CN104154022A - Speed adjusting method for fan in inverter - Google Patents
Speed adjusting method for fan in inverter Download PDFInfo
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- CN104154022A CN104154022A CN201410403089.6A CN201410403089A CN104154022A CN 104154022 A CN104154022 A CN 104154022A CN 201410403089 A CN201410403089 A CN 201410403089A CN 104154022 A CN104154022 A CN 104154022A
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- fan
- temperature
- inverter
- controller
- igbt
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Abstract
The invention discloses a speed adjusting method for a fan in an inverter and relates to the technical field of temperature adjusting devices or methods. The method includes the following steps that (1) a fan start temperature T is set in a controller of the fan; (2) a temperature control target value T Target of an IGBT of the inverter is set in the controller of the fan; (3) an actual temperature value T Test of the IGBT in the inverter is collected through a temperature sensor and sent into the controller, and when the actual temperature value T Test is higher than the fan start temperature T, a driving voltage value of the fan is calculated by the controller according to a formula P*(T Test-T Target)+I* (T Test-T Target)dt, shown in the specification, and the fan is controlled to rotate. According to the method, the service life of the fan can be prolonged, loss of the fan can be reduced as much as possible, and noise of the fan can be lowered as well.
Description
Technical field
The controlling device or the method and technology field that the present invention relates to temperature, relate in particular to the fan speed-governing method in a kind of inverter.
Background technique
In powerful photovoltaic energy storage inverter, be all generally to adopt the mode of fan refrigeration to come to inverter internal cooling, but fans drive need loss of energy, be also a short slab in restriction inverter life-span the working life of fan simultaneously.
Conventional fan speed-governing method mainly contains two kinds at present: one is segmentation speed regulation method, is divided into several sections by output power or output current size, when the power of output is in given scope, exports a corresponding voltage drive fan.Although this method can regulate fans drive voltage, under cryogenic conditions, inverter inside temperature is very low, to such an extent as to does not need fan air-cooled, has so just wasted the energy, has also reduced fan working life.If inverter is operated in high temperature low-power lower time, can not add again big fan refrigeration dynamics, cause inverter inside temperature very high, the working life that can reduce inverter conversion efficiency and inverter.
Another kind is that temperature regulates method, starts fan when IGBT temperature is greater than specified value, can stop fan when temperature is less than given temperature.Although this method can regulate according to the temperature of IGBT the unlatching of fan, but can not regulate wind intensity of force according to temperature value, can make inverter inside sometimes hot and sometimes cold, fan start and stop very frequently, will easily damage like this relay of fans drive, and the working life of reducing fan.
Summary of the invention
Technical problem to be solved by this invention is to provide the fan speed-governing method in a kind of inverter, described method can regulate according to the instantaneous value of IGBT temperature the rotating speed of fan, and the temperature of constant IGBT within the specific limits, guarantee that IGBT is operated in the optimum state, can not start at low temperatures again fan simultaneously, so just can extend the working life of fan, can reduce as much as possible again the loss of fan, can also reduce the noise of fan.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the fan speed-governing method in a kind of inverter, is characterized in that comprising the following steps:
(1) a starting fan temperature T is set in the controller of fan;
(2) an inverter IGBT control target temperature value is set in the controller of fan, is made as T
target;
(3) serviceability temperature sensor gathers the actual temperature value of IGBT in inverter, is made as T
test, and this value is sent in described controller, as actual temperature value T
testwhile being greater than starting fan temperature T, controller is according to formula P* (T
test-T
target)+I* ∫ (T
test-T
target) dt calculates the driving voltage value of fan, controls fan and rotates, and inverter is lowered the temperature, wherein P and I represent the fan speed-regulating factor, and P span is respectively 0.1-1, and the span of I is respectively 0.01-0.1
Further preferred technological scheme is: described starting fan temperature T is provided with return difference temperature +/-A DEG C, in the time that IGBT temperature reaches T+A DEG C, send fan enable signal by controller, once after starting fan, DEG C given as control target temperature value using the temperature T divided into, carry out the driving voltage value of regulating and controlling fan, if along with degradation factor impact under power, IGBT temperature declines, fan is with minimum speed work, until the temperature of IGBT is while having dropped to T-A DEG C, after time delay, send not enable signal of fan by controller, stop fan.
Further preferred technological scheme is: the output terminal of described controller is provided with fan control, for regulating the speed of response of fan.
The beneficial effect that adopts technique scheme to produce is: described method can regulate according to the instantaneous value of IGBT temperature the rotating speed of fan, and the temperature of constant IGBT within the specific limits, guarantee that IGBT is operated in the optimum state, can not start at low temperatures again fan simultaneously, so just can extend the working life of fan, the loss of fan can be reduced as much as possible again, the noise of fan can also be reduced.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is control flow chart of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment who obtains under creative work prerequisite, belong to the scope of protection of the invention.
A lot of details are set forth in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here and implement, those skilled in the art can do similar popularization without prejudice to intension of the present invention in the situation that, and therefore the present invention is not subject to the restriction of following public specific embodiment.
In the present embodiment, used the DC fan of an operating voltage at 17V-24V, thus the driving voltage amplitude limit of fan at 17V-24V, in practical application, also find, can trigger alarm lower than this voltage, likely can burn out fan higher than this voltage.And this fan is with a faut detection line, also can trigger fan alarm if governing speed is too fast, so the P factor is set to 0.2 in practical application, FI is set to 0.05 (value of P and I need to be set according to actual conditions), the scope of return difference temperature is set to 2 DEG C of +/-, by temperature objectives controlling value T
targetbe set to 45 DEG C, in the application of common laboratory (22 DEG C of left and right of ambient temperature).
