CN106438433A - Inverter fan control method and device - Google Patents
Inverter fan control method and device Download PDFInfo
- Publication number
- CN106438433A CN106438433A CN201610986869.7A CN201610986869A CN106438433A CN 106438433 A CN106438433 A CN 106438433A CN 201610986869 A CN201610986869 A CN 201610986869A CN 106438433 A CN106438433 A CN 106438433A
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- Prior art keywords
- fan
- rotating speed
- speed
- inverter
- instruction
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Classifications
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- 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
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses an inverter fan control method. Due to control over the rotating speed of a fan, the power of a current inverter and a temperature preset value of a cooled power device are integrated, when the inverter is at the first temperature preset value, the fan can obtain a first fan rotating speed instruction related to the real-time power. When the highest temperature of the cooled power device is larger than the second temperature preset value, a second temperature preset value is adopted as a target, and a second fan rotating speed instruction is formed through a temperature regulator so as to perform closed-ring control over the temperature of the cooled power device. After the first fan rotating speed instruction and the second fan rotating speed instruction are added, a fan rotating speed driving instruction is formed. The invention further provides a device corresponding to the fan control method. On the basis of the first fan rotating speed instruction, the phenomena that when the temperature of the power device does not reach the preset value during operation of the inverter, the fan cannot be started and the inverter is in the heated and baked state all the time can be avoided; on the basis of the second fan rotating speed instruction, the fan can overlay rotating speed increment generated by increase of the temperature on the basis of the first fan rotating speed, and the rotating speed can be automatically adjusted according to environmental temperature.
Description
Technical field
The invention belongs to inverter technology field, is related specifically to control method for fan and the device of inverter.
Background technology
Fan coolling be in inverter through frequently with a kind of high performance-price ratio radiating mode, be to reduce equipment power dissipation and to make an uproar
Sound, can adopt speed-regulating fan.General, the high then air quantity of rotation speed of the fan is big, but can increase power consumption and the noise of fan, and reduces wind
Fan service life；The low then air quantity of rotation speed of the fan is little, inverter temperature height, will reduce the bulk life time of inverter.Additionally, inverter
Temperature also affected by the ambient temperature, under identical invertor operation operating mode, with the increase of ambient temperature, it is also desirable to carry
High rotation speed of the fan is to reduce inverter temperature.When fan running speed reaches the upper limit, the input to inverter or output work is needed
Rate carries out drop volume process, to reduce the loss of inverter so as to reduce heating.
[CN 100403202C fan rotational frequency control method and device] discloses the control program of rotation speed of the fan, by right
Increase Redundant Control or monitoring means on fan control path, the reliability for improving fan control system is low.But fan is turned
The determination of speed does not provide embodiment.
[a kind of fan rotational frequency control method of 101876320 B of CB and equipment] discloses one kind by control method for fan,
Target temperature is determined according to ambient temperature, then rotation speed of the fan adjusted value is obtained by actuator.But the running temperature of inverter
Not only relevant with ambient temperature, also determined by the current working condition of inverter (power, busbar voltage etc.).By ambient temperature
Pre-set target temperature, in ambient temperature wide variation, needs to store a large amount of preset temperature data, and the method is simultaneously dumb,
Should not use in the big occasion of the link temperature change such as outdoor.
[fan speed-governing method in CN201410403089.6- inverter] discloses a kind of by pi regulator to fan
Rotating speed carries out the control method of closed loop control, but does not account for the impact that power generates heat to inverter.
Based on fan-cooled inverter, it usually needs carry out Duct design, in the case that fan does not rotate, air channel
Presence will affect 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 affects which to use the longevity
Life.The control method for fan that commonly uses at present, or determining rotation speed of the fan 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.Here it is the problems referred to above cannot obtain optimal solution.This
The inverter of Invention Announce, fan speed-governing method is combined with the real time temperature of invertor operation power, power device, is obtained
Rotation speed of the fan is instructed；Further, if rotation speed of the fan reaches the upper limit, or actual rotation speed of the fan exceeds command value, then need into
Row power deratng is processed.
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, and efficiently solves tradition because of measured device temperature not
The situation that when reaching preset temperature value, fan does not start, while can reduce the loss of fan rotation as far as possible again.
For realizing the above-mentioned purpose of the present invention, a kind of inverter control method for fan of the offer of the present invention, methods described is retouched
State as follows：
A kind of control method for fan of inverter, obtains the instruction of the first rotation speed of the fan 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 and the second rotation speed of the fan are instructed phase
Plus after, obtain rotation speed of the fan driving instruction.
The first rotary speed instruction generation module, is calculated fan as follows according to inverter realtime power and turns
Fast power mapping value：
In formula, N1LimUp is the first rotating speed upper limit, and it is the real-time work(of inverter that N1LimDn is the first lower rotation speed limit, PwrCal
Rate, PwrRated is the rated power of inverter, and NFan1 is instructed 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 the 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 capable of the minimum speed of stable operation more than or equal to fan, and the first rotating speed upper limit allows operation most less than or equal to fan
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 set 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, obtains rotation speed of the fan temperature respective value, then after the second rotating speed amplitude limit, obtains 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 the 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
Difference with the first rotating speed upper limit.It is pointed out that the first temperature preset value is less than second temperature preset value.
For realizing the above-mentioned purpose of the present invention, a kind of inverter fan control device of the offer of the present invention, described device bag
Include：
A kind of fan governor of inverter, including power computation module, maximum temperature determination module, its feature also includes
First rotary speed instruction generation module, the second rotary speed instruction generation module, summer；
The outfan of power computation module is connected with the input of the first rotary speed instruction generation module, and maximum temperature judges mould
The outfan of block is connected with the input of the second rotary speed instruction generation module, the first rotary speed instruction generation module outfan and second
The outfan of rotary speed instruction generation module is all connected with summer, its output rotation speed of the fan instruction control fan operation；
The first rotary speed instruction generation module is by rotating speed conversion module, the first rotating speed clipping module and rotating speed switching switch
Sequential series are formed；
The second rotary speed instruction generation module is by subtractor, thermoregulator and the second rotating speed clipping module sequential series
Form.
Said temperature actuator can be pi controller, integral controller, proportional controller.
The method have the characteristics that：The performance number of current inverter is merged in the control of rotation speed of the fan and preset temperature has 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
It is obtained in that the rotating speed proportional to power；When avoiding problems invertor operation, the maximum temperature of cooled power device does not have
Have when reaching second temperature preset value, the problem that fan cannot start.Further, the operating unnecessary in order to reduce 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 is stalled,
So as to effectively save power consumption.
Description of the drawings
For the technical scheme of the clearer explanation embodiment of the present invention, attached to used needed for embodiment description below
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 the first rotation speed of the fan instruction generation method figure of fan in the embodiment of the present invention；
Fig. 3 is the second rotation speed of the fan instruction generation method figure of fan in the embodiment of the present invention；
Specific 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 obtained under the premise of creative work is not made by the those of ordinary skill in domain, belongs to the present invention
Protection domain.
Present example provides a kind of inverter control method for fan and device, it is achieved that by the tune of rotation speed of the fan
Section, has reached the purpose of inverter heat control.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, improves inverter system operational efficiency and extends 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 through the first rotary speed instruction generation module, 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 the rotation speed of the fan instruction of the present invention includes two rotating speeds and generates instruction, the two instructions point
Not corresponding is to map with the rotation speed of the fan of the proportional relation of power and the temperature closed loop control method relevant with preset temperature value.
The former makes fan obtain the rotating speed proportional to power, when avoiding problems invertor operation, because of the measured power device highest temperature
Degree cannot drive the situation of fan when being not up to preset temperature；The latter is then instructed according to preset temperature, rotation speed of the fan is carried out certainly
Dynamic regulation, optimizes fan running speed, reduces inverter losses.
For being expanded on further, separately below the generating mode of the first rotary speed instruction and the second rotary speed instruction is illustrated.
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, inverter realtime power PwrCal is sent into after rotating speed conversion module and obtains rotation speed of the fan power mapping value NFan1,
The value is sent into by the rotating speed switching switch for being determined with the first temperature preset value, so as to obtain the after the first rotating speed clipping module
One rotation speed of the fan command N Fan1Cmd.
Above-mentioned rotating speed conversion module, can be described as with mathematic(al) representation
In formula, N1LimUp is the first rotating speed upper limit, and it is the real-time work(of inverter that N1LimDn is the first lower rotation speed limit, PwrCal
Rate, PwrRated is the rated power of inverter.It should be noted that N1LimUp, N1LimDn and NFan1；
PwrCal is famous value, and PwrRated is the famous value of inverter rated power.
According to the present invention, 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, the upper and lower bound value of NFan1 is set；Wherein, the first lower rotation speed limit N1LimDn can stablize more than or equal to fan
The minimum speed of operation, first rotating speed upper limit N1LimUp allows the maximum speed of operation less than or equal to fan；
Rotation speed of the fan after the first rotating speed amplitude limit also needs to enter rotating speed switching switch；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,
First rotation speed of the fan command N Fan1Cmd is set to zero.
Through said method, the generation of the first rotation speed of the fan command N Fan1Cmd is just completed.
