CN117665526A - IGBT monitoring system of wind power converter - Google Patents
IGBT monitoring system of wind power converter Download PDFInfo
- Publication number
- CN117665526A CN117665526A CN202410140401.0A CN202410140401A CN117665526A CN 117665526 A CN117665526 A CN 117665526A CN 202410140401 A CN202410140401 A CN 202410140401A CN 117665526 A CN117665526 A CN 117665526A
- Authority
- CN
- China
- Prior art keywords
- igbt
- unit
- communicated
- side wall
- box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 46
- 238000001816 cooling Methods 0.000 claims abstract description 57
- 238000005259 measurement Methods 0.000 claims abstract description 42
- 238000012545 processing Methods 0.000 claims abstract description 29
- 239000000498 cooling water Substances 0.000 claims description 35
- 238000007789 sealing Methods 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 25
- 230000002829 reductive effect Effects 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 15
- 230000003750 conditioning effect Effects 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 11
- 239000002826 coolant Substances 0.000 claims description 10
- 238000007667 floating Methods 0.000 claims description 10
- 238000004458 analytical method Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 230000000670 limiting effect Effects 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 5
- 230000002708 enhancing effect Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 4
- 238000007781 pre-processing Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000011156 evaluation Methods 0.000 claims description 3
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 9
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 230000036961 partial effect Effects 0.000 description 16
- 230000000694 effects Effects 0.000 description 9
- 230000001681 protective effect Effects 0.000 description 8
- 238000005070 sampling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 241000270295 Serpentes Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2601—Apparatus or methods therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to the technical field of IGBT monitoring systems, in particular to a wind power converter IGBT monitoring system, which comprises an electric variable measuring unit, a magnetic variable measuring unit, a measuring control unit, a data processing unit, a driving signal detecting unit and a cooling unit; the electric variable measuring unit is used for detecting the voltage and current variables of the IGBT in real time, and the voltage and current variables of the IGBT are detected by using a voltage sensor and a current sensor which are respectively connected to the voltage and current input ends of the IGBT; the magnetic variable measuring unit is used for detecting the magnetic field variable of the IGBT in real time by using the magnetic field sensor; the measurement control unit is used for controlling the operation of the electric variable measurement unit and the magnetic variable measurement unit and starting or stopping the measurement work according to the requirement; the method is convenient for finding the attenuation condition of the IGBT in the switching-on and switching-off process in time, and reduces the heating faults of the IGBT by actively cooling the IGBT.
Description
Technical Field
The invention relates to the technical field of IGBT monitoring systems, in particular to a wind power converter IGBT monitoring system.
Background
In the wind power converter, the IGBT is a common power switch element, however, the working environment of the IGBT is easily affected by temperature, voltage, current and other factors, so that the performance of the IGBT is reduced or even damaged, in the actual use process of the IGBT for the large megawatt parallel wind power converter, the current cannot be equalized due to the reduction of the consistency of driving signals or the aggravation of the aging condition of the IGBT per se, and the IGBT is damaged, so that the IGBT in the wind power converter is monitored in real time and has important significance for improving the reliability and stability of the wind power converter.
In the prior art, as in the patent with the application number of CN20201551581. X, the invention discloses an IGBT on-line monitoring method, which comprises the following steps: s1, temperature detection: the temperature of the IGBT is measured by an infrared thermometer, and the real-time temperature of the IGBT is obtained; s2, judging the polarity: measuring the IGBT through a universal meter to obtain a polarity result of the IGBT; s3, fault detection: performing static measurement and dynamic measurement on the IGBT to obtain a fault detection result of the IGBT main body; s4, data summarization: the data acquisition device is used for carrying out data collection and summarization on the real-time temperature in the S1 and the polarity result in the S2, the signal transmitter is used for sending the data to the signal receiver through a wireless signal, and the signal receiver is used for transmitting the received data to the cloud database, so that the on-line monitoring of the IGBT is realized.
However, in the use of the method, the method is inconvenient for detecting the consistency of the driving signals in the running process of the IGBT, is easy to cause the damage of the IGBT, is inconvenient for detecting the voltage, the current variable and the magnetic variable of the IGBT in real time, and increases the use limitation.
Disclosure of Invention
In order to solve the technical problems, the invention provides the wind power converter IGBT monitoring system which is convenient for finding the attenuation condition of the IGBT in the switching-on and switching-off process in time, provides decision basis for replacing the IGBT with reduced performance in time, and reduces the heating faults of the IGBT by actively cooling the IGBT.
The invention relates to a wind power converter IGBT monitoring system which comprises an electric variable measuring unit, a magnetic variable measuring unit, a measuring control unit, a data processing unit, a driving signal detecting unit and a cooling unit;
the electric variable measuring unit is used for detecting the voltage and current variables of the IGBT in real time, and the voltage and current variables of the IGBT are detected by using a voltage sensor and a current sensor which are respectively connected to the voltage and current input ends of the IGBT; the current sensor converts current into electric signals to be output based on a resistor voltage division working principle, and the current sensor is connected to the input end and the output end of the IGBT to monitor the current change of the IGBT in real time;
the magnetic variable measuring unit is used for detecting the magnetic field variable of the IGBT in real time by using the magnetic field sensor; installing a magnetic field sensor around the IGBT and close to a magnetic field radiation area of the IGBT, setting parameters of a magnetic variable measuring unit according to the type and specification of the magnetic field sensor, and measuring the magnetic field intensity around the IGBT by using the magnetic field sensor so as to detect the magnetic field variable of the IGBT;
the measurement control unit is used for controlling the operation of the electric variable measurement unit and the magnetic variable measurement unit and starting or stopping the measurement work according to the requirement; the power supplies of the electric variable measuring unit and the magnetic variable measuring unit are communicated with the measuring control unit, the start and stop of the electric variable measuring unit and the magnetic variable measuring unit are realized by switching on or off the power supplies, and the measuring precision and the response speed of the electric variable measuring unit and the magnetic variable measuring unit are controlled by adjusting the sampling frequency and the sampling time;
The data processing unit is used for receiving and processing the measurement results of the electric variable measurement unit and the magnetic variable measurement unit, judging the working state of the IGBT by analyzing and diagnosing the measurement results, and outputting a monitoring report;
the driving signal detection unit is used for collecting actual driving signals of the IGBT in real time, comparing and analyzing the collected driving signals with standard signals, and evaluating the consistency of the signals; collecting a driving signal between a gate electrode and a collector electrode of an IGBT by using a sensor, converting the signal into a digital signal, and comparing the amplitude, frequency and phase characteristics of the signal to judge whether the signal is normal or not by filtering and amplifying the signal;
the temperature reduction unit is used for monitoring the running temperature of the IGBT in real time by utilizing a temperature sensor, and when the temperature of the IGBT is detected to exceed a set threshold value, the temperature of the IGBT is reduced by adopting phase change cooling equipment; setting a temperature threshold value in the drive signal detecting unit, converting a temperature signal output by the temperature sensor into a current signal, monitoring the current signal through the drive signal detecting unit, thereby realizing the operation temperature monitoring of the IGBT, and starting the cooling equipment to cool the IGBT when the temperature exceeds the set threshold value; the method has the advantages that the method is convenient for timely finding the attenuation condition of the IGBT in the switching-on and switching-off process through online real-time detection of the consistency of the IGBT driving signals, reduces the situation that current cannot flow between parallel converters and further causes damage to the IGBT, provides decision basis for timely replacing the IGBT with reduced performance through online real-time monitoring of the voltage, current variable and magnetic variable of the IGBT, reduces equipment damage, actively cools down the IGBT, reduces the IGBT heating faults, and improves the operation safety and reliability of the wind power converter.
