CN210958064U - Permanent magnet motor stator and rotor temperature and vibration measuring device and permanent magnet motor - Google Patents
Permanent magnet motor stator and rotor temperature and vibration measuring device and permanent magnet motor Download PDFInfo
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- CN210958064U CN210958064U CN201921937310.0U CN201921937310U CN210958064U CN 210958064 U CN210958064 U CN 210958064U CN 201921937310 U CN201921937310 U CN 201921937310U CN 210958064 U CN210958064 U CN 210958064U
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Abstract
The application relates to a permanent-magnet machine stator and rotor temperature and vibration measuring device and permanent-magnet machine, measuring device includes: the integrated sensor group is used for being inserted into a sensor hole preset on the stator tooth; the sensor hole is positioned in the axial center of the motor stator and in the radial direction of the center line of the stator teeth; the integrated sensor group comprises a non-contact temperature measuring sensor, a contact temperature measuring sensor and a vibration sensor which are sequentially arranged; the non-contact temperature measuring sensor is arranged at one end of the sensor hole close to the top of the stator tooth to detect the temperature of the rotor; the vibration sensor is arranged at one end of the sensor hole close to the stator yoke so as to detect the vibration of the motor; the contact temperature sensor is arranged between the non-contact temperature sensor and the vibration sensor to detect the temperature of the stator. In the above scheme, the temperature of rotor, stator and the vibration condition of motor can be measured simultaneously, and above-mentioned device simple structure, installation are convenient, convenient to use.
Description
Technical Field
The application relates to the technical field of permanent magnet motors, in particular to a permanent magnet motor stator and rotor temperature and vibration measuring device and a permanent magnet motor.
Background
At present, the permanent magnet motor gradually replaces the traditional asynchronous motor by the characteristics of high torque density, high efficiency, wide rotating speed range, high power factor, energy conservation and the like. However, compared with an asynchronous motor, due to the application of the rare earth permanent magnet, the eddy current in the rare earth permanent magnet and the iron core and harmonic waves caused by the influence of high-frequency carrier waves, tooth grooves and the like of the motor enable a motor rotor to generate large ferromagnetic loss, most of the loss is converted into heat to be dissipated, the temperature of a stator is overhigh due to the dissipated heat, and then a stator winding coil is possibly subjected to insulation damage or breakdown, and the coil is possibly short-circuited and ignited in severe cases. On the other hand, the motor may vibrate during rotation due to design and process problems in production, manufacturing, assembly and other links or uncertain factors occurring in long-term operation, and the vibration may also cause demagnetization or loss of magnetization of the permanent magnet, thereby possibly causing equipment failure. In summary, the accumulated high temperature and mechanical vibration may cause permanent unrecoverable demagnetization of the permanent magnet, which seriously affects the load carrying capability of the motor. Therefore, there is a very urgent need for the permanent magnet motor to measure the temperature of the stator and the rotor and the vibration of the stator in real time. The method has the advantages that the data of the temperature of the stator and the rotor of the permanent magnet motor and the vibration of the motor under different working conditions are determined, and not only can the long-term reliable work of maintenance equipment be realized, but also important basis can be provided for the optimization design of the motor.
In the related technology, the temperature measurement of the stator and the rotor of the permanent magnet motor and the vibration measurement of the motor are realized through discrete sensors, the structure installation is complex, and the real-time data monitoring, processing and control are inconvenient to carry out for a long time.
SUMMERY OF THE UTILITY MODEL
The application provides a permanent magnet motor stator and rotor temperature and vibration measuring device and a permanent magnet motor to solve the problems of complex sensor mounting structure and inconvenient use existing in the measuring method of the stator and rotor temperature and vibration of the permanent magnet motor in the related technology.
The above object of the present application is achieved by the following technical solutions:
in a first aspect, an embodiment of the present application provides a permanent magnet motor stator and rotor temperature and vibration measurement apparatus, including: the long-strip-shaped integrated sensor group is used for being inserted into a sensor hole preset on the stator tooth; the sensor hole is positioned in the axial center of the motor stator and in the radial direction of the center line of the stator teeth;
the integrated sensor group comprises a non-contact temperature measuring sensor, a contact temperature measuring sensor and a vibration sensor which are sequentially arranged;
the non-contact temperature measuring sensor is arranged at one end, close to the top of the stator teeth, in the sensor hole to detect the temperature of the rotor; the vibration sensor is arranged at one end of the sensor hole close to the stator yoke so as to detect the vibration of the motor; the contact temperature measuring sensor is arranged between the non-contact temperature measuring sensor and the vibration sensor in the sensor hole to detect the temperature of the stator.
