CN104953491B - Chain type SVG cooling system control apparatus and method - Google Patents
Chain type SVG cooling system control apparatus and method Download PDFInfo
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Abstract
The present invention discloses a kind of chain type SVG cooling system control apparatus and method.The device includes：Temperature detecting module, on chain type SVG link units edge grid bipolar transistor IGBT kernel, for detecting the temperature of IGBT kernels in real time and generating temperature signal；Temperature signal modular converter, the temperature signal for being generated according to temperature detecting module determines the temperature of IGBT kernels；Control module, the air quantity for controlling cooling fan according to the Current Temperatures of the IGBT kernels.The disclosure provides device and method, can be with nuclear temperature in real-time tracking IGBT, it is ensured that chain type SVG link units are operated in optimum temperature state, improves operating efficiency highest；The number of starts of blower fan can be effectively reduced, increase uses birthday noodle, improves blower fan work efficiency, reduce energy loss, and rotation speed of fan can be controlled, reduce the noise that fan operation is brought.
Description
Technical field
The present invention relates to the cooling system control apparatus and method of field of power, more particularly to a kind of chain type SVG.
Background technology
Current chain type SVG (Static Var Generator) cooling system is mostly the air-cooled circulatory system, only
The device of only a few Large Copacity just uses water-cooling circulating system.But most air-cooled circulatory system control method is simpler
It is single, all it is direct control blower fan start and stop, then link units are cooled through air channel.Power of fan selection be mostly by chain link most
Big power consumption and design.
The mode of control temperature is broadly divided into two kinds in the prior art：The first is to automatically control, device detection chain link list
When first temperature exceedes setting value, start blower fan, when link units temperature is less than setting value, blower fan stops, and second is manual
Control.Now start blower fan always, without corresponding detection process.But, the frequent starting of blower fan can be caused when automatically controlling；
The waste of energy can be caused during control manually, and very big noise can be brought during fan operation.
Therefore, it is necessary to propose a kind of cascade STATCOM SVG cooling system control apparatus and method to solve
Certainly above-mentioned technical problem.
The content of the invention
The disclosure technical problem to be solved is how to provide a kind of cascade STATCOM SVG cooling system
Control device and the method for uniting being capable of nuclear temperature in real-time tracking IGBT, it is ensured that chain type SVG link units are operated in optimum temperature
State, improves operating efficiency highest；And the number of starts of blower fan can be effectively reduced, increase uses birthday noodle, improves fanman
Make efficiency, reduce energy loss, and rotation speed of fan can be controlled, reduce the noise that fan operation is brought
The disclosure provides a kind of cascade STATCOM SVG cooling system control apparatus, including：Temperature detection mould
Block, on chain type SVG link units edge grid bipolar transistor IGBT kernel, the temperature for detecting IGBT kernels in real time
Spend and generate temperature signal；Temperature signal modular converter, the temperature signal for being generated according to temperature detecting module determines IGBT
The temperature of kernel；Control module, the air quantity for controlling cooling fan according to the Current Temperatures of the IGBT kernels.
Further, the temperature detecting module includes IGBT kernel thermistors, and temperature signal modular converter includes：Electricity
Voltage conversion unit is hindered, the temperature signal for being generated according to the IGBT kernels thermistor obtains voltage signal；A/D samples
Unit, the voltage signal for the resistive voltage converting unit to be obtained is converted to data signal；Chain link control unit, is used for
The resistance temperature table of comparisons that the data signal is contrasted into memory storage determines link units IGBT operating temperature, and by institute
State operating tempera-ture signal and be sent to control module.
Further, the voltage and the corresponding relation of IGBT kernel thermistors that resistive voltage converting unit is determined are Vt=
2.5*R3/R2, wherein VtRepresent magnitude of voltage, R3Represent thermistor resistance；The IGBT kernels temperature-sensitive electricity that chain link control unit is determined
The corresponding relation of resistance and nuclear temperature in IGBT is R3=K*T1, wherein K is nonlinear coefficient, T1Represent nuclear temperature in IGBT.
Further, control module includes：Comparing calculation unit, for receiving operating temperature, contrasts link units
The most suitable operating temperature of IGBT kernels, calculates the discharge quantity of fan of blower fan；Speed calculation unit, according to the comparing calculation unit meter
The discharge quantity of fan calculated, controls frequency converter, changes rotation speed of fan, reaches to the temperature controlled purpose of link units IGBT kernels.