Preferably, the driving signal detection unit comprises a signal conditioning unit, a data acquisition unit and an analysis processing unit;
the signal conditioning unit is used for preprocessing the actual driving signals of the collected electric variable measuring unit and the magnetic variable measuring unit, and enhancing the quality of the collected signals by amplifying, filtering and shaping the collected signals;
the data acquisition unit is used for receiving the signals processed by the signal conditioning unit in real time and converting the signals into digital signals for processing;
the analysis processing unit is used for receiving the digital signals converted by the data acquisition unit, comparing the received digital signals with the standard signals, and evaluating the consistency of the signals through waveform similarity, frequency deviation, corresponding deviation and amplitude deviation of the compared signals; the consistent detection precision of IGBT driving signals is improved, the fault risk is reduced, and the stability and reliability of the circuit are improved.
Preferably, the device also comprises a shooting unit, a display unit and an alarm unit;
the shooting unit is used for shooting the IGBT in real time, shooting information is sent to the management background, and personnel check whether the IGBT has physical damage, scorching or crack conditions through the display screen;
The display unit is used for displaying the image shot by the shooting unit, and displaying the voltage variable, the current variable, the magnetic field variable and the running temperature of the IGBT in real time;
the alarm unit is used for receiving the monitoring report output by the data processing unit and the evaluation signal result of the drive signal detection unit on the IGBT, and when the data exceeds a set safety threshold value, the audible and visual alarm and the wireless signal are used for simultaneously sending alarm information, and the background reminds workers to go to field maintenance; the effects of real-time monitoring and timely fault alarming in the running and using processes of the IGBT are improved, the fault risk is reduced, and the overhauling and maintaining efficiency is improved.
Preferably, the phase change cooling device comprises a conveying device, a water inlet device, a shell, a first medium box, a second medium box, a heat exchange tube, a heat conducting plate, a first pump body and an air duct, wherein the shell is arranged on the outer side wall of the wind power converter, cooling water is arranged in the shell, the first medium box is arranged on the inner side wall of the shell, the second medium box is arranged at the bottom end of the shell, liquid new fluorocarbon cooling medium is arranged in each of the first medium box and the second medium box, the second medium box is communicated with the first medium box through the conveying device, the conveying device is used for conveying the cooling medium in the first medium box into the second medium box, two ends of the heat exchange tube are communicated with the second medium box, the middle part of the heat exchange tube is in a serpentine shape and is arranged on the outer side wall of the heat conducting plate, the IGBT is arranged on the outer side wall of the heat conducting plate, the first pump body is communicated with the heat exchange tube, the water inlet device is communicated with the top end of the shell, the water inlet device is used for adding and discharging cooling water in the shell, the top end of the air duct is communicated with the upper part of the outer side wall of the first medium box, and the bottom end of the air duct is communicated with the upper part of the second medium box; the IGBT is installed on the outer side wall of the heat conducting plate, the cooling medium in the second medium box is circularly conveyed in the heat exchange tube by opening the first pump body, the heat exchange tube cools the heat exchange tube, the heat exchange tube cools the heat conducting plate, thereby the heat conducting plate cools the IGBT, the temperature of the liquid medium in the second medium box is continuously conveyed and changed into a gaseous state, the gaseous medium is conveyed upwards through the air duct and enters the inside of the first medium box, the liquid level of the liquid medium in the second medium box is reduced at the moment, the liquid medium in the first medium box is automatically conveyed to the inside of the second medium box through the conveying device, so that the medium is continuously cooled to the IGBT, the gaseous medium entering the first medium box is cooled by the cooling water in the shell, the gaseous medium is changed into a liquid state after being cooled by the cooling temperature, thereby the recycling of the medium is realized, the cooling efficiency of the IGBT is improved, after the cooling water temperature in the shell is increased, the low-temperature cooling water is discharged into the inside of the shell, and the cooling water in the shell is discharged outwards, thereby the cooling water in the shell is increased, the reliability of the cooling effect of the IGBT is improved, and the cooling effect of the medium in the first medium box is improved.
Preferably, the water inlet device comprises a heat radiating device, a rainwater collecting device, a first conveying pipe, a first barrel, a limiting ring, a piston, a second conveying pipe, a telescopic rod, a first spring, a connecting rod, a sealing plug and a collecting box, wherein the collecting box is arranged at the top end of the shell; after the temperature of the cooling water in the shell rises, the high-temperature pressure pushes the piston to move upwards, the piston drives the sealing plug to move upwards through the connecting rod after moving upwards, so that the cooling water in the shell is discharged into the heat radiating device through the first conveying pipe, the piston is communicated with the first cylinder body and the second conveying pipe after moving upwards, the low-temperature cooling water in the collecting box enters the inside of the shell, the cooling effect of the cooling water on the first medium box is improved, the liquid efficiency of the medium in the first medium box is improved, the automatic replacement effect is realized when the temperature of the cooling water in the shell is higher, and the use convenience of equipment is improved.
Preferably, the heat dissipating device comprises a cooling box, a plurality of groups of air pipes, an exhaust hood, a fan, a first protective net, a plurality of groups of second protective nets, a second pump body and a third conveying pipe, wherein the output end of the first conveying pipe is communicated with the cooling box, the plurality of groups of air pipes penetrate through the inside of the cooling box, the exhaust hood is arranged on the outer side wall of the cooling box, the exhaust hood is communicated with the plurality of groups of air pipes, the fan is arranged at an air inlet of the exhaust hood, the first protective net is arranged at the air inlet of the exhaust hood, the plurality of groups of second protective nets are respectively arranged at air outlets of the plurality of groups of air pipes, the input end of the second pump body is communicated with the cooling box, the input end of the third conveying pipe is communicated with the output end of the second pump body, and the output end of the third conveying pipe is communicated with the first conveying pipe; the cooling water in the casing is discharged to the inside of the cooling box through the first conveying pipe, the fan is opened to blow air in the air pipes, so that air is cooled down when passing through the inside of the air pipes, the air pipes cool down the cooling water in the cooling box through heat conduction, the convenience of recycling the cooling water after cooling is improved, the cooling efficiency of the cooling water is improved, the cooling water in the cooling box is extracted through the second pump body, and the cooling water is conveyed to the collecting box through the third conveying pipe for recycling.
Preferably, the conveying device comprises a second cylinder, an inlet hole, a sealing ring, a sealing plate, a push rod and a floating ball, wherein the second cylinder is arranged at the bottom in the first medium box, the bottom end of the second cylinder is communicated with the second medium box, the inlet hole is communicated with the upper part of the outer side wall of the second cylinder, the sealing ring is arranged on the inner side wall of the second cylinder, the sealing plate is arranged in the second cylinder, the top end of the push rod is connected with the bottom end of the sealing plate, the bottom end of the push rod is connected with the floating ball, and the floating ball is arranged in the second medium box; the floater floats on the liquid medium in the second medium case, and the floater supports the closing plate through the push rod, makes closing plate and sealing ring cooperation with the shutoff of second barrel, and after the liquid medium liquid level in the second medium case descends, the floater drives the closing plate and moves down to make the liquid medium in the first medium case get into inside the second barrel through the access hole, make the liquid medium get into inside the second medium case through the second barrel, improve the automatic convenience of replenishing of liquid medium in the second medium case, improve the convenience of medium cyclic utilization.
