CN204206005U - Amplitude modulation pressure regulation medium-high frequency interval current limiting power supplies - Google Patents
Amplitude modulation pressure regulation medium-high frequency interval current limiting power supplies Download PDFInfo
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- CN204206005U CN204206005U CN201420512094.6U CN201420512094U CN204206005U CN 204206005 U CN204206005 U CN 204206005U CN 201420512094 U CN201420512094 U CN 201420512094U CN 204206005 U CN204206005 U CN 204206005U
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Abstract
A kind of amplitude modulation pressure regulation medium-high frequency interval current limiting power supplies, it is by power-supply filter 1, controllable rectifier bridge 2, IGBT bridge-type inverter 3, controls drive circuit 4, pause switch 5, intermittent control circuit 6, capacitance 7, current-limiting inductance 8, step-up transformer 9, transformer 10, transformer secondary coil 11, rectification circuit 12, high voltage output terminal 13 forms.It is characterized in that the input of power-supply filter connects with three-phase alternating-current supply, the output of power-supply filter connects with controllable rectifier bridge, the output of controllable rectifier bridge connects with the input of IGBT bridge-type inverter, intermittent control circuit is connected with control drive circuit, IGBT bridge-type inverter is controlled by control drive circuit, the output of IGBT bridge-type inverter passes through capacitance, current-limiting inductance connects with the primary coil of step-up transformer, step-up transformer secondary coil is connected with rectification circuit, rectification circuit output end one end ground connection, another termination high voltage output terminal.
Description
Technical field
The present invention relates to a kind of power-supply device---amplitude modulation pressure regulation medium-high frequency interval current limiting power supplies
Background technology
Current high-voltage electrostatic dust separator adopts DC high-voltage power supply to power, and the trend of existing employing medium-high frequency power supply, working stability is reliable, energy-efficient is medium-high frequency power supply important indicator.
Summary of the invention
The object of the utility model amplitude modulation pressure regulation medium-high frequency interval current limiting power supplies proposes simple and easy, the reliable high energy-conservation medium-high frequency high voltage source of working stability of a kind of making.It is by power-supply filter, controllable rectifier bridge, IGBT bridge-type inverter, and control drive circuit, pause switch, intermittent control circuit, capacitance, current-limiting inductance, step-up transformer, primary coil, secondary coil, rectification circuit and high-pressure side are molecular.It is characterized in that the input of power-supply filter connects with three-phase alternating-current supply, the output of power-supply filter connects with controllable rectifier bridge, the output of controllable rectifier bridge connects with the input of IGBT bridge-type inverter, the output of IGBT bridge-type inverter is connected with the primary coil of step-up transformer by capacitance and current-limiting inductance, step-up transformer secondary coil is connected with rectification circuit, rectification circuit output end one end ground connection, another termination high voltage output terminal, intermittent control circuit controls to be connected with control drive circuit by pause switch, control drive circuit control IGBT bridge-type inverter.
Power-supply filter, controllable rectifier bridge, IGBT bridge-type inverter, step-up transformer, capacitance, current-limiting inductance and rectification circuit composition main circuit.
Three-phase main-frequency alternating current is through the adjustable direct voltage of controllable rectifier bridge rectification output amplitude, and direct voltage is through the inversion of IGBT bridge-type inverter, and being reverse into waveform is square wave pulse voltage, controls the frequency of drive circuit control impuls voltage.
Pulse voltage becomes high-voltage pulse after step-up transformer boosting, and export unidirectional pulsation high-voltage pulse through rectifier circuit rectifies, pulse amplitude is from 0-120kv continuously adjustabe, and output frequency is from 0-20KHz continuously adjustabe.When output short-circuit, current-limiting inductance defines short circuit current.
The amplitude adjusted of voltage is realized by controlled rectification circuit, the direct voltage of the exportable 0-500v of controlled rectification circuit, regulates the output voltage amplitude of controlled rectification, the intermediate frequency of just adjustable high-tension transformer output or high-frequency and high-voltage.
Closed pause switch, control drive circuit and control by intermittent control circuit, IGBT bridge-type inverter exports pulse square wave off and on, namely export a string square wave at set intervals, the time of interval is adjustable, and the time that square wave train continues is adjustable, within the time interval of interval, without High voltage output.
By pressure regulation amplitude modulation and adjustment intermittent time, the amplitude of output voltage and the power output of power supply can be controlled.
