CN209805612U - Mounting structure of motor rotary transformer and temperature signal line EMI filter - Google Patents
Mounting structure of motor rotary transformer and temperature signal line EMI filter Download PDFInfo
- Publication number
- CN209805612U CN209805612U CN201920730821.9U CN201920730821U CN209805612U CN 209805612 U CN209805612 U CN 209805612U CN 201920730821 U CN201920730821 U CN 201920730821U CN 209805612 U CN209805612 U CN 209805612U
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- motor
- thermocouple
- mounting structure
- signal line
- temperature signal
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Abstract
The utility model discloses a motor is soon become and mounting structure of temperature signal line EMI wave filter, this structure includes motor casing, stator winding, the rotor, become the encoder soon, thermocouple and EMI wave filter, stator winding and rotor are located in the motor casing respectively, it connects the rotor pivot to become the encoder soon, the thermocouple is buried underground in stator winding, be equipped with in the motor casing and extend to the outer signal cable chamber of motor casing and power cable chamber, signal cable chamber is located to the EMI wave filter, become encoder soon and thermocouple signal line entering signal cable chamber and connect the input of EMI wave filter, EMI wave filter output is connected to outside the motor casing through the cable, motor three phase power cord connects stator winding through power cable chamber. This mounting structure effectively reduces the electromagnetic interference who becomes and the temperature signal line soon to accurate collection becomes and temperature signal data soon, accurate control motor operation, and the installation and debugging of being convenient for, reduction in production cost.
Description
Technical Field
The utility model relates to a new energy automobile electricity drives technical field of system, especially relates to a motor revolves becomes and mounting structure of temperature signal line EMI wave filter.
Background
With the development of new energy automobiles, the requirements of the new energy automobiles on electromagnetic compatibility (EMC) are more and more stringent, and with the formal implementation of the requirements on electromagnetic compatibility of the driving motor systems for electric automobiles and the test method (GB/T36282-. For a permanent magnet synchronous drive motor system, the common mode current generated by the motor controller IGBT module is conducted to the motor through the motor U, V, W three-phase power lines, since the resolver and temperature signal lines in the motor are exposed inside the motor, and part of the cables coincide with the motor U, V, W three-phase power lines, such as the temperature signal lines together with thermocouples are directly buried in the motor stator coils. Thus, common-mode interference is inevitably coupled to the rotary transformer and temperature signal lines, and the interference waveform is similar to that of U, V, W three-phase power supply lines. Along with the improvement of the switching speed of the IGBT module, particularly the application of the SiC semiconductor technology, the interference problem generated by the IGBT module is more and more serious, meanwhile, the interference of the motor rotation and the coupling on a temperature signal line is more and more large, even the collection of normal signals can be influenced, the normal and reliable control of the motor is seriously influenced, and certain potential safety hazards exist for new energy automobiles.
Disclosure of Invention
The utility model aims to solve the technical problem that a motor becomes soon and temperature signal line EMI wave filter's mounting structure is provided, this mounting structure effectively reduces the electromagnetic interference who becomes soon and temperature signal line to accurate collection becomes soon and temperature signal data, accurate control motor operation, and the installation and debugging of being convenient for, reduction in production cost.
For solving the technical problem, the utility model discloses motor rotary transformer and temperature signal line EMI wave filter's mounting structure includes motor casing, stator winding, rotor, rotary transformer encoder, thermocouple and EMI wave filter, stator winding and rotor are located respectively in the motor casing, rotary transformer encoder connects the rotor pivot, the thermocouple bury underground in stator winding, be equipped with in the motor casing and extend to the outer signal cable chamber of motor casing and power cable chamber, the EMI wave filter is located signal cable chamber, rotary transformer encoder and thermocouple signal line get into signal cable chamber connects the input of EMI wave filter, EMI wave filter output is connected to through the cable outside the motor casing, motor three phase power cord warp the power cable chamber is connected the stator winding.
Further, the signal cable cavity and the power cable cavity are the same cavity, and the rotary encoder and the thermocouple signal wires are arranged in a layered mode with the three-phase power line of the motor.
Furthermore, the mounting structure also comprises a metal isolation rib plate which is arranged in the same cavity and separates the rotary encoder and the thermocouple signal wire from the three-phase power line of the motor.
Further, the EMI filter is a filter circuit board comprising a capacitor and an inductor filter element, and the filter circuit board is connected with the rotary encoder and the thermocouple signal wire through a connector.
Further, the grounding end of the filter circuit board is connected with the motor shell.