Preferably, the rainwater collecting device comprises a collecting cover, an arc-shaped screen plate, a supporting plate, a filter screen, a third cylinder body, a bracket, a guide post, a second spring and a baffle plate, wherein the collecting cover is communicated with the top end of the collecting box, the arc-shaped screen plate is installed at the top end of the collecting cover, the supporting plate is installed on the inner side wall of the collecting box, the filter screen is installed on the inner side wall of the first conveying pipe, the third cylinder body is communicated with the supporting plate, the bracket is installed on the inner side wall of the third cylinder body, the guide post is vertically and slidably installed on the bracket, the second spring is matched and sleeved on the outer side wall of the guide post, the baffle plate is installed at the bottom end of the guide post, and the baffle plate is arranged at the opening of the bottom of the third cylinder body; when outdoor rainfall, the rainwater passes through the arc-shaped screen plate and falls onto the filter screen, dirt in the rainwater is filtered through the filter screen, so that the filtered rainwater enters the third cylinder, the gravity of the rainwater pushes the baffle to move downwards, so that the rainwater in the third cylinder enters the collecting box to be collected, after the rainfall stops, the guide column is pushed to move upwards through the second spring, the baffle seals the third cylinder, the water evaporation waste in the collecting box is reduced, and the convenience of cooling by using the rainwater is improved.
Preferably, the device also comprises a third pump body and a fourth conveying pipe, wherein the third pump body is arranged on the outer side wall of the shell, the fourth conveying pipe is communicated with the output end of the third pump body, and the output end of the fourth conveying pipe is communicated with the inside of the collecting box; outdoor air is extracted through the third pump body, and the extracted air is conveyed to the inside of the collecting box through the fourth conveying pipe, so that the air is used for cleaning the filter screen and the arc-shaped screen plate in a back blowing mode, and the convenience of cleaning and maintenance of equipment is improved.
Preferably, the medium box further comprises a plurality of groups of fins, wherein the plurality of groups of fins are all arranged at the top of the inner side wall of the first medium box, and through holes are formed in the plurality of groups of fins; gaseous medium in the second medium case is discharged to the upper portion in the first medium case through the air duct, and the fin passes through the heat conduction cooling of first medium case to make gaseous medium and fin contact back cooling, improve the medium cooling effect.
Compared with the prior art, the invention has the beneficial effects that: the method has the advantages that the method is convenient for timely finding the attenuation condition of the IGBT in the switching-on and switching-off process through online real-time detection of the consistency of the IGBT driving signals, reduces the situation that current cannot flow between parallel converters and further causes damage to the IGBT, provides decision basis for timely replacing the IGBT with reduced performance through online real-time monitoring of the voltage, current variable and magnetic variable of the IGBT, reduces equipment damage, actively cools down the IGBT, reduces the IGBT heating faults, and improves the operation safety and reliability of the wind power converter.
Drawings
FIG. 1 is a schematic diagram of the system architecture of the present invention;
FIG. 2 is a schematic view of a partial structure of a connection of a measurement control unit with a magnetic variable measurement unit or the like;
FIG. 3 is a schematic view of a partial structure of a connection of a data processing unit with an alarm unit or the like;
FIG. 4 is a schematic diagram of a partial structure of an axial measurement of the connection of the third pump body with the fourth delivery pipe, etc.;
FIG. 5 is a schematic illustration of an axially partial structure of a collection hood connected to an arcuate screen or the like;
FIG. 6 is a schematic diagram of an axially partial structure of a second pump body connected to a third delivery tube or the like;
FIG. 7 is a schematic illustration of a partial structure of a second medium tank connected to an airway or the like;
FIG. 8 is a schematic illustration of a partial structure of a connecting rod and a sealing plug, etc. connected by an axle;
FIG. 9 is a schematic diagram of a partial structure of a portion of the cooling box connected to an air duct or the like;
FIG. 10 is a schematic illustration of a partial structure of a second cylinder to seal ring connection, etc.;
FIG. 11 is a schematic illustration of a partial structure of a guide post and baffle connection;
FIG. 12 is a schematic illustration of a partial structure of a housing connected to a first cylinder or the like;
FIG. 13 is a schematic view of a partial structure of an axial measurement of a connection of a cooling tank with a first delivery pipe or the like;
FIG. 14 is a schematic view of a partial structure of a heat exchange tube connected to a first pump body or the like;
FIG. 15 is a schematic view of a partial structure of a heat exchange tube and a heat conductive plate connected to each other;
FIG. 16 is a schematic view of a partial structure of a portion of the cooling box connected to an exhaust hood or the like;
fig. 17 is a schematic view of a partial structure of the housing and the collection box, etc. connected by a shaft.
The reference numerals in the drawings: 101. a housing; 102. a first media box; 103. a second media box; 104. a heat exchange tube; 105. a heat conductive plate; 106. a first pump body; 107. an air duct; 201. a first delivery tube; 202. a first cylinder; 203. a limiting ring; 204. a piston; 205. a second delivery tube; 206. a telescopic rod; 207. a first spring; 208. a connecting rod; 209. a sealing plug; 210. a collection box; 301. a cooling box; 302. an air duct; 303. an exhaust hood; 304. a fan; 305. a first protection net; 306. a second protection net; 307. a second pump body; 308. a third delivery tube; 401. a second cylinder; 402. an access hole; 403. a seal ring; 404. a sealing plate; 405. a push rod; 406. a floating ball; 501. a collection cover; 502. an arc-shaped screen plate; 503. a support plate; 504. a filter screen; 505. a third cylinder; 506. a bracket; 507. a guide post; 508. a second spring; 509. a baffle; 601. a third pump body; 602. a fourth conveying pipe; 701. and (3) a fin.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. This invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
1, as shown in fig. 1 to 17, the wind power converter IGBT monitoring system comprises an electric variable measuring unit, a magnetic variable measuring unit, a measuring control unit, a data processing unit, a driving signal detecting unit and a cooling unit;
the electric variable measuring unit is used for detecting the voltage and current variables of the IGBT in real time, and the voltage and current variables of the IGBT are detected by using a voltage sensor and a current sensor which are respectively connected to the voltage and current input ends of the IGBT; the current sensor converts current into electric signals to be output based on a resistor voltage division working principle, and the current sensor is connected to the input end and the output end of the IGBT to monitor the current change of the IGBT in real time;
the magnetic variable measuring unit is used for detecting the magnetic field variable of the IGBT in real time by using the magnetic field sensor; installing a magnetic field sensor around the IGBT and close to a magnetic field radiation area of the IGBT, setting parameters of a magnetic variable measuring unit according to the type and specification of the magnetic field sensor, and measuring the magnetic field intensity around the IGBT by using the magnetic field sensor so as to detect the magnetic field variable of the IGBT;
The measurement control unit is used for controlling the operation of the electric variable measurement unit and the magnetic variable measurement unit and starting or stopping the measurement work according to the requirement; the power supplies of the electric variable measuring unit and the magnetic variable measuring unit are communicated with the measuring control unit, the start and stop of the electric variable measuring unit and the magnetic variable measuring unit are realized by switching on or off the power supplies, and the measuring precision and the response speed of the electric variable measuring unit and the magnetic variable measuring unit are controlled by adjusting the sampling frequency and the sampling time;
the data processing unit is used for receiving and processing the measurement results of the electric variable measurement unit and the magnetic variable measurement unit, judging the working state of the IGBT by analyzing and diagnosing the measurement results, and outputting a monitoring report;
