CN2574277Y - Self-feed integral power system filter device - Google Patents
Self-feed integral power system filter device Download PDFInfo
- Publication number
- CN2574277Y CN2574277Y CN 02279408 CN02279408U CN2574277Y CN 2574277 Y CN2574277 Y CN 2574277Y CN 02279408 CN02279408 CN 02279408 CN 02279408 U CN02279408 U CN 02279408U CN 2574277 Y CN2574277 Y CN 2574277Y
- Authority
- CN
- China
- Prior art keywords
- utility
- model
- tuning filter
- single tuning
- harmonic wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model relates to a self-feed integral electrical power system filtering device, which belongs to the technical field of electrical power harmonic wave filters. The utility model mainly solves the problems that a single tuning filter still has impedance to a harmonic wave component, and the filtering effect of the single tuning filter is bad; the selection of the parameter of the single tuning filter is difficult, and the resonance of an electrical network is easily generated. The utility model has the technical proposal that the utility model comprises an LC single tuning filter circuit which is arranged between the electrical network and a load, a transformer is connected between the electrical network and the LC single tuning filter circuit, and a primary winding and a secondary winding of the transformer are connected in series. The utility model has the characteristics that the utility model has low impedance to a fundamental wave, the impedance is approximately zero, the filtering device has high impedance to a harmonic wave, thereby, the harmonic wave component can not pass, and the filtering effect of the utility model is better. The selection of the parameter of the single tuning filter is not difficult any more, and the problem that improper parameter selection results in the resonance of the electrical network is avoided. The utility model is mainly used for harmonic wave suppression filtering of a non-linear load of an electrical power system.
Description
Technical field
The utility model belongs to electric harmonic wave filter technology field.
Background technology
The existing power harmonic filter mostly adopts single tuned filter.Single tuned filter is in series by L, C, is connected in parallel between electrical network and the load.Its weak point one is that single tuned filter still has impedance to harmonic components, and the electrical network internal impedance is very little, thereby still has 20% harmonic components to scurry into electric power system, and filter effect is bad; The 2nd, load is the nonlinear change load often, thereby causes the single tuned filter parameter to select difficulty; The 3rd, selected not at that time when parameter, make electrical network generation resonance easily.
Goal of the invention
The purpose of this utility model is exactly that a kind of simple in structure, effective self-feeding type integrated power system filter of inhibition harmonic wave is provided at above-mentioned weak point.
Technical solution of the present utility model is: a kind of self-feeding type integrated power system filter, comprise the LC single tuning filter circuit that is connected in parallel between electrical network and the load, it is characterized in that: between electrical network and LC single tuning filter circuit, be connected with transformer, this transformer former limit winding and secondary windings in series.
The utility model is because on the basis of existing single tuned filter, tietransformer between LC single tuning filter circuit and electrical network, this transformer former limit winding and secondary winding serial connection, this transformer is Low ESR to first-harmonic, be approximately zero, harmonic wave be high impedance, thereby make harmonic component to pass through, be blocked on the single tuner loop, filter effect is better.Simultaneously,, also make the single tuned filter parameter select no longer difficulty, also avoided selecting the improper problem that causes electrical network generation resonance because of parameter because transformer presents high impedance.The harmonic wave that the utility model is mainly used in the electric power system nonlinear load suppresses filtering.
Description of drawings
Accompanying drawing is a circuit diagram of the present utility model.
Embodiment
As shown in the figure.Single tuned filter can be divided into according to the harmonic component situation, by two LC single tuning filter circuit L
1, C
1, L
2, C
2Form or form, be connected in parallel on the load input terminal between electrical network and the load, be prior art circuits by many single tuning filter circuits.Transformer T is connected in LC single tuning filter circuit L
1, C
1, L
2, C
2And between the electrical network 1.Transformer T former limit winding and secondary winding serial connection, transformer T is Low ESR to first-harmonic, is approximately zero, harmonic wave is high impedance, thereby makes harmonic component to pass through, and is blocked on the single tuner loop, and filter effect is better.When load 2 was the nonlinear change load, its variation made the single tuned filter parameter no longer suitable, and transformer T presents high impedance equally, had harmonic wave inhibitory action preferably.
Claims (1)
1, a kind of self-feeding type integrated power system filter comprises the LC single tuning filter circuit (L that is connected in parallel between electrical network 1 and the load 2
1, C
1, L
2, C
2), it is characterized in that: at electrical network 1 and LC single tuning filter circuit (L
1, C
1, L
2, C
2) between be connected with transformer (T), this transformer (T) former limit winding and secondary windings in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02279408 CN2574277Y (en) | 2002-09-28 | 2002-09-28 | Self-feed integral power system filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02279408 CN2574277Y (en) | 2002-09-28 | 2002-09-28 | Self-feed integral power system filter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2574277Y true CN2574277Y (en) | 2003-09-17 |
Family
ID=33742479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02279408 Expired - Fee Related CN2574277Y (en) | 2002-09-28 | 2002-09-28 | Self-feed integral power system filter device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2574277Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101820260A (en) * | 2010-04-27 | 2010-09-01 | 中国计量科学研究院 | Waveform purifier and waveform purifying method |
-
2002
- 2002-09-28 CN CN 02279408 patent/CN2574277Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101820260A (en) * | 2010-04-27 | 2010-09-01 | 中国计量科学研究院 | Waveform purifier and waveform purifying method |
| CN101820260B (en) * | 2010-04-27 | 2014-02-19 | 中国计量科学研究院 | Waveform purifier and waveform purifying method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101083397A (en) | Series-parallel isolation passive power filter | |
| WO2017112237A1 (en) | Multi-harmonic matching networks | |
| CN103746381A (en) | Hybrid passive power filter | |
| CN200944530Y (en) | Power filter | |
| CN205566240U (en) | Multi -level filter | |
| CN202218200U (en) | Filter circuit | |
| CN2574277Y (en) | Self-feed integral power system filter device | |
| CN110729978A (en) | High-frequency common mode rejection circuit and electrical apparatus | |
| CN107800199A (en) | A kind of electromagnetic interference suppression circuit and electric energy transmitting terminal | |
| CN210867493U (en) | Multistage harmonic filter of shipborne electric equipment | |
| CN109148130A (en) | It is a kind of based on parity-time symmetry principle iron-free core transformer | |
| RU2466494C1 (en) | Narrow-band tunable lc-filter | |
| CN210669883U (en) | Filter for filtering noise and interference signal | |
| CN204290903U (en) | The filter circuit that belt switch exports | |
| CN112670064A (en) | Energy-saving filtering type power transformer | |
| CN103236700B (en) | Device for reducing harmonic waves of saturable reactor | |
| CN105680898A (en) | Circuit for perfecting performance of mobile terminal | |
| CN201374641Y (en) | Anti-electromagnetic interference circuit structure of large-screen liquid crystal television | |
| CN110336542A (en) | A kind of low-frequency range filter, electrical equipment and its low-frequency range filtering method | |
| CN2641885Y (en) | Self-adaptive harmonic comprehensive suppressor | |
| CN204559128U (en) | The fast bandpass filter of a kind of micro-resistance | |
| CN217037045U (en) | High-power supply filter | |
| CN204834806U (en) | Medium band stop notch filter | |
| CN220857914U (en) | Driving circuit with filtering function | |
| CN202797974U (en) | Power grid filter circuit structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |