CN205544280U - Smart power grids active power filter with heat dissipation function - Google Patents
Smart power grids active power filter with heat dissipation function Download PDFInfo
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- CN205544280U CN205544280U CN201620241132.8U CN201620241132U CN205544280U CN 205544280 U CN205544280 U CN 205544280U CN 201620241132 U CN201620241132 U CN 201620241132U CN 205544280 U CN205544280 U CN 205544280U
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- active power
- apf
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/20—Active power filtering [APF]
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Abstract
The utility model discloses a smart power grids active power filter with heat dissipation function, including external shell and wave filter body, be provided with a plurality of through -holes on external shell, be located the air inlet that is of external shell downside, be located the gas outlet that is of upside, be provided with rain -proof cap in the outside of every through -hole, the wave filter body include FPGA main control chip with D converting circuit, FPGA main control chip with D converting circuit be connected, inside primary treatment circuit, harmonic analysis circuit and the modulated circuit of being provided with of FPGA main control chip, D converting circuit's output and primary treatment circuit connection, the output and the harmonic analysis circuit connection of primary treatment circuit, modulated circuit's output and harmonic analysis circuit connection, the utility model discloses FPGA that the utilization has high -speed hardware parallel algorithm and a high frequency of operation has characteristics such as scientific and reasonable, advanced technology, timely, the stable height of compensation, accurate filtering harmonic for the hardware data treatment circuit that main control chip inside found carries out quantization, digital filtering and amplitude limiting processing to sample data.
Description
Technical field
This utility model relates to a kind of intelligent grid Active Power Filter-APF with heat sinking function.
Background technology
Active Power Filter-APF (APF:Active power filter) is a kind of for dynamic harmonic wave, the novel electric power electric device of compensating reactive power, it can carry out quick tracing compensation to the harmonic wave of different size and frequency, the most active, it is relative to passive LC filter, can only be for the harmonic wave of Passive intake fixed frequency and size, APF can be by sampling load current carry out each harmonic and idle separation, control and actively export the size of electric current, frequency and phase place, and quickly respond, phase induced current in payment load, achieve dynamic tracking to compensate, and not only can mend harmonic wave but also mend idle and uneven.Controllable power semiconductor is utilized to inject the electric current contrary with harmonic source current amplitude equal phase to electrical network, the total harmonic current making power supply is zero purpose reaching real-Time Compensation harmonic current, and existing wave filter is made up of instruction current computing circuit and compensation two major parts of current occuring circuit.Analog current signal is also converted to digital signal and sends into high speed numerical processor DSP and process signal by electric current in the real-time monitoring wire of instruction current computing circuit, is separated by harmonic wave first-harmonic and sends driving pulse with pulse-modulated signal form and drive IGBT power model growth mains by harmonics current amplitude to compensating current occuring circuit.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of intelligent grid Active Power Filter-APF with heat sinking function.
The purpose of this utility model is achieved through the following technical solutions: a kind of intelligent grid Active Power Filter-APF with heat sinking function, including the filtering body (8) that external shell (1) and installation are internal with external shell (1), described external shell (1) is provided with multiple through hole (3), the most externally-located housing (1) downside for air inlet, externally-located housing (1) upside for gas outlet, be provided with rainhat (4) in the outside of each through hole (3), the bottommost of through hole (3) is higher than rainhat (4) bottom of its correspondence；Described filtering body (8) include FPGA main control chip and A D change-over circuit, described FPGA main control chip and A D change-over circuit be connected；Described FPGA main control chip is internally provided with coagulation circuit, frequency analysis circuit and modulation circuit, described A the outfan of D change-over circuit be connected with coagulation circuit, the outfan of described coagulation circuit is connected with frequency analysis circuit, and the outfan of described modulation circuit is connected with frequency analysis circuit；Wherein, coagulation circuit for by through A D change-over circuit be converted to the sampled data of digital signal and carry out quantification treatment, digital filtering and amplitude limiting processing；Frequency analysis circuit, connects coagulation circuit, for the limitation signal that coagulation circuit exports is carried out frequency analysis, and is separated with first-harmonic by harmonic wave；Modulation circuit, connect frequency analysis circuit, for sending driving pulse with pulse-width modulation PWM signal form to compensating current occuring circuit, drive exterior I GBT power model, generate compensation electric current equal with mains by harmonics current amplitude, opposite polarity and inject electrical network, harmonic current compensated or offsets, actively eliminating electric harmonic.