the driving signal detection unit is used for collecting actual driving signals of the IGBT in real time, comparing and analyzing the collected driving signals with standard signals, and evaluating the consistency of the signals; collecting a driving signal between a gate electrode and a collector electrode of an IGBT by using a sensor, converting the signal into a digital signal, and comparing the amplitude, frequency and phase characteristics of the signal to judge whether the signal is normal or not by filtering and amplifying the signal;
The temperature reduction unit is used for monitoring the running temperature of the IGBT in real time by utilizing a temperature sensor, and when the temperature of the IGBT is detected to exceed a set threshold value, the temperature of the IGBT is reduced by adopting phase change cooling equipment; setting a temperature threshold value in the drive signal detecting unit, converting a temperature signal output by the temperature sensor into a current signal, monitoring the current signal through the drive signal detecting unit, thereby realizing the operation temperature monitoring of the IGBT, and starting the cooling equipment to cool the IGBT when the temperature exceeds the set threshold value;
the driving signal detection unit comprises a signal conditioning unit, a data acquisition unit and an analysis processing unit;
the signal conditioning unit is used for preprocessing the actual driving signals of the collected electric variable measuring unit and the magnetic variable measuring unit, and enhancing the quality of the collected signals by amplifying, filtering and shaping the collected signals;
the data acquisition unit is used for receiving the signals processed by the signal conditioning unit in real time and converting the signals into digital signals for processing;
the analysis processing unit is used for receiving the digital signals converted by the data acquisition unit, comparing the received digital signals with the standard signals, and evaluating the consistency of the signals through waveform similarity, frequency deviation, corresponding deviation and amplitude deviation of the compared signals;
In the embodiment, through detecting the consistency of the IGBT driving signals on line in real time, the attenuation condition of the IGBT in the switching-on and switching-off process is conveniently found in time, the situation that current cannot flow between parallel converters and damage to the IGBT is caused is reduced, decision basis is provided for timely replacing the IGBT with reduced performance by monitoring the voltage, current variable and magnetic variable on line in real time, equipment damage is reduced, the IGBT is actively cooled, the heating fault of the IGBT is reduced, and the operation safety and reliability of the wind power converter are improved.
Embodiment 2 As shown in FIGS. 1 to 17, the IGBT monitoring system of the wind power converter comprises an electric variable measuring unit, a magnetic variable measuring unit, a measuring control unit, a data processing unit, a driving signal detecting unit and a cooling unit;
the electric variable measuring unit is used for detecting the voltage and current variables of the IGBT in real time, and the voltage and current variables of the IGBT are detected by using a voltage sensor and a current sensor which are respectively connected to the voltage and current input ends of the IGBT; the current sensor converts current into electric signals to be output based on a resistor voltage division working principle, and the current sensor is connected to the input end and the output end of the IGBT to monitor the current change of the IGBT in real time;
The magnetic variable measuring unit is used for detecting the magnetic field variable of the IGBT in real time by using the magnetic field sensor; installing a magnetic field sensor around the IGBT and close to a magnetic field radiation area of the IGBT, setting parameters of a magnetic variable measuring unit according to the type and specification of the magnetic field sensor, and measuring the magnetic field intensity around the IGBT by using the magnetic field sensor so as to detect the magnetic field variable of the IGBT;
the measurement control unit is used for controlling the operation of the electric variable measurement unit and the magnetic variable measurement unit and starting or stopping the measurement work according to the requirement; the power supplies of the electric variable measuring unit and the magnetic variable measuring unit are communicated with the measuring control unit, the start and stop of the electric variable measuring unit and the magnetic variable measuring unit are realized by switching on or off the power supplies, and the measuring precision and the response speed of the electric variable measuring unit and the magnetic variable measuring unit are controlled by adjusting the sampling frequency and the sampling time;
the data processing unit is used for receiving and processing the measurement results of the electric variable measurement unit and the magnetic variable measurement unit, judging the working state of the IGBT by analyzing and diagnosing the measurement results, and outputting a monitoring report;
the driving signal detection unit is used for collecting actual driving signals of the IGBT in real time, comparing and analyzing the collected driving signals with standard signals, and evaluating the consistency of the signals; collecting a driving signal between a gate electrode and a collector electrode of an IGBT by using a sensor, converting the signal into a digital signal, and comparing the amplitude, frequency and phase characteristics of the signal to judge whether the signal is normal or not by filtering and amplifying the signal;
The temperature reduction unit is used for monitoring the running temperature of the IGBT in real time by utilizing a temperature sensor, and when the temperature of the IGBT is detected to exceed a set threshold value, the temperature of the IGBT is reduced by adopting phase change cooling equipment; setting a temperature threshold value in the drive signal detecting unit, converting a temperature signal output by the temperature sensor into a current signal, monitoring the current signal through the drive signal detecting unit, thereby realizing the operation temperature monitoring of the IGBT, and starting the cooling equipment to cool the IGBT when the temperature exceeds the set threshold value;
the driving signal detection unit comprises a signal conditioning unit, a data acquisition unit and an analysis processing unit;
the signal conditioning unit is used for preprocessing the actual driving signals of the collected electric variable measuring unit and the magnetic variable measuring unit, and enhancing the quality of the collected signals by amplifying, filtering and shaping the collected signals;
the data acquisition unit is used for receiving the signals processed by the signal conditioning unit in real time and converting the signals into digital signals for processing;
the analysis processing unit is used for receiving the digital signals converted by the data acquisition unit, comparing the received digital signals with the standard signals, and evaluating the consistency of the signals through waveform similarity, frequency deviation, corresponding deviation and amplitude deviation of the compared signals;
The system also comprises a shooting unit, a display unit and an alarm unit;
the shooting unit is used for shooting the IGBT in real time, shooting information is sent to the management background, and personnel check whether the IGBT has physical damage, scorching or crack conditions through the display screen;
the display unit is used for displaying the image shot by the shooting unit, and displaying the voltage variable, the current variable, the magnetic field variable and the running temperature of the IGBT in real time;
the alarm unit is used for receiving the monitoring report output by the data processing unit and the evaluation signal result of the drive signal detection unit on the IGBT, and when the data exceeds a set safety threshold value, the audible and visual alarm and the wireless signal are used for simultaneously sending alarm information, and the background reminds workers to go to field maintenance;
