CN107102661B - Generator cooling system and its control method - Google Patents
Generator cooling system and its control method Download PDFInfo
- Publication number
- CN107102661B CN107102661B CN201710402526.6A CN201710402526A CN107102661B CN 107102661 B CN107102661 B CN 107102661B CN 201710402526 A CN201710402526 A CN 201710402526A CN 107102661 B CN107102661 B CN 107102661B
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- China
- Prior art keywords
- generator
- controller
- cooling water
- temperature
- flow
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Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Abstract
The invention discloses a kind of generator cooling system and its control methods.The control method of the wherein generator cooling system includes：The step of initial parameter is set (S01)；Real-time detecting step (S02)；Controller judgment step (S03)；Detection and real time data input controller step (S04) continue the real time temperature that will be detected input above controller；Controller calculates feedback parameter step (S05) and feedback control step (S06)；And cycle executes detection and real time data input controller step (S04) arrives feedback control step (S06) so that under conditions of optimal flux supplies, ensures that more gen-sets are in stable operating temperature.
Description
Technical field
This application involves electrical generator fields, and are specifically related to a kind of generator cooling system and its control method.
Background technology
Permanent magnet generator is a kind of common generator, the operation principle of permanent magnet generator be it is interior four strong magnets are housed,
Two panels cartridge rotor, two end caps on chip, the effect for filling strong magnet are mutually drained when permanent magnet generator operates, and permanent magnet generator is given
Increase energy, reaches optimum efficiency when permanent magnet generator runs to strong magnet excretion when 900-950 turns.It is transported along permanent magnet generator
Turn direction and mutually drain that permanent magnet generator is made the more to walk the more light.The electricity that permanent magnet generator is sent out at this time is more, stablizes.The shape of strong magnet
For circle, plane is cambered.Each pair strong magnet before and after one permanent magnet generator, diameter 220mm, thick 30mm, a pair is two panels,
It combines dress, and a piece of is concave arc shape, and a piece of is convex.There are excretion optimum distances when two panels strong magnet assembles.
This distance is that magnet voiding force is maximum, reaches 250 kilograms.
But if generator-temperature detection is excessively high, the performance cracking of generator magnetic part can be caused, the defeated of generator is influenced
Go out, even causes the equipment fault of generator.Therefore, it is necessary to be cooled down to generator by effective means, make its guarantor
It holds under stable operating temperature.Common generator cooling means has air-cooled and water cooling, and air-cooled cooling system structure is simple,
But cooling efficiency is relatively low.It is water cooling for the common cooling means of the high high-rating generator of capacity.The cooling efficiency master of water cooling
If being controlled by the flow-rate adjustment to cooling water.If cooling water flow supply is too small, generator overheating can be caused；Such as
The supply of fruit cooling water flow is excessive, can cause the waste of the energy.Accordingly, it is desirable to provide a kind of supply cooling water flow appropriate
Control method.
When more generators are run parallel, need to carry out water cooling to every generator, if every generator is individually matched
If a set of water-cooling system can increase the complexity of equipment, it is therefore desirable to provide a kind of generator simplifying more generators composition
The cooling system of group.
Invention content
The present invention provides a kind of control method of generator cooling system, and this method includes：
The step of initial parameter is set (S01) comprising the cooling water pump that generator cooling system is arranged initially exports ginseng
Number；
Real-time detecting step (S02), the step include detecting generator unit stator temperature in real time, and send it to a control
Device；
Controller judgment step (S03)：One preset temperature T is set in controllers, preset temperature TsIt is steady for generator
Determine the medium temperature in operating temperature section, preset temperature TsThe highest and lowest temperature in stable distance operating temperature section is
ΔT.After generating set booting, controller judges whether to detect that generator unit stator temperature is more than or equal to T for the first timesΔ T, such as
Fruit detects that generator unit stator temperature is more than or equal to T for the first timesΔ T, then controller open feedback control procedures；If without head
It is secondary to detect that generator unit stator temperature is more than or equal to TsΔ T then continues to keep real-time detecting step (S03) state；
Detection and real time data input controller step (S04) continue the real time temperature that will be detected and input above-mentioned control
Device；
Controller calculates feedback parameter step (S05), and wherein in step, in the case where sometime putting, above controller receives
The real time temperature of the generator arrived is Ti, and the flow value Q by the way that feedback regulation is calculated as followsi+1：
Δti=Ti-Ts,
ηi=Δ ti/ Δ T,
Qi+1=δ k (1+ ηi)Qi,
Wherein, k=2 ω1/2L/P, ω are generator speed (unit：Rev/min), L is cooling water pipeline length, and P is cold
But water hydraulic pressure (unit：Pa)；
δ is corrected parameter, it is contemplated that the seriousness for overheating the harm to generator, as Δ tiWhen more than zero, δ takes 1.1-
1.2；As Δ tiWhen less than zero, δ takes 0.2-0.4；And
Feedback control step (S06), according to calculated Qi+1The cooling water flow of cooling water water pump is set；
Cycle executes detection and real time data input controller step (S04) arrives feedback control step (S06).
When the output of cooling water pump 2 cannot meet the flow and pressure needed for whole system, can also open standby
With water pump 2.
The present invention provides a kind of generator cooling system of the above-mentioned control method of operation, which includes：Cooling water pump,
Water inlet end connects cooling water pipeline, and water outlet connects flow controller module；The flow controller module includes n flow control
Device；N flow controller is separately connected the cooling water inlet of n generator, and corresponding n are separately installed on n generator
Hygrosensor, to obtain the temperature of each generator unit stator in real time, which constitutes hygrosensor module；
Hygrosensor module sends the real time temperature of each generator unit stator to controller；After the controller is by calculating, feedback is adjusted
Save each flow controller so that under conditions of optimal flux supplies, ensure that more gen-sets are in stable work
Temperature.
Spare cooling water pump is also formulated in cooling system in the application.
It is formulated with detection module 7,7 ', the detection module respectively in the water outlet side of cooling water pump 2 and spare cooling water pump 2 '
7,7 ' are used for measuring the water flow and hydraulic pressure of cooling water outlet.
Description of the drawings
Fig. 1 is the application generator unit cooling system schematic diagram；
Fig. 2 is that temperature controls datagram in the embodiment of the present application；
Fig. 3 is the application generator unit cooling system control method flow diagram；
Specific implementation mode
To make those skilled in the art more fully understand the technical solution of the disclosure, below in conjunction with the accompanying drawings and specific embodiment party
Formula is described in further detail the disclosure.
Reference numeral：1, generator cooling system；2, cooling water pump；2 ', spare cooling water pump；3, flow controller mould
Block；4, generating set 5, hygrosensor module；6, controller；7, detection module.
Inventor has found that at least there are the following problems in parallel generating set cooling system.1, more generators are matched respectively
System covers cooling system, causes complexity and the waste of the energy of equipment；2, generator cooling-water flow control is inaccurate, is easy
Energy waste caused by apparatus overheat or flow are excessive caused by there is underfed.Based on above-mentioned technical problem, the application
First the following technical solutions are proposed.
One embodiment of the application provides a kind of generator cooling system.Fig. 1 is the generator cooling system of the present embodiment
Schematic diagram.As shown in Fig. 2, generator cooling system includes：Cooling water pump 2, water inlet end connect cooling water pipeline, and water outlet connects
Connect flow controller module 3；The flow controller module 3 include n flow controller 3-1,3-2 ..., 3-n；N flow
Controller be separately connected n generator 4-1,4-2 ..., the cooling water inlet of 4-n, n generator 4-1,4-2 ..., 4-n
On be separately installed with corresponding n hygrosensor 5-1,5-2 ..., 5-n, to obtain the temperature of each generator unit stator in real time
Degree, the n hygrosensor 5-1,5-2 ..., 5-n compositions hygrosensor module 5；Hygrosensor module 5 is by each power generation
The real time temperature of machine stator sends controller 6 to；After the controller 6 is by calculating, according to each generator unit stator temperature and mesh
Preceding cooling water flow, feedback regulation each flow controller 3-1,3-2 ..., 3-n so that optimal flux supply condition
Under, ensure that more gen-sets are in stable operating temperature.
