CN201607510U - Motor fault detecting equipment and system - Google Patents
Motor fault detecting equipment and system Download PDFInfo
- Publication number
- CN201607510U CN201607510U CN2009203507826U CN200920350782U CN201607510U CN 201607510 U CN201607510 U CN 201607510U CN 2009203507826 U CN2009203507826 U CN 2009203507826U CN 200920350782 U CN200920350782 U CN 200920350782U CN 201607510 U CN201607510 U CN 201607510U
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- checkout equipment
- electrical fault
- resistance
- master controller
- generator windings
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Abstract
The utility model discloses motor fault detecting equipment and a system which are used for realizing multifunctional detection on a DC resistor and an insulating resistor of a generator winding. The motor fault detecting equipment comprises an operation keyboard (100), a main controller chip (101), a constant-current power supply (102), a high-voltage power supply (103), a signal collecting module (104), a digital-to-analog converter (105), a display circuit (106) and a display screen (107). By integrating data collection and fault diagnosis, the motor fault detecting equipment is a total solution to the electromagnetic characteristic detection of the motor.
Description
Technical field
The utility model relates to motor detection technique field, relates in particular to a kind of electrical fault checkout equipment and system.
Background technology
Electric energy is one of most important energy of modern society.Generator is the equipment that the energy conversion of other form is become electric energy, the principle of work of generator is based on the law of electromagnetic induction and electromagnetic force law, constitute magnetic circuit and the circuit that carries out electromagnetic induction mutually by suitable magnetic conduction and conductive material,, reach the purpose of energy conversion to produce electromagnetic power.Generator is made of parts such as stator, rotor, end cap and bearings usually, is coupled together by bearing and end cap stator and the rotor with generator, and rotor is rotated in stator, make cutting magnetic line movement, thereby the generation induced potential is drawn out in the loop by connection terminal, has just produced electric current.Wherein, stator body, stator winding (or coil), rotor body and rotor winding (or coil) are formed the basic electrical structure of generator.
In the operational process of generator, most faults come from generator windings (comprising stator winding and rotor winding), therefore the various misoperations of generator also very easily produce destroying infection to generator windings, and the effective detection to the electric fault of generator windings is significant to the safety and stability power supply of system.In the prior art, generally adopt the direct current resistance detector that the direct current resistance of generator windings is detected, adopt insulation resistance detector (megohmmeter) that the insulation resistance of generator windings is detected, with the electric fault of location generator windings, the power supply of the safety and stability of maintenance system.
The utility model content
The utility model provides a kind of electrical fault checkout equipment and system, in order to realize the multi-functional detection to the direct current resistance and the insulation resistance of generator windings.
The electrical fault checkout equipment that the utility model provides, comprise: operation keyboard (100), master controller chip (101), constant-current supply (102), high-voltage power supply (103), signal acquisition module (104), digital-to-analog A/D converter (105), display circuit (106) and display screen (107), wherein:
Master controller chip (101), be used for the detection incident that supervisory user triggers by operation keyboard (100), when the detection incident detects incident for measuring first of direct current resistance, the opening and closing of control constant-current supply (102) are to finish the charging to tested generator windings, and control signal acquisition module (104) is gathered the direct current resistance signal after tested generator windings charging is finished; When the detection incident is the second detection incident of measurement insulation resistance, control signal acquisition module (104) is gathered the insulation resistance signal, and control high-voltage power supply (103) is opened tested generator windings is charged the high-voltage charging resistance signal of control signal acquisition module (104) collection setting-up time point in to tested generator windings charging process; And when dc resistance that receives A/D converter (105) output or insulating resistance value, trigger display circuit (106), when the high-voltage charging resistance value of the setting-up time point that receives A/D converter (105) output, determine the insulation resistance parameter and trigger display circuit (106);
Signal acquisition module (104), be used under the control of master controller chip (101), the direct current resistance signal of the tested generator windings of finishing by first interface collection charging is gathered the insulation resistance signal of tested generator windings and the high-voltage charging resistance signal of setting-up time point by second interface;
A/D converter (105), the high-voltage charging resistance signal that is used for direct current resistance signal, insulation resistance signal and setting-up time point that signal acquisition module (104) is collected carries out analog to digital conversion, obtains the high-voltage charging resistance value of dc resistance, insulating resistance value and setting-up time point respectively;
Display circuit (106) is used under the triggering of master controller chip (101), and control display screen (107) shows the testing result of tested generator windings.
