CN2865106Y - Powered electric filtering device capable of multiple parallel expanding - Google Patents
Powered electric filtering device capable of multiple parallel expanding Download PDFInfo
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- CN2865106Y CN2865106Y CNU2005200482157U CN200520048215U CN2865106Y CN 2865106 Y CN2865106 Y CN 2865106Y CN U2005200482157 U CNU2005200482157 U CN U2005200482157U CN 200520048215 U CN200520048215 U CN 200520048215U CN 2865106 Y CN2865106 Y CN 2865106Y
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- filter
- active power
- circuit
- apfs
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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 provides an active electric filter device that is expanded from a plurality of units connected in parallel, and belongs to the technical field of active electric filters. The utility model is mainly designed to solve the problem that the active electric filters in the prior art don't have enough capacity if they are used individually but increasing the capacity of individual filters will greatly increase the footprint and make it difficult to fabricate, transport, and arrange. It is characterized in that: the utility model comprises a plurality of active electric filters, with the output ends connected in parallel to the electric network, and the input ends of corresponding current and voltage sampling circuit connected in sequence to share a single sampling unit. The utility model is mainly used in active electric filters for control of high-capacity harmonics.
Description
Technical field
The utility model relates to Active Power Filter-APF, and particularly a kind of active electric filter device that can the Active Power Filter-APF of many platform independent is parallel extended belongs to the active power filtering technical field.
Background technology
Active Power Filter-APF has been widely used in the harmonic wave control of electrical network.Because great majority need the capacity of improvement harmonic wave all little, thereby the capacity of existing separate unit Active Power Filter-APF is also not very big.Need administer the bigger power grid environment of harmonic wave capacity to some, existing separate unit Active Power Filter-APF all can not meet the demands.The capacity that increases the separate unit Active Power Filter-APF certainly will increase the spatial volume that it occupies again greatly, makes again to make, transport, install difficulty, has increased the cost of single device simultaneously owing to consumption is few.
Summary of the invention
The purpose of this utility model be exactly provide at above-mentioned weak point a kind of can many parallel connection, expansion capacity, independent operating, active electric filter device that reliability is high.
Technical solution of the present utility model is: a kind of can many parallel extended active electric filter devices, comprise many Active Power Filter-APFs, it is characterized in that: the corresponding output of these many Active Power Filter-APFs is also received on the electrical network, the input of corresponding electric current, voltage sampling circuit connects successively by platform, a shared cover sampling element.
Many Active Power Filter-APFs described in the technical solution of the present utility model can be the identical Active Power Filter-APFs of capacity.
Many Active Power Filter-APFs described in the technical solution of the present utility model can also be capacity Active Power Filter-APFs inequality.
The control circuit of the Active Power Filter-APF described in the technical solution of the present utility model can be made of electric current, voltage sampling circuit, single digital signal processor DSP, man-machine interface and drive circuit.
The carrier wave filter circuit of the inverter circuit described in the technical solution of the present utility model can be to adopt star or triangle to connect by three filter branch that are made of C type filter circuit to constitute.
The utility model is because the corresponding output of Active Power Filter-APF that can many capacity is identical or different and receiving on the electrical network, the input of corresponding electric current, voltage sampling circuit connects successively by platform, every Active Power Filter-APF independent operating, neither need unified control, do not need sharing control yet, bear maximum harmonic current by power capacity separately for every, when not reaching rated current by formula
The percentage work of total load current * (this TV station rated current ÷ total specified electric current in parallel).Many parallel connections can improve the reliability of filter apparatus.The utlity model has following characteristics: (1), do not need sharing control; (2), do not need centralized control; (3), can increase and decrease platform number in parallel at any time according to customer demand, to enlarge or to dwindle filter capacity; (4), the electric current distribution is by formula carried out; (5), the single device fault can deactivate automatically, do not influence the work of whole parallel system.The utility model is mainly used in the active electric filter device of big capacity harmonic wave control.