In order to ensure the normal of system operation, cooling water system is avoided surprisingly to stop the destructive shadow caused by generating set
It rings, spare cooling water pump 2 ' is also formulated in the cooling system in the application.In going out for cooling water pump 2 and spare cooling water pump 2 '
Water side is formulated with detection module 7,7 ' respectively, which is used for measuring the water flow and hydraulic pressure of cooling water outlet.
When the hydraulic pressure that cooling pump 2 exports is less than hydraulic pressure early warning value, judges the fault of water pump, start spare cooling water pump 2 '.
For example, the hydraulic pressure early warning value could be provided as 70Pa.
In addition, when the output of cooling water pump 2 cannot meet the flow and pressure needed for whole system, can also open
Open reserve pump 2.
Generator in the present embodiment can be permanent magnet generator, and permanent magnet generator is a kind of common generator, permanent magnetism
The operation principle of generator be it is interior four strong magnets are housed, two panels cartridge rotor, two end caps on chip, the effect for filling strong magnet is forever
Magnetic generator is mutually drained when operating, and increases energy to permanent magnet generator, when permanent magnet generator runs to strong magnetic when 900-950 turns
Iron excretion reaches optimum efficiency.Mutually being drained along permanent magnet generator rotation direction makes permanent magnet generator the more walk the more light.Forever at this time
The electricity that magnetic generator is sent out is more, stablizes.The shape of strong magnet is circle, and plane is cambered.Each one before and after one permanent magnet generator
To strong magnet, diameter 220mm, thick 30mm, a pair is two panels, it combines dress, and a piece of is concave arc shape, and a piece of is convex arc
Shape.There are excretion optimum distances when two panels strong magnet assembles.This distance is that magnet voiding force is maximum, reaches 250 kilograms.
Generator in the present embodiment can also coordinate magneto to be used together, such as：Magneto main shaft links forever
Magnetic generator main shaft drives permanent magnet generator operates.Magneto rotating speed 900-950 turns；Permanent magnet generator rotating speed 900-950 turns；
Permanent-magnetism electromagnetic and permanent magnet generator are combined integrated machines；The input voltage 50Hz, 380V of magneto；Permanent magnet generator output electricity
Press 50Hz, 380V；Magneto is 12 pole motors；Permanent magnet generator is 8 poles；Four strong magnets, two panels are housed in magneto
Two end cap on chip of rotor, the effect for filling strong magnet are mutually drained when magneto operates, and increase energy to magneto, when
Magneto runs to strong magnet voiding force when 900-950 turns and reaches optimum efficiency, is mutually arranged along magneto rotation direction
It lets out, is that magneto is more and more lighter, magneto revolution electric current is 0 at this time.The shape of strong magnet is circle, and plane is cambered.
Each pair strong magnet before and after one magneto, diameter 150mm, thick 20mm, a pair is two panels, it combines dress, one
Piece is concave arc shape, and a piece of is convex.There are excretion optimum distances when two panels strong magnet assembles.This distance be magnet voiding force most
Big, reach 150 kilograms.The voiding force that permanent magnetic motor runs to strong magnet when 900-950 turns is sent out along permanent magnetism electrode rotation direction
Wave active force.Increase energy to magneto, keeps magneto stability good, the more walk the more light, electric current 0, noise is small.
The specific side that controller adjusts flow-control module 3 according to the real time data of hygrosensor module 5 is described below
Method.
Referring to attached drawing 2, first, a preset temperature T is set in controllers, preset temperature TsFor generator stable work
Make the medium temperature of temperature range, preset temperature TsThe highest and lowest temperature in stable distance operating temperature section is respectively Δ
T.Such as：Generator stable operating temperature section is 40-70 degrees Celsius, and preset temperature is 55 degrees Celsius, and Δ T is 15 degrees Celsius.
