CN104197467A - Fan coil working condition detecting and self-adaptation control method and equipment - Google Patents
Fan coil working condition detecting and self-adaptation control method and equipment Download PDFInfo
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- CN104197467A CN104197467A CN201410397858.6A CN201410397858A CN104197467A CN 104197467 A CN104197467 A CN 104197467A CN 201410397858 A CN201410397858 A CN 201410397858A CN 104197467 A CN104197467 A CN 104197467A
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Abstract
The invention discloses a fan coil working condition detecting and self-adaptation control method. A current Q-axis current value of a motor of a fan coil is detected, a detecting result is compared with a Q-axis rated current value, whether the fan coil is in a wet working condition is judged, the judging mode is accurate, quick and convenient to carry out, extra cost is of no need, and the fact that the fan coil is in the wet working condition can be found at first time. If the fact that the fan coil is in the wet working condition is determined, the target rotating speed of the motor is increased until the practical Q-axis current value of the motor is matched with the rated current value, accordingly, the motor load under the wet working condition is improved to a standard state, meanwhile, the air amount of the fan coil is improved to a standard state, the fact that the fan coil can meet the requirement of specified cooling capacity is guaranteed, and the problem that under the wet working condition, fan coil air amount is reduced, and cooling capacity is reduced is effectively solved.
Description
Technical field
The present invention relates to fan coil control field, relate in particular to the detecting of fan coil operating mode and adaptive control technology.
Background technology
The motor that is matched with fan coil units is always alternating current generator (claiming afterwards AC motor), and its application is very ripe, but efficiency is lower.In recent years, in the world and domestic Ji Jia great factory occurred brshless DC motor (claiming afterwards DC motor) to be configured on the small-sized fan in air-conditioning system, it is also one of them that the blower fan of fan coil matches.The great advantage of DC motor is energy saving, and rotating speed set after control thinking based on speed closed loop, no matter be at wet cooling condition or dry cooling condition, its rotating speed is substantially constant or change very little.And the rotating speed of AC motor unit in the time of wet cooling condition large 15% left and right during conventionally compared with dry cooling condition.But, the present inventor finds, when having configured after DC motor, the air quantity of air quantity while making DC motor dry cooling condition during with configuration AC motor is identical, then do cooling working condition tests, find not reach and should have value for cold, under wet cooling condition, the air quantity of DC motor unit is significantly less than the air quantity of AC motor unit.According to national regulation, the nominal air delivery of fan coil is demarcated under dry cooling condition.Under wet cooling condition, because fin surface is depending on air condensate water, the circulating resistance of air is increased, reduce unit air quantity.Owing to having close relationship between air quantity and cold, air quantity reduces again, and cold also can reduce thereupon.Even if thereby under dry cooling condition, the cold that supplies of fan coil reaches state specified standards value, and under wet cooling condition, the fan coil of configuration DC motor still cannot meet the cold that supplies of regulation.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of fan coil operating mode detecting and self-adaptation control method, can find in time that fan coil enters wet cooling condition, and effectively solve under wet cooling condition, the problem that fan coil air quantity reduces, reduces for cold.
In order to solve the problems of the technologies described above, the invention provides a kind of fan coil operating mode detecting and self-adaptation control method, comprise following steps:
Preserve the motor of fan coil under rotating speed of target, corresponding Q axle load current value;
The current Q shaft current value of motor that detects fan coil, if the Q shaft current value detecting is less than Q axle load current value, increases the rotating speed of target of motor, until Q shaft current value and the load current value of motor reality match.
As further improvement, the rotating speed of target of described increase motor, until in the Q shaft current value of motor reality and step that load current value matches, can comprise following sub-step:
The rotating speed of target of motor is improved to default increment;
Whether Q shaft current value and load current value that front motor is worked as in detection match, if when the Q shaft current value of front motor is less than load current value, continue the rotating speed of target of motor to improve default increment, match until work as Q shaft current value and the load current value of front motor.
As further improvement, in this fan coil operating mode detecting and self-adaptation control method, the motor of described fan coil is carried out respectively to speed ring and electric current loop closed-loop control.
As further improvement, in the step of the current Q shaft current value of the motor of described detection fan coil, described Q shaft current value is in default very first time section, the mean value of Q shaft current value.
