CN106438433B - The control method for fan and device of a kind of inverter - Google Patents
The control method for fan and device of a kind of inverter Download PDFInfo
- Publication number
- CN106438433B CN106438433B CN201610986869.7A CN201610986869A CN106438433B CN 106438433 B CN106438433 B CN 106438433B CN 201610986869 A CN201610986869 A CN 201610986869A CN 106438433 B CN106438433 B CN 106438433B
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- Prior art keywords
- fan
- speed
- rotation speed
- inverter
- rotating speed
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20209—Thermal management, e.g. fan control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/303—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/70—Type of control algorithm
- F05D2270/701—Type of control algorithm proportional
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/70—Type of control algorithm
- F05D2270/703—Type of control algorithm integral
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/70—Type of control algorithm
- F05D2270/705—Type of control algorithm proportional-integral
Abstract
The invention discloses a kind of control method for fan of inverter, the power of current inverter and the temperature preset value of cooled power device are merged into the control of rotation speed of the fan, make inverter below the first temperature preset value, fan can obtain the first rotation speed of the fan instruction related to realtime power.When the maximum temperature of cooled power device exceedes second temperature preset value, then using second temperature preset value as target, the second rotation speed of the fan is formed by thermoregulator and instructed, closed-loop control is carried out with the temperature to the power device that is cooled.The instruction of first rotation speed of the fan forms rotation speed of the fan driving instruction after being added with the instruction of the second rotation speed of the fan.Present invention additionally comprises device corresponding to the control method for fan.Instructed by the first rotation speed of the fan, be avoided that during invertor operation because the temperature of power device is not up to preset value can not starting fan, inverter is constantly in the state for being heated baking；By the second rotation speed of the fan instruct, make fan on the basis of the first rotation speed of the fan, be superimposed because temperature rise and caused by incremental speed, the rotating speed can according to environment temperature adjust automatically.
Description
Technical field
The invention belongs to inverter technology field, the control method for fan and device of inverter are related specifically to.
Background technology
Fan coolling be passed through in inverter frequently with a kind of high performance-price ratio radiating mode, equipment power dissipation and made an uproar to reduce
Sound, speed-regulating fan can be used.In general, then air quantity is big for rotation speed of the fan height, but can increase the power consumption and noise of fan, and reduces wind
Fan service life；The low then air quantity of rotation speed of the fan is small, and inverter temperature is high, will reduce the bulk life time of inverter.In addition, inverter
Temperature it is also affected by the ambient temperature, under identical invertor operation operating mode, with the increase of environment temperature, it is also desirable to carry
High rotation speed of the fan is to reduce inverter temperature., it is necessary to input or output work to inverter when fan running speed reaches the upper limit
Rate carries out drop volume processing, and heating is reduced to reduce the loss of inverter.
[CN 100403202C fan rotational frequency control methods and device] discloses the control program of rotation speed of the fan, by right
Increase Redundant Control on fan control path or monitoring means, the reliability for improving fan control system are low.But fan is turned
The determination of speed does not provide embodiment.
[a kind of fan rotational frequency control methods of the B of CB 101876320 and equipment] disclose it is a kind of by control method for fan,
Target temperature is determined according to environment temperature, rotation speed of the fan adjusted value is then obtained by adjuster.But the running temperature of inverter
It is not only relevant with environment temperature, also determined by the current working condition of inverter (power, busbar voltage etc.).Pass through environment temperature
Pre-set target temperature, in environment temperature wide variation, it is necessary to store a large amount of preset temperature data, this method is simultaneously dumb,
It should not be used in the big occasion of the link temperature change such as outdoor.
[fan speed-governing method in CN201410403089.6- inverters] discloses one kind by pi regulator to fan
Rotating speed carries out the control method of closed-loop control, but does not account for the influence that power generates heat inverter.