Further, the most suitable operating temperature range of IGBT kernels is set as 25 DEG C -75 DEG C.
Further, the most suitable operating temperature of IGBT kernels is 25 DEG C.
Further, control module is additionally operable to：When the temperature rise of IGBT kernels, the power of rise frequency converter output,
Motor speed becomes big, and wind speed becomes big；When nuclear temperature is higher than the first setting value in IGBT, motor output maximum (top) speed, wind speed dimension
Hold in maximum；When the temperature reduction of IGBT kernels, the power of reduction frequency converter output, machine rotating speed diminishes, wind speed step-down；When
When nuclear temperature is less than the second setting value in IGBT, wind speed keeps normal rotating speed or shut down.
Further, temperature signal modular converter receives the temperature that temperature detecting module is detected by optical fiber.
Further, IGBT kernels include IGBT elements, backward dioded.
The disclosure also provides a kind of cascade STATCOM SVG method for controlling cooling system, including：By installing
Temperature detecting module on chain type SVG link units edge grid bipolar transistor IGBT kernel detects IGBT kernels in real time
Temperature simultaneously generates temperature signal；The temperature signal generated according to temperature detecting module determines the temperature of IGBT kernels；According to described
The Current Temperatures of IGBT kernels control the air quantity of cooling fan.
Further, the temperature detecting module includes IGBT kernel thermistors, is generated according to temperature detecting module
Temperature signal determines that the temperature of IGBT kernels includes：The temperature signal generated according to the IGBT kernels thermistor obtains voltage
Signal；Voltage signal will be obtained according to the IGBT kernels thermistor and be converted to data signal；The data signal is contrasted
The resistance temperature table of comparisons of memory storage determines link units IGBT operating temperature.
Further, the corresponding relation of IGBT kernels thermistor and voltage is Vt=2.5*R3/R2, wherein VtRepresent electricity
Pressure value, R3Represent thermistor resistance.Pair of nuclear temperature in the IGBT kernels thermistor and IGBT that chain link control unit is determined
It should be related to for R3=K*T1, wherein K is nonlinear coefficient, T1Represent nuclear temperature in IGBT.
Further, included according to the air quantity of the temperature control cooling fan of the IGBT kernels：Receive IGBT kernels
Current Temperatures, contrast link units IGBT kernels most suitable operating temperature, calculate blower fan discharge quantity of fan；Directly control frequency conversion
Device, changes rotation speed of fan, reaches to the temperature controlled purpose of link units IGBT kernels.
Further, the most suitable operating temperature range of IGBT kernels is set as 25 DEG C -75 DEG C.
Further, the most suitable operating temperature of IGBT kernels is 25 DEG C.
Further, when the temperature rise of IGBT kernels, the power of rise frequency converter output, motor speed becomes big, wind
Speed becomes big；When nuclear temperature is higher than the first setting value in IGBT, motor output maximum (top) speed, wind speed maintains maximum；Work as IGBT
During the temperature reduction of kernel, the power of reduction frequency converter output, machine rotating speed diminishes, wind speed step-down；When nuclear temperature is less than in IGBT
During the second setting value, wind speed keeps normal rotating speed or shut down.
The cooling system control apparatus and method for the cascade STATCOM SVG that the disclosure is provided, can be real-time
Track nuclear temperature in IGBT, it is ensured that chain type SVG link units are operated in optimum temperature state, improve operating efficiency highest；Energy
The number of starts of blower fan is effectively reduced, increase uses birthday noodle, improves blower fan work efficiency, reduces energy loss, and can control
Rotation speed of fan, reduces the noise that fan operation is brought.
Brief description of the drawings
Fig. 1 shows the knot of the cascade STATCOM SVG of one embodiment of the invention cooling system control apparatus
Structure block diagram.
Fig. 2 shows the cascade STATCOM SVG of another embodiment of the present invention cooling system control apparatus
Structured flowchart.
Fig. 3 shows the circuit diagram of the temperature signal modular converter of another embodiment of the present invention.
Fig. 4 shows the stream of the cascade STATCOM SVG of one embodiment of the invention method for controlling cooling system
Cheng Tu.
Fig. 5 shows the cascade STATCOM SVG of another embodiment of the present invention method for controlling cooling system
Flow chart.
