CN204720987U - A kind of Active Power Filter-APF - Google Patents
A kind of Active Power Filter-APF Download PDFInfo
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- CN204720987U CN204720987U CN201520493182.0U CN201520493182U CN204720987U CN 204720987 U CN204720987 U CN 204720987U CN 201520493182 U CN201520493182 U CN 201520493182U CN 204720987 U CN204720987 U CN 204720987U
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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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- 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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Abstract
The utility model provides a kind of Active Power Filter-APF, comprises control module, filtering sampling module, power inverting module, driver module and human-computer dialogue module; Filtering sampling module input connects power inverting module DC side and load-side three-phase alternating current, the output link control module input of filtering sampling module and human-computer dialogue module, control module output connects human-computer dialogue module and driver module input respectively, driver module output connects power inverting module input, and power inverting module output connects power module and load.The power supply quality of power distribution network is polluted, significantly improved to the utility model quality of power supply can efficiently administered in power distribution network; and then reach the energy-saving and cost-reducing target of the safe operation of protection power distribution network, extension device useful life and power distribution network, be a kind of safety, environmental protection and energy-conservation green high-tech product.
Description
Technical field
The utility model relates to distribution network electric energy quality and administers field, especially a kind of Active Power Filter-APF.
Background technology
Today, the nonlinear loads such as power electronic equipment are not had to be inconceivable in many production processes, but along with the large-scale application of nonlinear load, it will produce a large amount of harmonic injection in electrical network, make line voltage, electric current produce distortion, this " pollution " can cause serious harm to electric power safety and equipment.According to incompletely statistics, the economic loss that the whole world causes because of power quality problem is every year up to 1,000 hundred million dollars, and these data are also in continuous rising, and power quality problem, become the huge hidden danger affecting power grid security, power quality controlling is very urgent.
What require the quality of power supply along with people improves constantly, and power quality controlling technology, also thereupon at development, mainly experienced by three developing stage: passive electric filtering technology, combination of power filtering technique, active power filtering technology.From the development course of power quality controlling technology, the active power filtering technology of superior performance instead of the passive electric filtering technology of low performance gradually.
The performance of Active Power Filter Technology is much better than passive filtering technology, it represent the future directions of power quality controlling.
Summary of the invention
For overcoming the shortcoming of prior art with not enough, the utility model provides the Active Power Filter-APF of a kind of complete function, function admirable, and the technical scheme adopted is:
A kind of Active Power Filter-APF, comprises control module, filtering sampling module, power inverting module, driver module, human-computer dialogue module and power module; Filtering sampling module input connects DC side and the load-side three-phase alternating current of power inverting module, the output link control module input of filtering sampling module and human-computer dialogue module, control module output connects human-computer dialogue module and driver module input respectively, driver module output connects power inverting module input, and power inverting module output connects power module and load respectively.
Described power module connects power inverting module, driver module, control module, filtering sampling loop respectively.Power module exports totally 5 tunnels, respectively: 1 tunnel+24V1, for radiator fan provides working power; 1 tunnel+15V1 provides working power for relay and driver module; 1 tunnel+15V2 provides working power for control core plate; 1 tunnel+15V3, road+15V3 provide working power for sampled operational amplifier and Hall current sensor.
Further illustrate, described control module comprises FPGA processor, A/D sampling circuit, communication interface, remote signalling input and remote control and exports, be responsible for the electric current of Active Power Filter-APF, voltage data collection, calculating and process, the carrying out of the on off state of Active Power Filter-APF is controlled, monitors and judged, control and monitor the action of output inverter switch, inversion goes out variable voltage.
Further illustrate, described filtering sampling module establishes acquisition circuit, overvoltage/current protection loop, main switching loop, charge circuit, high-frequency inductor and high-pass filtering loop successively, mainly completes filtering, electric current and voltage collection, switch control rule and defencive function.