Described air inlet and gas outlet are mounted on dust-proof cushion (6).
Described air inlet and/or gas outlet are provided with fan (5).
Electric heater (7) it is also equipped with in described external shell (1).
Being also equipped with temperature sensor in described external shell (1), temperature sensor is connected to automatic controller, and the output signal of automatic controller controls fan (5) and/or the duty of electric heater (7).
Being additionally provided with microprocessor in described FPGA main control chip, described microprocessor connects frequency analysis circuit；Wherein, microprocessor is used for carrying out each electrical parameter display process and human-computer interactive control processes, and is connected with PORT COM and display port.
Described filtering body also include with A the signal processing circuit that is connected of the input of D change-over circuit, electrical network the voltage signal gathered and load current signal through signal processing circuit carry out signal amplify and Shape correction in case be transferred to A D change-over circuit carry out high speed A D conversion.
Described filtering body also includes drive circuit, inverter circuit and the filter circuit being sequentially connected with, and the input of described drive circuit is connected with modulation circuit；Wherein, PWM produced by modulation circuit pulse is modulated by described drive circuit by the level needed for PWM pulse amplifying to exterior I GBT power model；The PWM pulse exported by drive circuit generates compensation electric current equal with mains by harmonics current amplitude, opposite polarity through described inverter circuit modulation；Compensation electric current medium-high frequency carrier current is filtered by the filter circuit described in utilization so that the compensation electric current injected in electrical network from filter circuit is entirely mains by harmonics current amplitude compensation electric current equal, opposite polarity.
Described inverter circuit is IGBT inverter circuit.
The beneficial effects of the utility model are:
(1) this utility model is provided with multiple through hole on the sidewall of housing, multiple through holes are generally divided into two regions, and a region is positioned at above the sidewall of housing, near the position of case top, the through hole in this region is as gas outlet, for discharging the high-temperature gas in housing；Another region is positioned at below the sidewall of housing, and this region is positioned at the bottom of housing, and the through hole in this region is as air inlet；Housing is provided with the rainhat corresponding with through hole, rainhat entirety is curved, its top is connected on housing, its lower end and housing at intervals and enclose formation pore, this hole is horizontally oriented, the rainhat of top plays rainproof effect, rainwater is avoided to enter enclosure interior from through hole, and, the level of through hole position, the end is disposed above the rainhat position, the end of its correspondence, rainwater can be avoided to enter in housing along the sidewall of housing, waterproof effect is played while ventilating, improve the practicality of Cabinet, the problem solving aerofluxus.
(2) this utility model Active Power Filter-APF, installs dust-proof cushion in the region of air inlet and gas outlet, and the preferred structure of dust-proof cushion is one block of integrally-built foam-rubber cushion, and it is positioned at air inlet and gas outlet, plays the purpose preventing dust；The fan installed at air inlet is supply fan, install in gas outlet for exhaust fan, air speed in cabinet body can be improved by the installation of supply fan and exhaust fan, thus improve heat exchange efficiency, in order to resist severe cold, adapt to the multiformity of outdoor work environment, electric heater can be installed in cabinet body, electric heater can be multiple, different positions can also be distributed in, when outside air temperature is too low, it is unfavorable for when electronic component works, can be heated by electric heater, simultaneously close off fan, make the atmosphere draught-free within cabinet body, thus keep the most suitable temperature, be conducive to improving the life-span of electronic component.
(3) this utility model Active Power Filter-APF, using automatic controller as control core, one or more temperature sensor is installed in cabinet body, temperature sensor gathers the intrinsic temperature data of rack and delivers to automatic controller, automatic controller compares calculating to temperature data, and rotate or the control signal of electric heater work as controlling fan, the rotating speed etc. of the quantity of fan work, fan can be controlled, it is also possible to control the heating power of electric heater, heat time heating time etc. parameter according to the value of temperature.