Preferable, this electrical fault checkout equipment also comprises:
Crowbar circuit (108) is used for after the first detection incident is finished the electrical fault checkout equipment being carried out extinguishing arc.
In order to realize and the communicating by letter of host computer that this electrical fault checkout equipment also comprises data-interface (109), wherein:
Master controller chip (101) also is used for communicating by data-interface (109) and host computer, reports the testing result of tested generator windings.
Preferable, this electrical fault checkout equipment also comprises sound light alarming circuit (110), wherein:
Master controller chip (101) also is used for triggering sound light alarming circuit (110) when testing result satisfies the alert if of setting;
Sound light alarming circuit (110) is used for sending acoustic alarm signal and visual alarm under the triggering of master controller chip (101).
Preferable, this electrical fault checkout equipment also comprises warm and humid sensor (111), wherein:
Master controller chip (101) also is used for when monitoring the detection incident, the warm and humid sensor of synchronous triggering (111);
Warm and humid sensor (111), be used under the triggering of master controller chip (101), the ambient temperature value and the ambient humidity value that obtain to master controller chip (101) return measurement are so that show described ambient temperature value and ambient humidity value in the testing result that shows tested generator windings.
Preferable, this electrical fault checkout equipment also comprises:
Storer (112) is used to store the testing result of tested generator windings.
The utility model provides a kind of electrical fault detection system, comprise above-mentioned electrical fault checkout equipment (10) and host computer (20), electrical fault checkout equipment (10) has data-interface (109), the data-interface (109) of electrical fault checkout equipment (10) links to each other with the data-interface (200) of host computer (20) by data line, wherein:
Described host computer (20) is used to receive the testing result of the tested generator windings that electrical fault checkout equipment (10) reports, and described testing result is carried out intellectual analysis, locatees the position of tested generator generation electric fault and the reason that causes electric fault.
The electrical fault checkout equipment that the utility model provides, integrate data acquisition and fault diagnosis, it is the total solution of motor electromagnetic Characteristics Detection, but bearing fault, stator failure and rotor fault under comprehensive diagnostic empty load of motor, underloading and the fully loaded three kinds of running statuses thoroughly replace equipment such as multimeter, megohmmeter, electric bridge, turn-to-turn short circuit experiment instrument and amperometry instrument.The electrical fault checkout equipment that the utility model embodiment provides adopts advanced constant-current supply technology, greatly reduces volume, weight and the power consumption of equipment, has shortened Measuring Time, has guaranteed the reliability of measurement result.
The electrical fault detection system based on the electrical fault checkout equipment that the utility model provides can accurately be located the electric fault of generator, for malfunction elimination lays the first stone, thereby in time, effectively avoids the generation of potential safety hazard.
Other features and advantages of the utility model will be set forth in the following description, and, partly from instructions, become apparent, perhaps understand by implementing the utility model.The purpose of this utility model and other advantages can realize and obtain by specifically noted structure in the instructions of being write, claims and accompanying drawing.
Description of drawings
The structural representation of the electrical fault checkout equipment that Fig. 1 provides for the utility model embodiment;
The structured flowchart of the electrical fault detection system that Fig. 2 provides for the utility model embodiment.
Embodiment
The utility model aims to provide a kind of electrical fault checkout equipment and system, in order to realize multi-functional detection to the direct current resistance and the insulation resistance of generator windings, thereby promote the convenience of location generator windings electric fault, the effectively safety and stability of maintenance system power supply.
Below in conjunction with Figure of description preferred embodiment of the present utility model is described, be to be understood that, preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in qualification the utility model, and under the situation of not conflicting, embodiment and the feature among the embodiment in the utility model can make up mutually.
The direct current resistance that detects generator windings is for the quality that detects generator windings (or coil) and the integrality in loop, with find to make or equipment running process in the wire fracture, the joint that cause snap, defectives such as loose contact, turn-to-turn short circuit.Mainly comprise following several testing goals:
Detect the welding quality of generator windings inner lead and lead-in wire;
Detect generator windings or lead-in wire and have or not the place that fractures;
Detect the correctness of parallel branch, whether have the situation that a place or a few place broken string take place by the winding of several parallel conducting wire coileds.
The direct current resistance measurement of generator windings comprises the detection incident (being called the first detection incident for the ease of differentiation) of following measurement direct current resistance:
1, UV phase direct current resistance test, corresponding detection result is a UV phase dc resistance;
2, VW phase direct current resistance test, corresponding detection result is a VW phase dc resistance;
3, WU phase direct current resistance test, corresponding detection result is a WU phase dc resistance.