Inverter based on fan coolling, it usually needs Duct design is carried out, in the case where fan does not rotate, air channel
Presence will influence heat dispersion.But in actual motion, if measured device temperature is not reaching to preset temperature value, fan is not
Start；In this case, the radiating condition of heater element is poor, and device is constantly in the state of being baked, and influences it and uses the longevity
Life.Currently used control method for fan, otherwise rotation speed of the fan is determined according to present output power or electric current, or according to tested
The real time temperature of device carries out temperature closed loop or opened loop control.Optimal solution can not be obtained here it is above mentioned problem.This
The inverter of Invention Announce, fan speed-governing method is combined with the real time temperature of invertor operation power, power device, obtained
Rotation speed of the fan instructs；Further, if rotation speed of the fan reaches the upper limit, or actual rotation speed of the fan exceeds command value, then need into
The processing of row power deratng.
The content of the invention
The purpose of the present invention be for problems of the prior art provide a kind of control method for fan of inverter with
Device, the temperature of invertor operation power and measured device is combined, efficiently solve tradition because of measured device temperature not
The situation that fan does not start when reaching preset temperature value, while and can reduces the loss of fan rotation as far as possible.
To realize the above-mentioned purpose of the present invention, a kind of inverter control method for fan of offer of the invention, methods described is retouched
State as follows：
A kind of control method for fan of inverter, the instruction of the first rotation speed of the fan is obtained by the first rotary speed instruction generation module,
The instruction of second rotation speed of the fan is obtained by the second rotating speed generation module, the instruction of the first rotation speed of the fan is instructed into phase with the second rotation speed of the fan
After adding, rotation speed of the fan driving instruction is obtained.
The first rotary speed instruction generation module, fan is calculated according to inverter realtime power as follows and turned
Fast power mapping value：
N1LimUp is the first rotating speed upper limit in formula, and N1LimDn is the first lower rotation speed limit, and PwrCal is the real-time work(of inverter
Rate, PwrRated are the rated power of inverter, and NFan1 instructs for the first rotation speed of the fan；
The rotation speed of the fan power mapping value delivers to rotating speed switching switch after the first rotating speed amplitude limit；
The lower limit set of first rotating speed amplitude limit is in the first lower rotation speed limit, and its upper limit is set in the first rotating speed upper limit, first turn
Fast lower limit is more than or equal to the minimum speed that fan is capable of stable operation, and the first rotating speed upper limit, which is less than or equal to fan, allows operation most
High rotating speed；
The rotating speed switching switch, when the maximum temperature of cooled power device is more than or equal to the first temperature preset value,
The first rotation speed of the fan instruction is directly equal to the output of the first rotating speed amplitude limit；When maximum temperature is less than the first temperature preset value
When, the first rotation speed of the fan instruction is arranged to zero；
Above-mentioned second rotary speed instruction generation module, by the maximum temperature of cooled power device and second temperature preset value phase
The conditioned device of difference after subtracting, rotation speed of the fan temperature respective value is obtained, then after the second rotating speed amplitude limit, obtain the second wind
Fan rotary speed instruction.
Described thermoregulator can be with adoption rate integration control, integration control, proportional controlling means.
The lower limit of second rotating speed amplitude limit is set as 0, and its higher limit is set as that fan is capable of the maximum speed of stable operation
With the difference of the first rotating speed upper limit.It is pointed out that the first temperature preset value is less than second temperature preset value.
To realize the above-mentioned purpose of the present invention, a kind of inverter fan control device of offer of the invention, described device bag
Include：
A kind of fan governor of inverter, including power computation module, maximum temperature determination module, its feature also include
First rotary speed instruction generation module, the second rotary speed instruction generation module, summer；
The output end of power computation module is connected with the input of the first rotary speed instruction generation module, and maximum temperature judges mould
The output end of block is connected with the input of the second rotary speed instruction generation module, the first rotary speed instruction generation module output end and second
The output end of rotary speed instruction generation module is all connected with summer, and it exports rotation speed of the fan instruction control fan operation；
The first rotary speed instruction generation module is switched by rotating speed conversion module, the first rotating speed clipping module and rotating speed to be switched
Sequential series form；
The second rotary speed instruction generation module is by subtracter, thermoregulator and the second rotating speed clipping module sequential series
Form.