the phase change cooling equipment comprises a conveying device, a water inlet device, a shell 101, a first medium box 102, a second medium box 103, a heat exchange tube 104, a heat conducting plate 105, a first pump body 106 and an air duct 107, wherein the shell 101 is arranged on the outer side wall of a wind power converter, cooling water is arranged in the shell 101, the first medium box 102 is arranged on the inner side wall of the shell 101, the second medium box 103 is arranged at the bottom end of the shell 101, liquid new fluorocarbon cooling medium is arranged in the first medium box 102 and the second medium box 103, the second medium box 103 is communicated with the first medium box 102 through the conveying device, the conveying device is used for conveying the cooling medium in the first medium box 102 into the second medium box 103, both ends of the heat exchange tube 104 are communicated with the second medium box 103, the middle part of the heat exchange tube 104 is in a snake shape and is arranged on the outer side wall of the heat conducting plate 105, the IGBT is arranged on the outer side wall of the heat exchange tube 104, the first pump body 106 is communicated with the heat exchange tube 104, the water inlet device is communicated with the top end of the shell 101, the water inlet device is used for adding and discharging cooling water in the shell 101, the air duct 103 is communicated with the first medium box 103, and the air duct 107 is communicated with the outer side wall of the first medium box 102 is arranged on the outer side wall of the heat conducting plate 107;
The water inlet device comprises a heat radiating device, a rainwater collecting device, a first conveying pipe 201, a first barrel 202, a limiting ring 203, a piston 204, a second conveying pipe 205, a telescopic rod 206, a first spring 207, a connecting rod 208, a sealing plug 209 and a collecting box 210, wherein the collecting box 210 is arranged at the top end of the first barrel 202, an overflow valve is arranged on the outer side wall of the collecting box 210, the top end of the collecting box 210 is provided with the rainwater collecting device, the rainwater collecting device is used for collecting rainwater to cool the first medium box 102, the first conveying pipe 201 is communicated with the bottom end of the first barrel 101, the output end of the collecting box 210 is communicated with the heat radiating device, the heat radiating device is used for radiating and cooling water, the first barrel 202 is communicated with the top end of the first conveying pipe 201, the first barrel 202 is arranged opposite to the top end of the first conveying pipe 201, the input end of the second conveying pipe 205 is communicated with the collecting box 210, the output end of the second conveying pipe 205 is communicated with the outer side wall of the first barrel 202, the top end of the first barrel 202 is provided with a vent, the limiting ring 203 is arranged on the inner side wall of the first barrel 202, the piston 204 is vertically slidably arranged in the first barrel 202, the inner side wall 206 is arranged on the inner side wall of the first barrel 202, the first barrel 206 is arranged on the inner side wall of the inner side of the side wall of the first barrel 202, the first barrel 206 is communicated with the piston 204, the piston 206 is connected with the inner side wall of the piston 208 through the connecting rod 208, the telescopic rod is connected with the upper end of the piston 209, and the inner side of the piston 208 is connected with the inner side wall of the piston 209 by the telescopic rod is connected with the upper end of the piston end of the connecting rod 101;
The heat dissipation device comprises a cooling box 301, a plurality of groups of air pipes 302, an exhaust hood 303, a fan 304, a first protective screen 305, a plurality of groups of second protective screens 306, a second pump body 307 and a third conveying pipe 308, wherein the output end of the first conveying pipe 201 is communicated with the cooling box 301, the plurality of groups of air pipes 302 penetrate through the inside of the cooling box 301, the exhaust hood 303 is arranged on the outer side wall of the cooling box 301, the exhaust hood 303 is communicated with the plurality of groups of air pipes 302, the fan 304 is arranged at the air inlet of the exhaust hood 303, the first protective screen 305 is arranged at the air inlet of the exhaust hood 303, the plurality of groups of second protective screens 306 are respectively arranged at the air outlets of the plurality of groups of air pipes 302, the input end of the second pump body 307 is communicated with the cooling box 301, the input end of the third conveying pipe 308 is communicated with the output end of the second pump body 307, and the output end of the third conveying pipe 308 is communicated with the first conveying pipe 201;
the conveying device comprises a second cylinder 401, an inlet hole 402, a sealing ring 403, a sealing plate 404, a push rod 405 and a floating ball 406, wherein the second cylinder 401 is arranged at the bottom in the first medium box 102, the bottom end of the second cylinder 401 is communicated with the second medium box 103, the inlet hole 402 is communicated with the upper part of the outer side wall of the second cylinder 401, the sealing ring 403 is arranged on the inner side wall of the second cylinder 401, the sealing plate 404 is arranged in the second cylinder 401, the top end of the push rod 405 is connected with the bottom end of the sealing plate 404, the bottom end of the push rod 405 is connected with the floating ball 406, and the floating ball 406 is arranged in the second medium box 103;
The rainwater collecting device comprises a collecting cover 501, an arc-shaped screen 502, a supporting plate 503, a filter screen 504, a third cylinder 505, a bracket 506, a guide post 507, a second spring 508 and a baffle 509, wherein the collecting cover 501 is communicated with the top end of a collecting box 210, the arc-shaped screen 502 is arranged at the top end of the collecting cover 501, the supporting plate 503 is arranged on the inner side wall of the collecting box 210, the filter screen 504 is arranged on the inner side wall of a first conveying pipe 201, the third cylinder 505 is communicated with the supporting plate 503, the bracket 506 is arranged on the inner side wall of the third cylinder 505, the guide post 507 is vertically and slidably arranged on the bracket 506, the second spring 508 is matched and sleeved on the outer side wall of the guide post 507, the baffle 509 is arranged at the bottom end of the guide post 507, and the baffle 509 is arranged at the opening at the bottom of the third cylinder 505;
the device further comprises a third pump body 601 and a fourth conveying pipe 602, wherein the third pump body 601 is arranged on the outer side wall of the shell 101, the fourth conveying pipe 602 is communicated with the output end of the third pump body 601, and the output end of the fourth conveying pipe 602 is communicated with the inside of the collecting box 210;
the device further comprises a plurality of groups of fins 701, wherein the plurality of groups of fins 701 are all arranged on the top of the inner side wall of the first medium box 102, and through holes are all arranged on the plurality of groups of fins 701;
in this embodiment, the IGBT is mounted on the outer side wall of the heat conducting plate 105, the first pump 106 is opened to circulate and convey the cooling medium in the second medium tank 103 in the heat exchanging tube 104, so that the cooling medium cools the heat exchanging tube 104, the heat exchanging tube 104 cools the heat conducting plate 105, so that the heat conducting plate 105 cools the IGBT, as the liquid medium in the second medium tank 103 continuously increases in conveying temperature to become gaseous, the gaseous medium is conveyed upward through the air duct 107 and enters the first medium tank 102, at this time, the liquid level of the liquid medium in the second medium tank 103 is reduced, the liquid medium in the first medium tank 102 is automatically conveyed into the second medium tank 103 through the conveying device, so that the medium continuously cools the IGBT, as the cooling water in the housing 101 cools the first medium tank 102, the gaseous medium entering the first medium tank 102 is changed into liquid state after being cooled by the cooling temperature, thereby realizing the recycling of the medium and improving the cooling efficiency of the device to the IGBT, when the temperature of the cooling water in the shell 101 is increased, the low-temperature cooling water is discharged into the shell 101 by utilizing the water inlet device, meanwhile, the warmed cooling water in the shell 101 is discharged outwards, thereby improving the cooling effect of the first medium tank 102 to the medium, improving the reliability of the device to the IGBT cooling, when the temperature of the cooling water in the shell 101 is increased, the high-temperature pressure pushes the piston 204 to move upwards, the piston 204 is moved upwards and then drives the sealing plug 209 to move upwards through the connecting rod 208, thereby the cooling water in the shell 101 is discharged into the heat radiator through the first conveying pipe 201, the piston 204 is moved upwards and then the first cylinder 202 is communicated with the second conveying pipe 205, thereby the low-temperature cooling water in the collecting tank 210 enters the shell 101, improving the cooling effect of the cooling water to the first medium tank 102, the efficiency that the medium in the first medium box 102 is cooled and is liquid is improved, the automatic replacement effect is realized when the temperature of cooling water in the shell 101 is higher, and the use convenience of equipment is improved.