As further improvement, be less than Q axle load current value in the Q shaft current value detecting, and both differences are while reaching specified difference amount, determine that the Q shaft current value detecting is less than Q axle load current value.
As further improvement, the motor of described fan coil comprises the rotating speed of target of at least two class;
The motor of described preservation fan coil, under rotating speed of target, in the step of corresponding Q axle load current value, is preserved the motor of fan coil under different target rotating speed, each self-corresponding Q axle load current value;
If the Q shaft current value detecting described is less than in the step of Q axle load current value, and described Q shaft current value is less than Q axle load current value corresponding under current goal rotating speed.
The present invention also provides a kind of fan coil operating mode detecting and self-adaptive controlled control equipment, comprises:
Memory cell, for the motor of preserving fan coil under rotating speed of target, corresponding Q axle load current value;
Detecting unit, for detection of the current Q shaft current value of the motor of fan coil;
Judging unit, for judging whether the Q shaft current value detecting is less than Q axle load current value;
Regulation and control unit, in the time that judging unit judges that the Q shaft current value detecting is less than Q axle load current value, increases the rotating speed of target of motor, until Q shaft current value and the load current value of motor reality match.
As further improvement, described regulation and control unit comprises following subelement:
Speed-raising unit, for improving the rotating speed of target of motor default increment; Described default increment can be 6 to turn.
Described detecting unit also for, improve after the rotating speed of target of motor in speed-raising unit, detect the current Q shaft current value of motor;
Described judging unit also for, judge whether motor Q shaft current value and load current value that the up-to-date detection of detecting unit obtains match, if the motor Q shaft current value detecting up-to-date is less than load current value, instruction speed-raising unit improves the rotating speed of target of motor default increment again, matches until work as Q shaft current value and the load current value of front motor.
As further improvement, this equipment can also comprise: Closed Loop Control Unit, and for the motor of described fan coil is carried out respectively to speed ring and electric current loop closed-loop control.
As further improvement, the current Q shaft current value of motor of the fan coil that described detecting unit detects is: in default very first time section, and the mean value of Q shaft current value.Described default very first time section can be in 60 seconds.
As further improvement, described judging unit is less than Q axle load current value in described Q shaft current value, and both differences are while reaching specified difference amount, judge that the Q shaft current value detecting is less than Q axle load current value.
As further improvement, the motor of described fan coil comprises the rotating speed of target of at least two class;
Described memory cell also for the motor of preserving fan coil under different target rotating speed, each self-corresponding Q axle load current value;
Described judging unit is also for judging whether the Q shaft current value that detecting unit detects is less than Q axle load current value corresponding under current goal rotating speed.
Embodiment of the present invention compared with prior art, the main distinction and effect thereof are: by detecting the current Q shaft current value of motor of fan coil, and testing result is compared with Q axle load current value, judge the current wet cooling condition that whether enters of fan coil, this judgment mode accurate, quick, convenient and without increase extra cost, can find that fan coil enters wet cooling condition the very first time.If judge that fan coil enters wet cooling condition, increase the rotating speed of target of motor, until Q shaft current value and the load current value of motor reality match, thereby the load of motor under wet cooling condition is risen to standard state, the air quantity of fan coil has been risen to standard state simultaneously, guarantee that fan coil can meet the cold that supplies of regulation, efficiently solves under wet cooling condition the problem that fan coil air quantity reduces, reduces for cold.
Brief description of the drawings
Fig. 1 is the detecting of fan coil operating mode and the self-adaptation control method flow chart of first embodiment of the invention;
Fig. 2 is the detecting of fan coil operating mode and the Self Adaptive Control equipment structure chart of second embodiment of the invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiments of the present invention are described in further detail.
First embodiment of the invention relates to a kind of fan coil operating mode detecting and self-adaptation control method, efficiently solves fan coil air quantity under wet cooling condition and reduces, and cold reduces thereupon, cannot reach the problem of the rated value of national regulation.
In present embodiment, for the motor of fan coil, realize respectively the closed-loop control of speed ring and electric current loop.
