50A.Shown by the abundant experimental results of inventor, flow into the electric current of stator winding when 40A to 50A, the rotating magnetic field that stator is formed can stably rotate by drive magnet, and above-mentioned current value range is also relatively applicable to stator winding, can not cause damage to stator winding.
In the present embodiment, step S10 comprises further: magnet is arranged on the stator of three phase electric machine be used for hold in the container cavity of rotor.Because namely rotor is positioned at container cavity after assembly, therefore, magnet is arranged in container cavity, can the rotation of model rotor more accurately.Preferably, compass is arranged on the stator of three phase electric machine be used for hold in the container cavity of rotor.
Present invention also provides a kind of three-phase motor stator assembly, as shown in Figure 2, the three-phase motor stator assembly of the present embodiment comprises three-phase motor stator 10 and magnet 21, and three-phase motor stator 10 has three stator winding 11 and holds the container cavity of rotor.Magnet 21 is arranged in container cavity.Namely can be observed the rotation of magnet 21 by being energized to three stator winding 11, and then judge turning to of three phase electric machine.Concrete testing process describes hereinbefore, then this repeats no more.
The three-phase motor stator assembly of the present embodiment also comprises electric cabinet (not shown), and electric cabinet comprises the first current supply line, and the first current supply line is connected with three stator winding 11 respectively.Can easily at any time for three stator winding 11 provide electric energy by electric cabinet.
As shown in Figure 2, the three-phase motor stator assembly of the present embodiment also comprises compass 20, and compass 20 is arranged in container cavity, and compass 20 has needle, and needle forms magnet 21.Compass 20 easily buys, and stable performance.In addition, because needle arranges pivotly to be arranged in compass 20, therefore only compass 20 need be fixed to assigned address.Certainly, magnet 21 also can be common bar magnet.Preferably, compass 20 is placed directly in container cavity, without the need to any syndeton.Certainly, compass 20 also can be fixed in container cavity.
As shown in Figure 2, the three-phase motor stator assembly of the present embodiment also comprises voltage regulating device 32 and three the second current supply lines, 31, three the second current supply lines 31 and three stator winding 11 and connects one to one.Second current supply line 31 is the wires of drawing from stator winding 11.The stator winding 11 that each second current supply line 31 is correspondence provides electric energy.Voltage regulating device 32 regulates the supply power voltage of three the second current supply lines 31.Like this, changed the voltage of three stator winding 11 by voltage regulating device 32, the voltage of three stator winding 11 can be prevented excessive and burnt.In addition, each second current supply line 31 is provided with switch.Preferably, three the second current supply lines 31 are all connected with the first current supply line, and the first current supply line is equivalent to the bus of three the second current supply lines 31, and the first current supply line is connected with three stator winding 11 with realization respectively by three the second current supply lines 31.Certainly, as feasible execution mode, the first current supply line is three, and three the second current supply lines 31 form three the first current supply lines.
As shown in Figure 2, in the present embodiment, voltage regulating device 32 is three, and three voltage regulating devices 32 and three the second current supply lines 31 connect one to one.Like this, a voltage regulating device 32 can change the voltage of the second corresponding current supply line 31, and then change the voltage of the stator winding 11 be connected with this second current supply line 31, that is, the voltage of three stator winding 11 can not be identical, and the three-phase motor stator assembly that improve the present embodiment adapts to the ability of external environment.Certainly, as feasible execution mode, assuming that the first current supply line is equivalent to the bus of three the second current supply lines 31, so, voltage regulating device 32 also can be one, this voltage regulating device 32 is arranged on the first current supply line, can regulate the supply power voltage of three the second current supply lines 31 equally.
As shown in Figure 2, the three-phase motor stator assembly of the present embodiment also comprises regulating current device 33, and regulating current device 33 regulates the supply current of three the second current supply lines 31.The electric current of three stator winding 11 can be changed by regulating current device 33, and then change the intensity of the rotating magnetic field that stator produces.
As shown in Figure 2, in the present embodiment, regulating current device 33 is three, and three regulating current devices 33 and three the second current supply lines 31 connect one to one.In like manner regulating current device 33 can change the electric current of the second corresponding current supply line 31, and then change the electric current of the stator winding 11 be connected with this second current supply line 31, that is, the electric current of three stator winding 11 can not be identical, and the three-phase motor stator assembly that improve the present embodiment adapts to the ability of external environment.
As shown in Figure 2, the three-phase motor stator assembly of the present embodiment also comprises current sensing means (not shown), current sensing means detects the supply current of second current supply line 31, and preferably, current sensing means detects and is connected with second current supply line 31.Electric current due to three the second current supply lines 31 is consistent substantially, and therefore, current sensing means detects the electric current of one of them the second current supply line 31.Certainly, current sensing means can be connected with three the second current supply lines 31 respectively, and like this, current sensing means can detect the electric current of each the second current supply line 31.