Fig. 6-7 shows the flow chart of the chain type SVG of another embodiment of the present invention method for controlling cooling system.
Fig. 8 shows a kind of structural frames of chain type SVG of an alternative embodiment of the invention cooling system control apparatus
Figure.
Embodiment
The present invention is described more fully with reference to the accompanying drawings, wherein illustrating the exemplary embodiment of the present invention.
Fig. 1 shows the knot of the cascade STATCOM SVG of one embodiment of the invention cooling system control apparatus
Structure block diagram.As shown in figure 1, the device 100 mainly includes：
Temperature detecting module 101, installed in chain type SVG link units edge grid bipolar transistor IGBT (Insulated
Gate Bipolar Transistor, igbt) on kernel, for detecting the temperature of IGBT kernels in real time simultaneously
Generate temperature signal.
Specifically, IGBT kernels can include IGBT elements, backward dioded.
Temperature signal modular converter 102, the temperature signal for being generated according to temperature detecting module determines IGBT kernels
Temperature；
In one embodiment, temperature signal modular converter 102 receives the temperature that temperature detecting module is detected by optical fiber.
Control module 103, the air quantity for controlling cooling fan according to the Current Temperatures of the IGBT kernels.
Cascade STATCOM SVG provided in an embodiment of the present invention cooling system control apparatus, can in real time with
Nuclear temperature in track IGBT, it is ensured that chain type SVG link units are operated in optimum temperature state, improves operating efficiency highest；Can have
Effect reduces the number of starts of blower fan, and increase uses birthday noodle, improves blower fan work efficiency, reduces energy loss, and can control wind
Machine rotating speed, reduces the noise that fan operation is brought.
The temperature detecting module includes IGBT kernel thermistors, and Fig. 2 shows the chain type of another embodiment of the present invention
The structured flowchart of static reacance generator SVG cooling system control apparatus.As shown in Fig. 2 the unit temp signal modulus of conversion
Block 202 mainly includes：
Resistive voltage converting unit 2021, the temperature signal for being generated according to the IGBT kernels thermistor obtains electricity
Press signal.
A/D (Analog/Digital, Analog-digital Converter) sampling unit 2022, it is single for the resistive voltage to be changed
The voltage signal that member is obtained is converted to data signal.
Chain link control unit 2023, the resistance temperature table of comparisons for the data signal to be contrasted to memory storage is determined
Link units IGBT operating temperature, and the operating tempera-ture signal is sent to control module.In a specifically embodiment party
In formula, the corresponding relation of nuclear temperature is R in the IGBT kernels thermistor and IGBT that chain link control unit is determined3=K*T1, wherein
K is nonlinear coefficient.
Fig. 3 shows the circuit diagram of the temperature signal modular converter of another embodiment of the present invention.As shown in figure 3, R1, R2
Resistance is between 1k-10k, and D is that voltage stabilizing chip voltage class is 2.5V, and R3 is thermistor inside IGBT module, and resistance is with temperature
Degree change, is 10K or so to the maximum.Q be common triode for example：9013 triodes etc..
In one embodiment, R3 is the thermistor on IGBT, and D is set to 2.5V reference voltage source.Detection temperature
The magnitude of voltage of feedback is Vt, and the voltage and the corresponding relation of IGBT kernel thermistors that resistive voltage converting unit is determined are Vt=
2.5*R3/R2.Now, the corresponding relation of nuclear temperature is R3 in the IGBT kernels thermistor and IGBT that chain link control unit is determined
=K*T1, wherein K are nonlinear coefficient.
As shown in Fig. 2 in one embodiment, control module also includes：Comparing calculation unit 2031, for receiving work
Make temperature, contrast the most suitable operating temperature of link units IGBT kernels, calculate the discharge quantity of fan of blower fan.Speed calculation unit
2032, the discharge quantity of fan calculated according to the comparing calculation unit controls frequency converter, changes rotation speed of fan, reaches to chain link
The temperature controlled purpose of unit IGBT kernels.
In one embodiment, the most suitable operating temperature range of IGBT kernels can be set as 25 DEG C -75 DEG C.
In one embodiment, can be using the most suitable operating temperature of IGBT kernels as 25 DEG C, but compared by the way of air-cooled
It is difficult to, therefore the most suitable operating temperature range of IGBT kernels can be set as 45 DEG C -75 DEG C.