The implementation method of general speed (rotating speed) ring closed-loop control is: CPU receives the instruction of motor given rotating speed, and (motor can comprise the rotating speed of target of multiple class, determine current rotating speed of target by given rotary speed instruction), Real-Time Monitoring motor feedback rate signal, if feedback speed is less than given rotating speed instruction (being given rotating speed of target), increase motor Q shaft current iq and (increase motor Q shaft current, motor speed increases, and approaches given rotating speed instruction); Otherwise, if feedback speed is greater than given rotating speed instruction, reduce motor Q shaft current (reduce motor Q shaft current, motor speed reduces, and approaches given rotating speed); Until motor actual speed and given rotating speed instruction match.The advantage of speed closed loop control that Here it is, even if the fluctuation of load, also can real-time response and meet the demands.
The implementation method of the closed-loop control of electric current loop is: CUP receives the instruction that Q shaft current increases or reduces, and increases or reduces according to the variable quantity control Q shaft current in instruction, as received, Q shaft current increases the instruction of 1 ampere, and controlling Q shaft current increases by 1 ampere; Afterwards Q axle actual current is detected, if the actual current value detecting is less than the current value that instruction specifies, mend a current increment, continue to detect actual electrical flow, until the current value that and instruction specifies matches; If the actual current value detecting is greater than the current value that instruction specifies, subtract a current increment, continue to detect actual electrical flow, until the current value that and instruction specifies matches.
Based on the closed-loop control of above-mentioned speed ring and electric current loop, present embodiment fan coil operating mode detecting and self-adaptation control method are as follows: under first definite dry cooling condition, motor is reaching under different rotating speed of target, and the Q shaft current value that it is actual, is called load current value.Preserve the corresponding relation of different target rotating speed and its Q axle load current value.
After system powers on, while specifically control, as shown in Figure 1, enter step 101, per secondly read motor Q shaft current once, and preserve this data.
In step 102, after timing to 60 second, enter step 103.
In step 103, calculate Q shaft current mean value in 60 seconds.
In step 104, judge whether the mean value of Q shaft current in 60 seconds is less than load current value corresponding under current goal rotating speed.If the mean value of Q shaft current is less than load current value in 60 seconds, confirm when advancing into wet cooling condition, enter step 105; Otherwise, show the current wet cooling condition that do not enter, process ends.
Specifically, in the time that fan coil enters wet cooling condition, because fin surface is depending on air condensate water, thereby cause air outlet relatively to diminish, in the situation that motor rotating speed of target is constant, air quantity can decline, and the air quantity load that declines diminishes, and then Q shaft current diminishes.Therefore, the present inventor finds, by detecting Q shaft current, can determine the current wet cooling condition that whether enters.
In this step, can be less than corresponding Q axle load current value at Q shaft current mean value, and both differences are while reaching specified difference amount, judge that Q shaft current mean value is less than Q axle load current value.
In step 105, system enters wet cooling condition, enters compensated stage, motor speed is promoted to 6 and turn (every 60s carries out once).
In step 106, wait for 60 seconds, enter step 107.
In step 107, judge whether the air quantity after compensation meets unit requirement, judge whether the motor Q shaft current after compensation meets load current value.If meet process ends; If do not met, return to step 105, continue that rotating speed is promoted to 6 and turn.Until air quantity finally meets the requirement of unit.By present embodiment, can guarantee that fan coil is under wet cooling condition state, air quantity does not fall in energy-conservation.
By detecting the current Q shaft current value of motor of fan coil, and testing result is compared with Q axle load current value, judge the current wet cooling condition that whether enters of fan coil, this judgment mode accurate, quick, convenient and without increase extra cost, can find that fan coil enters wet cooling condition the very first time.If judge that fan coil enters wet cooling condition, increase the rotating speed of target of motor, until Q shaft current value and the load current value of motor reality match, thereby the load of motor under wet cooling condition is risen to standard state, the air quantity of fan coil has been risen to standard state simultaneously, guarantee that fan coil can meet the cold that supplies of regulation, efficiently solves under wet cooling condition the problem that fan coil air quantity reduces, reduces for cold.
Can be every Preset Time section, whether cycle criterion fan coil enters wet cooling condition, as every 15 minutes to half an hour, carry out the flow process of a step 101-107, current residing operating mode is detected.Once to ensure that fan coil enters wet cooling condition, air quantity reduces, and can find immediately and carry out Self Adaptive Control.