Further illustrate, described acquisition circuit comprises voltage acquisition circuit and current acquisition circuit, described voltage acquisition circuit gathers DC voltage and the load-side three-phase voltage of power inverting module, a kind of Active Power Filter-APF three-phase output current described in described current acquisition circuit gathers and load-side three-phase current.
Further illustrate, described voltage acquisition circuit comprises voltage transformer and voltage hall sensor, and voltage transformer completes collection and the conversion of three-phase voltage, and voltage hall sensor completes collection and the conversion of positive negative dc voltage.Described current acquisition circuit comprises current transformer and current Hall transducer, and current transformer completes collection and the conversion of load-side three-phase current, and current Hall transducer completes collection and the conversion of described a kind of Active Power Filter-APF three-phase output current.
Further illustrate, described power inverting module comprises inverter loop, storage capacitor loop, principal reactance loop, absorbing circuit and radiator, mainly accepts the PWM of FPGA control board, produces variable frequency and variable current.
Further illustrate, described inverter loop comprises three-phase tri-level inverter, and every phase inverter is made up of 16 IGBT of 4 series connection 4 parallel connections, shares power output, improves dielectric voltage withstand grade.
Further illustrate, described driver module comprises isolated variable power supply, drive amplification circuit composition, and wherein every circuitry phase has 4 tunnels independently to drive, the work of major control inverter.
The beneficial effects of the utility model are:
The utility model complete function, can realize intelligent filtering harmonic wave, dynamic passive compensation, balanced three-phase load function simultaneously.
Filtering sampling module detects load-side current waveform in real time, and obtaining after the analysis of control module needs the harmonic current component of compensation and send pwm control signal to driver module, and exports analysis result by man-machine module; Driver module receives from after the pwm control signal of control module, control power inverting module work, size is relative, the pulse current injectingt electric power system that direction is contrary, realize filtering (counteracting) humorous wave energy, thus improve electrical system security reliability, reach the object of energy efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is outside schematic diagram of the present utility model.
Embodiment
Be described in further detail embodiment of the present utility model below in conjunction with accompanying drawing, wherein in institute's drawings attached, identical label represents same or similar parts, and the accompanying drawing in specification is reduced form, only for understanding concrete structure of the present utility model.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection range of the present utility model.
The utility model discloses a kind of Active Power Filter-APF, implement to be described to the utility model below in conjunction with accompanying drawing.
Fig. 2 is outside schematic diagram of the present utility model, and comprise the link between electrical network, load, Active Power Filter-APF, current transformer and installation, current transformer is arranged on load-side, and namely current transformer is arranged between device access point and load.
As shown in Figure 1, a kind of Active Power Filter-APF, comprises control module, filtering sampling module, power inverting module, driver module, human-computer dialogue module and power module; Filtering sampling module input connects DC side and the load-side three-phase alternating current of power inverting module, the output link control module input of filtering sampling module and human-computer dialogue module, control module output connects human-computer dialogue module and driver module input respectively, driver module output connects power inverting module input, and power inverting module output connects power module and load.
Described power module connects power inverting module, driver module, control module, filtering sampling loop respectively.Power module exports totally 5 tunnels, respectively: 1 tunnel+24V1, for radiator fan provides working power; 1 tunnel+15V1 provides working power for relay and driver module; 1 tunnel+15V2 provides working power for control core plate; 1 tunnel+15V3, road+15V3 provide working power for sampled operational amplifier and Hall current sensor.
FPGA processor in described control module adopts a slice Altera hurricane II Series FPGA, model is EP2C35484C6, and dominant frequency 100MHz, A/D sampling circuit uses 2 AD7238, AD7238 is the SAR ADC of a 8 passages, 12 bit strip sign bits, adopts dual power supply.Communication interface is provided with two optional serial ports of RS232/RS485, and remote signalling input and remote control export and be respectively provided with eight tunnels.
