CN103728998A - Intelligent adjustment type heat dissipation method and system for high-voltage frequency converter - Google Patents
Intelligent adjustment type heat dissipation method and system for high-voltage frequency converter Download PDFInfo
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- CN103728998A CN103728998A CN201310749463.3A CN201310749463A CN103728998A CN 103728998 A CN103728998 A CN 103728998A CN 201310749463 A CN201310749463 A CN 201310749463A CN 103728998 A CN103728998 A CN 103728998A
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Abstract
The invention discloses an intelligent adjustment type heat dissipation method and system for a high-voltage frequency converter. The intelligent adjustment type heat dissipation method for the high-voltage frequency converter comprises the steps that (1) a temperature signal of an IGBT is detected in real time, and the temperature signal of the IGBT is converted into a digital signal to be output after shaping and filtering are conducted on the temperature signal; (2) the temperature signal of the IGBT is received and is judged, and when the temperature value is smaller than a preset smallest temperature value, a radiator is controlled to operate at a preset lowest operation frequency; when the temperature value is larger than a preset largest temperature value, the radiator is controlled to operate at a preset highest operation frequency; when the temperature value is between the preset largest temperature value and the preset smallest temperature value, the target operation frequency of the radiator is calculated, and the radiator is controlled to operate at the target operation frequency. The intelligent adjustment type heat dissipation system for the high-voltage frequency converter comprises a first module used for detecting the temperature signal of the IGBT in real time and a second module used for controlling the radiator to operate. The intelligent adjustment type heat dissipation method and system for the high-voltage frequency converter have the advantages that the method is easy to realize, energy consumption is small, the utilization rate of heat dissipation power is high, the noise is low, and intelligent adjustment can be achieved.
Description
Technical field
The present invention relates to high voltage converter field, relate in particular to a kind of intelligence for high voltage converter and regulate heat dissipating method and system.
Background technology
In high voltage converter field; because plant capacity is large; take unit cascade high voltage converter as example; be generally MW level; its efficiency also generally can reach 95～97%; when normal work, conventionally can produce a large amount of heats, for guaranteeing the normal operation of equipment, must a large amount of dissipation of heats be gone out by cooling system.
In the actual condition of high voltage converter, conventionally very large to the redundancy coefficient of choice of electrical machine, the load of general operation is set to 60%～80% of motor nominal load, and the capacity of supporting high voltage converter is also generally large than the rated power of motor with it, thus when normal work the heating power of high voltage converter less than 50% of maximum heat radiation power.In prior art; the heat radiation of high voltage converter system is adopted conventionally to the method for air duct radiation; no matter system is in light load or heavy load; all continue to carry to cooling fan the low tension of 380VAC, 50Hz; make motor from system boot to shutting down always in constant speed operating condition; and wind flow remains unchanged, therefore when equipment underload, adopt the heat radiation power utilization factor of this type of heat dissipating method very low.The method of air duct radiation of the prior art further also comprises following defect:
(1) because high voltage converter cooling fan can produce very large noise when the full speed running, for the staff who carries out for a long time equipment debugging maintenance, cause very large injury, staff must be with noise-proofing sheath to protect.
(2) long-time running of high voltage converter cooling fan, under full-speed state, can reduce the dust-proof effect of air inlet, even causes dust to stop up air inlet, thereby reduces heat radiation power.
Summary of the invention
The technical problem to be solved in the present invention is just: the technical matters existing for prior art, intelligent temperature control heat dissipating method and the system for the high voltage converter that the invention provides that a kind of implementation method is simple, energy resource consumption is little, heat radiation power utilization factor is high, noise is little and can intelligence regulate.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is:
Intelligence for high voltage converter regulates a heat dissipating method, and step is:
(1) detect in real time the temperature signal of IGBT, carry out being converted to digital signal output after shaping, filtering;
(2) receive the temperature signal of IGBT and judge, when temperature value is less than or equal to default minimum temperature value, controlling the minimum operation frequency operation of heat abstractor to preset; When temperature value is more than or equal to default maximum temperature value, control the maximum running frequency operation of heat abstractor to preset; When temperature value is between default maximum temperature value and minimum temperature value, according to temperature value, calculate the object run frequency of heat abstractor, control heat abstractor and move with object run frequency.
