CN202353450U - Active filter compensation capacitor charging device - Google Patents
Active filter compensation capacitor charging device Download PDFInfo
- Publication number
- CN202353450U CN202353450U CN2011205063422U CN201120506342U CN202353450U CN 202353450 U CN202353450 U CN 202353450U CN 2011205063422 U CN2011205063422 U CN 2011205063422U CN 201120506342 U CN201120506342 U CN 201120506342U CN 202353450 U CN202353450 U CN 202353450U
- Authority
- CN
- China
- Prior art keywords
- unit
- charging device
- phase line
- phase
- current
- 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
Images
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model discloses an active filter compensation capacitor charging device. The active filter compensation capacitor charging device comprises a three-phase power supply, a high-frequency filtering unit, a direct current electrolytic capacitor, a rectifier unit, a first switching unit and a current limiting unit, wherein the high-frequency filtering unit is used for filtering the three-phase power supply; the first switching unit is used for controlling the connection and disconnection of the three-phase power supply and the high-frequency filtering unit; the current limiting unit is used for limiting the value of the current flowing through the rectifier unit; the three-phase power supply comprises a first phase line, a second phase line and a third phase line; the first phase line passes through the current limiting unit and the rectifier unit in turn and is electrically connected with the second phase line; the first phase line, the second phase line and the third phase line are electrically connected with the high-frequency filtering unit through the first switching unit; and the direct current electrolytic capacitor receives the direct current converted by the rectifier unit. According to the active filter compensation capacitor charging device, a charging circuit and the high-frequency filtering circuit are completely isolated, so that the damage to current limiting resistors is reduced and the reliability of equipment is increased when an active filter goes wrong.
Description
Technical field
The utility model relates to a kind of electric capacity charging device, particularly relates to a kind of electric capacity charging device that is used for the active power filtering compensation arrangement.
Background technology
The fly-wheel diode that at present domestic and international active filter and inverter adopt IGBT (insulated gate bipolar transistor) device for high-power power electronic to carry more is directly given the electrochemical capacitor charging of DC side; As shown in Figure 1; When needs charge to electrochemical capacitor; Switch 3 is opened; Because it is conducting with B closure or openness and said C mutually mutually mutually all the time that switch is only controlled the A of said three-phase alternating-current supply 1; So this moment three phase mains 1 A phase, B mutually and the A of C in mutually constitute a charge circuit mutually with the C of current-limiting resistance 5, inverter 6, electrochemical capacitor 4 and three phase mains 1, thereby charge through A phase and the said relatively electrochemical capacitor of C in the said three phase mains 1.When charging is accomplished, said switch 3 closures, thus make the said current-limiting resistance 5 of short circuit, thus can carry out follow-up equipment or device provides power supply.
But because IGBT power switch pipe switching frequency is mostly at 5KH-20KH, the switch ripple that therefore must the filtering HF switch brings.Just to increase High frequency filter unit 2.Because the C in the three phase mains 1 is conducting all the time mutually; So A also forms a closed-loop path mutually through current-limiting resistance 5, High frequency filter unit 2 and C; So when the active filter fault; Because switch 3 is in opening, so the electric current between said charge circuit and High frequency filter unit 2 makes that thereby the in running order for a long time temperature that causes current-limiting resistance 5 of current-limiting resistance 5 can very high and damage, so influence equipment dependability and stability.
The utility model content
The technical problem that the utility model will solve is when overcoming the active filter fault of prior art; Current-limiting resistance works long hours and causes the defective of current-limiting resistance damage in the electrochemical capacitor charging circuit; The electric capacity charging device that a kind of active filter is provided is through isolate charge circuit and High frequency filter loop fully; Thereby when the active filter fault, said current-limiting resistance is no longer in running order, has reduced the damage of current-limiting resistance.
The utility model solves above-mentioned technical problem through following technical proposals:
The utility model provides a kind of active power filtering building-out capacitor charging device; Comprise a three phase mains, be used for a High frequency filter unit and a direct current electrochemical capacitor of the HF switch ripple of the said three phase mains of filtering, be characterized in that said active power filtering building-out capacitor charging device also comprises: be used for alternating current is converted into a galvanic rectification unit; One first switch element that is used to control break-make between said three phase mains and the said High frequency filter unit be used to limit the current limliting unit of current value of said rectification unit of flowing through;
Wherein said three phase mains comprises one first phase line, one second phase line and a third phase line, and said first phase line is electrically connected with said second phase line through said current limliting unit and said rectification unit successively; Said first phase line, second phase line and third phase line are electrically connected with said High frequency filter unit through said first switch element, and said dc electrolysis electric capacity receives said rectification unit and transforms the direct current that obtains.