(4) this utility model utilizes the hardware data process circuit that the FPGA with high-speed hardware parallel algorithm and high workload frequency is main control chip internal build that sampled data is carried out quantification treatment, digital filtering and amplitude limiting processing, process through frequency analysis again and send driving pulse with pulse-width modulation PWM signal form to compensating current occuring circuit in time, drive IGBT inverter circuit, generate equal with mains by harmonics current amplitude, opposite polarity compensation electric current injects electrical network, harmonic current is compensated timely or offsets, actively eliminate electric harmonic, total has scientific and reasonable, advanced technology, compensate in time, stability is high, accurately filter the features such as harmonic wave.
(5) modulation circuit described in the utility model can send driving pulse with pulse-width modulation PWM impulse form to compensating current occuring circuit, has the advantage that noise resistivity is superpower and influence of noise can be reduced to minimum.
Accompanying drawing explanation
Fig. 1 is this utility model external shell schematic diagram；
Fig. 2 is this utility model through hole cross-sectional structure schematic diagram；
Fig. 3 is filtering body theory diagram；
In figure, 1-housing, 2-cabinet door, 3-through hole, 4-rainhat, 5-fan, 6-dust-proof cushion, 7-electric heater, 8-filtering body.
Detailed description of the invention
The technical solution of the utility model is described in further detail below in conjunction with the accompanying drawings:
As depicted in figs. 1 and 2, a kind of intelligent grid Active Power Filter-APF with heat sinking function, including the filtering body 8 within external shell 1 and installation and external shell 1, described external shell 1 is provided with multiple through hole 3, on the downside of the most externally-located housing 1 for air inlet, on the upside of externally-located housing 1 for gas outlet, the outside of each through hole 3 is provided with rainhat 4, the bottommost of through hole 3 higher than the rainhat 4 of its correspondence bottom.Described air inlet and gas outlet are mounted on dust-proof cushion 6.Described air inlet and/or gas outlet are provided with fan 5.It is also equipped with electric heater 7 in described external shell 1.Being also equipped with temperature sensor in described external shell 1, temperature sensor is connected to automatic controller, and the output signal of automatic controller controls fan 5 and/or the duty of electric heater 7.
Specifically, external shell 1 entirety is cuboid, it is configured with a cabinet door 2, filtering body 8 is installed in external shell 1, it is provided with through hole 3 in the both sides of external shell 1, through hole 3 is distributed in the upper and lower of external shell 1 sidewall, in lower section for air inlet, on top for gas outlet, air inlet and gas outlet are mounted on dust-proof cushion 6 and fan 5, dust-proof cushion 6 uses the sponge of monoblock to make and between fan 5 and cabinet body 1, and the fan 5 that wherein air inlet is installed be supply fan, in gas outlet installation for exhaust fan；External shell 1 is provided with the rainhat 4 corresponding with through hole 3, rainhat 4 is overall curved, its top is connected on external shell 1, its lower end and external shell 1 at intervals and enclose formation pore, this hole is horizontally oriented, the rainhat 4 of top plays rainproof effect, it is to avoid rainwater enters inside cabinet body from through hole 3, and the level of through hole 3 position, the end is disposed above rainhat 4 position, the end of its correspondence；Multiple electric heater 7 is installed in housing 1, it is also equipped with automatic controller, temperature sensor and alarm, automatic controller can use circuit board to realize, PLC can also be used to realize, temperature sensor controls fan 5 and the control signal of electric heater 7 work the most, temperature sensor gathers the air themperature in external shell 1, and it is transferred to automatic controller, automatic controller compares calculating according to parameter set in advance, when a certain situation during temperature is setting value, fan and electric heater are in duty set in advance.