Said temperature adjuster can be pi controller, integral controller, proportional controller.
The method have the characteristics that：The performance number and preset temperature that current inverter has been merged in the control of rotation speed of the fan are set
Definite value.When the maximum temperature of cooled power device is less than between the first temperature preset value and second temperature preset value, fan
The rotating speed proportional to power can be obtained；Avoiding problems during invertor operation, the maximum temperature of cooled power device does not have
There is the problem of when reaching second temperature preset value, fan can not start.Further, in order to reduce the unnecessary operating of fan,
The first temperature preset value is set, when the maximum temperature of cooled power device is less than the first temperature preset value, fan stalling,
So as to effectively save power consumption.
Brief description of the drawings
It is attached to being used needed for embodiment description below for the technical scheme of the clearer explanation embodiment of the present invention
Figure does simple introduction.Drawings in the following description are only some embodiments of the present invention, for the ordinary skill people of this area
For member, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these figures.
Fig. 1 is the generation schematic diagram of rotation speed of the fan driving instruction in the embodiment of the present invention；
Fig. 2 is that the first rotation speed of the fan of fan in the embodiment of the present invention instructs generation method figure；
Fig. 3 is that the second rotation speed of the fan of fan in the embodiment of the present invention instructs generation method figure；
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is described；Institute
The embodiment of description is only an embodiment of the present invention, rather than whole embodiments.Based on embodiments of the invention, ability
The every other embodiment that the those of ordinary skill in domain is obtained under the premise of creative work is not made, belongs to the present invention
Protection domain.
Present example provides a kind of inverter control method for fan and device, realizes the tune by rotation speed of the fan
Section, the purpose of inverter heat control is reached.The present invention has merged the power of current inverter in the control of rotation speed of the fan
Value and preset temperature setting value.The invention can either ensure the radiating of inverter, while can also keep fan in reasonable interval
Interior operation, improve inverter system operational efficiency and extend fan life.
As shown in figure 1, the present invention implements a kind of control method for fan of photovoltaic DC-to-AC converter, technical scheme includes：
The first rotation speed of the fan command N Fan1Cmd is obtained by the first rotary speed instruction generation module, is generated according to the second rotating speed
Module obtains the second rotation speed of the fan command N Fan2Cmd, and the first rotation speed of the fan command N Fan1Cmd and the second rotation speed of the fan are instructed
After NFan2Cmd is added, rotation speed of the fan driving instruction NFanCmd is obtained.
It can be seen that the generation scheme of rotation speed of the fan instruction of the invention includes two rotating speed generation instructions, the two instructions point
It is not corresponding to be and the mapping of the rotation speed of the fan of the proportional relation of power and the temperature closed loop adjusting method relevant with preset temperature value.
The former makes fan obtain the rotating speed proportional to power, avoiding problems during invertor operation, because of the measured power device highest temperature
Degree be not up to preset temperature when can not driving fan situation；The latter is then instructed according to preset temperature, and rotation speed of the fan is carried out certainly
Dynamic regulation, optimizes fan running speed, reduces inverter losses.
To be expanded on further, the generating mode of the first rotary speed instruction and the second rotary speed instruction is illustrated separately below.
As shown in Fig. 2 the first rotary speed instruction generation module, it obtains the real-time work(of inverter according to power computation module
Rate PwrCal, rotation speed of the fan power mapping value NFan1 is obtained after inverter realtime power PwrCal is sent into rotating speed conversion module,
The value is sent into after the first rotating speed clipping module switches switch by the rotating speed that is determined with the first temperature preset value, so as to obtain the
One rotation speed of the fan command N Fan1Cmd.
Above-mentioned rotating speed conversion module, can be described as with mathematic(al) representation
N1LimUp is the first rotating speed upper limit in formula, and N1LimDn is the first lower rotation speed limit, and PwrCal is the real-time work(of inverter
Rate, PwrRated are the rated power of inverter.It should be noted that N1LimUp, N1LimDn and NFan1 are perunit value；
PwrCal is famous value, and PwrRated is the famous value of inverter rated power.