Description of drawings
Fig. 1 is structure of the present utility model, circuit diagram;
Fig. 2 is the circuit of separate unit active electric filter device;
Fig. 3 is the circuit diagram of carrier wave filter circuit among Fig. 2.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3.Active Power Filter-APF M1, M2 ..., Mn is the different Active Power Filter-APF of n platform capacity.Active Power Filter-APF M1, M2 ..., the corresponding output of Mn and receiving on the electrical network, corresponding electric current, voltage sampling circuit input connect successively by platform, a shared cover sampling element.N is generally less than 10.3 IGBT modules also connect formation commutation inversion bridge 7, are the rectification inverter circuit of routine.Capacitor C 1 constitutes accumulator 8, is attempted by on the commutation inversion bridge 7.Carrier wave filter circuit 2 is made of with three groups of C mode filters 3 that are connected this inductance L 1～L6 node place that is connected in twos three groups of filter inductance L1～L6 that connect in twos, and these three groups of C mode filters 3 adopt triangle to connect, and also can adopt star to connect as required.Three groups of C mode filters 3 are made up of C2～C7, L7～L9, R1～R3.The outer end of inductance L 4, L5, L6 is connected with the mid point of commutation inversion bridge 7 arms respectively, and the outer end of inductance L 1, L2, L3 is connected with three phase network, and the outer end of inductance L 1, L2, L3 is an input, is again output.Control circuit is made of voltage, current detection circuit 1, digital signal processor DSP 4, man-machine interface 5 and drive circuit 6, wherein, digital signal processor DSP 4 only has one, be connected with voltage, current detection circuit 1, man-machine interface 5 and drive circuit 6 respectively, the control utmost point of the high-power switch tube S1～S6 in drive circuit 6 output and the commutation inversion bridge 7 is connected.Voltage, current detection circuit 1 comprise voltage sample circuit and current sampling circuit, are custom circuit.The utility model control circuit makes hardware configuration simple, and reliability increases.The carrier wave filter circuit makes the frequency band broad of whole device, and the first-harmonic loss is very little, and the fine filtering HF switch harmonic wave of energy makes output more level and smooth.Active filter M1, M2 ..., Mn also can be the identical active filter of capacity.
Claims (5)
1, a kind of can many parallel extended active electric filter devices, comprise many Active Power Filter-APFs, it is characterized in that: the corresponding output of these many Active Power Filter-APFs is also received on the electrical network, the input of corresponding electric current, voltage sampling circuit connects successively by platform, a shared cover sampling element.
2, according to claim 1 a kind of can many parallel extended active electric filter devices, it is characterized in that: described many Active Power Filter-APFs are the identical Active Power Filter-APFs of capacity.
3, according to claim 1 a kind of can many parallel extended active electric filter devices, it is characterized in that: described many Active Power Filter-APFs are capacity Active Power Filter-APFs inequality.
4, according to claim 1,2 or 3 described a kind of can many parallel extended active electric filter devices, it is characterized in that: the control circuit of described Active Power Filter-APF is made of electric current, voltage sampling circuit, single digital signal processor DSP, man-machine interface and drive circuit.
5, according to claim 1,2 or 3 described a kind of can many parallel extended active electric filter devices, it is characterized in that: the carrier wave filter circuit of described inverter circuit is to adopt star or triangle to connect by three filter branch that are made of C type filter circuit to constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200482157U CN2865106Y (en) | 2005-12-29 | 2005-12-29 | Powered electric filtering device capable of multiple parallel expanding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200482157U CN2865106Y (en) | 2005-12-29 | 2005-12-29 | Powered electric filtering device capable of multiple parallel expanding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2865106Y true CN2865106Y (en) | 2007-01-31 |
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ID=37677558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200482157U Expired - Lifetime CN2865106Y (en) | 2005-12-29 | 2005-12-29 | Powered electric filtering device capable of multiple parallel expanding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2865106Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102638043A (en) * | 2012-04-12 | 2012-08-15 | 浙江大学 | APF (Active Power Filter)parallel system and control method thereof |
| CN105322545A (en) * | 2015-11-27 | 2016-02-10 | 国网北京市电力公司 | Filtering system used for power grid |
| CN104600748B (en) * | 2015-02-04 | 2016-08-24 | 国家电网公司 | A kind of isolated island micro-capacitance sensor multi-inverter control system possessing active power filtering function and method of work thereof |
-
2005
- 2005-12-29 CN CNU2005200482157U patent/CN2865106Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102638043A (en) * | 2012-04-12 | 2012-08-15 | 浙江大学 | APF (Active Power Filter)parallel system and control method thereof |
| CN104600748B (en) * | 2015-02-04 | 2016-08-24 | 国家电网公司 | A kind of isolated island micro-capacitance sensor multi-inverter control system possessing active power filtering function and method of work thereof |
| CN105322545A (en) * | 2015-11-27 | 2016-02-10 | 国网北京市电力公司 | Filtering system used for power grid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070131 |
|
| EXPY | Termination of patent right or utility model | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhuiri Electrical Co., Ltd., Shanghai Document name: Notification of Expiration of Patent Right Duration |