Optionally, the non-contact temperature measuring sensor is an infrared thermopile sensor, the contact temperature measuring sensor is a thermistor sensor, and the vibration sensor is an inductive vibration sensor.
Optionally, each sensor in the sensor group is a mems encapsulated sensor, and the size is 4mm in diameter and 3mm in height of the bottom circle.
Optionally, the permanent magnet motor stator and rotor temperature and vibration measuring device further comprises an aluminum pipe; the sensor group is arranged in the aluminum pipe, and the aluminum pipe is used for being inserted into the sensor hole.
Optionally, the diameter of the sensor hole is 5mm, and the outer diameter of the aluminum tube is 4.5 mm.
Optionally, epoxy glue is filled in the aluminum pipe and used for fixing the sensor group.
Optionally, the device for measuring the temperature and the vibration of the stator and the rotor of the permanent magnet motor further comprises a signal processing device; each sensor in the sensor group is connected to the signal processing device by adopting two outgoing lines; the signal processing device is used for amplifying, isolating and filtering signals acquired by the sensors, converting the processed analog signals into digital signals and transmitting the digital signals to the main controller.
Optionally, all the lead-out wires of each sensor further include a shielding layer.
Optionally, the signal processing device includes an amplifier, a single chip, and a communication circuit.
In a second aspect, an embodiment of the present application further provides a permanent magnet motor, including a permanent magnet motor body with a sensor hole, and any one of the above permanent magnet motor stator and rotor temperature and vibration measuring devices disposed in the sensor hole; the sensor hole is located in the axial center of the motor stator and in the radial direction of the center line of the stator teeth.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
according to the technical scheme provided by the embodiment of the application, three traditional discrete measuring sensors are combined, and the integrated sensor group is arranged in the stator teeth, so that the temperatures of the rotor and the stator and the vibration condition of the motor can be measured simultaneously, and the motor can be monitored effectively in real time for a long time; in addition, the sensor group is simple in structure, convenient and fast in installation process and convenient for users to use, and key operation information of the motor can be collected on the basis, so that data support is provided for design, installation and use of the motor.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic structural diagram of a device for measuring temperature and vibration of a stator and a rotor of a permanent magnet motor according to an embodiment of the present disclosure;
fig. 2 is a schematic radial cross-sectional view of a permanent magnet motor including a permanent magnet motor stator and rotor temperature and vibration measurement device according to an embodiment of the present application;
fig. 3 is a schematic axial cross-sectional view of a permanent magnet motor including a device for measuring temperature and vibration of a stator and a rotor of the permanent magnet motor according to an embodiment of the present disclosure, where fig. 3(a) is an embedded magnetic steel motor, and fig. 3(b) is a surface-mounted magnetic steel motor;
FIG. 4 is a partially enlarged schematic view of FIG. 3 (b);
fig. 5 is a schematic structural diagram of a signal processing apparatus according to an embodiment of the present disclosure;
reference numerals: 1-a sensor group; 11-a non-contact temperature measuring sensor; 12-a contact temperature sensor; 13-a vibration sensor; 2-a stator; 21-stator teeth; 22-stator yoke; 3-a rotor; 4-an aluminum tube; 5-signal processing means.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
Before describing the technical solution of the present application in detail, a method for measuring the temperature and vibration of a stator and a rotor of a permanent magnet motor in the prior art and problems of the method are described first.
At present, the mainstream stator temperature measurement mode is to embed a thermal resistance temperature sensor in the motor production process, specifically, in the stator winding process, and two signal lines of the sensor are merged into a plug along with a motor encoder line group and then are connected to a motor driver. The structure has complex wiring and long wiring, and the long-distance lead of the thermal resistance sensor causes the resistance value to deviate, so that the temperature of the stator coil cannot be accurately obtained.