As the further improvement of the inventive method, the specific implementation method of described step (1) is: by the temperature of the temperature test element sampled I GBT of the power cell inside of high voltage converter, be converted to digital signal output after voltage follower carries out shaping, filtering.
As the further improvement of the inventive method, in described step (2), according to temperature value, calculate according to the following formula the object run frequency of heat abstractor:
△Q=△t×Qf×Cp×ρ
Wherein △ Q is the total loss power of system and is constant, and △ t is the temperature difference of air in and outlet, by environment temperature and IGBT temperature, is determined, Qf is total ventilation, by the rotating speed of heat abstractor, determined the specific heat that Cp is air and be 1005J/kg ℃, the density that ρ is air and be 1.165kg/m
3.
As the further improvement of the inventive method, also comprise the control flow under thermal equilibrium state, concrete grammar is: judge that whether Current Temperatures is in thermal equilibrium state, if yes, the running frequency of controlling heat abstractor is constant, if NO, returns to execution step (1).
As the further improvement of the inventive method, also comprise troubleshooting process, concrete methods of realizing is: the current running frequency that judges heat abstractor, if running frequency is default maximum running frequency, and when IGBT temperature reaches thermal equilibrium in 90%～100% scope of default maximum temperature threshold value, be judged to be light fault running status, send early warning information and control heat abstractor and continue operation; If running frequency is default maximum running frequency and IGBT temperature while reaching default maximum temperature threshold value, judge the failure operation state of attaching most importance to, send failure message and also control IGBT and turn-off.
As the further improvement of the inventive method: while reaching Preset Time, control the heat abstractor frequency converter of closing IGBT and being connected with heat abstractor the working time of described light fault running status; Or working time of described light fault running status while reaching Preset Time, control the heat abstractor frequency converter continuation that shielding fault and control is connected with heat abstractor and move.
Intelligence for high voltage converter regulates a cooling system, comprising:
The first module, for detecting in real time the temperature signal of IGBT, carries out being converted to digital signal output after shaping, filtering;
The second module, receives the temperature signal of IGBT and judges, when temperature value is less than or equal to default minimum temperature value, controls the minimum operation frequency operation of heat abstractor to preset; When temperature value is more than or equal to default maximum temperature value, control the maximum running frequency operation of heat abstractor to preset; When temperature value is between default maximum temperature value and minimum temperature value, according to temperature value, calculate the object run frequency of heat abstractor, control heat abstractor and move with object run frequency.
As the further improvement of apparatus of the present invention: described the first module comprises the IGBT temperature sampling unit, data processing unit and the data transmission unit that connect successively; The temperature of described IGBT temperature sampling unit sampling IGBT, exports data processing unit to; Described data processing unit is converted to digital signal by the IGBT analog temperature signal of input after shaping, filtering, exports data transmission unit to; Described data transmission unit is transferred to the second module by the digital temperature signal of input.
As the further improvement of apparatus of the present invention: described the second module comprises control module and the communication unit of connection, the other end of described communication unit connects heat abstractor frequency converter; Described control module is according to the temperature signal output control signal of the IGBT of the first module output, and described communication unit transmission of control signals, to heat abstractor frequency converter, is controlled the running frequency of heat abstractor.
As the further improvement of apparatus of the present invention: also comprise the HMI interactive module being connected with the second module, described HMI interactive module comprises parameter set unit and display unit, described parameter set unit is used for arranging maximum temperature value, the minimum temperature value of maximum running frequency, minimum operation frequency and the IGBT of heat abstractor, exports to the second module; Described display unit is used for exporting real time execution frequency and the IGBT temperature value of the second module.
Compared with prior art, the invention has the advantages that:
(1) the present invention is by detecting the temperature computation fan operation frequency of IGBT, weight intelligence according to system loading regulates high voltage converter heat abstractor running frequency, can effectively reduce energy resource consumption, improve heat radiation power utilization factor, in the system light hours, owing to having reduced heat abstractor operating rate, reduce the generation of noise.
(2) operation conditions that the present invention can real-time monitored high voltage converter by monitoring, the temperature range of heat abstractor running frequency parameter and IGBT can arrange according to actual condition, the controllability of raising system, makes that system is more flexible, range of application is more extensive; And by the judgement of running status, send alerting signal when breaking down information, different operation troubles types are carried out different processing, protection system security of operation and do not affect heat abstractor operation when light fault, improves safety, the unfailing performance of system.