Further, the EMI filter is a ferrite magnetic ring or a nanocrystalline magnetic ring, and the rotary encoder and the thermocouple signal wire penetrate through or are wound on the ferrite magnetic ring or the nanocrystalline magnetic ring.
Because the utility model discloses motor rotary transformer and temperature signal line EMI wave filter's mounting structure has adopted above-mentioned technical scheme, promptly this structure includes motor casing, stator winding, the rotor, rotary transformer encoder, thermocouple and EMI wave filter, stator winding and rotor are located in the motor casing respectively, rotary transformer encoder connects the rotor pivot, the thermocouple is buried underground in stator winding, be equipped with in the motor casing and extend to the outer signal cable chamber of motor casing and power cable chamber, signal cable chamber is located to the EMI wave filter, rotary transformer encoder and thermocouple signal line entering signal cable chamber and connect the input of EMI wave filter, EMI wave filter output is connected to outside the motor casing through the cable, motor three-phase power cord is through power cable chamber connection stator winding. This mounting structure effectively reduces the electromagnetic interference who becomes and the temperature signal line soon to accurate collection becomes and temperature signal data soon, accurate control motor operation, and the installation and debugging of being convenient for, reduction in production cost.
Drawings
The invention will be described in further detail with reference to the following drawings and embodiments:
Fig. 1 is the utility model discloses the motor revolves becomes and temperature signal line EMI wave filter's mounting structure sketch map.
Detailed Description
Embodiment as shown in fig. 1, the installation structure of the motor rotary transformer and temperature signal line EMI filter of the present invention comprises a motor housing 1, a stator winding 2, a rotor 3, a rotary transformer encoder 4, an EMI filter 5 and a thermocouple 6, the stator winding 2 and the rotor 3 are respectively arranged in the motor shell 1, the rotary encoder 4 is connected with a rotating shaft of the rotor 3, the thermocouple 6 is embedded in the stator winding 2, a signal cable cavity 11 and a power cable cavity 12 which extend to the outside of the motor shell 1 are arranged in the motor shell 1, the EMI filter 5 is arranged in the signal cable cavity 11, the signal wires of the rotary encoder 4 and the thermocouple 6 enter the signal cable cavity 11 and are connected with the input end of the EMI filter 5, the output end of the EMI filter 5 is connected to the outside of the motor shell 1 through a cable, and a three-phase power line 13 of the motor is connected with the stator winding 2 through the power cable cavity 12.
Preferably, the signal cable cavity 11 and the power cable cavity 12 are the same cavity, and the signal wires of the rotary encoder 4 and the thermocouple 6 and the three-phase power wire 13 of the motor are arranged in layers.
Preferably, the mounting structure further comprises a metal isolation rib plate (not shown in the figure), and the metal isolation rib plate is arranged in the same cavity and separates the signal wires of the rotary encoder 4 and the thermocouple 6 from the three-phase power wire 13 of the motor.
Preferably, the EMI filter 5 is a filter circuit board including capacitive and inductive filter elements, and the filter circuit board is connected to the signal lines of the rotary encoder 4 and the thermocouple 6 through connectors.
Preferably, the ground terminal of the filter circuit board is connected to the motor housing 1.
Preferably, the EMI filter 5 is a ferrite magnetic ring or a nanocrystal magnetic ring, and the signal wires of the rotary encoder 4 and the thermocouple 6 pass through or are wound around the ferrite magnetic ring or the nanocrystal magnetic ring.
When the mounting structure is practically applied, firstly, a motor stator, a rotor and a rotary encoder are mounted according to the process requirements, meanwhile, when the stator is mounted, a thermocouple and a signal wire are embedded in a stator winding, insulation is needed to be made during mounting, short circuit is avoided, and then the thermocouple signal wire is led to a signal cable cavity; when the rotor is installed, a signal wire of the rotary encoder needs to be just placed in a signal cable cavity; when the EMI filter is installed, attention needs to be paid to fixing and grounding, the EMI filter can be composed of a filter circuit board, a ferrite magnetic ring or a nanocrystalline magnetic ring, the filter circuit board achieves a filtering effect by combining and matching filter elements such as a capacitor and an inductor, and the filter circuit board is connected with signal wires of a rotary encoder and a thermocouple through a connector; the ferrite magnetic ring or the nanocrystalline magnetic ring achieves the filtering effect through different magnetic ring characteristics and winding turns.
The signal cable chamber and the power cable chamber in the mounting structure can be two completely independent chambers, and can also be combined into a large chamber, wherein the rotary encoder and the thermocouple signal line are separately wired with the three-phase power line of the motor, or the rotary encoder and the thermocouple signal line are isolated from the three-phase power line of the motor by adopting the metal isolation rib plate, thereby avoiding the interference of signals.