And mainstream motor manufacturers especially relate to the way that permanent magnet motor rotor temperature measurement in the prior art to electric main shaft, energy-saving motor etc. all is indirect measurement basically, specifically: a hole is formed in the center of the shaft, and after the motor runs for a period of time, the thermal resistance temperature sensor or the infrared temperature sensor is inserted into the shaft hole to indirectly measure the temperature of the rotor. The mode can not accurately test the heating condition of the motor and the actual temperature of the permanent magnet in the running process, can not monitor the temperature data in real time so as to carry out corresponding measures, and is only the factory test of a motor manufacturer on the motor. If the rotor needs to be directly measured in temperature, a thermal resistor, a thermocouple or a fiber bragg grating is usually adopted, temperature measuring probes need to be arranged on the surface of the rotor during actual temperature measurement, signal wires are respectively led out from each probe and led out through the center of a shaft, and the mode is complex in installation, high in operation difficulty and capable of increasing the operation failure rate of equipment.
The most widely used instrument for measuring vibration in the manufacturing and testing links of the motor is a motor vibration tester. The motor vibration tester is an indispensable detection device for motor manufacturers. When the motor vibration tester detects, the motor is placed on the test bench, the motor is fixed by the clamp, a plurality of test sensor probes of the vibration tester are adhered to a motor shell by glue, and when a rotor rotates, the vibration condition of the motor is tested. However, the vibration tester can only detect when the motor leaves the factory, and cannot effectively monitor the motor for a long time after the motor is installed in the equipment. For a motor matched with equipment, a user often needs to be equipped with a vibration detection device to jointly use the vibration detection device and a controller to perform algorithm configuration, and corresponding speed reduction, sudden stop or power-off protection is performed when the motor vibrates abnormally. In the face of the user's demand, the vibration tester cannot meet the application demand.
The following embodiments of the present application first solve the above-identified problems of complicated installation of the sensor structure and inconvenience in real-time data monitoring processing and control for a long time.
Example one
Referring to fig. 1-4, fig. 1 is a schematic structural diagram of a device for measuring temperature and vibration of a stator and a rotor of a permanent magnet motor according to an embodiment of the present disclosure; fig. 2 is a schematic radial cross-sectional view of a permanent magnet motor including a permanent magnet motor stator and rotor temperature and vibration measurement device according to an embodiment of the present application; fig. 3 is a schematic axial cross-sectional view of a permanent magnet motor including a device for measuring temperature and vibration of a stator and a rotor of the permanent magnet motor according to an embodiment of the present disclosure, where fig. 3(a) is an embedded magnetic steel motor, and fig. 3(b) is a surface-mounted magnetic steel motor; fig. 4 is a partially enlarged schematic view of fig. 3 (b).
As shown in fig. 1 to 3, the measuring apparatus includes: the long-strip-shaped integrated sensor group 1 is used for being inserted into a sensor hole preset on the stator tooth 21; the sensor hole is positioned in the axial center of the motor stator and in the radial direction of the center line of the stator teeth 21;
the integrated sensor group 1 comprises a non-contact temperature measuring sensor 11, a contact temperature measuring sensor 12 and a vibration sensor 13 which are sequentially arranged;
the non-contact temperature measuring sensor 11 is arranged at one end of the sensor hole close to the top of the stator teeth 21 to detect the temperature of the rotor 3; a vibration sensor 13 for being disposed in an end of the sensor hole close to the stator yoke 22 to detect vibration of the motor; the contact type temperature sensor 12 is provided between the noncontact type temperature sensor 11 and the vibration sensor 13 in the sensor hole to detect the temperature of the stator 2.
Specifically, the non-contact temperature sensor 11 may be an infrared thermopile sensor, the contact temperature sensor 12 may be a thermistor sensor, and the vibration sensor 13 is an inductive vibration sensor.
The infrared thermopile sensor converts absorbed infrared radiation into heat energy according to the principle that any object radiates energy outwards at a certain wavelength (namely the basic law of blackbody radiation) only when the temperature of the object is above absolute zero, converts temperature change into an electronic signal, and amplifies and displays the electronic signal. The infrared thermopile sensor has the advantage of no need of an infrared emitting and receiving device like an infrared temperature measuring device, namely, a simpler structure. When the temperature measuring device is used, the probe of the infrared thermopile sensor is aligned to the direction of the measured rotor 3, and the temperature of the rotor 3 can be obtained.