Shown in Fig. 3 is the generation method of the second rotation speed of the fan instruction, is obtained according to maximum temperature determination module as seen from the figure
The maximum temperature TfbkMax of measured device is taken, maximum temperature TfbkMax is compared with second temperature preset value Tth2, its
Difference passes through thermoregulator, and the output result of thermoregulator obtains the instruction of the second rotation speed of the fan after sending 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 the first temperature preset value 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 outfan of power computation module is connected with the input of the first rotary speed instruction generation module, and maximum temperature judges mould
The outfan of block is connected with the input of the second rotary speed instruction generation module, the first rotary speed instruction generation module outfan and second
The outfan of rotary speed instruction generation module is all connected with summer, its output rotation speed of the fan instruction control fan operation；
The first rotary speed instruction generation module is by rotating speed conversion module, the first rotating speed clipping module and rotating speed switching switch
Sequential series are formed；
The second rotary speed instruction generation module is by subtractor, 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 realizing all or part of flow process in examples detailed above method, it is permissible
Instruct what related hardware was completed by computer program, described program can be stored in readable media, the program
Upon execution, it may include as the flow process of the embodiment of above-mentioned each method.Wherein reading medium includes disk, CD, read-only storage
Device or random access memory etc..
The above, the only present invention preferably embodiment, but protection scope of the present invention is not limited to this, and any ripe
Know those skilled in the art the invention discloses technical scope in, the change that can readily occur in or replacement, all answer
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)
1. a kind of 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, the second fan is obtained by the second rotating speed generation module
Rotary speed instruction, 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, is calculated rotation speed of the fan power as follows by inverter realtime power
Mapping value：
In formula, it is the first lower rotation speed limit that N1LimUp is the first rotating speed upper limit, N1LimDn, and PwrCal is inverter realtime power,
PwrRated is the rated power of inverter, and NFan1 is instructed 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, when the maximum temperature of cooled power device is more than or equal to the first temperature preset value, described
The instruction of first rotation speed of the fan is directly equal to the output of 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 set to zero；
The second rotary speed instruction generation module, after the maximum temperature of cooled power device is subtracted each other with second temperature preset value
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：
The lower limit set of the 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, under the first rotating speed
Limit is capable of the minimum speed of stable operation more than or equal to fan, and the first rotating speed upper limit allows the highest of operation to turn less than or equal to fan
Speed.
3. the control method for fan of inverter as claimed in claim 1, is further characterized in that：
The lower limit of the 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 and
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 outfan of power computation module is connected with the input of the first rotary speed instruction generation module, maximum temperature determination module
Outfan is connected with the input of the second rotary speed instruction generation module, the first rotary speed instruction generation module outfan and the second rotating speed
The outfan of directive generation module is all connected with summer, its output 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 is by subtractor, thermoregulator and the second rotating speed clipping module sequential series
Become.
7. fan governor as claimed in claim 6, is further characterized in that：
The thermoregulator is pi controller, integral controller or proportional controller.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610986869.7A CN106438433B (en) | 2016-11-09 | 2016-11-09 | The control method for fan and device of a kind of inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610986869.7A CN106438433B (en) | 2016-11-09 | 2016-11-09 | The control method for fan and device of a kind of inverter |
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| CN106438433A true CN106438433A (en) | 2017-02-22 |
| CN106438433B CN106438433B (en) | 2017-11-24 |
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| CN107577224A (en) * | 2017-09-27 | 2018-01-12 | 西安特锐德智能充电科技有限公司 | A kind of charger and its core controller, cooling control method |
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| CN108915840A (en) * | 2018-07-10 | 2018-11-30 | 中车大连机车车辆有限公司 | Temprature control method, the apparatus and system of cooling water |
| CN110012649A (en) * | 2019-05-08 | 2019-07-12 | 苏州浪潮智能科技有限公司 | A kind of power supply heat sinking control method and system |
| CN112954978A (en) * | 2021-02-25 | 2021-06-11 | 台州市菱士达电器有限公司 | Intelligent energy-saving frequency converter control system |
| CN114761902A (en) * | 2019-08-13 | 2022-07-15 | 华为数字能源技术有限公司 | Control method and control device for heat dissipation element |
| CN114893430A (en) * | 2022-05-06 | 2022-08-12 | 云尖信息技术有限公司 | Fan speed regulation method and device, server and storage medium |
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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 |
| CN108915840A (en) * | 2018-07-10 | 2018-11-30 | 中车大连机车车辆有限公司 | Temprature control method, the apparatus and system of cooling water |
| CN110012649A (en) * | 2019-05-08 | 2019-07-12 | 苏州浪潮智能科技有限公司 | A kind of power supply heat sinking control method and system |
| CN114761902A (en) * | 2019-08-13 | 2022-07-15 | 华为数字能源技术有限公司 | Control method and control device for heat dissipation element |
| CN114761902B (en) * | 2019-08-13 | 2023-09-12 | 华为数字能源技术有限公司 | Control method and control device for heat dissipation element |
| CN112954978A (en) * | 2021-02-25 | 2021-06-11 | 台州市菱士达电器有限公司 | Intelligent energy-saving frequency converter control system |
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