The insulation resistance that detects generator windings is in order to detect the state of insulation of generator windings (or coil), and with the foreign matter of finding that influence is apparatus insulated, insulator part or integral body are made moist and is dirty, the serious deterioration of insulating oil, defectives such as insulation breakdown and serious heat ageing.Mainly comprise following several testing goals:
Detect insulating resistance value, can find that insulation is seriously made moist, dirty and perfoliate insulation defect;
Measure insulation absorptance and insulation polarization index, can judge the degree of making moist of insulation.
The insulation measurement of generator windings comprises the detection incident (being called the second detection incident for the ease of differentiation) of following measurement insulation resistance:
1, phase insulation resistance test, corresponding detection result are phase insulation resistance value, phase insulation absorptance (R
60s/ R
15s, the ratio of the alternate high-voltage charging resistance value of 60s and 15s phase insulation resistance value) and phase insulation polarization index (R
600s/ R
60sThe ratio of 600s phase insulation resistance value and 60s phase insulation resistance value), described phase insulation resistance specifically is divided into UV phase insulation resistance, VW phase insulation resistance and WU phase insulation resistance, i.e. concrete corresponding three the detection incidents of phase insulation resistance test;
2, with the casing megger test, corresponding detection result be with the casing insulating resistance value, with casing insulation absorptance (R
60s/ R
15s) with casing insulation polarization index (R
600s/ R
60s), describedly specifically be divided into U and casing insulation resistance, V and casing insulation resistance and W and casing insulation resistance, promptly with concrete corresponding three the detection incidents of casing megger test with the casing insulation resistance;
3, field coil and casing megger test, corresponding detection result are field coil and casing insulating resistance value, field coil and casing insulation absorptance (R
60s/ R
15s) and field coil and casing insulation polarization index (R
600s/ R
60s), described field coil specifically is divided into U phase excitation coil and casing insulation resistance, V phase excitation coil and casing insulation resistance and W field coil and casing insulation resistance with the casing insulation resistance, i.e. field coil and concrete corresponding three the detection incidents of casing megger test.
The utility model embodiment provides a kind of electrical fault checkout equipment, and electrical fault checkout equipment self can adopt two kinds of power supply modes: a kind of 220V of being Alternating Current Power Supply, another kind are accumulator direct current supply.As shown in Figure 1, the electrical fault checkout equipment comprises operation keyboard (100), master controller chip (101), constant-current supply (102), high-voltage power supply (103), signal acquisition module (104), A/D (digital-to-analog) converter (105), display circuit (106) and display screen (107).In concrete the enforcement, the magnitude of voltage that high-voltage power supply (103) provides is generally 1000V, and the current value that constant-current supply (102) provides is generally 2A.Wherein:
Master controller chip (101), be used for the detection incident that supervisory user triggers by operation keyboard (100), when the detection incident detects incident for measuring first of direct current resistance, the opening and closing of control constant-current supply (102) are to finish the charging to tested generator windings, and control signal acquisition module (104) is gathered the direct current resistance signal after tested generator windings charging is finished; When the detection incident is the second detection incident of measurement insulation resistance, control signal acquisition module (104) is gathered the insulation resistance signal, and the unlatching of control high-voltage power supply (103) is to charge the high-voltage charging resistance signal of control signal acquisition module (104) collection setting-up time point in to tested generator windings charging process to tested generator windings; And when dc resistance that receives A/D converter (105) output or insulating resistance value, trigger display circuit (106), when the high-voltage charging resistance value of the setting-up time point that receives A/D converter (105) output, determine the insulation resistance parameter and trigger display circuit (106);
The insulation resistance parameter comprises the insulation absorptance and the polarization index that insulate (specifically be divided into alternate, with casing, field coil and three kinds of situations of casing) in concrete the enforcement, if the second detection incident is the phase insulation resistance test, then the high-voltage charging resistance value of setting-up time point is generally chosen the 15th second phase insulation resistance value R in the phase insulation resistance test
15s, the 60th second high-voltage charging resistance value R
60sHigh-voltage charging resistance value R with the 600th second
600s, the phase insulation absorptance is passed through R
60s/ R
15sDetermine that the phase insulation polarization index is passed through R
600s/ R
60sDetermine;
Signal acquisition module (104), be used under the control of master controller chip (101), the direct current resistance signal of the tested generator windings of finishing by first interface collection charging is perhaps gathered the insulation resistance signal of tested generator windings and the high-voltage charging resistance signal of setting-up time point by second interface;
A/D converter (105), the high-voltage charging resistance signal that is used for direct current resistance signal, insulation resistance signal and setting-up time point that signal acquisition module (104) is collected carries out analog to digital conversion, obtains the high-voltage charging resistance value of dc resistance, insulating resistance value and setting-up time point;
Display circuit (106) is used under the triggering of master controller chip (101), and control display screen (107) shows the testing result of tested generator windings.