In one embodiment, control module 203 is additionally operable to：When the temperature rise of IGBT kernels, rise frequency converter is defeated
The power gone out, motor speed becomes big, and wind speed becomes big；When nuclear temperature is higher than the first setting value in IGBT, motor output is maximum to be turned
Speed, wind speed maintains maximum；When the temperature reduction of IGBT kernels, the power of reduction frequency converter output, machine rotating speed diminishes, wind speed
Step-down；When nuclear temperature is less than the second setting value in IGBT, wind speed keeps normal rotating speed or shut down.
This method carries thermistor using IGBT kernels, and voltage signal, voltage signal are converted into through temperature sensing circuit
Data signal is converted into by A/D sampling modules again, then link units controller is gone out according to data signal by computation of table lookup
Actual temperature value, then it is delivered to controller via optical fiber.
Cascade STATCOM SVG provided in an embodiment of the present invention cooling system control apparatus, mainly by temperature
Detection module, temperature signal modular converter, controller, frequency converter, blower fan etc. are constituted, and temperature detecting unit is arranged on chain type SVG
Core heat producing components link units in, nuclear temperature in detection IGBT, and is uploaded in controller, controller by optical fiber in real time
Receive after temperature signal, by calculating contrast link units IGBT most suitable operating temperature, calculating blowing machine needs to export wind
Amount, controls frequency converter after calculating, and frequency converter exports machine of directly giving a dinner for a visitor from afar, and changes the air quantity that rotation speed of fan controls blower fan with this,
Realized and cooled by radiator fan, reach the purpose directly controlled the IGBT temperature of link units.
Cascade STATCOM SVG provided in an embodiment of the present invention cooling system control apparatus, controller passes through
Frequency converter can continuously adjust rotation speed of fan to control air quantity, and then control link units IGBT operating temperature, due to blower fan
Rotating speed, so blower fan is constantly in starting state, can reduce the state of blower fan repeatedly starting and stopping with continuously adjustabe.Secondly the control
Method is a complete closed loop control method, ensure that link units IGBT operating temperature and link units IGBT reality
Temperature deviation be 2 DEG C or so, fully ensured that link units stable working state, efficiently.Rotation speed of fan is adjustable again, it is ensured that
The heat that the heat and blower fan that chain link is produced are taken away can reach balance, and the blower fan of reduction is fully loaded with the superfluous situation of air quantity so that
Blower fan work efficiency is improved, it is ensured that blower fan always works at optimum state, and then reduces the waste of the energy.
Fig. 4 shows the stream of the cascade STATCOM SVG of one embodiment of the invention method for controlling cooling system
Cheng Tu.As shown in figure 4, this method mainly includes：
Step 401, examined by the temperature on chain type SVG link units edge grid bipolar transistor IGBT kernel
Module is surveyed to detect the temperature of IGBT kernels in real time and generate temperature signal.
Step 402, the temperature signal generated according to temperature detecting module determines the temperature of IGBT kernels.
Step 403, the air quantity of cooling fan is controlled according to the Current Temperatures of the IGBT kernels.
Temperature detecting module includes IGBT kernel thermistors, and Fig. 5 shows the chain static of another embodiment of the present invention
The flow chart of reacance generator SVG method for controlling cooling system, as shown in figure 5, methods described includes：
Step 502, the temperature signal generated according to the IGBT kernels thermistor obtains voltage signal.
Step 503, voltage signal will be obtained according to the IGBT kernels thermistor and is converted to data signal.
Step 504, the resistance temperature table of comparisons for the data signal being contrasted into memory storage determines link units IGBT
Operating temperature.
Wherein, the corresponding relation of IGBT kernels thermistor and voltage is Vt=2.5*R3/R2, IGBT kernel thermistors
Corresponding relation with nuclear temperature in IGBT is R3=K*T1, wherein K is nonlinear coefficient.
Step 505, the Current Temperatures of IGBT kernels are received, the most suitable operating temperature of link units IGBT kernels is contrasted,
Calculate the discharge quantity of fan of blower fan；
Step 506, frequency converter is directly controlled, changes rotation speed of fan, reaches temperature controlled to link units IGBT kernels
Purpose.
In one embodiment, the most suitable operating temperature range of IGBT kernels is set as 25 DEG C -75 DEG C.Specifically,
The most suitable operating temperature of IGBT kernels is 25 DEG C.