It should be noted that, as shown in fig. 3(b) or fig. 4, a stainless steel protective sleeve or a carbon fiber protective sleeve is disposed outside the rotor magnetic steel of the general surface-mount motor (i.e., in fig. 3(b) or fig. 4, a black arc portion between the stator 2 and the rotor 3). The infrared radiation characteristic of the object is related to factors such as material type, surface roughness, physical and chemical structure, material thickness and the like besides the temperature of the object. The emissivity of the stainless steel protective sleeve as a smooth metal surface is only 0.16, and the emissivity after oxidation is 0.85. The higher the radiance, the more accurate the temperature sensor collects data. Therefore, when the thermopile infrared temperature measurement probe is used, the stainless steel protective sleeve corresponding to the thermopile infrared temperature measurement probe needs to be brushed with black matt paint, so that the radiance is increased. If the protective sleeve is a carbon fiber protective sleeve, no treatment is needed. For the same reason, for the embedded motor shown in fig. 3(a), the surface of the silicon steel sheet at the center of the rotor axis needs to be brushed with black matt paint.
The thermistor sensor (also called a thermal resistance sensor) obtains the self resistance value based on the characteristic that the resistance value of a conductor or a semiconductor changes along with the change of temperature, then obtains the ambient temperature based on the unique corresponding relation between the resistance value and the temperature, converts the temperature change into an electronic signal, and amplifies and displays the electronic signal. The thermistor sensor can be made into a two-wire system or a three-wire system to eliminate the influence of line impedance. In use, the temperature of the stator 2 can be obtained by placing the probe of the thermistor sensor against the stator teeth 21.
The inductive sensor is a device for realizing non-electric quantity electrical measurement by utilizing the self inductance or the change of mutual inductance coefficient of a coil. The sensor can measure displacement, pressure, vibration, strain, flow and other parameters. Inductive vibration sensors are used to measure vibrations. It should be noted that, in theory, the vibration of the motor can be measured by disposing the vibration sensor at any position of the motor, but since the vibration is usually more obvious on the side close to the stator yoke 22 relative to the side close to the rotor 3, when the vibration sensor is disposed on the side close to the stator yoke 22, the vibration is more easily detected, and the measurement effect is better.
In particular, the non-contact temperature sensor 11 and the contact temperature sensor 12 may be an integral sensor model STP2481 from SPD Micro Corporation, which includes the functions of both, as a possible implementation. The vibration sensor may be selected from the Analog Devices model ADXL 001. Of course, the three sensors may also be selected from other models, and the non-contact temperature measuring sensor 11 and the contact temperature measuring sensor 12 may also be selected from mutually independent products as long as the size and other measurement requirements can be met.
The three sensors in the above example are Micro-Electro-Mechanical systems (MEMS) packaged sensors, all having a bottom circle with a diameter of 4mm (millimeters) and a height of 3mm (millimeters).
In the scheme, three traditional discrete measuring sensors are combined, and the integrated sensor group 1 is arranged in the stator teeth 21, so that the temperatures of the rotor 3 and the stator 2 and the vibration condition of the motor can be measured simultaneously, and the motor can be monitored effectively in real time for a long time; in addition, the sensor group 1 is simple in structure, convenient and fast in installation process and convenient for users to use, and can collect key operation information of the motor on the basis and provide data support for design, installation and use of the motor.
Further, for convenience of installation and use by a user, the sensor group 1 may be disposed in the aluminum pipe 4, so that the sensor group 1 is disposed in the sensor hole through the aluminum pipe 4.
In addition, as can be seen from the above description and the accompanying drawings, the diameter of the sensor hole must be smaller than the width of the cross section of the stator teeth 21, and in order to meet the use of the permanent magnet motor with the smaller width of the cross section of the stator teeth 21, the diameter of the sensor hole should be designed to be as small as possible, and considering the volume of the currently available sensor, the diameter of the sensor hole may be set to be about 5mm, and correspondingly, the outer diameter of the aluminum pipe 4 may be about 4.5 mm.
