CN202340192U - Variable-frequency power supply with monitoring function - Google Patents
Variable-frequency power supply with monitoring function Download PDFInfo
- Publication number
- CN202340192U CN202340192U CN2011204450466U CN201120445046U CN202340192U CN 202340192 U CN202340192 U CN 202340192U CN 2011204450466 U CN2011204450466 U CN 2011204450466U CN 201120445046 U CN201120445046 U CN 201120445046U CN 202340192 U CN202340192 U CN 202340192U
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- circuit
- power supply
- monitoring function
- inverter circuit
- frequency power
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- Expired - Fee Related
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- Power Conversion In General (AREA)
Abstract
The utility model relates to a variable-friable power supply with a monitoring function, which comprises a buffer circuit (1), a rectifier circuit (2) and an inverter circuit (3). Alternating current is output into the rectifier circuit (2) after passing through the inverter circuit (3), the alternating current is rectified into the direct current by the inverter circuit (3), and is then converted to alternating current by the inverter circuit (3) to be output, the power supply further comprises a control circuit (4), monitoring signals of the output end of the inverter circuit (3) are input to the control circuit (4) by a mutual inductor, and the control circuit (4) is connected with an control end of an IGBT (insulated gate bipolar transistor) chip constituting the inverter circuit (3). The power supply output by the variable-friable power supply provided by the utility model is stable.
Description
Technical field
The utility model relates to a kind of power supply, especially relates to a kind of variable frequency power supply that has monitoring function.
Background technology
Power supply is one of requisite accessory of industrial equipment, could produce electric current, the voltage of the proper frequency of supply equipment use after the common power supply need frequency conversion; Conventional power supply is linked to each other with inverter circuit by buffer circuit, rectification circuit successively and constitutes; It is simple in structure; But when output (filtering system breaks down), voltage, the frequency fluctuation of its output current are bigger, damage the load equipment that is attached thereto easily.Existing variable frequency power supply has detection, control to the inverter output terminal power quality, but can't detect and feedback filtered power quality.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned deficiency, provides a kind of out-put supply the stable variable frequency power supply that has monitoring function.
The purpose of the utility model is achieved in that a kind of variable frequency power supply that has monitoring function; Said power supply includes buffer circuit, rectification circuit and inverter circuit; Alternating current gets into rectification circuit behind buffer circuit; After rectification circuit is rectified into direct current, be alternating current output via the inverter circuit inversion again; Said power supply also includes control circuit, and with the monitor signal input control circuit, said control circuit links to each other with the control end of the igbt chip that constitutes inverter circuit the output of said inverter circuit through instrument transformer.
A kind of variable frequency power supply that has monitoring function of the utility model, said inverter circuit is made up of igbt chip, and parallel connection inserted the direct current input circuit after igbt chip was connected in twos, in twos the alternating current after the continuous contact output inversion in the middle of the igbt chip of series connection.
A kind of variable frequency power supply that has monitoring function of the utility model is connected with a contactor on the said control circuit, the contact series connection of said contactor inserts between the input of alternating current and buffer circuit.
A kind of variable frequency power supply that has monitoring function of the utility model, said buffer circuit is a transformer, said rectification circuit is a full bridge rectifier.
Compared with prior art, the beneficial effect of the utility model is:
The utility model installs control circuit additional to be monitored the output of whole power supply; Thereby when output current, voltage, when frequency has disturbance; Can be immediately through the regulation and control to IGBT realize exporting stable; And during than great fluctuation process, in time cut off the electricity supply, thereby protective effect has been played in load in the out-put supply quality.
Description of drawings
Fig. 1 has the circuit block diagram of the variable frequency power supply of monitoring function for the utility model.
Wherein:
Buffer circuit 1, rectification circuit 2, inverter circuit 3, control circuit 4, contactor KM1.