Accompanying drawing explanation
Accompanying drawing is amplitude modulation pressure regulation high frequency intermittent current limiting power supplies block diagram
In the accompanying drawings, 1 is power-supply filter, and 2 is controllable rectifier bridge, 3 is IGBT bridge-type inverter, and 4 for controlling drive circuit, and 5 is pause switch, 6 is intermittent control circuit, 7 is capacitance, and 8 is current-limiting inductance, 9 transformers, 10 is transformer, 11 is transformer secondary coil, and 12 is rectification circuit, and 13 is high voltage output terminal.
Embodiment
Embodiment 1 amplitude modulation pressure regulation high frequency intermittent current limiting power supplies
Amplitude modulation pressure regulation high frequency intermittent current limiting power supplies as shown in drawings, the input of power-supply filter 1 connects with three-phase alternating-current supply, the output of power-supply filter connects with controllable rectifier bridge 2, the output of controllable rectifier bridge connects with the input of IGBT bridge-type inverter 3, intermittent control circuit 6 is connected with control drive circuit 4, the output of IGBT bridge-type inverter is by capacitance 7, current-limiting inductance 8 connects with the primary coil 10 of step-up transformer 9, step-up transformer secondary coil 11 is connected with rectification circuit 12, output one end ground connection of rectification circuit, another termination high voltage output terminal 13, intermittent control circuit controls to be connected with control drive circuit by pause switch, control drive circuit control IGBT bridge-type inverter.
Make high-frequency and high-voltage power supply, frequency elects 10KHz--20KHz as, and high frequency transformer elected as by transformer.Output voltage is designed to 0-100KV continuously adjustabe, and maximum output current is 1A.
Intermittent time is 0-2 continuously adjustabe second.High-frequency pulse string duration settings is 2-10 continuously adjustabe second.After boosting rectification, export interval high direct voltage.
When disconnecting pause switch, high-frequency pulse string exports continuously.After boosting rectification, export Constant Direct Current high pressure.
Embodiment 2, amplitude modulation pressure regulation intermediate frequency interval current limiting power supplies
As shown in drawings, its circuit structure is identical with embodiment 1, and just parameter is different from embodiment 1 for amplitude modulation pressure regulation intermediate frequency interval current limiting power supplies.
Make medium-frequency high-voltage power supply, frequency elects 400Hz-1000Hz as, and intermediate frequency high frequency transformer elected as by transformer, and output voltage is designed to 0-100KV continuously adjustabe, maximum output current is the 2A. intermittent time is 1-2 second, and medium-frequency pulse string duration settings is 2-10 continuously adjustabe second.
When disconnecting pause switch, medium-frequency pulse series winding is continuous to be exported.After boosting rectification, export Constant Direct Current high pressure.
Claims (1)
1. an amplitude modulation pressure regulation medium-high frequency interval current limiting power supplies, it is by power-supply filter (1), controllable rectifier bridge (2), IGBT bridge-type inverter (3), control drive circuit (4), pause switch (5), intermittent control circuit (6), capacitance (7), current-limiting inductance (8), step-up transformer (9), transformer (10), transformer secondary coil (11), rectification circuit (12), high voltage output terminal (13) forms, it is characterized in that the input of power-supply filter (1) connects with three-phase alternating-current supply, the output of power-supply filter connects with controllable rectifier bridge (2), the output of controllable rectifier bridge connects with the input of IGBT bridge-type inverter (3), intermittent control circuit (6) is connected with control drive circuit (4), IGBT bridge-type inverter (3) is controlled by control drive circuit, the output of IGBT bridge-type inverter is by capacitance (7), current-limiting inductance (8) connects with the primary coil (10) of step-up transformer (9), step-up transformer secondary coil (11) is connected with rectification circuit (12), rectification circuit output end one end ground connection, another termination high voltage output terminal (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420512094.6U CN204206005U (en) | 2014-08-30 | 2014-08-30 | Amplitude modulation pressure regulation medium-high frequency interval current limiting power supplies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420512094.6U CN204206005U (en) | 2014-08-30 | 2014-08-30 | Amplitude modulation pressure regulation medium-high frequency interval current limiting power supplies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204206005U true CN204206005U (en) | 2015-03-11 |
Family
ID=52663916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420512094.6U Expired - Fee Related CN204206005U (en) | 2014-08-30 | 2014-08-30 | Amplitude modulation pressure regulation medium-high frequency interval current limiting power supplies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204206005U (en) |
-
2014
- 2014-08-30 CN CN201420512094.6U patent/CN204206005U/en not_active Expired - Fee Related
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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: 20150311 Termination date: 20160830 |