(3) the present invention is by carrying out temperature detection to control the heat abstractor operation of high voltage converter to IGBT, and temperature signal is provided by IGBT self, does not need peripheral hardware temperature sensor, and implementation method is simple, can reduce costs that synchronous signal degree of accuracy is high, the linearity good.
Accompanying drawing explanation
Fig. 1 is that the present invention regulates heat dissipating method schematic flow sheet for the intelligence of high voltage converter.
Fig. 2 is that the present invention regulates cooling system structure schematic diagram for the intelligence of high voltage converter.
Fig. 3 is IGBT temperature sampling cellular construction schematic diagram in the present embodiment.
Fig. 4 is data processing unit interface structure schematic diagram in the present embodiment.
Fig. 5 is HMI interactive module interfacial structure schematic diagram in the present embodiment.
Marginal data
1, the first module; 11, IGBT temperature sampling unit; 12, data processing unit; 13, data transmission unit; 2, the second module; 21, control module; 22, communication unit; 3, heat abstractor frequency converter; 4, heat abstractor; 5, HMI interactive module; 51, parameter set unit; 52, display unit.
Embodiment
Below in conjunction with Figure of description, the invention will be further described with concrete preferred embodiment, but protection domain not thereby limiting the invention.
As shown in Figure 1, the present invention regulates heat dissipating method for the intelligence of high voltage converter, and step is:
(1) detect in real time the temperature signal of IGBT, carry out being converted to digital signal output after shaping, filtering;
(2) receive the temperature signal of IGBT and judge, when temperature value is less than or equal to default minimum temperature value, controlling the minimum operation frequency operation of heat abstractor 4 to preset; When temperature value is more than or equal to default maximum temperature value, control the maximum running frequency operation of heat abstractor 4 to preset; When temperature value is between default maximum temperature value and minimum temperature value, according to temperature value, calculate the object run frequency of heat abstractor 4, control heat abstractor 4 and move with object run frequency.
In the present embodiment, pass through to detect the running frequency of the temperature computation heat abstractor 4 of IGBT in high voltage converter, by heat abstractor frequency converter 3 according to the running frequency of the weight control intelligence adjusting heat dissipation device 4 of system loading, can effectively reduce energy resource consumption, improve heat radiation power utilization factor, in the system light hours, owing to having reduced the operating rate of heat abstractor 4, reduce the generation of noise.
The present invention is applicable to the high voltage converter of multiple radiating mode, comprises that super high power regulates pump motor etc. with the high voltage converter of water-cooling pattern heat radiation, is mainly used in the cooling fan that regulates air duct radiation type high voltage converter.
In the present embodiment, to regulate the cooling fan of air duct radiation type high voltage converter to dispel the heat as example, describe, first the maximum running frequency of cooling fan is set within the scope of 50HZ～60HZ, the minimum operation frequency of cooling fan is set within the scope of 30HZ～45HZ, the maximum temperature value of IGBT is set within the scope of 70 ℃～90 ℃, the minimum temperature value of IGBT is set within the scope of 15 ℃～30 ℃, control cooling fan and be operated in certain frequency range, IGBT temperature value is in certain temperature range simultaneously.
In the present embodiment, the detection of IGBT temperature signal is directly completed by the power cell of high voltage converter, power cell inside has temperature test element Rt1 and Rt2, the temperature signal being detected by temperature test element Rt1 and Rt2 is outputting analog signal after the rectification of voltage follower, filtering, carry out exporting after analog to digital conversion, do not need separately to establish the external equipments such as temperature sensor, implementation method is simple, can reduce costs that synchronous signal degree of accuracy is high, the linearity good.
Air cooling system heat radiation formula generally can be expressed as:
△Q=△t×Qf×Cp×ρ （1）
Wherein △ Q is the total loss power of system, and △ t is the temperature difference of air in and outlet, and Qf is total ventilation, the specific heat that Cp is air and for 1005J/kg ℃, the density that ρ is air and be 1.165kg/m
3.
Because △ Q has estimated when the power determination of high voltage converter, can be decided to be constant, △ t and Qf are a funtcional relationship, and △ t parameter is determined by environment temperature and IGBT temperature, Qf parameter is determined by cooling fan rotating speed, during known △ t parameter, just can determine Qf parameter, therefore the temperature value that obtains IGBT by the temperature signal of sampled I GBT just can calculate cooling fan running frequency according to formula (1), control cooling fan travelling speed, realize intelligence and regulate heat radiation, thereby further control IGBT temperature.