Preferably, said active power filtering building-out capacitor charging device also comprises a second switch unit, and said second switch unit is used to control the break-make between said current limliting unit and the said rectification unit.
Preferably, said active power filtering building-out capacitor charging device also comprises one first fuse, and said first fuse is connected between said three phase mains and the High frequency filter unit.
Preferably, said active power filtering building-out capacitor charging device also comprises one second fuse, and said second fuse is connected between first phase line and said current limliting unit of said three phase mains.
Preferably, said rectification unit is a rectifier bridge.
Preferably, said current limliting unit is a current-limiting resistance.
The positive progressive effect of the utility model is:
The electric capacity charging device of the active filter of the utility model is through isolating charge circuit and High frequency filter loop fully, thereby when the active filter fault, said current-limiting resistance is no longer in running order, has reduced the damage of current-limiting resistance.Institute is so that said active filter more stable work and reliable.
Description of drawings
Fig. 1 is the structural representation of the capacitor charging circuit of active filter of the prior art.
Fig. 2 is the electrical block diagram of electric capacity charging device of the active filter of the utility model.
Embodiment
Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to specify the technical scheme of the utility model.
Embodiment:
As shown in Figure 2, comprise a three phase mains 1, a high frequency filter 2, switch 3 and switch 8, a direct current electrochemical capacitor 4, a current-limiting resistance 5, rectifier bridge 7, fuse 9 and fuse 10 in the electric capacity charging device of the active filter of present embodiment.
Wherein said three phase mains 1 comprises A phase, B phase and C mutually, and said A phase, B all are electrically connected with switch 3 through said fuse 9 with C mutually mutually.Said switch 3 is electrically connected with said high frequency filter 2, and said B also is electrically connected with said current-limiting resistance 5 through fuse 10 mutually, and said current-limiting resistance 5 also all is electrically connected with said rectifier bridge 7 through switch 8 with A mutually.Said rectifier bridge is electrically connected with said dc electrolysis electric capacity 4.
Three phase mains described in the present embodiment 1 is used to provide three-phase alternating current.Said high frequency filter 2 is used for the HF switch ripple of the three-phase alternating current of the said three phase mains 1 of filtering.Thereby can power supply be provided for follow-up equipment or device through the three-phase alternating current of filtering.
Said switch 3 is used to control the break-make between said three phase mains 1 and the high frequency filter 2; Wherein when said switch 3 is opened; Be not communicated with between said three phase mains 1 and the said high frequency filter 2; Thereby stop power supply being provided, otherwise said three phase mains 1 provides power supply through said high frequency filter 2 for follow-up equipment or device for follow-up equipment or device.
Said fuse 9 is used to prevent A phase, the B phase and C current overload mutually of three phase mains 1.Said fuse 10 is used to prevent the current overload through said current-limiting resistance 5.
Said rectifier bridge 7 is used for the A of the said three phase mains 1 of flowing through is converted into direct current with B electric current mutually mutually, and input is stored in the said dc electrolysis electric capacity 4.
Said switch 8 is used to control said B mutually with through the break-make of A with the said rectifier bridge of current-limiting resistance 5.When said switch 8 is opened, the A of said three phase mains 1 mutually and B stop mutually for dc electrolysis electric capacity 4 electric energy being provided through said rectifier bridge 7.
The operation principle of present embodiment is following:
When need not be for dc electrolysis electric capacity 4 charging, said switch 8 be opened, and the closed and said three phase mains 1 of said switch 3 this moment exports follow-up equipment or device to after through high frequency filter 2 filtering HF switch ripples.
When needs charge for dc electrolysis electric capacity 4; Said switch 8 closures; The B phase current of at this moment said switch 3 unlatchings and said three phase mains 1 is after the current limliting of current-limiting resistance 5; Be converted into direct current and input to said dc electrolysis electric capacity 4 through rectifier bridge 7, and the A of said three phase mains 1 is used for constituting the closed-loop path mutually with said B mutually, thereby realize charging dc electrolysis electric capacity.
So will separate with high frequency filter 2 with the charge circuit that current-limiting resistance 5 grades constitute by rectifier bridge 7 through switch 3 in the present embodiment; Thereby between said high frequency filter 2 and charge circuit, no longer there is the loop; Even thereby during the active filter fault; Said current-limiting resistance 5 is no longer in running order, has reduced the damage of current-limiting resistance.
Though more than described the embodiment of the utility model, it will be understood by those of skill in the art that these only illustrate, the protection range of the utility model is limited appended claims.Those skilled in the art can make numerous variations or modification to these execution modes under the prerequisite of principle that does not deviate from the utility model and essence, but these changes and modification all fall into the protection range of the utility model.