Because the characteristics of the IGBT module determine that interference is not easily and completely inhibited only at the source control end, the structure solves the interference problem for the rotary transformer and the temperature signal wire from the motor end. The installation structure is beneficial to reducing EMI interference on the rotary transformer and the temperature signal wire, so that signal data can be more accurately collected, the operation of the motor can be accurately and reliably controlled, and potential safety hazards caused by signal interference are avoided; the structure is convenient to install and debug, and is convenient for mass production and large-scale application; under the condition that the rotary transformer and the temperature signal wire reach the same EMC technical grade, the structure has lower cost.
Claims (6)
1. The utility model provides a motor is revolved and is become and mounting structure of temperature signal line EMI wave filter, includes motor casing, stator winding, rotor, revolves and becomes encoder, thermocouple and EMI wave filter, stator winding and rotor are located respectively in the motor casing, it connects to revolve and becomes the encoder the rotor pivot, the thermocouple is buried underground in stator winding, its characterized in that: the motor comprises a motor shell, and is characterized in that a signal cable cavity and a power cable cavity which extend out of the motor shell are arranged in the motor shell, the EMI filter is arranged in the signal cable cavity, rotary encoder and thermocouple signal wires enter the signal cable cavity and are connected with the input end of the EMI filter, the output end of the EMI filter is connected out of the motor shell through a cable, and a three-phase power wire of the motor is connected with the stator winding through the power cable cavity.
2. The mounting structure of the motor resolver and temperature signal line EMI filter according to claim 1, wherein: the signal cable cavity and the power cable cavity are the same cavity, and the rotary encoder and the thermocouple signal wires are arranged in a layered mode with the three-phase power line of the motor.
3. The mounting structure of the motor resolver and temperature signal line EMI filter according to claim 2, wherein: the mounting structure further comprises a metal isolation rib plate, wherein the metal isolation rib plate is arranged in the same cavity and separates the rotary encoder and the thermocouple signal wire from the three-phase power line of the motor.
4. The mounting structure of the motor resolver and temperature signal line EMI filter according to claim 1, 2, or 3, wherein: the EMI filter is a filter circuit board comprising a capacitor and an inductance filter element, and the filter circuit board is connected with the rotary encoder and the thermocouple signal wire through a connector.
5. The mounting structure of the motor resolver and temperature signal line EMI filter according to claim 4, wherein: and the grounding end of the filter circuit board is connected with the motor shell.
6. The mounting structure of the motor resolver and temperature signal line EMI filter according to claim 1, 2, or 3, wherein: the EMI filter is a ferrite magnetic ring or a nanocrystalline magnetic ring, and the rotary encoder and the thermocouple signal wire penetrate through or are wound on the ferrite magnetic ring or the nanocrystalline magnetic ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920730821.9U CN209805612U (en) | 2019-05-21 | 2019-05-21 | Mounting structure of motor rotary transformer and temperature signal line EMI filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920730821.9U CN209805612U (en) | 2019-05-21 | 2019-05-21 | Mounting structure of motor rotary transformer and temperature signal line EMI filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209805612U true CN209805612U (en) | 2019-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920730821.9U Active CN209805612U (en) | 2019-05-21 | 2019-05-21 | Mounting structure of motor rotary transformer and temperature signal line EMI filter |
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| Country | Link |
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| CN (1) | CN209805612U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113824268A (en) * | 2020-06-16 | 2021-12-21 | 沃尔沃汽车公司 | Electromagnetic radiation suppression filter in hybrid/electric vehicle |
| US11711003B2 (en) * | 2019-05-31 | 2023-07-25 | MagniX USA, Inc. | High voltage converter for use as electric power supply |
-
2019
- 2019-05-21 CN CN201920730821.9U patent/CN209805612U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11711003B2 (en) * | 2019-05-31 | 2023-07-25 | MagniX USA, Inc. | High voltage converter for use as electric power supply |
| CN113824268A (en) * | 2020-06-16 | 2021-12-21 | 沃尔沃汽车公司 | Electromagnetic radiation suppression filter in hybrid/electric vehicle |
| EP3926813A1 (en) * | 2020-06-16 | 2021-12-22 | Volvo Car Corporation | Electromagnetic emission rejection filter in hybrid/electric vehicles |
| US11552556B2 (en) * | 2020-06-16 | 2023-01-10 | Volvo Car Corporation | Electromagnetic emission rejection filter in hybrid/electric vehicles |
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