After generating set booting, hygrosensor detects that generator unit stator temperature is more than or equal to T for the first timesWhen Δ T, controller is opened
Open feedback control procedures.Specific feedback control procedures calculation is as follows：Under sometime putting, what hygrosensor 5-n was measured
The temperature of generator is Ti, and by the TiNumerical value sends back controller in real time.It is calculated, is obtained by following formula inside controller
The cooling water flow value Q of feedback regulationi+1：
Δti=Ti-Ts,
ηi=Δ ti/ Δ T,
Qi+1=δ k (1+ ηi)Qi,
Wherein, k=2 ω1/2L/P, ω are generator speed (unit：Rev/min), L is cooling water pipeline length, and P is cold
But water hydraulic pressure (unit：Pa)；
δ is corrected parameter, it is contemplated that the seriousness for overheating the harm to generator, as Δ tiWhen more than zero, δ takes 1.1-
1.2；As Δ tiWhen less than zero, δ takes 0.2-0.4.Those skilled in the art can rule of thumb or the experiment of limited number of time is above-mentioned
The range of selection corrected parameter δ in range.
Controller operation obtains Qi+1Afterwards, by the numeric feedback to corresponding flow controller, realization sets this generator
Standby flow feedback is adjusted.
It can be seen that, by above-mentioned control and regulation, effectively the operating temperature of generator is controlled in stabilization from attached drawing 2
In operating temperature section.
Fig. 3 is the application generator unit cooling system control method flow diagram.With reference to Fig. 3, illustrate the application
Method for controlling cooling system：
This method includes the steps that S01 setting initial parameters, and the initial parameter of generator cooling system is arranged in the step,
Such as：Flow, the hydraulic pressure of water pump output.
S02 examinations steps, the step include detecting generator unit stator temperature in real time by hygrosensor module 5,
And send it to controller 6.
S03 controller judgment steps：One preset temperature T is set in controller 6s, preset temperature TsFor generator stable
The medium temperature in operating temperature section, preset temperature TsThe highest and lowest temperature in stable distance operating temperature section is respectively
ΔT.After generating set booting, judge whether to detect that generator unit stator temperature is more than or equal to T for the first timesΔ T, if for the first time
Detect that generator unit stator temperature is more than or equal to TsΔ T, controller open feedback control procedures；If do not detected for the first time
Generator unit stator temperature is more than or equal to TsΔ T continues to keep real-time detecting state.
S04 is detected and real time data input controller step, hygrosensor module 5 continue the real time temperature that will be detected
Input controller 6.
S05 controllers calculate feedback parameter step, and specific feedback control procedures calculation is as follows：Under sometime putting,
The temperature for the generator that hygrosensor 5-n is measured is Ti, and by the TiNumerical value sends back controller in real time.It is logical inside controller
It crosses following formula to calculate, obtains the flow value Q of feedback regulationi+1：
Δti=Ti-Ts,
ηi=Δ ti/ Δ T,
Qi+1=δ k (1+ ηi)Qi,
Wherein, k=2 ω1/2L/P, ω are generator speed (unit：Rev/min), L is cooling water pipeline length, and P is cold
But water hydraulic pressure (unit：Pa)；
δ is corrected parameter, it is contemplated that the seriousness for overheating the harm to generator, as Δ tiWhen more than zero, δ takes 1.1-
1.2；As Δ tiWhen less than zero, δ takes 0.2-0.4.
S06 is by calculated Qi+1It is applied on each flow controller of flow controller module 3 to realize to cooling water
The real-time feedback control of flow.
Cycle carries out step S04 to step S05, by generator unit stator stability contorting within the scope of stationary value.
The generator cooling system and its control method of the disclosure, can realize the precise control of flew of more generators,
Equipment is simplified, while realizing stable generator operating temperature and energy saving.
It is understood that embodiment of above is merely to illustrate that the principle of the disclosure and the exemplary implementation that uses
Mode, the disclosure are not limited thereto.For the ordinary skill in the art, in the feelings for the essence for not departing from the disclosure
Under condition, various changes and modifications can be made therein, these variations and modifications are also considered as the protection domain of the disclosure.