Second embodiment of the invention relates to a kind of fan coil operating mode detecting and self-adaptive controlled control equipment, as shown in Figure 2, comprises:
Memory cell, for the motor of preserving fan coil under rotating speed of target, corresponding Q axle load current value.Detecting unit, for detection of the current Q shaft current value of the motor of fan coil.Judging unit, for judging whether the Q shaft current value detecting is less than Q axle load current value.Regulation and control unit, in the time that judging unit judges that the Q shaft current value detecting is less than Q axle load current value, increases the rotating speed of target of motor, until Q shaft current value and the load current value of motor reality match.
By detecting the current Q shaft current value of motor of fan coil, and testing result is compared with Q axle load current value, judge the current wet cooling condition that whether enters of fan coil, this judgment mode accurate, quick, convenient and without increase extra cost, can find that fan coil enters wet cooling condition the very first time.If judge that fan coil enters wet cooling condition, increase the rotating speed of target of motor, until Q shaft current value and the load current value of motor reality match, thereby the load of motor under wet cooling condition is risen to standard state, the air quantity of fan coil has been risen to standard state simultaneously, guarantee that fan coil can meet the cold that supplies of regulation, efficiently solves under wet cooling condition the problem that fan coil air quantity reduces, reduces for cold.Closed Loop Control Unit, for carrying out speed ring and electric current loop closed-loop control to the motor of fan coil.
Above-mentioned regulation and control unit can further comprise following subelement: speed-raising unit, and for the rotating speed of target of motor being improved to default increment.Above-mentioned detecting unit can also be used for, and improves after the rotating speed of target of motor in speed-raising unit, detects the current Q shaft current value of motor.Above-mentioned judging unit can also be used for, judge whether motor Q shaft current value and load current value that the up-to-date detection of detecting unit obtains match, if the motor Q shaft current value detecting up-to-date is less than load current value, instruction speed-raising unit improves the rotating speed of target of motor default increment again, matches until work as Q shaft current value and the load current value of front motor.
As further improvement, in order to improve the accuracy that detects data, the current Q shaft current value of the motor of the fan coil that detecting unit detects can be in default very first time section, the mean value of Q shaft current.
As further improvement, judging unit can be less than Q axle load current value in Q shaft current value, and both differences are while reaching specified difference amount, judge that the Q shaft current value detecting is less than Q axle load current value.
As further improvement, the motor of the fan coil of present embodiment can comprise the rotating speed of target of multiple class.Memory cell is also preserved the motor of fan coil under different target rotating speed, each self-corresponding Q axle load current value.Judging unit judges when whether the Q shaft current value detecting is less than Q axle load current value, judges whether this Q shaft current value is less than Q axle load current value corresponding under current goal rotating speed.
Although pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and described, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (12)
1. the detecting of fan coil operating mode and a self-adaptation control method, is characterized in that, comprises following steps:
Preserve the motor of fan coil under rotating speed of target, corresponding Q axle load current value;
The current Q shaft current value of motor that detects fan coil, if the Q shaft current value detecting is less than Q axle load current value, increases the rotating speed of target of motor, until Q shaft current value and the load current value of motor reality match.
2. fan coil operating mode according to claim 1 detecting and self-adaptation control method, is characterized in that, increases the rotating speed of target of motor, until in the Q shaft current value of motor reality and step that load current value matches, comprise following sub-step:
The rotating speed of target of motor is improved to default increment;
Whether Q shaft current value and load current value that front motor is worked as in detection match, if when the Q shaft current value of front motor is less than load current value, continue the rotating speed of target of motor to improve default increment, match until work as Q shaft current value and the load current value of front motor.
3. fan coil operating mode detecting according to claim 1 and 2 and self-adaptation control method, is characterized in that, also comprises following steps:
The motor of described fan coil is carried out to speed ring and electric current loop closed-loop control.
4. fan coil operating mode detecting according to claim 1 and 2 and self-adaptation control method, it is characterized in that, in the step of the current Q shaft current value of the motor of described detection fan coil, the Q shaft current value detecting is in default very first time section, the mean value of Q shaft current.