According to the present invention, the rotation speed of the fan power mapping value NFan1 of above-mentioned gained need to be further across the first rotating speed amplitude limit
Afterwards, NFan1 upper and lower bound value is set；Wherein, the first lower rotation speed limit N1LimDn is more than or equal to fan and can stablized
The minimum speed of operation, the first rotating speed upper limit N1LimUp are less than or equal to the maximum speed that fan allows operation；
Also need to enter rotating speed switching switch by the rotation speed of the fan after the first rotating speed amplitude limit；The rotating speed switching switchs its work
Operation mode is first wind when the maximum temperature TfbkMax of cooled power device is more than or equal to the first temperature preset value
Fan rotary speed instruction NFan1Cmd is directly equal to the output of the first rotating speed amplitude limit；When maximum temperature is less than the first temperature preset value,
The first rotation speed of the fan command N Fan1Cmd is arranged to zero.
By the above method, the first rotation speed of the fan command N Fan1Cmd generation is just completed.
Shown in Fig. 3 is the generation method of the second rotation speed of the fan instruction, is obtained as seen from the figure according to maximum temperature determination module
The maximum temperature TfbkMax of measured device is taken, by maximum temperature TfbkMax compared with second temperature preset value Tth2, its
For difference by thermoregulator, the output result of thermoregulator obtains the instruction of the second rotation speed of the fan after being sent into the second rotating speed amplitude limit
NFan2Cmd.The thermoregulator, can be with adoption rate integration control, integration control, proportional controlling means.
Above-mentioned second rotating speed amplitude limit is characterized in that the lower limit of the second rotating speed amplitude limit is set as 0, and its higher limit is set as wind
Fan is capable of the maximum speed of stable operation and the difference of the first rotating speed upper limit.
It need to be noted that be that the first temperature preset value is less than second temperature preset value.
The invention provides a kind of fan control device of photovoltaic DC-to-AC converter, the device includes power computation module, most
High-temperature determination module, the first rotary speed instruction generation module, the second rotary speed instruction generation module, summer；
The output end of power computation module is connected with the input of the first rotary speed instruction generation module, and maximum temperature judges mould
The output end of block is connected with the input of the second rotary speed instruction generation module, the first rotary speed instruction generation module output end and second
The output end of rotary speed instruction generation module is all connected with summer, and it exports rotation speed of the fan instruction control fan operation；
The first rotary speed instruction generation module is switched by rotating speed conversion module, the first rotating speed clipping module and rotating speed to be switched
Sequential series form；
The second rotary speed instruction generation module is by subtracter, thermoregulator and the second rotating speed clipping module sequential series
Form
It should be noted that device embodiment of the present invention, is obtained based on the embodiment of the method shown in Fig. 1；
By the device, can be good at realizing control method for fan of the present invention.
One of ordinary skill in the art will appreciate that realize all or part of flow in examples detailed above method, being can be with
Completed by computer program to instruct the hardware of correlation, described program can be stored in readable media, the program
Upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein reading medium includes disk, CD, read-only storage
Device or random access memory etc..
It is described above, it is only the preferable embodiment of the present invention, but protection scope of the present invention is not limited to this, and it is any ripe
Know those skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in, all should
Cover within the scope of the present invention.Therefore, protection scope of the present invention should be defined by the protection domain of claim.