Claims (6)
1. active power filtering building-out capacitor charging device; Comprise a three phase mains, be used for a High frequency filter unit and a direct current electrochemical capacitor of the HF switch ripple of the said three phase mains of filtering; It is characterized in that said active power filtering building-out capacitor charging device also comprises: be used for alternating current is converted into a galvanic rectification unit; One first switch element that is used to control break-make between said three phase mains and the said High frequency filter unit be used to limit the current limliting unit of current value of said rectification unit of flowing through;
Wherein said three phase mains comprises one first phase line, one second phase line and a third phase line, and said first phase line is electrically connected with said second phase line through said current limliting unit and said rectification unit successively; Said first phase line, second phase line and third phase line are electrically connected with said High frequency filter unit through said first switch element, and said dc electrolysis electric capacity is used to receive said rectification unit and transforms the direct current that obtains.
2. active power filtering building-out capacitor charging device as claimed in claim 1; It is characterized in that; Said active power filtering building-out capacitor charging device also comprises a second switch unit, and said second switch unit is used to control the break-make between said current limliting unit and the said rectification unit.
3. active power filtering building-out capacitor charging device as claimed in claim 2 is characterized in that, said active power filtering building-out capacitor charging device also comprises one first fuse, and said first fuse is connected between said three phase mains and the High frequency filter unit.
4. like each described active power filtering building-out capacitor charging device among the claim 1-3; It is characterized in that; Said active power filtering building-out capacitor charging device also comprises one second fuse, and said second fuse is connected between first phase line and said current limliting unit of said three phase mains.
5. active power filtering building-out capacitor charging device as claimed in claim 4 is characterized in that said rectification unit is a rectifier bridge.
6. active power filtering building-out capacitor charging device as claimed in claim 5 is characterized in that said current limliting unit is a current-limiting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205063422U CN202353450U (en) | 2011-12-07 | 2011-12-07 | Active filter compensation capacitor charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205063422U CN202353450U (en) | 2011-12-07 | 2011-12-07 | Active filter compensation capacitor charging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202353450U true CN202353450U (en) | 2012-07-25 |
Family
ID=46542412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205063422U Expired - Fee Related CN202353450U (en) | 2011-12-07 | 2011-12-07 | Active filter compensation capacitor charging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202353450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106385073A (en) * | 2016-10-11 | 2017-02-08 | 上海灿瑞科技股份有限公司 | Compensation capacitor precharging circuit suitable for high power factor LED controller |
-
2011
- 2011-12-07 CN CN2011205063422U patent/CN202353450U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106385073A (en) * | 2016-10-11 | 2017-02-08 | 上海灿瑞科技股份有限公司 | Compensation capacitor precharging circuit suitable for high power factor LED controller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11088538B2 (en) | Module of suppressing inrush current, method of controlling the same and on-board bidirectional charger using the same | |
| CN204794705U (en) | Multiplexed output flyback converter of uninterrupted power supply | |
| CN101685975B (en) | Method and device of soft start of bus voltage in uninterruptible power supply | |
| CN104300777A (en) | Inverter synchronous grid connection method | |
| CN103683469B (en) | The control method that a kind of uninterrupted power supply input switches and equipment | |
| CN103427474B (en) | The control method of uninterrupted power supply(ups), uninterrupted power supply(ups) | |
| CN202435108U (en) | Charging cabinet | |
| CN108075562B (en) | High-power portable electric equipment and power supply control device and method thereof | |
| CN103199709A (en) | Double-switch flyback type power converter | |
| CN103227610B (en) | Circuit for controlling motor and automobile | |
| CN204205599U (en) | A kind of electronic type feeder line on-load voltage regulating device | |
| CN104935077B (en) | For the Anti-electricity dazzling device and its control method of series capacitance type A.C. contactor | |
| CN104734264A (en) | Online interactive uninterruptible power supply and control method thereof | |
| CN103746573A (en) | Rectification device | |
| CN203377777U (en) | A soft start circuit of an auxiliary power supply | |
| CN104362720A (en) | Storage battery charging system | |
| CN204216780U (en) | A kind of DC bus soft start circuit of uninterrupted power supply | |
| CN207559679U (en) | High-power portable electrical equipment and its power control | |
| CN103023135A (en) | Multi-level direct current transformation power supply device | |
| CN202712066U (en) | Power supply circuit of contactor coil | |
| CN202678975U (en) | Dynamic voltage compensator | |
| CN202353450U (en) | Active filter compensation capacitor charging device | |
| CN101707392B (en) | Alternating and direct current isolation control method of uninterruptible power supply and circuit | |
| CN204967289U (en) | Electric current mutual inductance of wide current range work is got can power | |
| CN204179938U (en) | The synchronous grid-connected system of a kind of inverter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20120725 Termination date: 20191207 |