Further, if the diameter of the selected sensor group 1 is smaller than the inner diameter of the aluminum tube 4 (for example, the types listed in the above embodiments are selected), measures are required to fix the sensor group 1, and in some embodiments, the sensor group 1 can be fixed by filling the aluminum tube 4 with epoxy glue. The epoxy glue is also called epoxy resin and epoxy resin glue, and the cured product has the characteristics of water resistance, chemical corrosion resistance, glittering and translucent property and the like. It should be noted that, because the epoxy glue has poor thermal conductivity, if the epoxy glue is filled, the epoxy glue cannot cover the probe of the non-contact temperature measuring sensor 11, and the probe of the contact temperature measuring sensor 12 should be arranged to be close to the inner wall of the aluminum pipe 4, that is, the temperature of the stator teeth 21 is conducted to the probe of the contact temperature measuring sensor 12 through the aluminum pipe 4, otherwise, the temperature sensors cannot accurately measure the temperatures of the stator 2 and the rotor 3.
In addition, the aluminum pipe 4 can be directly fixed in the sensor hole in a clearance fit manner, or the sensor hole is set to be a tapered hole with a little taper, so that the stability of fixation is improved. In order to avoid the sensor group 1 from falling out of the sensor hole due to vibration, it is generally recommended to drill the sensor hole from above the motor (i.e., from above during use), preferably from directly above (as shown in fig. 3).
In the first embodiment, only the collecting part (the sensor group 1) of the temperature and vibration signals is explained, and when the sensor group is used, the collected signals need to be transmitted to the signal processing device for processing, so that the state of the motor can be monitored. Based on this, the following embodiments will explain the transmission and processing part of the signal.
Example two
Referring to fig. 1, as shown in fig. 1, the apparatus for measuring temperature and vibration of a stator and a rotor of a permanent magnet motor further includes: a signal processing device 5; each sensor in the sensor group 1 adopts two outgoing lines to access the signal processing device 5; the signal processing device 5 is used for amplifying, isolating and filtering the signals acquired by the sensors, converting the processed analog signals into digital signals and transmitting the digital signals to the main controller.
Specifically, all outgoing lines can be led out from the tail of the vibration sensor 13, and the signal processing device 5 comprises an amplifier, a single chip microcomputer and a communication circuit; the processing procedure of the signal is shown in fig. 5: the analog signals collected by each sensor are amplified, isolated and filtered through an amplifier, then the processed analog signals are transmitted to a single chip microcomputer (specifically any STM8L series 8-bit single chip microcomputer of ST company) to be converted into digital signals, and finally the digital signals are transmitted to a main controller of the motor through a communication circuit in an RS485 bus form. It will of course be appreciated that other similar bus forms may be selected, such as Modbus, CAN bus, etc., without limitation.
It is noted that, for the signal processing device 5 described above, similar devices exist in the existing permanent magnet motor temperature and vibration measurement technology, and perform the same function; in addition, the main controller of the motor is used for displaying and monitoring real-time operation parameters of the motor, controlling and protecting the operation of the motor, and the like, which is consistent with the prior art and will not be described in detail.
In addition, in order to avoid the signal that sensor group 1 gathered being disturbed by outside electromagnetic signal in the transmission process, can set up the shielding layer, that is to set up the netted weaving layer of metal outside the lead-out wire of sensor and wrap up the signal line, the shielding layer also has the effect of preventing the outside radiation electromagnetic energy of circuit. The shield may be secured to the motor housing. In some embodiments, the length of the lead-out wire and the shielding layer is 20 cm.
Based on the same conception as that of the permanent magnet motor, the embodiment of the application also provides a permanent magnet motor, which comprises a permanent magnet motor body with a sensor hole and the permanent magnet motor stator and rotor temperature and vibration measuring device which is arranged in the sensor hole and is used for the permanent magnet motor in any embodiment; the sensor hole is located in the axial center of the motor stator and in the radial direction of the center line of the stator teeth.