In one embodiment, when the temperature rise of IGBT kernels, the power of rise frequency converter output, motor speed becomes
Greatly, wind speed becomes big；When nuclear temperature is higher than the first setting value in IGBT, motor output maximum (top) speed, wind speed maintains maximum；When
During the temperature reduction of IGBT kernels, the power of reduction frequency converter output, machine rotating speed diminishes, wind speed step-down；When nuclear temperature in IGBT
During less than the second setting value, wind speed keeps normal rotating speed or shut down.
Fig. 6-7 shows the flow chart of the chain type SVG of another embodiment of the present invention method for controlling cooling system, such as Fig. 6
Shown, methods described includes：Thermistor is carried using IGBT kernels, voltage signal, voltage are converted into through temperature sensing circuit
Signal is converted into data signal by A/D sampling modules again, and then link units controller passes through meter of tabling look-up according to data signal
Actual temperature value is calculated, then controller is delivered to via optical fiber.
As shown in fig. 7, this method is received after temperature signal including controller, by calculating contrast link units IGBT's
Most suitable operating temperature, calculating blowing machine needs discharge quantity of fan, so as to go directly to control frequency converter, change rotation speed of fan, reaches pair
The purpose of chain link IGBT temperature control.Specific comparing calculation is as described above, here is omitted.
The device and method that the present invention is provided can be applied in cascade STATCOM equipment water cooling system.
It is arranged on by temperature detecting unit in link units, load data collection and conversion.Controller becomes as control unit, control
The frequency of frequency device, so as to control rotation speed of fan, realizes the closed-loop control to link units IGBT temperature, can be with real-time tracking IGBT
Interior nuclear temperature, it is ensured that chain type SVG link units are operated in optimum temperature state, improves operating efficiency highest；Can effectively it reduce
The number of starts of blower fan, increase uses birthday noodle, improves blower fan work efficiency, reduces energy loss, and can control rotation speed of fan,
Reduce the noise that fan operation is brought.
Fig. 8 shows a kind of structural frames of chain type SVG of an alternative embodiment of the invention cooling system control apparatus
Figure.Chain type SVG cooling system control apparatus 800 can be possess the host server of computing capability, personal computer PC or
The portable portable computer of person, mobile terminal or other-end etc..The specific embodiment of the invention is not to calculate node
Implement and limit.
Chain type SVG cooling system control apparatus 800 includes processor (processor) 801, communication interface
(Communications Interface) 802, memory (memory) 803 and bus 804.Wherein, processor 801, communication
Interface 802 and memory 803 complete mutual communication by bus 804.
Communication interface 802 is used for and network device communications, and wherein the network equipment includes such as Virtual Machine Manager center, shared
Storage etc..
Processor 801 is used for configuration processor.Processor 801 can be a central processor CPU, or can be special
Integrated circuit ASIC (Application Specific Integrated Circuit), or be arranged to implement this hair
One or more integrated circuits of bright embodiment.
Memory 830 is used to deposit file.Memory 830 can include high-speed RAM memory, also can also include non-volatile
Property memory (non-volatile memory), for example, at least one magnetic disk storage.Memory 830 can also be memory
Array.Memory 830 is also possible to by piecemeal, and block can be combined into virtual volume by certain rule.
In one embodiment, said procedure can be to include the program code of computer-managed instruction.The program is specific
It can be used for：It is real by the temperature detecting module on chain type SVG link units edge grid bipolar transistor IGBT kernel
When detection IGBT kernels temperature and generate temperature signal；The temperature signal generated according to temperature detecting module determines IGBT kernels
Temperature；The air quantity of cooling fan is controlled according to the Current Temperatures of the IGBT kernels.
In one embodiment, the temperature detecting module includes IGBT kernel thermistors, according to temperature detecting module
The temperature signal of generation determines that the temperature of IGBT kernels includes：Obtained according to the temperature signal that the IGBT kernels thermistor is generated
Take voltage signal；Voltage signal will be obtained according to the IGBT kernels thermistor and be converted to data signal；The numeral is believed
The resistance temperature table of comparisons of number contrast memory storage determines link units IGBT operating temperature.