Embodiment
Referring to Fig. 1; A kind of variable frequency power supply that has monitoring function that the utility model relates to, said power supply includes buffer circuit 1, rectification circuit 2, inverter circuit 3 and control circuit 4, and alternating current gets into rectification circuit 2 behind buffer circuit 1; Said buffer circuit 1 is a transformer; Said rectification circuit 2 is a full bridge rectifier, after rectification circuit 2 is rectified into direct current, is alternating current output via inverter circuit 3 inversions again, and said inverter circuit 3 is made up of 6 igbt chips; Parallel connection inserted the direct current input circuit after igbt chip was connected in twos; The contact that links to each other in the middle of the igbt chip of series connection is in twos exported the alternating current after the inversion, and alternating current obtains satisfactory AC power (leading indicator has: voltage, frequency, waveform) again through filtering system filtering; The output of said inverter circuit 3 through instrument transformer with monitor signal input control circuit 4; Said control circuit 4 links to each other with the control end of the igbt chip that constitutes inverter circuit 3, is connected with a contactor KM1 on the said control circuit 4, and the contact series connection of said contactor KM1 inserts between the input of alternating current and buffer circuit 1.
During work; Control circuit 4 constantly obtains the out-put supply state of inverter circuit 3 through contactor; When disturbance or difference take place when, can realize adjusting through control to the igbt chip that constitutes inverter circuit 3 to out-put supply, supply load to use thereby make out-put supply to stablize; Simultaneously, contactor is installed after, when circuit occurs unusual or infringement needs when out of service, can close earlier again to go again on the basis of inverter circuit 3 igbt chips and close input power supply, safety and reliability.
Claims (5)
1. variable frequency power supply that has monitoring function; Said power supply includes buffer circuit (1), rectification circuit (2) and inverter circuit (3); Alternating current gets into rectification circuit (2) behind buffer circuit (1); After rectification circuit (2) is rectified into direct current, be alternating current output via inverter circuit (3) inversion again; It is characterized in that: said power supply also includes control circuit (4), and with monitor signal input control circuit (4), said control circuit (4) links to each other with the control end of the igbt chip that constitutes inverter circuit (3) output of said inverter circuit (3) through instrument transformer.
2. a kind of according to claim 1 variable frequency power supply that has monitoring function; It is characterized in that: said inverter circuit (3) is made up of igbt chip; Parallel connection inserted the direct current input circuit after igbt chip was connected in twos, in twos the alternating current after the continuous contact output inversion in the middle of the igbt chip of series connection.
3. a kind of according to claim 1 or claim 2 variable frequency power supply that has monitoring function; It is characterized in that: be connected with a contactor (KM1) on the said control circuit (4), the contact series connection of said contactor (KM1) inserts between the input of alternating current and buffer circuit (1).
4. a kind of according to claim 1 or claim 2 variable frequency power supply that has monitoring function is characterized in that: said buffer circuit (1) is a transformer, and said rectification circuit (2) is a full bridge rectifier.
5. like the said a kind of variable frequency power supply that has monitoring function of claim 3, it is characterized in that: said buffer circuit (1) is a transformer, and said rectification circuit (2) is a full bridge rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204450466U CN202340192U (en) | 2011-11-11 | 2011-11-11 | Variable-frequency power supply with monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204450466U CN202340192U (en) | 2011-11-11 | 2011-11-11 | Variable-frequency power supply with monitoring function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202340192U true CN202340192U (en) | 2012-07-18 |
Family
ID=46488879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204450466U Expired - Fee Related CN202340192U (en) | 2011-11-11 | 2011-11-11 | Variable-frequency power supply with monitoring function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202340192U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111086180A (en) * | 2019-12-10 | 2020-05-01 | 苏州安驰控制系统有限公司 | Heating control circuit and injection molding machine |
-
2011
- 2011-11-11 CN CN2011204450466U patent/CN202340192U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111086180A (en) * | 2019-12-10 | 2020-05-01 | 苏州安驰控制系统有限公司 | Heating control circuit and injection molding machine |
| CN111086180B (en) * | 2019-12-10 | 2021-12-17 | 苏州安驰控制系统有限公司 | Heating control circuit and injection molding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120718 Termination date: 20131111 |