During work, temperature test element Rt1 and Rt2 detect the temperature signal of IGBT in real time, according to the IGBT temperature signal value detecting, the running frequency of cooling fan is carried out to linear regulation, when the temperature value of IGBT is more than or equal to default maximum temperature value, control the maximum running frequency operation of cooling fan to set; When the temperature value of IGBT is less than or equal to default minimum temperature value, control the minimum operation frequency operation of cooling fan to set; When the temperature value of IGBT is between default maximum temperature value and minimum temperature value, according to formula (1), calculate the object run frequency of cooling fan, the object run frequency operation of cooling fan to calculate.
In the present embodiment, the adjusting of the running frequency of process cooling fan has changed the temperature of IGBT and environment, if enter thermal equilibrium state, be that IGBT temperature no longer continues to change, need to carry out the control processing under thermal equilibrium state, concrete grammar is: judge that whether Current Temperatures is in thermal equilibrium state, in the time of if yes, the running frequency of controlling cooling fan is constant, be that cooling fan moves with current running frequency, if NO, return to execution step (1), continue detect in real time the temperature signal of IGBT and the running frequency of cooling fan is regulated.
In the present embodiment, the failure operation state of cooling fan is divided into light fault running status and heavy failure operation state, while there is light fault running status, sends early warning information and do not affect the continuation operation of cooling fan, while there is heavy failure operation state, send failure message and control and close IGBT.First setting the IGBT work maximum temperature threshold value allowing is 100 ℃, and early warning temperature range is between 0.9 times (90 ℃) of 100 ℃ of maximum temperature threshold values and maximum temperature threshold value; Judge the current running frequency of heat abstractor 4, if when running frequency is default maximum running frequency, and IGBT temperature is between 90 ℃～100 ℃ and reach thermal equilibrium, is judged to be light fault running status, sends early warning information and also controls heat abstractor 4 and continue operation; If when running frequency is default maximum running frequency, and IGBT temperature more than 100 ℃, judges the failure operation state of attaching most importance in temperature threshold values, sends failure message and also controls IGBT and turn-off.
In the present embodiment; according to malfunction, can also carry out fault masking working time; when reach default time the working time of light fault state; be system long-play at light fault state; control system is closed by correspondence; also can need to control shielding fault according to operating mode, no longer send early warning information and do not carry out shutdown operation, the cooling fan frequency converter that makes to control cooling fan continues operation and does not affect the operation of cooling fan.Once enter light fault running status system, start timing, shutdown system when the time reaches preset value also can shield malfunction early warning information according to arranging simultaneously, and system will stop carrying out timing and not send early warning information and continue to move.
In the present embodiment, can also monitor in real time by other operational factors of detection system the running status of cooling system, when operational parameter value exceedes operational factor preset value, send corresponding early warning information, when there is heavy failure operation state, control IGBT and turn-off, guarantee system security of operation.Operational factor comprises electric current, input power of cooling fan etc.If when operation cooling fan electric current while reaching 1.2 times of rated current, be judged to be light fault running status, send the early warning of fan frequency converter overload, control cooling fan and continue operation; When input power is carried out to Real-Time Monitoring, when supply voltage, appoint two-phase to differ to exceed 10% and send the mutually uneven early warning information of input, when power supply three-phase voltage higher than/lower than 15% of rated voltage, send higher/on the low side early warning information of input voltage, and be judged to be light fault running status; If when operation cooling fan 1.5 times of electric current overrate time, judge the failure operation state of attaching most importance to.For example when determine AC380V power supply reach default load voltage value 115% time, send the higher fault pre-alarming information of input voltage, the duration reach 120 minutes after shutdown system.
In the present embodiment, the temperature value of current I GBT, cooling fan running frequency are shown with form intuitively, to monitor in real time the operation conditions of cooling fan and high voltage converter, realize good interactive function.