Need to prove, before beginning, insulation measurement should remove power supply and all external lines of tested generator, and with the tested generator ground connection 1min (generator that electric capacity is bigger should discharge at least 2min) that discharges at least, to avoid getting an electric shock and to promote the accuracy of testing result.
After the direct current resistance measurement is finished, need carry out extinguishing arc to the electrical fault checkout equipment, preferable, this electrical fault checkout equipment also comprises crowbar circuit (108), be used for after the first detection incident measurement of direct current resistance (promptly to) is finished, the electrical fault checkout equipment being carried out extinguishing arc.Extinguishing arc is in order to prevent electric leakage or overvoltage, can effectively to protect the electrical fault checkout equipment, improving the safety in operation and the power supply reliability of electrical fault checkout equipment.In concrete the enforcement, need at least 30 seconds the extinguishing arc time of assurance just can reach the purpose of complete extinguishing arc.
The electrical fault checkout equipment can also communicate above inspection declaration with host computer and survey the result, testing result is carried out processing such as Fourier transform, auto adapted filtering, short time discrete Fourier transform by host computer, represents testing result with forms such as figure, forms.Because the complicacy that electrical fault detects, the electrical fault checkout equipment realizes that in conjunction with host computer the accurate location of motor electric fault is most important, and host computer is by to the position of intellectual analysis (result who comprises frequency spectrum, waveform, phenomenon of the failure) the location generation electric fault of testing result and the reason etc. that causes electric fault.In order to make the concrete communication function of electrical fault checkout equipment, realization is communicated by letter with host computer, and this electrical fault checkout equipment also comprises data-interface (109), wherein:
Master controller chip (101) communicates by data-interface (109) and host computer, reports the testing result of tested generator windings.
In concrete the enforcement, described data-interface can be RS232 interface or USB (UniversalSerial Bus, USB (universal serial bus)) interface.
In concrete the enforcement, for improving safety, the electrical fault checkout equipment also possesses sound and light of alarm, so that in time report to the police when generator breaks down detecting, then described electrical fault checkout equipment also comprises sound light alarming circuit (110), wherein:
Master controller chip (101) also is used for triggering sound light alarming circuit (110) when testing result satisfies the alert if of setting;
Sound light alarming circuit (110) is used for sending acoustic alarm signal and visual alarm under the triggering of master controller chip (101).
Can also set the fault rank in concrete the enforcement, the fault of different stage triggers different sound and light alarm signals, for example fault slightly then hummer ring one and the diode pilot lamp glimmers with yellow, fault seriously then hummer send continuous ticking and the diode pilot lamp glimmers with redness.
In concrete the enforcement, the electrical fault checkout equipment also can possess the humiture measuring ability simultaneously, and this electrical fault checkout equipment also can comprise warm and humid sensor (111), wherein:
Master controller chip (101) also is used for when monitoring the detection incident, the warm and humid sensor of synchronous triggering (111);
Warm and humid sensor (111), be used under the triggering of master controller chip (101), the ambient temperature value and the ambient humidity value that obtain to master controller chip (101) return measurement are so that show ambient temperature value and the ambient humidity value that measures in the testing result that shows tested generator windings.
Preferable, this electrical fault checkout equipment also comprises storer (112), is used to store the testing result of tested generator windings, in order to user inquiring.
Concrete, storer (112) can adopt SRAM (Static Random Access Memory, static RAM), DRAM (dynamic RAM, Dynamic RAM) etc.
The electrical fault checkout equipment that the utility model embodiment provides, integrate data acquisition and fault diagnosis, it is the total solution of motor electromagnetic Characteristics Detection, but bearing fault, stator failure and rotor fault under comprehensive diagnostic empty load of motor, underloading and the fully loaded three kinds of running statuses thoroughly replace equipment such as multimeter, megohmmeter, electric bridge, turn-to-turn short circuit experiment instrument and amperometry instrument;
The electrical fault checkout equipment that the utility model embodiment provides adopts advanced constant-current supply technology, greatly reduces volume, weight and the power consumption of equipment, has shortened Measuring Time, has guaranteed the reliability of measurement result;
The electrical fault checkout equipment that the utility model embodiment provides provides RS-232 communication interface and usb communication interface, can make things convenient for host computer and communicate by letter.