According to the wind power converter IGBT monitoring system, when the wind power converter IGBT monitoring system works, an IGBT is installed on the outer side wall of the heat conducting plate 105, a first pump body 106 is opened to circularly convey cooling medium in the second medium tank 103 in the heat exchange tube 104, the cooling medium cools the heat exchange tube 104, the heat exchange tube 104 cools the heat conducting plate 105, the heat conducting plate 105 cools the IGBT, the temperature of the liquid medium in the second medium tank 103 is continuously increased to be changed into a gaseous state, the gaseous medium is conveyed upwards through the air guide pipe 107 and enters the first medium tank 102, at the moment, the liquid medium level in the second medium tank 103 is reduced, the liquid medium in the first medium tank 102 is automatically conveyed into the second medium tank 103 through the conveying device, so that the medium continuously cools the IGBT, and as the cooling water in the shell 101 cools the first medium tank 102, the gaseous medium in the shell 101 is changed into a liquid state after being cooled through the cooling temperature, the water temperature is increased, the medium is circularly used, and after the cooling water in the shell 101 is increased, the low-temperature cooling water is discharged to the inside the shell 101, and the water is discharged outside the shell 101.
The main functions realized by the invention are as follows: through detecting IGBT drive signal uniformity on line in real time, be convenient for in time discover the decay condition of IGBT in turn-on and turn-off process, reduce appearing between parallelly connected converters and can not flow equalizes, and then arouse the condition that IGBT damaged, provide decision-making basis for the IGBT that in time change the performance decline, reduce equipment damage, through with IGBT initiative cooling down, reduce IGBT trouble that generates heat, improve wind-powered electricity generation converter's operation safety and reliability.
The first pump body 106, the fan 304, the second pump body 307 and the third pump body 601 of the IGBT monitoring system for the wind power converter are purchased in the market, and a person skilled in the art only needs to install and operate according to the attached use instruction without creative labor of the person skilled in the art.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (10)
1. The IGBT monitoring system of the wind power converter is characterized by comprising an electric variable measuring unit, a magnetic variable measuring unit, a measuring control unit, a data processing unit, a driving signal detecting unit and a cooling unit;
The electric variable measuring unit is used for detecting the voltage and current variables of the IGBT in real time, and the voltage and current variables of the IGBT are detected by using a voltage sensor and a current sensor which are respectively connected to the voltage and current input ends of the IGBT;
the magnetic variable measuring unit is used for detecting the magnetic field variable of the IGBT in real time by using the magnetic field sensor;
the measurement control unit is used for controlling the operation of the electric variable measurement unit and the magnetic variable measurement unit and starting or stopping the measurement work according to the requirement;
the data processing unit is used for receiving and processing the measurement results of the electric variable measurement unit and the magnetic variable measurement unit, judging the working state of the IGBT by analyzing and diagnosing the measurement results, and outputting a monitoring report;
the driving signal detection unit is used for collecting actual driving signals of the IGBT in real time, comparing and analyzing the collected driving signals with standard signals, and evaluating the consistency of the signals;
the temperature reduction unit is used for monitoring the running temperature of the IGBT in real time by utilizing the temperature sensor, and when the temperature of the IGBT is detected to exceed a set threshold value, the temperature of the IGBT is reduced by adopting the phase change cooling equipment.
2. The IGBT monitoring system of the wind power converter according to claim 1, wherein the driving signal detection unit comprises a signal conditioning unit, a data acquisition unit and an analysis processing unit;
The signal conditioning unit is used for preprocessing the actual driving signals of the collected electric variable measuring unit and the magnetic variable measuring unit, and enhancing the quality of the collected signals by amplifying, filtering and shaping the collected signals;
the data acquisition unit is used for receiving the signals processed by the signal conditioning unit in real time and converting the signals into digital signals for processing;
the analysis processing unit is used for receiving the digital signals converted by the data acquisition unit, comparing the received digital signals with the standard signals, and evaluating the consistency of the signals through waveform similarity, frequency deviation, corresponding deviation and amplitude deviation of the compared signals.
3. The wind power converter IGBT monitoring system according to claim 1, further comprising a shooting unit, a display unit and an alarm unit;
the shooting unit is used for shooting the IGBT in real time, shooting information is sent to the management background, and personnel check whether the IGBT has physical damage, scorching or crack conditions through the display screen;
the display unit is used for displaying the image shot by the shooting unit, and displaying the voltage variable, the current variable, the magnetic field variable and the running temperature of the IGBT in real time;
The alarm unit is used for receiving the monitoring report output by the data processing unit and the evaluation signal result of the drive signal detection unit on the IGBT, and when the data exceeds the set safety threshold, the audible and visual alarm and the wireless signal are used for simultaneously sending alarm information, and the background reminds workers to go to field maintenance.
4. The IGBT monitoring system of the wind power converter of claim 1, wherein the phase change cooling equipment comprises a conveying device, a water inlet device, a shell (101), a first medium tank (102), a second medium tank (103), a heat exchange tube (104), a heat conducting plate (105), a first pump body (106) and an air guide tube (107), wherein the shell (101) is arranged on the outer side wall of the wind power converter, cooling water is arranged in the shell (101), the first medium tank (102) is arranged on the inner side wall of the shell (101), the second medium tank (103) is arranged at the bottom end of the shell (101), liquid new fluorocarbon cooling medium is arranged in the first medium tank (102) and the second medium tank (103), the second medium tank (103) is communicated with the first medium tank (102) through the conveying device, the two ends of the heat exchange tube (104) are communicated with the inside of the second medium tank (103), the middle part of the heat exchange tube (104) is arranged on the heat conducting plate (105) and is arranged on the outer side wall of the shell (101), the water inlet device is connected with the heat exchange tube (104) through the conveying device, the water inlet device is arranged on the top end of the shell (101), the top end of the air duct (107) is communicated with the upper part of the outer side wall of the first medium box (102), and the bottom end of the air duct (107) is communicated with the upper part of the outer side wall of the second medium box (103).
5. The IGBT monitoring system of the wind power converter according to claim 4, wherein the water inlet device comprises a heat radiating device, a rainwater collecting device, a first conveying pipe (201), a first barrel (202), a limiting ring (203), a piston (204), a second conveying pipe (205), a telescopic rod (206), a first spring (207), a connecting rod (208), a sealing plug (209) and a collecting box (210), the collecting box (210) is arranged at the top end of the shell (101), an overflow valve is arranged on the outer side wall of the collecting box (210), the rainwater collecting device is used for collecting rainwater to cool down the first medium box (102), the first conveying pipe (201) is communicated with the bottom end of the shell (101), the output end of the collecting box (210) is communicated with the heat radiating device, the heat radiating device is used for radiating cooling water, the first barrel (202) is communicated with the top end of the shell (101), the first barrel (202) is arranged opposite to the first conveying pipe (201) up and down, the input end of the second conveying pipe (205) is communicated with the collecting box (210), the second conveying pipe (205) is communicated with the input end of the collecting box (205), the second conveying pipe (205) is communicated with the output end of the first barrel (202) is arranged on the outer side wall of the first barrel (202), piston (204) slidable mounting from top to bottom is in first barrel (202), telescopic link (206) are installed on first barrel (202) inside wall, telescopic link (206) bottom is connected with piston (204) top, first spring (207) cooperation suit is on telescopic link (206) lateral wall, connecting rod (208) top is connected with piston (204) bottom, connecting rod (208) bottom passes inside casing (101) and is connected with sealing plug (209), sealing plug (209) slidable from top to bottom stretches into inside first conveyer pipe (201).