As it is shown on figure 3, described filtering body 2 include FPGA main control chip and A D change-over circuit, described FPGA main control chip and A D change-over circuit be connected；Described FPGA main control chip is internally provided with coagulation circuit, frequency analysis circuit and modulation circuit, described A the outfan of D change-over circuit be connected with coagulation circuit, the outfan of described coagulation circuit is connected with frequency analysis circuit, and the outfan of described modulation circuit is connected with frequency analysis circuit；Wherein, coagulation circuit for by through A D change-over circuit be converted to the sampled data of digital signal and carry out quantification treatment, digital filtering and amplitude limiting processing；Frequency analysis circuit, connects coagulation circuit, for the limitation signal that coagulation circuit exports is carried out frequency analysis, and is separated with first-harmonic by harmonic wave；Modulation circuit, connect frequency analysis circuit, for sending driving pulse with pulse-width modulation PWM signal form to compensating current occuring circuit, drive exterior I GBT power model, generate compensation electric current equal with mains by harmonics current amplitude, opposite polarity and inject electrical network, harmonic current compensated or offsets, actively eliminating electric harmonic.Utilize and have inside the FPGA main control chip of high-speed hardware parallel algorithm and high workload frequency by coagulation circuit, frequency analysis circuit, the data acquisition processing circuit carried with modulation circuit carries out quantification treatment to sampled data, digital filtering and amplitude limiting processing, process through frequency analysis again and send driving pulse with pulse-width modulation PWM signal form to compensating current occuring circuit in time, drive IGBT inverter circuit, generate equal with mains by harmonics current amplitude, opposite polarity compensation electric current injects electrical network, harmonic current is compensated timely or offsets, actively eliminate electric harmonic, total has scientific and reasonable, advanced technology, compensate in time, stability is high, accurately filter the features such as harmonic wave.
Being additionally provided with microprocessor in described FPGA main control chip, described microprocessor connects frequency analysis circuit；Wherein, microprocessor is used for carrying out each electrical parameter display process and human-computer interactive control processes, and is connected with PORT COM and display port.Utilize PORT COM to link up with man-machine interaction assembly, and by display port, each electrical parameter after FPGA main control chip processes is exported and shows on display device.
Described filtering body also include with A the signal processing circuit that is connected of the input of D change-over circuit, electrical network the voltage signal gathered and load current signal through signal processing circuit carry out signal amplify and Shape correction in case be transferred to A D change-over circuit carry out high speed A D conversion.
Described filtering body also includes drive circuit, inverter circuit and the filter circuit being sequentially connected with, and the input of described drive circuit is connected with modulation circuit；Wherein, PWM produced by modulation circuit pulse is modulated by described drive circuit by the level needed for PWM pulse amplifying to exterior I GBT power model；The PWM pulse exported by drive circuit generates compensation electric current equal with mains by harmonics current amplitude, opposite polarity through described inverter circuit modulation；Compensation electric current medium-high frequency carrier current is filtered by the filter circuit described in utilization so that the compensation electric current injected in electrical network from filter circuit is entirely mains by harmonics current amplitude compensation electric current equal, opposite polarity.
Described inverter circuit is IGBT inverter circuit.IGBT (Insulated Gate Bipolar Transistor), insulated gate bipolar transistor, the compound full-control type voltage driven type power semiconductor being made up of BJT (double pole triode) and MOS (insulating gate type field effect tube), has advantage of both the high input impedance of MOSFET and the low conduction voltage drop of GTR concurrently.Than other power tubes have driving power little, output electric current is big, breakdown voltage is high, operating frequency advantages of higher.
Claims (9)
1. the intelligent grid Active Power Filter-APF with heat sinking function, including the filtering body (8) that external shell (1) and installation are internal with external shell (1), it is characterized in that: on described external shell (1), be provided with multiple through hole (3), the most externally-located housing (1) downside for air inlet, externally-located housing (1) upside for gas outlet, be provided with rainhat (4) in the outside of each through hole (3), the bottommost of through hole (3) is higher than rainhat (4) bottom of its correspondence；Described filtering body (8) include FPGA main control chip and A D change-over circuit, described FPGA main control chip and A D change-over circuit be connected；Described FPGA main control chip is internally provided with coagulation circuit, frequency analysis circuit and modulation circuit, described A the outfan of D change-over circuit be connected with coagulation circuit, the outfan of described coagulation circuit is connected with frequency analysis circuit, and the outfan of described modulation circuit is connected with frequency analysis circuit；Wherein, coagulation circuit for by through A D change-over circuit be converted to the sampled data of digital signal and carry out quantification treatment, digital filtering and amplitude limiting processing；Frequency analysis circuit, connects coagulation circuit, for the limitation signal that coagulation circuit exports is carried out frequency analysis, and is separated with first-harmonic by harmonic wave；Modulation circuit, connect frequency analysis circuit, for sending driving pulse with pulse-width modulation PWM signal form to compensating current occuring circuit, drive exterior I GBT power model, generate compensation electric current equal with mains by harmonics current amplitude, opposite polarity and inject electrical network, harmonic current compensated or offsets, actively eliminating electric harmonic.