On the basis of above-mentioned electrical fault checkout equipment, the utility model embodiment provides a kind of electrical fault detection system simultaneously, as shown in Figure 2, comprise electrical fault checkout equipment (10) and host computer (20), electrical fault checkout equipment (10) has data-interface (109), the data-interface (109) of electrical fault checkout equipment (10) links to each other with the data-interface (200) of host computer (20) by data line, concrete, data-interface (109) and data-interface (200) can adopt RS232 interface, USB interface etc.Wherein:
Host computer (20) is used to receive the testing result of the tested generator windings that electrical fault checkout equipment (10) reports, and this testing result is carried out intellectual analysis, locatees the position of tested generator generation electric fault and the reason that causes electric fault.
The electrical fault detection system based on the electrical fault checkout equipment that the utility model embodiment provides can accurately be located the electric fault of generator, for malfunction elimination lays the first stone, thereby in time, effectively avoids the generation of potential safety hazard.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (7)
1. electrical fault checkout equipment, it is characterized in that, comprise: operation keyboard (100), master controller chip (101), constant-current supply (102), high-voltage power supply (103), signal acquisition module (104), digital-to-analog A/D converter (105), display circuit (106) and display screen (107), wherein:
Master controller chip (101), be used for the detection incident that supervisory user triggers by operation keyboard (100), when the detection incident detects incident for measuring first of direct current resistance, the opening and closing of control constant-current supply (102) are to finish the charging to tested generator windings, and control signal acquisition module (104) is gathered the direct current resistance signal after tested generator windings charging is finished; When the detection incident is the second detection incident of measurement insulation resistance, control signal acquisition module (104) is gathered the insulation resistance signal, and control high-voltage power supply (103) is opened tested generator windings is charged the high-voltage charging resistance signal of control signal acquisition module (104) collection setting-up time point in to tested generator windings charging process; And when dc resistance that receives A/D converter (105) output or insulating resistance value, trigger display circuit (106), when the high-voltage charging resistance value of the setting-up time point that receives A/D converter (105) output, determine the insulation resistance parameter and trigger display circuit (106);
Signal acquisition module (104), be used under the control of master controller chip (101), the direct current resistance signal of the tested generator windings of finishing by first interface collection charging is gathered the insulation resistance signal of tested generator windings and the high-voltage charging resistance signal of setting-up time point by second interface;
A/D converter (105), the high-voltage charging resistance signal that is used for direct current resistance signal, insulation resistance signal and setting-up time point that signal acquisition module (104) is collected carries out analog to digital conversion, obtains the high-voltage charging resistance value of dc resistance, insulating resistance value and setting-up time point respectively;
Display circuit (106) is used under the triggering of master controller chip (101), and control display screen (107) shows the testing result of tested generator windings.
2. electrical fault checkout equipment as claimed in claim 1 is characterized in that, also comprises:
Crowbar circuit (108) is used for after the first detection incident is finished the electrical fault checkout equipment being carried out extinguishing arc.
3. electrical fault checkout equipment as claimed in claim 1 or 2 is characterized in that, also comprises data-interface (109), wherein:
Master controller chip (101) also is used for communicating by data-interface (109) and host computer, reports the testing result of tested generator windings.
4. electrical fault checkout equipment as claimed in claim 1 is characterized in that, also comprises sound light alarming circuit (110), wherein:
Master controller chip (101) also is used for triggering sound light alarming circuit (110) when testing result satisfies the alert if of setting;
Sound light alarming circuit (110) is used for sending acoustic alarm signal and visual alarm under the triggering of master controller chip (101).
5. electrical fault checkout equipment as claimed in claim 1 is characterized in that, also comprises warm and humid sensor (111), wherein:
Master controller chip (101) also is used for when monitoring the detection incident, the warm and humid sensor of synchronous triggering (111);
Warm and humid sensor (111), be used under the triggering of master controller chip (101), the ambient temperature value and the ambient humidity value that obtain to master controller chip (101) return measurement are so that show described ambient temperature value and ambient humidity value in the testing result that shows tested generator windings.