6. The IGBT monitoring system for a wind power converter according to claim 5, wherein the heat dissipating device includes a cooling box (301), a plurality of air pipes (302), an exhaust hood (303), a fan (304), a first protection net (305), a plurality of second protection nets (306), a second pump body (307) and a third conveying pipe (308), the output end of the first conveying pipe (201) is communicated with the cooling box (301), the plurality of air pipes (302) pass through the cooling box (301), the exhaust hood (303) is mounted on the outer side wall of the cooling box (301), the exhaust hood (303) is communicated with the plurality of air pipes (302), the fan (304) is mounted at the air inlet of the exhaust hood (303), the first protection net (305) is mounted at the air inlet of the exhaust hood (303), the plurality of second protection nets (306) are respectively mounted at the air outlets of the plurality of air pipes (302), the input end of the second pump body (307) is communicated with the cooling box (301), the input end of the third conveying pipe (308) is communicated with the output end of the second pump body (307), and the output end of the third conveying pipe (308) is communicated with the first conveying pipe (201).
7. The IGBT monitoring system of the wind power converter according to claim 4, wherein the conveying device comprises a second barrel (401), an inlet hole (402), a sealing ring (403), a sealing plate (404), a push rod (405) and a floating ball (406), the second barrel (401) is installed at the inner bottom of the first medium box (102), the bottom end of the second barrel (401) is communicated with the second medium box (103), the inlet hole (402) is communicated with the upper part of the outer side wall of the second barrel (401), the sealing ring (403) is installed on the inner side wall of the second barrel (401), the sealing plate (404) is arranged inside the second barrel (401), the top end of the push rod (405) is connected with the bottom end of the sealing plate (404), the bottom end of the push rod (405) is connected with the floating ball (406), and the floating ball (406) is arranged inside the second medium box (103).
8. The IGBT monitoring system for a wind power converter according to claim 5, wherein the rainwater collecting device includes a collecting cover (501), an arc-shaped screen (502), a support plate (503), a filter screen (504), a third cylinder (505), a bracket (506), a guide post (507), a second spring (508) and a baffle (509), the collecting cover (501) is communicated with the top of the collecting box (210), the arc-shaped screen (502) is mounted on the top of the collecting cover (501), the support plate (503) is mounted on the inner side wall of the collecting box (210), the filter screen (504) is mounted on the inner side wall of the first conveying pipe (201), the third cylinder (505) is communicated with the support plate (503), the bracket (506) is mounted on the inner side wall of the third cylinder (505), the guide post (507) is vertically slidably mounted on the bracket (506), the second spring (508) is matched and sleeved on the outer side wall of the guide post (507), the baffle (509) is mounted on the bottom of the guide post (507), and the baffle (509) is mounted on the bottom opening of the bottom of the third cylinder (505).
9. The IGBT monitoring system of claim 4, further comprising a third pump body (601) and a fourth conveying pipe (602), wherein the third pump body (601) is installed on the outer side wall of the shell (101), the fourth conveying pipe (602) is communicated and arranged on the output end of the third pump body (601), and the output end of the fourth conveying pipe (602) is communicated with the inside of the collecting box (210).
10. The IGBT monitoring system for a wind power converter according to claim 4, further comprising a plurality of groups of fins (701), wherein the plurality of groups of fins (701) are all mounted on the top of the inner side wall of the first medium box (102), and through holes are all provided in the plurality of groups of fins (701).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410140401.0A CN117665526B (en) | 2024-02-01 | 2024-02-01 | IGBT monitoring system of wind power converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410140401.0A CN117665526B (en) | 2024-02-01 | 2024-02-01 | IGBT monitoring system of wind power converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117665526A true CN117665526A (en) | 2024-03-08 |
| CN117665526B CN117665526B (en) | 2024-04-19 |
Family
ID=90086612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410140401.0A Active CN117665526B (en) | 2024-02-01 | 2024-02-01 | IGBT monitoring system of wind power converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117665526B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118130998A (en) * | 2024-05-08 | 2024-06-04 | 成都恒合控制系统有限公司 | IGBT decay characteristic test equipment |
| CN118130955A (en) * | 2024-05-06 | 2024-06-04 | 四川天旭新维工程技术股份有限公司 | Energy feedback type frequency converter test equipment |
Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813954A (en) * | 2010-04-28 | 2010-08-25 | 中国人民解放军国防科学技术大学 | High-temperature variability temperature and humidity environmental test control method and device |
| US20110016788A1 (en) * | 2009-07-23 | 2011-01-27 | Thacker Pradeep S | Methods and system for heat recovery in a gasification system |
| US20110179809A1 (en) * | 2009-10-30 | 2011-07-28 | Tao Zhang | Cooling system and method for superconducting magnets |
| CN202433456U (en) * | 2011-12-31 | 2012-09-12 | 阳光电源股份有限公司 | Test device for IGBT (insulated gate bipolar translator) parallel power unit |
| CN103575401A (en) * | 2012-07-20 | 2014-02-12 | 中国科学院电工研究所 | System for testing temperature distribution characteristics of power semiconductor module |
| CN205376503U (en) * | 2016-02-19 | 2016-07-06 | 保定市一禾电气有限公司 | Water -cooling circulating device |
| CN106226673A (en) * | 2016-09-12 | 2016-12-14 | 河北工业大学 | A kind of combination type failure automatic detection device of IGBT |
| CN108680846A (en) * | 2018-05-09 | 2018-10-19 | 浙江埃菲生能源科技有限公司 | A kind of high-power IGBT module Online Transaction Processing |
| CN208207060U (en) * | 2018-06-04 | 2018-12-07 | 华北电力大学 | A kind of power cycle pilot system based on 750A semiconductor devices |
| CN110672965A (en) * | 2019-10-28 | 2020-01-10 | 成都铁路机电配件厂 | Locomotive current transformation driver intelligent detection device |
| CN110968129A (en) * | 2019-11-29 | 2020-04-07 | 浙江嘉杰汽车设计有限公司 | External water circulation temperature control system of fuel cell clamp |
| CN111289869A (en) * | 2020-03-30 | 2020-06-16 | 国网福建省电力有限公司电力科学研究院 | IGBT test system with voltage waveform detection device |
| CN111551836A (en) * | 2020-03-30 | 2020-08-18 | 国网福建省电力有限公司电力科学研究院 | IGBT test system with grid leakage current test circuit |
| CN212083594U (en) * | 2020-03-30 | 2020-12-04 | 国网福建省电力有限公司电力科学研究院 | Insulation testing device of IGBT testing system |
| CN112289554A (en) * | 2020-10-22 | 2021-01-29 | 马鞍山豪远电子有限公司 | Automatic magnetism device that separates of transformer with cooling function |
| CN112327126A (en) * | 2020-10-28 | 2021-02-05 | 广州汽车集团股份有限公司 | IGBT module performance test system and method |