In one embodiment, the corresponding relation of IGBT kernels thermistor and voltage is Vt=2.5*R3/R2, wherein Vt
Represent magnitude of voltage, R3Thermistor resistance is represented, IGBT kernels thermistor and IGBT kernel temperature that chain link control unit is determined
The corresponding relation of degree is R3=K*T1, wherein K is nonlinear coefficient, T1Represent nuclear temperature in IGBT.
In one embodiment, included according to the air quantity of the temperature control cooling fan of the IGBT kernels：Receive
The Current Temperatures of IGBT kernels, contrast the most suitable operating temperature of link units IGBT kernels, calculate the discharge quantity of fan of blower fan；Directly
Frequency converter is controlled, changes rotation speed of fan, reaches to the temperature controlled purpose of link units IGBT kernels.
In one embodiment, the most suitable operating temperature range of IGBT kernels is set as 25 DEG C -75 DEG C.
In one embodiment, the most suitable operating temperature of IGBT kernels is 25 DEG C.
In one embodiment, when the temperature rise of IGBT kernels, the power of rise frequency converter output, motor speed becomes
Greatly, wind speed becomes big；When nuclear temperature is higher than the first setting value in IGBT, motor output maximum (top) speed, wind speed maintains maximum；
When the temperature reduction of IGBT kernels, the power of reduction frequency converter output, machine rotating speed diminishes, wind speed step-down；When
When nuclear temperature is less than the second setting value in IGBT, wind speed keeps normal rotating speed or shut down.
Those of ordinary skill in the art are it is to be appreciated that each exemplary cell and algorithm in embodiment described herein
Step, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions actually with hardware also
It is software form to realize, depending on the application-specific and design constraint of technical scheme.Professional and technical personnel can be directed to
Specific application selects different methods to realize described function, but this realization is it is not considered that beyond the model of the present invention
Enclose.
If using in the form of computer software come realize function and as independent production marketing or in use, if certain
It is believed that all or part (such as the part contributed to prior art) of technical scheme is in terms of in degree
What the form of calculation machine software product embodied.The computer software product is generally stored inside the non-volatile memories of embodied on computer readable
In medium, including some instructions are to cause computer equipment (can be personal computer, server or network equipment etc.)
Perform all or part of step of various embodiments of the present invention method.And foregoing storage medium include USB flash disk, it is mobile hard disk, read-only
Memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or
Person's CD etc. is various can be with the medium of store program codes.
Description of the invention is provided for the sake of example and description, and is not exhaustively or by the present invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Select and retouch
State embodiment and be more preferably to illustrate the principle and practical application of the present invention, and one of ordinary skill in the art is managed
The solution present invention is so as to design the various embodiments with various modifications suitable for special-purpose.
Claims (8)
1. a kind of cascade STATCOM SVG cooling system control apparatus, it is characterised in that including：
Temperature detecting module, on chain type SVG link units edge grid bipolar transistor IGBT kernel, for examining in real time
Survey the temperature of IGBT kernels and generate temperature signal,
Temperature signal modular converter, the temperature signal for being generated according to temperature detecting module determines the temperature of IGBT kernels；
Control module, the air quantity for controlling cooling fan according to the Current Temperatures of the IGBT kernels；
The temperature detecting module includes IGBT kernel thermistors, and temperature signal modular converter includes：
Resistive voltage converting unit, the temperature signal for being generated according to the IGBT kernels thermistor obtains voltage signal；
A/D sampling units, the voltage signal for the resistive voltage converting unit to be obtained is converted to data signal；
Chain link control unit, the resistance temperature table of comparisons for the data signal to be contrasted to memory storage determines link units
IGBT operating temperature, and the operating tempera-ture signal is sent to control module；
The voltage and the corresponding relation of IGBT kernel thermistors that resistive voltage converting unit is determined are Vt=2.5*R3/R2, its
Middle Vt represents magnitude of voltage, and R2 is current-limiting resistance, and R3 is the thermistor inside IGBT,
The corresponding relation of nuclear temperature is R in the IGBT kernels thermistor and IGBT that chain link control unit is determined3=K*T1, wherein K
For nonlinear coefficient, T1Represent nuclear temperature in IGBT.
2. device according to claim 1, it is characterised in that control module includes：
Comparing calculation unit, for receiving operating temperature, contrasts the most suitable operating temperature of link units IGBT kernels, calculates wind
The discharge quantity of fan of machine；
Speed calculation unit, the discharge quantity of fan calculated according to the comparing calculation unit controls frequency converter, changes blower fan and turns
Speed, reaches to the temperature controlled purpose of link units IGBT kernels.