5. fan coil operating mode detecting according to claim 1 and 2 and self-adaptation control method, it is characterized in that, be less than Q axle load current value in the Q shaft current value detecting, and both differences are while reaching specified difference amount, determine that the Q shaft current value detecting is less than Q axle load current value.
6. fan coil operating mode detecting according to claim 1 and 2 and self-adaptation control method, is characterized in that, the motor of described fan coil comprises the rotating speed of target of at least two class;
The motor of described preservation fan coil, under rotating speed of target, in the step of corresponding Q axle load current value, is preserved the motor of fan coil under different target rotating speed, each self-corresponding Q axle load current value;
If the Q shaft current value detecting described is less than in the step of Q axle load current value, and described Q shaft current value is less than Q axle load current value corresponding under current goal rotating speed.
7. the detecting of fan coil operating mode and a self-adaptive controlled control equipment, is characterized in that, comprises:
Memory cell, for the motor of preserving fan coil under rotating speed of target, corresponding Q axle load current value;
Detecting unit, for detection of the current Q shaft current value of the motor of fan coil;
Judging unit, for judging whether the Q shaft current value detecting is less than Q axle load current value;
Regulation and control unit, in the time that judging unit judges that the Q shaft current value detecting is less than Q axle load current value, increases the rotating speed of target of motor, until Q shaft current value and the load current value of motor reality match.
8. fan coil operating mode detecting according to claim 7 and self-adaptive controlled control equipment, is characterized in that, described regulation and control unit comprises following subelement:
Speed-raising unit, for improving the rotating speed of target of motor default increment;
Described detecting unit also for, improve after the rotating speed of target of motor in speed-raising unit, detect the current Q shaft current value of motor;
Described judging unit also for, judge whether motor Q shaft current value and load current value that the up-to-date detection of detecting unit obtains match, if the motor Q shaft current value detecting up-to-date is less than load current value, instruction speed-raising unit improves the rotating speed of target of motor default increment again, matches until work as Q shaft current value and the load current value of front motor.
9. according to the detecting of fan coil operating mode and self-adaptive controlled control equipment described in claim 7 or 8, it is characterized in that, also comprise:
Closed Loop Control Unit, for carrying out speed ring and electric current loop closed-loop control to the motor of described fan coil.
10. according to the detecting of fan coil operating mode and self-adaptive controlled control equipment described in claim 7 or 8, it is characterized in that, the current Q shaft current value of motor of the fan coil that described detecting unit detects is in default very first time section, the mean value of Q shaft current.
11. according to the detecting of fan coil operating mode and self-adaptive controlled control equipment described in claim 7 or 8, it is characterized in that, described judging unit is less than Q axle load current value in described Q shaft current value, and when both differences reach specified difference amount, judge that the Q shaft current value detecting is less than Q axle load current value.
12. according to the detecting of fan coil operating mode and self-adaptive controlled control equipment described in claim 7 or 8, it is characterized in that, the motor of described fan coil comprises the rotating speed of target of at least two class;
Described memory cell also for the motor of preserving fan coil under different target rotating speed, each self-corresponding Q axle load current value;
Described judging unit is also for judging whether the Q shaft current value that detecting unit detects is less than Q axle load current value corresponding under current goal rotating speed.
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| CN201410397858.6A CN104197467B (en) | 2014-08-13 | 2014-08-13 | A kind of fan coil operating mode detecting and self-adaptation control method and equipment |
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| CN201410397858.6A CN104197467B (en) | 2014-08-13 | 2014-08-13 | A kind of fan coil operating mode detecting and self-adaptation control method and equipment |
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| CN104197467B CN104197467B (en) | 2017-06-20 |
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| CN107289575A (en) * | 2016-04-01 | 2017-10-24 | 珠海格力电器股份有限公司 | Condensation prevention control method and system |
| CN110207289A (en) * | 2018-02-28 | 2019-09-06 | 江森自控科技公司 | House heating and cooling system |
| CN112460814A (en) * | 2020-11-10 | 2021-03-09 | 华帝股份有限公司 | Control method for wind speed self-adaption of direct-current variable-frequency gas water heater |
| CN114294801A (en) * | 2022-01-11 | 2022-04-08 | 浙江亿利达风机股份有限公司 | Dry-wet state intelligent control method for coil pipe fan |
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| CN104197467B (en) | 2017-06-20 |
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