CN202066912U - Device for monitoring resistance and temperature for winding of synchronous motor - Google Patents
Device for monitoring resistance and temperature for winding of synchronous motor Download PDFInfo
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- CN202066912U CN202066912U CN2011200657655U CN201120065765U CN202066912U CN 202066912 U CN202066912 U CN 202066912U CN 2011200657655 U CN2011200657655 U CN 2011200657655U CN 201120065765 U CN201120065765 U CN 201120065765U CN 202066912 U CN202066912 U CN 202066912U
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- sensor
- synchronous motor
- current sensor
- winding
- controller
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- 238000004804 winding Methods 0.000 title claims abstract description 34
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 32
- 238000012544 monitoring process Methods 0.000 title abstract description 3
- 238000005065 mining Methods 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
A device for monitoring resistance and temperature for a winding of a synchronous motor is suitable for a synchronous motor used in the production for industrial and mining enterprises. The device comprises an AC sensor, a signal output device, a controller, a DC voltage sensor and a DC current sensor, wherein the AC sensor is arranged between a triphase AC power supply and the stator winding of the synchronous motor; the DC voltage sensor is connected in parallel with two DC buses of a DC supply and the rotor winding of the synchronous motor; the DC current sensor is connected in series with one DC bus of the DC supply and the rotor winding of the synchronous motor; the data acquisition output ends of the AC sensor, the DC voltage sensor, and the DC current sensor are connected to the input end of the controller respectively; and the output end of the controller is connected with the input end of the signal output device. The device excludes a mechanical temperature sensor, equipment loss is avoided, the data is processed y the controller and is sent out by the signal output device, the structure is simple, and the use is convenient.
Description
Technical field
The utility model relates to a kind of pick-up unit, is particularly useful for synchronous motor uses in industrial and mining enterprises' production synchronous motor winding resistance and device for detecting temperature.
Background technology
The temperature of motor directly influences the life-span and the serviceability of motor, so the temperature monitoring of motor seems especially important.At present, common temperature-detecting device mainly adopts the mechanical temperature sensor, promptly utilizes the temperature sensor that is embedded in motor internal to measure motor temperature.This device needs the mechanical temperature sensor, and they exist sensor that difficulty is installed, problems such as machinery and fault, reliability are not high appear in maintenance workload greatly, easily.
In addition, in the synchronous machine drives control system, no matter be that Direct Torque Control or vector controlled all need to estimate magnetic linkage by stator resistance.But stator resistance can change along with variation of temperature, thereby can accurately not estimate magnetic linkage, influences the control system performance, and severe patient can cause the decoupling zero failure that total system is played pendulum.Therefore, being badly in need of a kind of resistance and device for detecting temperature that does not have mechanical temperature sensor controls synchronous motor.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, and is safe and reliable, easy for installation, do not have the synchronous motor winding resistance and the device for detecting temperature of mechanical temperature sensor.
For achieving the above object, synchronous motor winding resistance of the present utility model and device for detecting temperature, it comprises AC current sensor, signal output apparatus, controller, DC voltage sensor and DC current sensor, AC current sensor is located between three-phase alternating-current supply and the synchronous motor stator winding, the DC voltage sensor is connected in parallel on two dc buss of direct supply and synchronous electric motor rotor winding, DC current sensor is connected on the dc bus of direct supply and synchronous electric motor rotor winding, AC current sensor, the data acquisition output terminal of DC voltage sensor and DC current sensor is connected the input end of controller respectively, and the output terminal of controller connects the input end of signal output apparatus.
Technological merit: the utility model does not comprise the mechanical temperature sensor, easy for installation, and avoided the loss of equipment, use the controller deal with data and data transmission is come out by signal output apparatus, simple in structure, easy to use, simplify the hardware configuration of synchronous motor supervisory system, improved the reliability and the accuracy of system.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model
Among the figure: 1-three-phase alternating-current supply, 2-AC current sensor, 3-signal output apparatus, 4-controller, the 5-direct supply, 6-DC voltage sensor, 7-DC current sensor, 8-synchronous motor stator winding, the 9-synchronous motor stator, 10-synchronous electric motor rotor, 11-synchronous electric motor rotor winding.