3. device according to claim 2, it is characterised in that the most suitable operating temperature range of IGBT kernels is set as 25
℃-75℃。
4. device according to claim 2, it is characterised in that control module is additionally operable to：
When the temperature rise of IGBT kernels, the power of rise frequency converter output, motor speed becomes big, and wind speed becomes big；Work as IGBT
When interior nuclear temperature is higher than the first setting value, motor output maximum (top) speed, wind speed maintains maximum；
When the temperature reduction of IGBT kernels, the power of reduction frequency converter output, machine rotating speed diminishes, wind speed step-down；When in IGBT
When nuclear temperature is less than the second setting value, wind speed keeps normal rotating speed or shut down.
5. device according to claim 1, it is characterised in that temperature signal modular converter receives temperature detection by optical fiber
The temperature of module detection；
And/or
IGBT kernels include IGBT elements, backward dioded.
6. a kind of cascade STATCOM SVG method for controlling cooling system, it is characterised in that including：
Examined in real time by the temperature detecting module on chain type SVG link units edge grid bipolar transistor IGBT kernel
Survey the temperature of IGBT kernels and generate temperature signal,
The temperature signal generated according to temperature detecting module determines the temperature of IGBT kernels；
The air quantity of cooling fan is controlled according to the Current Temperatures of the IGBT kernels；
The temperature detecting module includes IGBT kernel thermistors, and the temperature signal generated according to temperature detecting module is determined
The temperature of IGBT kernels includes：
The temperature signal generated according to the IGBT kernels thermistor obtains voltage signal；
Voltage signal will be obtained according to the IGBT kernels thermistor and be converted to data signal；
The resistance temperature table of comparisons that the data signal is contrasted into memory storage determines link units IGBT operating temperature；
The corresponding relation of IGBT kernels thermistor and voltage is Vt=2.5*R3/R2, wherein VtRepresent magnitude of voltage, R3Represent temperature-sensitive
Resistance, R2 is current-limiting resistance,
The corresponding relation of nuclear temperature is R in the IGBT kernels thermistor and IGBT that chain link control unit is determined3=K*T1, wherein K
For nonlinear coefficient, T1Represent nuclear temperature in IGBT.
7. method according to claim 6, it is characterised in that
Included according to the air quantity of the temperature control cooling fan of the IGBT kernels：The Current Temperatures of IGBT kernels are received, it is right
Than the most suitable operating temperature of link units IGBT kernels, the discharge quantity of fan of blower fan is calculated；Frequency converter is directly controlled, changes blower fan and turns
Speed, reaches to the temperature controlled purpose of link units IGBT kernels；
With
Methods described also includes：When the temperature rise of IGBT kernels, the power of rise frequency converter output, motor speed becomes big,
Wind speed becomes big；When nuclear temperature is higher than the first setting value in IGBT, motor output maximum (top) speed, wind speed maintains maximum；When
During the temperature reduction of IGBT kernels, the power of reduction frequency converter output, machine rotating speed diminishes, wind speed step-down；When nuclear temperature in IGBT
During less than the second setting value, wind speed keeps normal rotating speed or shut down.
8. method according to claim 7, it is characterised in that the most suitable operating temperature range of IGBT kernels is set as 25
℃-75℃。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510412880.8A CN104953491B (en) | 2015-07-14 | 2015-07-14 | Chain type SVG cooling system control apparatus and method |
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| CN204858347U (en) * | 2015-07-14 | 2015-12-09 | 山东蓝天电能科技有限公司 | Chain SVG's cooling system controlling means |
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Effective date of registration: 20190719 Address after: 264006 No. 16 Wuhan Street, Yantai Development Zone, Shandong Province Patentee after: SHANDONG HADA ELECTRIC Co.,Ltd. Address before: 264000 No. 16 Wuhan Street, Yantai Development Zone, Shandong Province Patentee before: SHANDONG BLUE POWER TECHNOLOGY Co.,Ltd. |
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Denomination of invention: Control device and method for cooling system of chain SVG Granted publication date: 20170929 Pledgee: Hua Xia Bank Co.,Ltd. Yantai Free Trade Zone Sub branch Pledgor: SHANDONG HADA ELECTRIC Co.,Ltd. Registration number: Y2024980034191 |