CN204425122U - For the on-line checkingi structure of permanent magnet synchronous motor rotor magnetic steel temperature - Google Patents
For the on-line checkingi structure of permanent magnet synchronous motor rotor magnetic steel temperature Download PDFInfo
- Publication number
- CN204425122U CN204425122U CN201520024567.2U CN201520024567U CN204425122U CN 204425122 U CN204425122 U CN 204425122U CN 201520024567 U CN201520024567 U CN 201520024567U CN 204425122 U CN204425122 U CN 204425122U
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- China
- Prior art keywords
- end cap
- electric motor
- slip ring
- conducting slip
- motor end
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Abstract
The utility model discloses a kind of on-line checkingi structure for permanent magnet synchronous motor rotor magnetic steel temperature, namely this structure comprises machine shaft, rotor and electric motor end cap, described machine shaft is located at by described rotor, and described electric motor end cap is located at described machine shaft two ends; This structure also comprises temperature element and conducting slip ring, the overlapping punching sheet of described rotor is respectively equipped with cavity at magnet steel two ends, described temperature element is located in the cavity at described magnet steel two ends, described conducting slip ring is located at described machine shaft and is positioned at inside described electric motor end cap, the outer shroud of described conducting slip ring is fixedly connected with inside described electric motor end cap, be connected by wire between described temperature element and the inner ring of conducting slip ring, the outer ring signal lead-out wire of described conducting slip ring passes through described electric motor end cap.This structure conveniently realizes the on-line checkingi of rotor magnetic steel temperature, improves the control precision of motor, ensure that the reliability service of motor.
Description
Technical field
The utility model relates to a kind of on-line checkingi structure for permanent magnet synchronous motor rotor magnetic steel temperature.
Background technology
In permagnetic synchronous motor, in the rotor punching after laminating, be provided with magnet steel, in the running of motor, the magnetic property of magnet steel can change along with the change of temperature, and magnet steel temperature exceedes magnet steel when allowing working temperature, magnet steel can loss of excitation, affects motor reliability of operation.Therefore the high accuracy in order to realize motor controls and guarantees the reliability service of motor, needs accurate measurements magnet steel temperature.But because rotor rotates, the magnet steel temperature be contained in rotor punching cannot detect by direct-on-line.Detection at present to magnetic steel of motor temperature, generally uses indirect mode to estimate magnet steel temperature.Such as: tested by counter electromotive force of motor, and obtain magnet steel temperature by conversion, but this type of detection mode can not the temperature of Obtaining Accurate magnet steel, there is obvious temperature deviation.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of on-line checkingi structure for permanent magnet synchronous motor rotor magnetic steel temperature, this structure conveniently realizes the on-line checkingi of rotor magnetic steel temperature, improve the control precision of motor, ensure that the reliability service of motor.
For solving the problems of the technologies described above, the on-line checkingi structure that the utility model is used for permanent magnet synchronous motor rotor magnetic steel temperature comprises machine shaft, rotor and electric motor end cap, described machine shaft is located at by described rotor, and described electric motor end cap is located at described machine shaft two ends; This structure also comprises temperature element and conducting slip ring, the overlapping punching sheet of described rotor is respectively equipped with cavity at magnet steel two ends, described temperature element is located in the cavity at described magnet steel two ends, described conducting slip ring is located at described machine shaft and is positioned at inside described electric motor end cap, the outer shroud of described conducting slip ring is fixedly connected with inside described electric motor end cap, be connected by wire between described temperature element and the inner ring of conducting slip ring, the outer ring signal lead-out wire of described conducting slip ring passes through described electric motor end cap.
Further, this structure also comprises terminal box, and described terminal box is located at electric machine casing, and the described signal lead-out wire passing electric motor end cap connects the binding post of described terminal box.
Further, described temperature element is thermoelectricity occasionally thermistor.
The on-line checkingi structure being used for permanent magnet synchronous motor rotor magnetic steel temperature due to the utility model have employed technique scheme, namely this structure comprises machine shaft, rotor and electric motor end cap, described machine shaft is located at by described rotor, and described electric motor end cap is located at described machine shaft two ends; This structure also comprises temperature element and conducting slip ring, the overlapping punching sheet of described rotor is respectively equipped with cavity at magnet steel two ends, described temperature element is located in the cavity at described magnet steel two ends, described conducting slip ring is located at described machine shaft and is positioned at inside described electric motor end cap, the outer shroud of described conducting slip ring is fixedly connected with inside described electric motor end cap, be connected by wire between described temperature element and the inner ring of conducting slip ring, the outer ring signal lead-out wire of described conducting slip ring passes through described electric motor end cap.This structure conveniently realizes the on-line checkingi of rotor magnetic steel temperature, improves the control precision of motor, ensure that the reliability service of motor.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the utility model is described in further detail:
Fig. 1 is the schematic diagram of the utility model for the on-line checkingi structure of permanent magnet synchronous motor rotor magnetic steel temperature;
Fig. 2 is overlapping punching sheet, the magnet steel position view of rotor in this structure.