Described filtering sampling module comprises acquisition circuit, overvoltage/current protection loop, main switching loop, charge circuit, high-frequency inductor and high-pass filtering loop.Described acquisition circuit comprises voltage acquisition circuit and current acquisition circuit, described voltage acquisition circuit gathers DC voltage and the load-side three-phase voltage of power inverting module, a kind of Active Power Filter-APF three-phase output current described in described current acquisition circuit gathers and load-side three-phase current.
Described power inverting module comprises inverter loop, storage capacitor loop, principal reactance loop, absorbing circuit and radiator.Described inverter loop comprises three-phase tri-level inverter, and every phase inverter is made up of 16 IGBT of 4 series connection 4 parallel connections.Described storage capacitor loop is made up of electrochemical capacitor and grading resistor.Radiator has 6.
Described driver module comprises isolated variable power supply, drive amplification circuit composition, and wherein every circuitry phase has 4 tunnels independently to drive.
Above-described embodiment is the present invention's preferably execution mode; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (8)
1. an Active Power Filter-APF, is characterized in that, comprises control module, filtering sampling module, power inverting module, driver module, human-computer dialogue module and power module;
Filtering sampling module input connects DC side and the load-side three-phase alternating current of power inverting module, the output link control module input of filtering sampling module and human-computer dialogue module, control module output connects human-computer dialogue module and driver module input respectively, driver module output connects power inverting module input, and power inverting module output connects power module and load;
Described power module connects power inverting module, driver module, control module, filtering sampling loop respectively.
2. Active Power Filter-APF according to claim 1, is characterized in that, described control module comprises FPGA processor, A/D sampling circuit, communication interface, remote signalling input and remote control and exports.
3. Active Power Filter-APF according to claim 1, is characterized in that, described filtering sampling module comprises acquisition circuit, overvoltage/current protection loop, main switching loop, charge circuit, high-frequency inductor and high-pass filtering loop.
4. Active Power Filter-APF according to claim 3, it is characterized in that, described acquisition circuit comprises voltage acquisition circuit and current acquisition circuit, described voltage acquisition circuit gathers power inverting module DC voltage and load-side three-phase voltage, a kind of Active Power Filter-APF three-phase output current described in described current acquisition circuit gathers and load-side three-phase current.
5. Active Power Filter-APF according to claim 4, is characterized in that, described voltage acquisition circuit comprises voltage transformer and voltage hall sensor, and described current acquisition circuit comprises current transformer and current Hall transducer.
6. Active Power Filter-APF according to claim 1, is characterized in that, described power inverting module comprises inverter loop, storage capacitor loop, principal reactance loop, absorbing circuit and radiator.
7. Active Power Filter-APF according to claim 6, is characterized in that, described inverter loop comprises three-phase tri-level inverter, and every phase inverter is made up of 16 IGBT of 4 series connection 4 parallel connections.
8. Active Power Filter-APF according to claim 1, is characterized in that, described driver module comprises isolated variable power supply, drive amplification circuit composition, and wherein every circuitry phase has 4 tunnels independently to drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520493182.0U CN204720987U (en) | 2015-07-09 | 2015-07-09 | A kind of Active Power Filter-APF |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520493182.0U CN204720987U (en) | 2015-07-09 | 2015-07-09 | A kind of Active Power Filter-APF |
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| CN204720987U true CN204720987U (en) | 2015-10-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253280A (en) * | 2016-08-30 | 2016-12-21 | 江苏华强电力设备有限公司 | A kind of modularity low-voltage active harmonic treatment system of electrical network in parallel |
| CN109301848A (en) * | 2018-11-13 | 2019-02-01 | 上海光维电力科技有限公司 | A kind of active three-phase imbalance self-checking device |
-
2015
- 2015-07-09 CN CN201520493182.0U patent/CN204720987U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253280A (en) * | 2016-08-30 | 2016-12-21 | 江苏华强电力设备有限公司 | A kind of modularity low-voltage active harmonic treatment system of electrical network in parallel |
| CN109301848A (en) * | 2018-11-13 | 2019-02-01 | 上海光维电力科技有限公司 | A kind of active three-phase imbalance self-checking device |
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