Start power limiting 8% is while working, and fan is not opened, and increasing power progressively, in the time that power reaches 9%, IGBT temperature rise is to 47 DEG C, and at this moment fan is opened, the data that can show by temperature test after unlatching find that temperature constant is at 45 DEG C, and driving voltage is 17.3V.While again power being increased to 30%, driving voltage has risen to 19.9V.And temperature or constant in 45 DEG C.Again by increased power to 56% time, driving voltage has been raised to 24V, temperature rise to 45.2 DEG C, then along with the increase of power, IGBT temperature also rises gradually, final full load, temperature stabilization is at 76 DEG C.
After temperature stabilization, start to reduce output power, driving voltage can start to decline, and IGBT temperature declines, and until power drops to 8%, temperature starts to drop to lower than 43 DEG C, then time delay 10s, and fan quits work.
Can find out by above application result, this controlling method can possess good self-adjusting ability, the temperature of adjusting IGBT that not only can be very fast, all right auto sleep and arousal function, can extend greatly the working life of fan, also the energy of very large saving.
Claims (3)
1. the fan speed-governing method in inverter, is characterized in that comprising the following steps:
(1) a starting fan temperature T is set in the controller of fan;
(2) an inverter IGBT control target temperature value is set in the controller of fan, is made as T
target;
(3) serviceability temperature sensor gathers the actual temperature value of IGBT in inverter, is made as T
test, and this value is sent in described PI controller, as actual temperature value T
testwhile being greater than starting fan temperature T, controller is according to formula P* (T
test-T
target)+I* ∫ (T
test-T
target) dt calculates the driving voltage value of fan, controls fan and rotates, and inverter is lowered the temperature, wherein P and I represent the fan speed-regulating factor, and P span is respectively 0.1-1, and the span of I is respectively 0.01-0.1.
2. the fan speed-governing method in inverter according to claim 1, it is characterized in that: described starting fan temperature T is provided with return difference temperature +/-A DEG C, in the time that IGBT temperature reaches T+A DEG C, send fan enable signal by controller, once after starting fan, DEG C given as control target temperature value using the temperature T divided into, carry out the driving voltage value of regulating and controlling fan, if along with degradation factor impact under power, IGBT temperature declines, fan is with minimum speed work, until the temperature of IGBT is while having dropped to T-A DEG C, after time delay, send not enable signal of fan by controller, stop fan.
3. the fan speed-governing method in inverter according to claim 1 and 2, is characterized in that: the output terminal of described controller is provided with fan control, for regulating the speed of response of fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410403089.6A CN104154022B (en) | 2014-08-15 | 2014-08-15 | Fan speed-governing method in inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410403089.6A CN104154022B (en) | 2014-08-15 | 2014-08-15 | Fan speed-governing method in inverter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104154022A true CN104154022A (en) | 2014-11-19 |
| CN104154022B CN104154022B (en) | 2016-09-07 |
Family
ID=51879613
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410403089.6A Active CN104154022B (en) | 2014-08-15 | 2014-08-15 | Fan speed-governing method in inverter |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105491852A (en) * | 2015-12-01 | 2016-04-13 | 中船重工鹏力（南京）新能源科技有限公司 | Radiating method for active power filter |
| CN106438433A (en) * | 2016-11-09 | 2017-02-22 | 南京南瑞继保电气有限公司 | Inverter fan control method and 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 |
| CN109253099A (en) * | 2017-07-13 | 2019-01-22 | 中兴通讯股份有限公司 | A kind of base station control method for fan and device |
| CN110579075A (en) * | 2018-06-11 | 2019-12-17 | 惠而浦（中国）股份有限公司 | Method and system for controlling variable frequency load rotating speed of refrigerator |
| CN110602922A (en) * | 2019-08-30 | 2019-12-20 | 宁波三星智能电气有限公司 | Charging pile internal temperature control method based on PWM fan control |
| 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 |
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| US20010022507A1 (en) * | 2000-01-20 | 2001-09-20 | Harry Marinus | Speed control |
| US20020118342A1 (en) * | 2001-02-27 | 2002-08-29 | Kenji Ohfune | Liquid crystal projector |
| US20040050084A1 (en) * | 2002-09-18 | 2004-03-18 | Shigenobu Fukumi | Vehicle air conditioner with variable displacement compressor |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105491852A (en) * | 2015-12-01 | 2016-04-13 | 中船重工鹏力（南京）新能源科技有限公司 | Radiating method for active power filter |
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| CN106438433A (en) * | 2016-11-09 | 2017-02-22 | 南京南瑞继保电气有限公司 | Inverter fan control method and device |
| CN106438433B (en) * | 2016-11-09 | 2017-11-24 | 南京南瑞继保电气有限公司 | The control method for fan and device of a kind of inverter |
| CN109253099B (en) * | 2017-07-13 | 2021-08-03 | 中兴通讯股份有限公司 | Base station fan control method and device |
| CN109253099A (en) * | 2017-07-13 | 2019-01-22 | 中兴通讯股份有限公司 | A kind of base station control method for fan and device |
| 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 |
| 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 |
| CN110579075A (en) * | 2018-06-11 | 2019-12-17 | 惠而浦（中国）股份有限公司 | Method and system for controlling variable frequency load rotating speed of refrigerator |
| CN110579075B (en) * | 2018-06-11 | 2021-10-01 | 惠而浦（中国）股份有限公司 | Method and system for controlling variable frequency load rotating speed of refrigerator |
| 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 |
| CN110602922A (en) * | 2019-08-30 | 2019-12-20 | 宁波三星智能电气有限公司 | Charging pile internal temperature control method based on PWM fan control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104154022B (en) | 2016-09-07 |
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