Compared with the prior art, the structure provided by the application overcomes the problem of inconvenient installation, the measurement mode and the measurement means provided by the application solve the problem of real-time acquisition and processing of the key data of the motor, and can perform corresponding analysis on the data, so that the effect of early warning and judgment on the fault of the motor equipment is achieved.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. A permanent magnet motor stator and rotor temperature and vibration measuring device is characterized by comprising: the long-strip-shaped integrated sensor group is used for being inserted into a sensor hole preset on the stator tooth; the sensor hole is positioned in the axial center of the motor stator and in the radial direction of the center line of the stator teeth;
the integrated sensor group comprises a non-contact temperature measuring sensor, a contact temperature measuring sensor and a vibration sensor which are sequentially arranged;
the non-contact temperature measuring sensor is arranged at one end, close to the top of the stator teeth, in the sensor hole to detect the temperature of the rotor; the vibration sensor is arranged at one end of the sensor hole close to the stator yoke so as to detect the vibration of the motor; the contact temperature measuring sensor is arranged between the non-contact temperature measuring sensor and the vibration sensor in the sensor hole to detect the temperature of the stator.
2. The permanent magnet motor stator and rotor temperature and vibration measuring device according to claim 1, wherein the non-contact temperature measuring sensor is an infrared thermopile sensor, the contact temperature measuring sensor is a thermistor sensor, and the vibration sensor is an inductive vibration sensor.
3. The permanent magnet motor stator and rotor temperature and vibration measuring device according to claim 2, wherein each sensor in the sensor group is a Micro Electro Mechanical System (MEMS) packaged sensor, and the size of each sensor is 4mm in diameter and 3mm in height of a bottom circle.
4. The permanent magnet motor stator and rotor temperature and vibration measurement device of claim 3 further comprising aluminum tubes; the sensor group is arranged in the aluminum pipe, and the aluminum pipe is used for being inserted into the sensor hole.
5. The apparatus of claim 4, wherein the diameter of the sensor hole is 5mm, and the outer diameter of the aluminum tube is 4.5 mm.
6. The permanent magnet motor stator and rotor temperature and vibration measuring device of claim 4, wherein the aluminum tube is filled with epoxy glue for fixing the sensor set.
7. The permanent magnet motor stator and rotor temperature and vibration measuring device according to any one of claims 1-6, further comprising signal processing means; each sensor in the sensor group is connected to the signal processing device by adopting two outgoing lines; the signal processing device is used for amplifying, isolating and filtering signals acquired by the sensors, converting the processed analog signals into digital signals and transmitting the digital signals to the main controller.
8. The apparatus of claim 7, wherein all the leads of each sensor include a shielding layer.
9. The apparatus of claim 7, wherein the signal processing means comprises an amplifier, a single-chip microcomputer and a communication circuit.
10. A permanent magnet motor comprising a permanent magnet motor body with a sensor hole and a permanent magnet motor stator and rotor temperature and vibration measuring device according to any one of claims 1-9 disposed in the sensor hole; the sensor hole is located in the axial center of the motor stator and in the radial direction of the center line of the stator teeth.
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| CN201921937310.0U CN210958064U (en) | 2019-11-11 | 2019-11-11 | Permanent magnet motor stator and rotor temperature and vibration measuring device and permanent magnet motor |
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| CN201921937310.0U CN210958064U (en) | 2019-11-11 | 2019-11-11 | Permanent magnet motor stator and rotor temperature and vibration measuring device and permanent magnet motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110690795A (en) * | 2019-11-11 | 2020-01-14 | 西安安凡达智能电机有限公司 | Permanent magnet motor stator and rotor temperature and vibration measuring device and permanent magnet motor |
| WO2022233854A1 (en) * | 2021-05-05 | 2022-11-10 | Zf Friedrichshafen Ag | Sensor disc for integrating a sensor into an electric machine, stator for an electric machine, and method for operating a sensor disc |
| US11527941B2 (en) * | 2020-12-03 | 2022-12-13 | GM Global Technology Operations LLC | Apparatus and method for rotor temperature measurement |
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2019
- 2019-11-11 CN CN201921937310.0U patent/CN210958064U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110690795A (en) * | 2019-11-11 | 2020-01-14 | 西安安凡达智能电机有限公司 | Permanent magnet motor stator and rotor temperature and vibration measuring device and permanent magnet motor |
| US11527941B2 (en) * | 2020-12-03 | 2022-12-13 | GM Global Technology Operations LLC | Apparatus and method for rotor temperature measurement |
| WO2022233854A1 (en) * | 2021-05-05 | 2022-11-10 | Zf Friedrichshafen Ag | Sensor disc for integrating a sensor into an electric machine, stator for an electric machine, and method for operating a sensor disc |
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