As shown in Figure 2, the present invention regulates cooling system for the intelligence of high voltage converter, comprise the first module 1, the second module 2, heat abstractor frequency converter 3 and the heat abstractor 4 that connect successively, wherein heat abstractor 4 adopts cooling fan, heat abstractor frequency converter 3 is cooling fan frequency converter, also comprises the HMI interactive module 5 being connected with the second module 2.The first module 1, for detecting in real time the temperature signal of high voltage converter IGBT, carries out being converted to digital signal output after shaping, filtering.The second module 2, receives the temperature signal of IGBT and judges, when temperature value is less than default minimum temperature value, controls the minimum operation frequency operation of cooling fan to preset; When temperature value is greater than default maximum temperature value, control the maximum running frequency operation of cooling fan to preset; When temperature value is between default maximum temperature value and minimum temperature value, according to temperature value, calculate the object run frequency of cooling fan, control cooling fan and move with object run frequency.HMI interactive module 5 comprises HMI parameter set unit 51 and display unit 52, HMI parameter set unit 51 is used for arranging the highest, the minimum operation frequency of frequency converter and maximum temperature value, the minimum temperature value of IGBT, and display unit 52 is exported real-time cooling fan running frequency, IGBT temperature value.
In the present embodiment, the first module 1 comprises that IGBT temperature sampling unit 11, data processing unit 12 and data transmission unit 13, the second modules 2 comprise control module 21 and communication unit 22.The temperature of IGBT temperature sampling unit 11 sampled I GBT, exports data processing unit 12 to; Data processing unit 12 is converted to digital signal by the IGBT analog temperature signal of input after shaping, filtering, exports data transmission unit 13 to; Data transmission unit 13 is transferred to the second module 2 by the digital temperature signal of input.Control module 21, the temperature signal output control signal of the IGBT exporting according to IGBT temperature sampling unit 11, communication unit 22 is connected with heat abstractor frequency converter 3, and transmission of control signals, to heat abstractor frequency converter 3, is controlled heat abstractor frequency converter 3 and dragged the running frequency that heat abstractor 4 moves.
In the present embodiment, IGBT temperature sampling unit 11 is to be completed by the power cell internal circuit of high voltage converter, and power cell inside has temperature test element Rt1, Rt2.As shown in Figure 3, IGBT temperature sampling cellular construction in the present embodiment, adopt IGBT module to carry temperature sensor, do not need separately to establish detector unit, the temperature analog signal that detection is obtained is sent into data processing unit 12 after by voltage follower AS358A shaping filter and is converted digital signal transfers to data transmission unit 13, by data transmission unit 13, is transmitted.
In the present embodiment, data processing unit 12 adopts TMS320F28016PZA chip, data transmission unit 13 adopts CPLD chip, the ADC interface of the temperature analog signal access TMS320F28016PZA chip that IGBT temperature sampling unit 11 is exported, after converting digital signal to, pass to CPLD chip, CPLD chip is transferred to the second module 2 by optical fiber interface parts.
As shown in Figure 4, data processing unit interface in the present embodiment, the output port of IGBT temperature sampling unit 11 is connected with the ADC pin of TMS320F28016PZA chip (the 16th, 17 pin), and the output terminal of TMS320F28016PZA chip connects CPLD chip.
In the present embodiment, in the second module 2, control module 21 adopts dsp processor, communication unit 22 to adopt fpga chip to realize, by fpga chip, will receive Ge road IGBT temperature signal and be transferred to dsp processor, according to relatively or calculate the object run frequency of cooling fan, control the running frequency of cooling fan, by RS485 communication mode, control signal is transferred to cooling fan frequency converter, controls cooling fan frequency converter and drag cooling fan operation with object run frequency.When dsp processor determines IGBT temperature value and is less than or equal to default minimum temperature value, by fpga chip, send the contactor KM closure that control signal control is connected with cooling fan frequency converter, control cooling fan frequency converter simultaneously and drag cooling fan operation with the minimum operation frequency of presetting; When dsp processor determines IGBT temperature value and is more than or equal to default maximum temperature value, by fpga chip, send control signal control cooling fan frequency converter and drag cooling fan operation with the maximum running frequency of presetting; When dsp processor determines IGBT temperature value when default maximum temperature value is between minimum temperature value, by formula (1), calculate the object run frequency of cooling fan, fpga chip sends control signal control cooling fan frequency converter and drags cooling fan operation with object run frequency.
In the present embodiment, HMI interactive module 5 adopts touch display screen, real-time cooling fan running frequency and IGBT temperature value that the second module 2 is exported intuitively show, and receive that cooling fan is the highest, minimum operation frequency and the maximum temperature value of IGBT, the setting of minimum temperature value.