In the present embodiment, voltage regulating device 32 is variable-voltage transformer.Variable-voltage transformer is undertaken by pressure regulation button, and aforesaid operations is more convenient, and accuracy is high.Variable-voltage transformer plays the effect reducing voltage.
In the present embodiment, regulating current device 33 is dry-type transformer.Dry-type transformer increases except the function of current except playing, and can also play the effect reducing voltage, by dry-type transformer and variable-voltage transformer with the use of better effects if.
In the present embodiment, current sensing means is clamp meter.Clamp meter is convenient to be taken off from the second current supply line 31, when not carrying out current detecting to the second current supply line 31, without the need to arranging clamp meter, improves the utilization rate of current sensing means.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for inspection that turns to of three phase electric machine, is characterized in that, comprise the steps:
Step S10: in the rotating magnetic field that the stator that magnet is arranged on three phase electric machine is pivotly formed;
Step S20: the stator starting described three phase electric machine;
Step S30: judge turning to of described three phase electric machine by the direction of rotation of observing described magnet.
2. the method for inspection according to claim 1, is characterized in that, also comprises the steps:
Step S41: reduce the voltage that the stator winding in the stator of described three phase electric machine passes into.
3. the method for inspection according to claim 1, is characterized in that, also comprises the steps:
Step S42: improve the electric current that the stator winding in the stator of described three phase electric machine passes into.
4. the method for inspection according to claim 3, is characterized in that, described step S42 comprises further:
The Current Limits that stator winding in the stator of described three phase electric machine passes into is fixed on 40A to 50A.
5. the method for inspection according to claim 1, is characterized in that, described step S10 comprises further:
Described magnet is arranged on the stator of three phase electric machine be used for hold in the container cavity of rotor.
6. a three-phase motor stator assembly, is characterized in that, comprising:
Three-phase motor stator (10), has three stator winding (11) and holds the container cavity of rotor;
Magnet (21), is arranged in described container cavity pivotly.
7. three-phase motor stator assembly according to claim 6, is characterized in that, also comprise:
Three the second current supply lines (31), connect one to one with described three stator winding (11);
Voltage regulating device (32), regulates the supply power voltage of three the second current supply lines (31).
8. three-phase motor stator assembly according to claim 7, is characterized in that, described voltage regulating device (32) is three, and described three voltage regulating devices (32) and described three the second current supply lines (31) connect one to one.
9. three-phase motor stator assembly according to claim 6, is characterized in that, also comprise:
Three the second current supply lines (31), connect one to one with described three stator winding (11);
Regulating current device (33), regulates the supply current of described three the second current supply lines (31).
10. three-phase motor stator assembly according to claim 9, is characterized in that, also comprise:
Current sensing means, detects the supply current of the second current supply line (31) described at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310727384.2A CN104734427A (en) | 2013-12-24 | 2013-12-24 | Testing method for three-phase electric machine rotation direction and three-phase electric machine stator module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310727384.2A CN104734427A (en) | 2013-12-24 | 2013-12-24 | Testing method for three-phase electric machine rotation direction and three-phase electric machine stator module |
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| CN104734427A true CN104734427A (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310727384.2A Pending CN104734427A (en) | 2013-12-24 | 2013-12-24 | Testing method for three-phase electric machine rotation direction and three-phase electric machine stator module |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01308144A (en) * | 1988-06-03 | 1989-12-12 | Mitsubishi Electric Corp | Arrangement checking method for polyphase armature winding in electric rotary machine |
| CN101639520A (en) * | 2009-08-17 | 2010-02-03 | 南车株洲电力机车有限公司 | Detecting method of alternating current traction motor stator connection line |
| CN202903897U (en) * | 2012-09-29 | 2013-04-24 | 芜湖博耐尔汽车电气系统有限公司 | Detection tool for detecting phase sequence of stator assembly of electric automobile air-conditioner motor |
-
2013
- 2013-12-24 CN CN201310727384.2A patent/CN104734427A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01308144A (en) * | 1988-06-03 | 1989-12-12 | Mitsubishi Electric Corp | Arrangement checking method for polyphase armature winding in electric rotary machine |
| CN101639520A (en) * | 2009-08-17 | 2010-02-03 | 南车株洲电力机车有限公司 | Detecting method of alternating current traction motor stator connection line |
| CN202903897U (en) * | 2012-09-29 | 2013-04-24 | 芜湖博耐尔汽车电气系统有限公司 | Detection tool for detecting phase sequence of stator assembly of electric automobile air-conditioner motor |
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Application publication date: 20150624 |