A kind of intelligent grid Active Power Filter-APF with heat sinking function the most according to claim 1, it is characterised in that: on described air inlet and gas outlet, it is mounted on dust-proof cushion (6).
A kind of intelligent grid Active Power Filter-APF with heat sinking function the most according to claim 2, it is characterised in that: fan (5) is installed on described air inlet and/or gas outlet.
4. according to a kind of intelligent grid Active Power Filter-APF with heat sinking function described in any one in claim 1 to 3, it is characterised in that: in described external shell (1), it is also equipped with electric heater (7).
5. according to a kind of intelligent grid Active Power Filter-APF with heat sinking function described in claim 4, it is characterized in that: in described external shell (1), be also equipped with temperature sensor, temperature sensor is connected to automatic controller, and the output signal of automatic controller controls fan (5) and/or the duty of electric heater (7).
A kind of intelligent grid Active Power Filter-APF with heat sinking function the most according to claim 1, it is characterised in that: being additionally provided with microprocessor in described FPGA main control chip, described microprocessor connects frequency analysis circuit；Wherein, microprocessor is used for carrying out each electrical parameter display process and human-computer interactive control processes, and is connected with PORT COM and display port.
A kind of intelligent grid Active Power Filter-APF with heat sinking function the most according to claim 1, it is characterized in that: described filtering body (8) also include with A the signal processing circuit that is connected of the input of D change-over circuit, electrical network the voltage signal gathered and load current signal through signal processing circuit carry out signal amplify and Shape correction in case be transferred to A D change-over circuit carry out high speed A D conversion.
A kind of intelligent grid Active Power Filter-APF with heat sinking function the most according to claim 1, it is characterized in that: described filtering body (8) also includes drive circuit, inverter circuit and the filter circuit being sequentially connected with, and the input of described drive circuit is connected with modulation circuit；Wherein, PWM produced by modulation circuit pulse is modulated by described drive circuit by the level needed for PWM pulse amplifying to exterior I GBT power model；The PWM pulse exported by drive circuit generates compensation electric current equal with mains by harmonics current amplitude, opposite polarity through described inverter circuit modulation；Compensation electric current medium-high frequency carrier current is filtered by the filter circuit described in utilization so that the compensation electric current injected in electrical network from filter circuit is entirely mains by harmonics current amplitude compensation electric current equal, opposite polarity.
A kind of intelligent grid Active Power Filter-APF with heat sinking function the most according to claim 8, it is characterised in that: described inverter circuit is IGBT inverter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620241132.8U CN205544280U (en) | 2016-03-28 | 2016-03-28 | Smart power grids active power filter with heat dissipation function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620241132.8U CN205544280U (en) | 2016-03-28 | 2016-03-28 | Smart power grids active power filter with heat dissipation function |
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| CN205544280U true CN205544280U (en) | 2016-08-31 |
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| CN201620241132.8U Expired - Fee Related CN205544280U (en) | 2016-03-28 | 2016-03-28 | Smart power grids active power filter with heat dissipation function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656045A (en) * | 2016-03-28 | 2016-06-08 | 成都天进仪器有限公司 | Intelligent grid active power filter with heat dissipation function |
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2016
- 2016-03-28 CN CN201620241132.8U patent/CN205544280U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656045A (en) * | 2016-03-28 | 2016-06-08 | 成都天进仪器有限公司 | Intelligent grid active power filter with heat dissipation function |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20170328 |