As shown in Figure 5, the interfacial structure of HMI interactive module, parameter set unit 51 receives the setting of each parameter being carried out according to actual condition, comprises the highest/minimum temperature of IGBT operation, the highest/low-limit frequency of cooling fan operation; Display unit 52 comprises the demonstration of real-time cooling fan running frequency and IGBT temperature value.HMI interactive module 5 also comprises the setting that receives fault masking word, the corresponding light fault Status Type of fault masking word, and during selected fault masking word, selected corresponding light fault state is masked state, makes system continue operation.Fault masking word comprises that input voltage is higher/on the low side, input imbalance, the early warning of fan frequency converter overload etc. mutually.Field working conditions is judged, if occur, input voltage is higher/on the low side, input is mutually during uneven, fan frequency converter overlond running fault, by heat abstractor frequency converter 3, send early warning information, by the selected corresponding fault masking word of HMI interactive module 5, can shield this fault, stop heat abstractor frequency converter 3 and send early warning information and do not carry out shutoff operation when light fault state reaches preset value working time, but make system continue operation.For example AC380V mains supply virtual voltage reach ratings 115% time, heat abstractor frequency converter 3 will send the higher early warning of input voltage, the duration reach 120 minutes after by shutdown system.If after selected " input voltage is higher " fault masking word, fault masking word, in selected state, is controlled early warning information is shielded, and makes system can continue operation and does not carry out shutoff operation, remove after fault masking word selected, proceed the monitoring of input power.
In the present embodiment, current IGBT temperature value and cooling fan running frequency can intuitively be presented on touch display screen in real time, the running frequency of cooling fan is carried out intelligence according to the temperature value of IGBT and is regulated, when temperature value is during less than or equal to default operation minimum temperature (15 ℃～30 ℃), contactor KM closure, cooling fan frequency converter drags cooling fan operation with the minimum operation frequency (30Hz～45Hz) of presetting; When the operation maximum temperature (70 ℃～90 ℃) that temperature value exceedes or equals to preset, cooling fan frequency converter drags cooling fan with the maximum running frequency (50Hz～60Hz) of presetting; When temperature is between default minimum temperature value and maximum temperature value, the frequency of cooling fan frequency converter is carried out linear regulation according to temperature value; Once the thermal equilibrium of entering, cooling fan Frequency Converter Control cooling fan moves with current running frequency.When there is heavy fault in operational process, send corresponding failure message and control shutdown system; When occurring in operational process that light fault is reported to the police, send early warning information, when long-play is during at light fault state, according to operating conditions shutdown system or shield fault by communication mode, make system continue to move.
Above-mentioned is preferred embodiment of the present invention, not the present invention is done to any pro forma restriction.Although the present invention discloses as above with preferred embodiment, but not in order to limit the present invention.Any those of ordinary skill in the art, in the situation that not departing from technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement to make many possible variations and modification to technical solution of the present invention, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not depart from technical solution of the present invention,, all should drop in the scope of technical solution of the present invention protection any simple modification made for any of the above embodiments, equivalent variations and modification according to the technology of the present invention essence.
Claims (10)
1. for the intelligence of high voltage converter, regulate a heat dissipating method, it is characterized in that, step is:
(1) detect in real time the temperature signal of IGBT, carry out being converted to digital signal output after shaping, filtering;
(2) receive the temperature signal of IGBT and judge, when temperature value is less than or equal to default minimum temperature value, controlling the minimum operation frequency operation of heat abstractor (4) to preset; When temperature value is more than or equal to default maximum temperature value, control the maximum running frequency operation of heat abstractor (4) to preset; When temperature value is between default maximum temperature value and minimum temperature value, according to temperature value, calculate the object run frequency of heat abstractor (4), control heat abstractor (4) and move with object run frequency.
2. the intelligence for high voltage converter according to claim 1 regulates heat dissipating method, it is characterized in that, the specific implementation method of described step (1) is: by the temperature of the temperature test element sampled I GBT of the power cell inside of high voltage converter, be converted to digital signal output after voltage follower carries out shaping, filtering.
3. the intelligent temperature control heat dissipating method for high voltage converter according to claim 1, is characterized in that, calculates according to the following formula the object run frequency of heat abstractor (4) in described step (2) according to temperature value:
△Q=△t×Qf×Cp×ρ
Wherein △ Q is the total loss power of system and is constant, △ t is the temperature difference of air in and outlet, by environment temperature and IGBT temperature, determined, Qf is total ventilation, rotating speed by heat abstractor (4) is determined, Cp is the specific heat of air and for 1005J/kg ℃, the density that ρ is air and be 1.165kg/m
3.