Embodiment
Below in conjunction with accompanying drawing an embodiment of the present utility model is further described
As shown in Figure 1, the utility model comprises AC current sensor 2, signal output apparatus 3, controller 4, DC voltage sensor 6 and DC current sensor 7.AC current sensor 2 is located between three-phase alternating-current supply 1 and the synchronous motor stator winding 8, and the electric current on the synchronous motor stator winding 8 detected, DC voltage sensor 6 is connected in parallel on two dc buss of direct supply 5 and synchronous electric motor rotor winding 11, DC current sensor 7 is connected on the dc bus of direct supply 5 and synchronous electric motor rotor winding 11, AC current sensor 2 and DC current sensor 7 are Hall current sensor, DC voltage sensor 6 is the Hall voltage sensor, wherein current sensor adopts the MP type, the EL type, the EH type, ES type or HKA potline current sensor, voltage sensor adopts the EM type, A-VSM series, HV series, LV series or HNV series voltage sensor.DC voltage sensor 6 and DC current sensor 7 detect the voltage and current of synchronous electric motor rotor winding 11 respectively, AC current sensor 2, DC voltage sensor 6 and the data acquisition output terminal of DC current sensor 7 are connected the input end of controller 4 respectively, to detect data sends in the controller 4 and handles, controller 4 is that DSP is integrated, controller 4 utilizes the rotor winding voltage and the galvanometer that collect to calculate the resistance value of synchronous electric motor rotor winding 11, according to the formula of rotor winding resistance and temperature, calculate the temperature of synchronous electric motor rotor winding 11; Calculate the copper loss of synchronous motor stator winding 8 and synchronous electric motor rotor winding 11 according to the stator that collects and rotor current, the temperature that calculates motor stator winding 8 according to the temperature and the rotor winding copper loss of synchronous electric motor rotor winding 11 then, according to the relation of stator winding resistance and temperature, calculate the resistance value of synchronous motor stator winding 8 at last; Controller 4 is exported the master control system use that shows or pass to motor with temperature and resistance signal that processing draws by signal output apparatus 3.
Claims (1)
1. synchronous motor winding resistance and device for detecting temperature, it is characterized in that: it comprises AC current sensor (2), signal output apparatus (3), controller (4), DC voltage sensor (6) and DC current sensor (7), wherein: AC current sensor (2) is located between three-phase alternating-current supply (1) and the synchronous motor stator winding (8), DC voltage sensor (6) is connected in parallel on two dc buss of direct supply (5) and synchronous electric motor rotor winding (11), DC current sensor (7) is connected on the dc bus of direct supply (5) and synchronous electric motor rotor winding (11), AC current sensor (2), DC voltage sensor (6) and the data acquisition output terminal of DC current sensor (7) are connected the input end of controller (4) respectively, and the output terminal of controller (4) connects the input end of signal output apparatus (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200657655U CN202066912U (en) | 2011-03-15 | 2011-03-15 | Device for monitoring resistance and temperature for winding of synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200657655U CN202066912U (en) | 2011-03-15 | 2011-03-15 | Device for monitoring resistance and temperature for winding of synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202066912U true CN202066912U (en) | 2011-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200657655U Expired - Fee Related CN202066912U (en) | 2011-03-15 | 2011-03-15 | Device for monitoring resistance and temperature for winding of synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202066912U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376362A (en) * | 2012-04-25 | 2013-10-30 | 珠海格力电器股份有限公司 | Method and device for detecting resistance value and commutation position of reluctance motor winding |
| CN103913636A (en) * | 2013-01-06 | 2014-07-09 | 珠海格力电器股份有限公司 | Method, device and system for obtaining motor resistance parameters |
| CN105158721A (en) * | 2015-07-21 | 2015-12-16 | 珠海许继电气有限公司 | Voltage transformer temperature online monitoring device and method |
| CN106872895A (en) * | 2017-04-25 | 2017-06-20 | 天津工业大学 | A kind of switched reluctance motor flux linkage characteristic detection means and detection method |
| US10955491B2 (en) | 2015-10-30 | 2021-03-23 | Landis+Gyr, Inc. | Method for detecting a meter maintenance condition using winding resistance |
-
2011
- 2011-03-15 CN CN2011200657655U patent/CN202066912U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376362A (en) * | 2012-04-25 | 2013-10-30 | 珠海格力电器股份有限公司 | Method and device for detecting resistance value and commutation position of reluctance motor winding |
| CN103913636A (en) * | 2013-01-06 | 2014-07-09 | 珠海格力电器股份有限公司 | Method, device and system for obtaining motor resistance parameters |
| CN103913636B (en) * | 2013-01-06 | 2016-08-24 | 珠海格力电器股份有限公司 | Method, device and system for obtaining motor resistance parameters |
| CN105158721A (en) * | 2015-07-21 | 2015-12-16 | 珠海许继电气有限公司 | Voltage transformer temperature online monitoring device and method |
| CN105158721B (en) * | 2015-07-21 | 2018-01-02 | 珠海许继电气有限公司 | A kind of voltage transformer temperature on-line monitoring device and method |
| US10955491B2 (en) | 2015-10-30 | 2021-03-23 | Landis+Gyr, Inc. | Method for detecting a meter maintenance condition using winding resistance |
| CN106872895A (en) * | 2017-04-25 | 2017-06-20 | 天津工业大学 | A kind of switched reluctance motor flux linkage characteristic detection means and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20140315 |