Claims (7)
- A kind of 1. control method for fan of inverter, it is characterised in that：The instruction of first rotation speed of the fan is obtained by the first rotary speed instruction generation module, second is obtained by the second rotary speed instruction generation module Rotation speed of the fan instructs, and after the instruction of the first rotation speed of the fan is added with the instruction of the second rotation speed of the fan, obtains rotation speed of the fan driving instruction；The first rotary speed instruction generation module, rotation speed of the fan power is calculated by inverter realtime power as follows Mapping value：<mrow> <mi>N</mi> <mi>F</mi> <mi>a</mi> <mi>n</mi> <mn>1</mn> <mo>=</mo> <mrow> <mo>(</mo> <mi>N</mi> <mn>1</mn> <mi>L</mi> <mi>i</mi> <mi>m</mi> <mi>U</mi> <mi>p</mi> <mo>-</mo> <mi>N</mi> <mn>1</mn> <mi>L</mi> <mi>i</mi> <mi>m</mi> <mi>D</mi> <mi>n</mi> <mo>)</mo> </mrow> <mo>&times;</mo> <mfrac> <mrow> <mi>P</mi> <mi>w</mi> <mi>r</mi> <mi>C</mi> <mi>a</mi> <mi>l</mi> </mrow> <mrow> <mi>P</mi> <mi>w</mi> <mi>r</mi> <mi>R</mi> <mi>a</mi> <mi>t</mi> <mi>e</mi> <mi>d</mi> </mrow> </mfrac> <mo>+</mo> <mi>N</mi> <mn>1</mn> <mi>L</mi> <mi>i</mi> <mi>m</mi> <mi>D</mi> <mi>n</mi> </mrow>In formula, N1LimUp is the first rotating speed upper limit, and N1LimDn is the first lower rotation speed limit, and PwrCal is inverter realtime power, PwrRated is the rated power of inverter, and NFan1 instructs for the first rotation speed of the fan；The rotation speed of the fan power mapping value delivers to rotating speed switching switch after the first rotating speed amplitude limit；The rotating speed switching switch, it is described when the maximum temperature of cooled power device is more than or equal to the first temperature preset value First rotation speed of the fan instructs the output for being directly equal to the first rotating speed amplitude limit；When maximum temperature is less than the first temperature preset value, institute State the instruction of the first rotation speed of the fan and be arranged to zero；The second rotary speed instruction generation module, after the maximum temperature of cooled power device and second temperature preset value are subtracted each other The conditioned device of difference, obtain rotation speed of the fan temperature respective value, then after the second rotating speed amplitude limit, obtain the second fan and turn Speed instruction.
- 2. the control method for fan of inverter as claimed in claim 1, is further characterized in that：For the lower limit set of first rotating speed amplitude limit in the first lower rotation speed limit, its upper limit is set in the first rotating speed upper limit, under the first rotating speed Limit is more than or equal to the minimum speed that fan is capable of stable operation, and the first rotating speed upper limit, which is less than or equal to fan, allows the highest of operation to turn Speed.
- 3. the control method for fan of inverter as claimed in claim 1, is further characterized in that：The lower limit of second rotating speed amplitude limit is set as 0, and its higher limit is set as that fan is capable of the maximum speed and of stable operation The difference of the one rotating speed upper limit.
- 4. the control method for fan of inverter as claimed in claim 1, is further characterized in that：First temperature preset value is less than second temperature preset value.
- 5. the control method for fan of inverter as claimed in claim 1, is further characterized in that：The method of thermoregulator adoption rate integration control, integration control or ratio control carries out temperature adjustment control.
- 6. a kind of fan control device of inverter, including power computation module, maximum temperature determination module,It is characterized in that：Also include the first rotary speed instruction generation module, the second rotary speed instruction generation module, summer；The output end of power computation module is connected with the input of the first rotary speed instruction generation module, maximum temperature determination module Output end is connected with the input of the second rotary speed instruction generation module, the first rotary speed instruction generation module output end and the second rotating speed The output end of directive generation module is all connected with summer, and it exports rotation speed of the fan instruction control fan operation；The first rotary speed instruction generation module switches switching sequence by rotating speed conversion module, the first rotating speed clipping module and rotating speed It is in series；The second rotary speed instruction generation module by subtracter, thermoregulator and the second rotating speed clipping module sequential series and Into.
- 7. the fan control device of inverter as claimed in claim 6, is further characterized in that：The thermoregulator is ratio Integral controller, integral controller or proportional controller.
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| CN107889434B (en) * | 2017-12-19 | 2020-07-31 | 中车株洲电力机车有限公司 | Hybrid cooling system of traction inverter of railway vehicle and control method thereof |
| CN108915840B (en) * | 2018-07-10 | 2020-07-07 | 中车大连机车车辆有限公司 | Cooling water temperature control method, device and system |
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