4. the intelligence for high voltage converter according to claim 3 regulates heat dissipating method, it is characterized in that, also comprise the control flow under thermal equilibrium state, concrete grammar is: judge that whether current I GBT temperature is in thermal equilibrium state, if yes, the running frequency of controlling heat abstractor (4) is constant, if NO, returns to execution step (1).
5. the intelligence for high voltage converter according to claim 4 regulates heat dissipating method, it is characterized in that, also comprise troubleshooting process, concrete methods of realizing is: the current running frequency that judges heat abstractor (4), if running frequency is default maximum running frequency, and when the temperature of IGBT reaches thermal equilibrium in 90%～100% scope of default maximum temperature threshold value, be judged to be light fault running status, send early warning information and control heat abstractor (4) and continue operation; If running frequency is default maximum running frequency and IGBT temperature while reaching default maximum temperature threshold value, judge the failure operation state of attaching most importance to, send failure message and also control IGBT and turn-off.
6. the intelligence for high voltage converter according to claim 5 regulates heat dissipating method, it is characterized in that, while reaching Preset Time, control the heat abstractor frequency converter (3) of closing IGBT and being connected with heat abstractor (4) working time of described light fault running status; Or working time of described light fault running status while reaching Preset Time, control heat abstractor frequency converter (3) continuation that shielding fault and control is connected with heat abstractor (4) and move.
7. for the intelligence of high voltage converter, regulate a cooling system, comprising:
The first module (1), for detecting in real time the temperature signal of IGBT, carries out being converted to digital signal output after shaping, filtering;
The second module (2), receives the temperature signal of IGBT and judges, when temperature value is less than or equal to default minimum temperature value, controls the minimum operation frequency operation of heat abstractor (4) to preset; When temperature value is more than or equal to default maximum temperature value, control the maximum running frequency operation of heat abstractor (4) to preset; When temperature value is between default maximum temperature value and minimum temperature value, according to temperature value, calculate the object run frequency of heat abstractor (4), control heat abstractor (4) and move with object run frequency.
8. the intelligence for high voltage converter according to claim 7 regulates cooling system, it is characterized in that: described the first module (1) comprises the IGBT temperature sampling unit (11), data processing unit (12) and the data transmission unit (13) that connect successively; The temperature of described IGBT temperature sampling unit (11) sampled I GBT, exports data processing unit (12) to; Described data processing unit (12) is converted to digital signal by the IGBT analog temperature signal of input after shaping, filtering, exports data transmission unit (13) to; Described data transmission unit (13) is transferred to the second module (2) by the digital temperature signal of input.
9. the intelligence for high voltage converter according to claim 7 regulates cooling system, it is characterized in that: described the second module (2) comprises control module (21) and the communication unit (22) of connection, the other end of described communication unit (22) connects heat abstractor frequency converter (3); Described control module (21) is according to the temperature signal output control signal of the IGBT of the first module (1) output, and described communication unit (22) transmission of control signals, to heat abstractor frequency converter (3), is controlled the running frequency of heat abstractor (4).
10. according to the intelligence for high voltage converter described in claim 7～9 any one, regulate cooling system, it is characterized in that: also comprise the HMI interactive module (5) being connected with the second module (2), described HMI interactive module (5) comprises parameter set unit (51) and display unit (52), and described parameter set unit (51) is used for arranging maximum temperature value, the minimum temperature value of maximum running frequency, minimum operation frequency and the IGBT of heat abstractor (4); Described display unit (52) is used for exporting real time execution frequency and the IGBT temperature value of the second module (2).