Claims (5)
1. a kind of control method of generator cooling system, it is characterized in that：This method includes
The step of initial parameter is set（S01）Comprising the cooling water pump that above-mentioned generator cooling system is arranged initially exports
Parameter；
Real-time detecting step（S02）, which includes detecting generator unit stator temperature in real time, and send it to a controller；
Controller judgment step（S03）：One preset temperature T is set in the controllers, preset temperature TsFor generator stable
The medium temperature in operating temperature section, preset temperature TsThe highest and lowest temperature in stable distance operating temperature section is Δ
T；After generating set booting, controller judges whether to detect that generator unit stator temperature is more than or equal to T for the first timesΔ T, if
Detect that generator unit stator temperature is more than or equal to T for the first timesΔ T, then controller open feedback control procedures, if without for the first time
Detect that generator unit stator temperature is more than or equal to TsΔ T then continues to keep the real-time detecting step（S02）State；
Detection and real time data input controller step（S04）, continue the real time temperature that will be detected input above controller；
Controller calculates feedback parameter step（S05）, wherein in step, in the case where sometime putting, what above controller received
The real time temperature of generator is Ti, and the flow value Q by the way that feedback regulation is calculated as followsi+1：
Δti=Ti-Ts,
ηi=Δti/ Δ T,
Qi+1=δk（1+ηi）QI,
Wherein, the ω of k=21/2L/PD, ω are generator speed, unit：Revolutions per second；L is cooling water pipeline length, and P is cooling water water
Pressure, unit：Pa；D is cooling water pipeline diameter, unit：Rice；
δ is constant, it is contemplated that the seriousness for overheating the harm to generator, as Δ tiWhen more than zero, δ takes 1.1-1.2；As Δ ti
When less than zero, δ takes 0.2-0.4；And
Feedback control step（S06）, according to calculated Qi+1The cooling water flow of cooling water water pump is set；
Cycle executes detection and real time data input controller step（S04）To feedback control step（S06）；
To realize that cooling water flow of the generator in operation process accurately controls, while realizing stable generator work temperature
Degree and energy saving effect.
2. control method as described in claim 1, it is characterized in that：The output of the cooling water pump cannot meet whole system
When required flow, other spare cooling water pumps are opened.
3. a kind of generator cooling system of operation control method described in claim 1, it is characterized in that：The system includes cooling
Water pump, water inlet end connect cooling water pipeline, and water outlet connects flow controller module；The flow controller module includes n
Flow controller；N flow controller is separately connected the cooling water inlet of n generator, and phase is separately installed on n generator
The n hygrosensor answered, the n hygrosensor constitute hygrosensor module；Hygrosensor module is by each generator
The real time temperature of stator sends controller to；After the controller is by calculating, each flow controller of feedback regulation.
4. cooling system as claimed in claim 3, it is characterized in that：Spare cooling water pump is also formulated in the cooling system.
5. cooling system as claimed in claim 4, it is characterized in that：In going out for the cooling water pump and the spare cooling water pump
Water side is formulated with detection module, and the detection module is used for measuring water flow and hydraulic pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710402526.6A CN107102661B (en) | 2017-06-01 | 2017-06-01 | Generator cooling system and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710402526.6A CN107102661B (en) | 2017-06-01 | 2017-06-01 | Generator cooling system and its control method |
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| Publication Number | Publication Date |
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| CN107102661A CN107102661A (en) | 2017-08-29 |
| CN107102661B true CN107102661B (en) | 2018-08-21 |
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ID=59659231
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| CN201710402526.6A Expired - Fee Related CN107102661B (en) | 2017-06-01 | 2017-06-01 | Generator cooling system and its control method |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414079C (en) * | 2006-09-29 | 2008-08-27 | 中国船舶重工集团公司第七一一研究所 | Diesel engine side electric control modular cooling system |
| CN201328049Y (en) * | 2008-12-18 | 2009-10-14 | 吉林庆达数码有限公司 | Electric motor cooling device |
| US20110106351A1 (en) * | 2009-11-02 | 2011-05-05 | Gm Global Technology Operations, Inc. | Method for controlling motor/generator cooling in a multi-mode transmission |
| CN102714448B (en) * | 2010-01-14 | 2014-06-04 | 丰田自动车株式会社 | Apparatus for cooling stator |
| CN104076844B (en) * | 2013-03-27 | 2016-08-24 | 上海微电子装备有限公司 | A kind of control method of motor cooling control system |
| CN103364214B (en) * | 2013-07-18 | 2016-09-14 | 北京金风科创风电设备有限公司 | Motor cooling simulation test bed and motor cooling simulation method |
| CN103441614B (en) * | 2013-08-19 | 2016-12-28 | 宁波鲍斯能源装备股份有限公司 | A kind of cooling devcie of motor of refrigeration compressor |
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