Embodiment
Embodiment as depicted in figs. 1 and 2, the on-line checkingi structure that the utility model is used for permanent magnet synchronous motor rotor magnetic steel temperature comprises machine shaft 1, rotor 2 and electric motor end cap 3, described machine shaft 1 is located at by described rotor 2, and described electric motor end cap 3 is located at described machine shaft 1 two ends; This structure also comprises temperature element 4 and conducting slip ring 5, the overlapping punching sheet 21 of described rotor 2 is respectively equipped with cavity 23 at magnet steel 22 two ends, described temperature element 4 is located in the cavity 23 at described magnet steel 22 two ends, described conducting slip ring 5 is located at described machine shaft 1 and is positioned at inside described electric motor end cap 3, the outer shroud of described conducting slip ring 5 is fixedly connected with inside described electric motor end cap 3, be connected by wire 41 between described temperature element 4 and the inner ring of conducting slip ring 5, the outer ring signal lead-out wire 42 of described conducting slip ring 5 passes through described electric motor end cap 3.
Preferably, this structure also comprises terminal box 6, and described terminal box 6 is located at electric machine casing, and the described signal lead-out wire 42 passing electric motor end cap 3 connects the binding post of described terminal box 6.
In the present embodiment, described temperature element 4 specifically can adopt thermoelectricity occasionally thermistor.
In this structure, namely the cavity at motor rotor magnetic steel two ends gives default at the rotor punching design initial stage, the prerequisite that arranges of this cavity is the magnetic circuit not affecting motor rotor magnetic steel, the thermoelectricity occasionally all kinds of temperature element such as thermistor can be set in cavity, detect the magnet steel temperature of motor operation course in real time; Simultaneously, at machine shaft, conducting slip ring is set, the holding wire of temperature element connects the inner ring of conducting slip ring, the inner ring of conducting slip ring is with machine shaft, rotor synchronous rotary, and the outer shroud of conducting slip ring is fixed on inside electric motor end cap, therefore the outer ring signal lead-out wire of conducting slip ring can pass through electric motor end cap, thus the temperature signal of temperature element can be made to draw electric machine casing, or be connected to the binding post of terminal box, the temperature of Real-Time Monitoring magnet steel is got final product by external all kinds of temperature measuring set.
This structure utilizes conducting slip ring that the temperature element signal being embedded in magnet steel side is drawn electric machine casing, magnet steel temperature is monitored in real time by external temperature measuring instrument, electric machine controller can adjust controling parameters in real time according to the magnet steel temperature of monitoring, makes the Torque Control precision of electric system improve 2%; If magnet steel temperature is protected by electric machine controller during working temperature close to allowing, ensure that magnet steel can not the too high loss of excitation of Yin Wendu.
Claims (3)
1. the on-line checkingi structure for permanent magnet synchronous motor rotor magnetic steel temperature, comprise machine shaft, rotor and electric motor end cap, described machine shaft is located at by described rotor, described electric motor end cap is located at described machine shaft two ends, it is characterized in that: this structure also comprises temperature element and conducting slip ring, the overlapping punching sheet of described rotor is respectively equipped with cavity at magnet steel two ends, described temperature element is located in the cavity at described magnet steel two ends, described conducting slip ring is located at described machine shaft and is positioned at inside described electric motor end cap, the outer shroud of described conducting slip ring is fixedly connected with inside described electric motor end cap, be connected by wire between described temperature element and the inner ring of conducting slip ring, the outer ring signal lead-out wire of described conducting slip ring passes through described electric motor end cap.
2. the on-line checkingi structure for permanent magnet synchronous motor rotor magnetic steel temperature according to claim 1, it is characterized in that: this structure also comprises terminal box, described terminal box is located at electric machine casing, and the described signal lead-out wire passing electric motor end cap connects the binding post of described terminal box.
3. the on-line checkingi structure for permanent magnet synchronous motor rotor magnetic steel temperature according to claim 1 and 2, is characterized in that: described temperature element is thermoelectricity occasionally thermistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520024567.2U CN204425122U (en) | 2015-01-14 | 2015-01-14 | For the on-line checkingi structure of permanent magnet synchronous motor rotor magnetic steel temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520024567.2U CN204425122U (en) | 2015-01-14 | 2015-01-14 | For the on-line checkingi structure of permanent magnet synchronous motor rotor magnetic steel temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204425122U true CN204425122U (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520024567.2U Expired - Fee Related CN204425122U (en) | 2015-01-14 | 2015-01-14 | For the on-line checkingi structure of permanent magnet synchronous motor rotor magnetic steel temperature |
Country Status (1)
| Country | Link |
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| CN (1) | CN204425122U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108631517A (en) * | 2018-03-27 | 2018-10-09 | 江西精骏电控技术有限公司 | A kind of permanent magnet synchronous motor |
| CN113676000A (en) * | 2021-07-15 | 2021-11-19 | 东风电驱动系统有限公司 | Permanent magnet synchronous motor rotor temperature detection device |
| CN113937961A (en) * | 2021-10-22 | 2022-01-14 | 上海汽车变速器有限公司 | Temperature measurement system of motor |
-
2015
- 2015-01-14 CN CN201520024567.2U patent/CN204425122U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108631517A (en) * | 2018-03-27 | 2018-10-09 | 江西精骏电控技术有限公司 | A kind of permanent magnet synchronous motor |
| CN113676000A (en) * | 2021-07-15 | 2021-11-19 | 东风电驱动系统有限公司 | Permanent magnet synchronous motor rotor temperature detection device |
| CN113937961A (en) * | 2021-10-22 | 2022-01-14 | 上海汽车变速器有限公司 | Temperature measurement system of motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20200114 |