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950946A (en) * | 2014-07-29 | 2015-09-30 | 希望森兰科技股份有限公司 | Heat radiation control system of high-voltage frequency converter |
| CN105179282A (en) * | 2015-07-13 | 2015-12-23 | 广东明阳龙源电力电子有限公司 | SVG fan energy consumption reduction method |
| CN105549560A (en) * | 2015-12-29 | 2016-05-04 | 上海爱知锻造有限公司 | Method with intermediate frequency temperature control production technology |
| CN108335857A (en) * | 2018-02-05 | 2018-07-27 | 河南丰源电力科技有限公司 | A kind of heat dissipation type intelligent transformer and potential device |
| CN108872825A (en) * | 2018-05-09 | 2018-11-23 | 浙江埃菲生能源科技有限公司 | A kind of high-power IGBT module on-line testing method |
| CN112822916A (en) * | 2020-12-30 | 2021-05-18 | 徐州中矿大传动与自动化有限公司 | Heat dissipation control method and device for large electromechanical equipment |
| CN113790096A (en) * | 2021-11-18 | 2021-12-14 | 山西凯嘉煤层气发电有限公司 | Operation control method for variable frequency fan of gas generator set |
| CN114242489A (en) * | 2021-11-01 | 2022-03-25 | 中国长江三峡集团有限公司 | Distributed modulation type forced air cooling method of solid-state direct-current circuit breaker |
| CN115050710A (en) * | 2022-08-15 | 2022-09-13 | 深圳市威兆半导体股份有限公司 | Heat dissipation device and heat dissipation method of MOSFET of frequency converter |
| CN116545243A (en) * | 2023-07-06 | 2023-08-04 | 深圳市小耳朵电源有限公司 | Industrial power supply system with heat dissipation structure and control method thereof |
| CN117093039A (en) * | 2023-10-18 | 2023-11-21 | 南通西塔自动化科技有限公司 | Water-cooling heat dissipation control method and system for frequency converter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950946A (en) * | 2014-07-29 | 2015-09-30 | 希望森兰科技股份有限公司 | Heat radiation control system of high-voltage frequency converter |
| CN105179282A (en) * | 2015-07-13 | 2015-12-23 | 广东明阳龙源电力电子有限公司 | SVG fan energy consumption reduction method |
| CN105549560A (en) * | 2015-12-29 | 2016-05-04 | 上海爱知锻造有限公司 | Method with intermediate frequency temperature control production technology |
| CN108335857A (en) * | 2018-02-05 | 2018-07-27 | 河南丰源电力科技有限公司 | A kind of heat dissipation type intelligent transformer and potential device |
| CN108872825A (en) * | 2018-05-09 | 2018-11-23 | 浙江埃菲生能源科技有限公司 | A kind of high-power IGBT module on-line testing method |
| CN108872825B (en) * | 2018-05-09 | 2020-11-17 | 浙江埃菲生能源科技有限公司 | Online testing method for high-power IGBT module |
| CN112822916A (en) * | 2020-12-30 | 2021-05-18 | 徐州中矿大传动与自动化有限公司 | Heat dissipation control method and device for large electromechanical equipment |
| CN112822916B (en) * | 2020-12-30 | 2022-07-22 | 徐州中矿大传动与自动化有限公司 | Heat dissipation control method and device for large electromechanical equipment |
| CN114242489A (en) * | 2021-11-01 | 2022-03-25 | 中国长江三峡集团有限公司 | Distributed modulation type forced air cooling method of solid-state direct-current circuit breaker |
| CN113790096A (en) * | 2021-11-18 | 2021-12-14 | 山西凯嘉煤层气发电有限公司 | Operation control method for variable frequency fan of gas generator set |
| CN115050710A (en) * | 2022-08-15 | 2022-09-13 | 深圳市威兆半导体股份有限公司 | Heat dissipation device and heat dissipation method of MOSFET of frequency converter |
| CN116545243A (en) * | 2023-07-06 | 2023-08-04 | 深圳市小耳朵电源有限公司 | Industrial power supply system with heat dissipation structure and control method thereof |
| CN116545243B (en) * | 2023-07-06 | 2024-02-13 | 深圳市小耳朵电源有限公司 | Industrial power supply system with heat dissipation structure and control method thereof |
| CN117093039A (en) * | 2023-10-18 | 2023-11-21 | 南通西塔自动化科技有限公司 | Water-cooling heat dissipation control method and system for frequency converter |
| CN117093039B (en) * | 2023-10-18 | 2023-12-26 | 南通西塔自动化科技有限公司 | Water-cooling heat dissipation control method and system for frequency converter |
| CN117177547A (en) * | 2023-11-02 | 2023-12-05 | 江苏力普通瑞电力电子科技有限公司 | Heat dissipation control method and system for high-voltage frequency converter |
| CN117177547B (en) * | 2023-11-02 | 2024-04-05 | 江苏力普通瑞电力电子科技有限公司 | Heat dissipation control method and system for high-voltage frequency converter |
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