6. electrical fault checkout equipment as claimed in claim 1 is characterized in that, also comprises:
Storer (112) is used to store the testing result of tested generator windings.
7. electrical fault detection system, it is characterized in that, comprise electrical fault checkout equipment as claimed in claim 1 (10) and host computer (20), electrical fault checkout equipment (10) has data-interface (109), the data-interface (109) of electrical fault checkout equipment (10) links to each other with the data-interface (200) of host computer (20) by data line, wherein:
Described host computer (20) is used to receive the testing result of the tested generator windings that electrical fault checkout equipment (10) reports, and described testing result is carried out intellectual analysis, locatees the position of tested generator generation electric fault and the reason that causes electric fault.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203507826U CN201607510U (en) | 2009-12-30 | 2009-12-30 | Motor fault detecting equipment and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203507826U CN201607510U (en) | 2009-12-30 | 2009-12-30 | Motor fault detecting equipment and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201607510U true CN201607510U (en) | 2010-10-13 |
Family
ID=42952215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203507826U Expired - Fee Related CN201607510U (en) | 2009-12-30 | 2009-12-30 | Motor fault detecting equipment and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201607510U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103729907A (en) * | 2014-01-06 | 2014-04-16 | 深圳市兴源智能仪表科技有限公司 | Embedded logic capturing recorder |
| CN105891714A (en) * | 2016-04-20 | 2016-08-24 | 潍坊弗莱瑞电子科技有限公司 | Motor-driven system energy monitoring and fault diagnosis apparatus and implementation method thereof |
| CN106338672A (en) * | 2016-09-26 | 2017-01-18 | 珠海格力电器股份有限公司 | Motor ground fault detection method and system |
| CN106646192A (en) * | 2016-11-25 | 2017-05-10 | 广州周立功单片机科技有限公司 | Self-checking method and system for motor driver hardware |
| CN106771633A (en) * | 2016-12-30 | 2017-05-31 | 易瓦特科技股份公司 | Hand-held instrument for measuring DC resistance |
| CN106771632A (en) * | 2016-12-30 | 2017-05-31 | 易瓦特科技股份公司 | Multi-channel DC resistance meter |
| CN110531258A (en) * | 2019-07-15 | 2019-12-03 | 乌江渡发电厂 | The fault detection method of stator coil in a kind of power plants generating electricity unit |
| CN110855085A (en) * | 2019-12-07 | 2020-02-28 | 湘潭华联电机有限公司 | High-speed motor with rotor fault detection device |
| JP7653978B2 (en) | 2019-09-30 | 2025-03-31 | ルノー エス．ア．エス． | Method for estimating insulation resistance of high voltage circuits in electric or hybrid vehicles |
-
2009
- 2009-12-30 CN CN2009203507826U patent/CN201607510U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103729907A (en) * | 2014-01-06 | 2014-04-16 | 深圳市兴源智能仪表科技有限公司 | Embedded logic capturing recorder |
| CN105891714A (en) * | 2016-04-20 | 2016-08-24 | 潍坊弗莱瑞电子科技有限公司 | Motor-driven system energy monitoring and fault diagnosis apparatus and implementation method thereof |
| CN106338672A (en) * | 2016-09-26 | 2017-01-18 | 珠海格力电器股份有限公司 | Motor ground fault detection method and system |
| CN106338672B (en) * | 2016-09-26 | 2018-02-16 | 珠海格力电器股份有限公司 | Motor ground fault detection method and system |
| CN106646192A (en) * | 2016-11-25 | 2017-05-10 | 广州周立功单片机科技有限公司 | Self-checking method and system for motor driver hardware |
| CN106771633A (en) * | 2016-12-30 | 2017-05-31 | 易瓦特科技股份公司 | Hand-held instrument for measuring DC resistance |
| CN106771632A (en) * | 2016-12-30 | 2017-05-31 | 易瓦特科技股份公司 | Multi-channel DC resistance meter |
| CN110531258A (en) * | 2019-07-15 | 2019-12-03 | 乌江渡发电厂 | The fault detection method of stator coil in a kind of power plants generating electricity unit |
| JP7653978B2 (en) | 2019-09-30 | 2025-03-31 | ルノー エス．ア．エス． | Method for estimating insulation resistance of high voltage circuits in electric or hybrid vehicles |
| CN110855085A (en) * | 2019-12-07 | 2020-02-28 | 湘潭华联电机有限公司 | High-speed motor with rotor fault detection device |
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