| CN112782554A (en) * | 2019-11-08 | 2021-05-11 | 河南森源电气股份有限公司 | IGBT drive plate test system |
| CN113447790A (en) * | 2021-07-13 | 2021-09-28 | 西安交通大学 | Non-contact IGBT state monitoring device |
| CN113517804A (en) * | 2021-07-13 | 2021-10-19 | 西安交通大学 | Synchronous performance monitoring circuit under IGBT series connection condition |
| CN113980703A (en) * | 2021-11-09 | 2022-01-28 | 毅康科技有限公司 | Cooling device for biomass gas production |
| CN114690013A (en) * | 2022-02-24 | 2022-07-01 | 中电普瑞电力工程有限公司 | High-power IGBT monitoring device, monitoring method and monitoring system |
| CN115128422A (en) * | 2022-06-28 | 2022-09-30 | 上海交通大学 | All-in-one test system and test method for electric heating parameters of power semiconductor device |
| CN116430190A (en) * | 2021-12-30 | 2023-07-14 | 上海华虹挚芯电子科技有限公司 | IGBT module working state detection system and method |
| CN220119663U (en) * | 2023-04-10 | 2023-12-01 | 泰州首创环保科技有限公司 | Cooling circulation device |
-
2024
- 2024-02-01 CN CN202410140401.0A patent/CN117665526B/en active Active
Patent Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110016788A1 (en) * | 2009-07-23 | 2011-01-27 | Thacker Pradeep S | Methods and system for heat recovery in a gasification system |
| US20110179809A1 (en) * | 2009-10-30 | 2011-07-28 | Tao Zhang | Cooling system and method for superconducting magnets |
| CN101813954A (en) * | 2010-04-28 | 2010-08-25 | 中国人民解放军国防科学技术大学 | High-temperature variability temperature and humidity environmental test control method and device |
| CN202433456U (en) * | 2011-12-31 | 2012-09-12 | 阳光电源股份有限公司 | Test device for IGBT (insulated gate bipolar translator) parallel power unit |
| CN103575401A (en) * | 2012-07-20 | 2014-02-12 | 中国科学院电工研究所 | System for testing temperature distribution characteristics of power semiconductor module |
| CN205376503U (en) * | 2016-02-19 | 2016-07-06 | 保定市一禾电气有限公司 | Water -cooling circulating device |
| CN106226673A (en) * | 2016-09-12 | 2016-12-14 | 河北工业大学 | A kind of combination type failure automatic detection device of IGBT |
| CN108680846A (en) * | 2018-05-09 | 2018-10-19 | 浙江埃菲生能源科技有限公司 | A kind of high-power IGBT module Online Transaction Processing |
| CN208207060U (en) * | 2018-06-04 | 2018-12-07 | 华北电力大学 | A kind of power cycle pilot system based on 750A semiconductor devices |
| CN110672965A (en) * | 2019-10-28 | 2020-01-10 | 成都铁路机电配件厂 | Locomotive current transformation driver intelligent detection device |
| CN112782554A (en) * | 2019-11-08 | 2021-05-11 | 河南森源电气股份有限公司 | IGBT drive plate test system |
| CN110968129A (en) * | 2019-11-29 | 2020-04-07 | 浙江嘉杰汽车设计有限公司 | External water circulation temperature control system of fuel cell clamp |
| CN111551836A (en) * | 2020-03-30 | 2020-08-18 | 国网福建省电力有限公司电力科学研究院 | IGBT test system with grid leakage current test circuit |
| CN212083594U (en) * | 2020-03-30 | 2020-12-04 | 国网福建省电力有限公司电力科学研究院 | Insulation testing device of IGBT testing system |
| CN111289869A (en) * | 2020-03-30 | 2020-06-16 | 国网福建省电力有限公司电力科学研究院 | IGBT test system with voltage waveform detection device |
| CN112289554A (en) * | 2020-10-22 | 2021-01-29 | 马鞍山豪远电子有限公司 | Automatic magnetism device that separates of transformer with cooling function |
| CN112327126A (en) * | 2020-10-28 | 2021-02-05 | 广州汽车集团股份有限公司 | IGBT module performance test system and method |
| CN113447790A (en) * | 2021-07-13 | 2021-09-28 | 西安交通大学 | Non-contact IGBT state monitoring device |
| CN113517804A (en) * | 2021-07-13 | 2021-10-19 | 西安交通大学 | Synchronous performance monitoring circuit under IGBT series connection condition |
| CN113980703A (en) * | 2021-11-09 | 2022-01-28 | 毅康科技有限公司 | Cooling device for biomass gas production |
| CN116430190A (en) * | 2021-12-30 | 2023-07-14 | 上海华虹挚芯电子科技有限公司 | IGBT module working state detection system and method |
| CN114690013A (en) * | 2022-02-24 | 2022-07-01 | 中电普瑞电力工程有限公司 | High-power IGBT monitoring device, monitoring method and monitoring system |
| CN115128422A (en) * | 2022-06-28 | 2022-09-30 | 上海交通大学 | All-in-one test system and test method for electric heating parameters of power semiconductor device |
| CN220119663U (en) * | 2023-04-10 | 2023-12-01 | 泰州首创环保科技有限公司 | Cooling circulation device |
Non-Patent Citations (2)
| Title |
|---|
| 王鹏 等: "大功率变频器热分析及冷却系统的设计", 《中国计量协会冶金分会2013年会论文集》, 10 September 2013 (2013-09-10), pages 505 - 502 * |
| 颜俏: "用于大功率IGBT的微通道冷却单元流动沸腾换热研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》, no. 1, 15 January 2020 (2020-01-15), pages 033 - 384 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118130955A (en) * | 2024-05-06 | 2024-06-04 | 四川天旭新维工程技术股份有限公司 | Energy feedback type frequency converter test equipment |
| CN118130955B (en) * | 2024-05-06 | 2024-07-19 | 四川天旭新维工程技术股份有限公司 | Energy feedback type frequency converter test equipment |
| CN118130998A (en) * | 2024-05-08 | 2024-06-04 | 成都恒合控制系统有限公司 | IGBT decay characteristic test equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117665526B (en) | 2024-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN117665526B (en) | IGBT monitoring system of wind power converter | |
| CN202769873U (en) | System used to judge lack of air conditioner refrigerant | |
| EP2196667A2 (en) | Cooling system for wind turbine components | |
| CN109443075B (en) | Thermal performance evaluation method and monitoring system for closed cooling tower | |
| CN110989476A (en) | Monitoring system for remotely monitoring environment of electric power cabinet | |
| CN111337287A (en) | Transformer cooler cooling efficiency monitoring system | |
| CN209783327U (en) | Indirect air cooling radiator, indirect air cooling tower and indirect air cooling system | |
| CN111429601A (en) | Automatic inspection device for air cooling island | |
| CN214621301U (en) | Intelligent flow sensor based on intelligent high-temperature-resistant technology | |
| CN216847724U (en) | Gas sensing module and environmental air quality monitoring micro station | |
| CN116316214A (en) | Automatic monitoring system for temperature of power distribution cabinet | |
| CN212747399U (en) | Remote terminal control system for composite flow closed cooling tower | |
| CN113676864A (en) | Wireless networking single-point displacement counting data acquisition device | |
| CN111895811A (en) | Remote terminal control system of composite flow closed cooling tower and cooling tower thereof | |
| CN212749085U (en) | Electrical equipment monitoring devices | |
| CN113027700A (en) | Rapid cooling method for tower barrel | |
| CN218183830U (en) | Intelligent computer lab temperature control device | |
| CN219392163U (en) | Heat dissipation power detection device for heating component | |
| CN215911270U (en) | Rain-proof energy-saving power distribution transformer | |
| CN203981415U (en) | Performance monitoring diagnostic system based on power station direct air-cooling system | |
| CN221137710U (en) | New energy heat dissipation fills electric pile | |
| CN218787611U (en) | Air source heat pump outdoor unit | |
| CN219107518U (en) | Novel in-station monitoring system | |
| CN211954247U (en) | Fault alarm device for intelligent manufacturing | |
| CN213690854U (en) | Infrared remote tracking and diagnosing device for abnormal heating of charged equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |