CN2579075Y - IGCT driving power supply - Google Patents
IGCT driving power supply Download PDFInfo
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- CN2579075Y CN2579075Y CN 02277379 CN02277379U CN2579075Y CN 2579075 Y CN2579075 Y CN 2579075Y CN 02277379 CN02277379 CN 02277379 CN 02277379 U CN02277379 U CN 02277379U CN 2579075 Y CN2579075 Y CN 2579075Y
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Abstract
The utility model relates to an IGCT driving power supply, which comprises an MOSFET power switch device, a transformer, a PWM control circuit, a magnetic saturation amplifying circuit, a low voltage drop linear amplifier, a gate signal and power supply fault synthesis circuit, an optical fiber sender, etc. The voltage regulation of the IGCT driving power supply is not fed back to an input end from an output end, but is carried out by the magnetic saturation amplifying circuit connected to an output end of the transformer, and the low voltage drop linear amplifier. Thus, the cost enhancement of the whole power supply caused by high voltage resistance between an input and the output ends of the transformer is avoided; simultaneously, the reliability of the power supply is enhanced. In addition, the utility model can emit a fault signal when a fault appears, and can cause a protection circuit to rapidly turn off IGCTs connected in series to avoid two IGCTs from being simultaneously damaged.
Description
Technical field
The utility model relates to a kind of dc transformating power, is meant a kind of IGCT driving power especially.
Background technology
IGCT is the large power semiconductor device of new generation that forms from GTO device development, because its operating voltage height, electric current are big, and stability has better begun to be applied in fields such as large power power electronic appliances.Because IGCT generally is applied in the high-vol, therefore very high to the requirement of withstand voltage between the former secondary of its driving power, the general requirement reaches more than the 15kV, and this makes the feedback of output voltage become difficult.In addition, when the IGCT series operation, can send fault-signal when also requiring the driving power fault, just make protective circuit can turn-off the IGCT of series connection rapidly, avoid damaging simultaneously two IGCT.The driving power of IGCT all is from external import at present, its complex structure, price height, difficult in maintenance.
The utility model content
The purpose of this utility model is to provide a kind of simple in structure, withstand voltage height of the former secondary of power supply, reliable and stable IGCT driving power, to overcome existing IGCT driving power complex structure, price height, shortcoming difficult in maintenance.
For achieving the above object, the technical scheme taked of the utility model is: the utility model comprises:
Switching device is imported winding with first of transformer and is linked, and is used to control the connecting and disconnecting of power supply input circuit;
Transformer includes the first input winding, the first output winding, and the described first input winding links with input power positive end, switching device respectively, is used to realize the isolation of power input and output;
Voltage stabilizing circuit is used for that input voltage is carried out voltage stabilizing and supplies with pwm control circuit;
Pwm control circuit links with the control end of switching device, is used for the break-make of control switch device;
The first magnetic saturation amplifying circuit is used for the rectification output of the control transformer first output winding, obtains a comparatively galvanic current pressure;
The first low-voltage drop linear amplifier is used for the output voltage of magnetic saturation amplifying circuit is carried out the voltage stabilizing second time, so that the output of first via DC power supply to be provided.
Above-mentioned IGCT driving power also comprises the second output winding, is used to provide the second road out-put supply;
The second magnetic saturation amplifying circuit is used for the rectification output of the control transformer second output winding, obtains a comparatively galvanic current pressure; And
The second low-voltage drop linear amplifier is used for the output voltage of magnetic saturation amplifying circuit is carried out the voltage stabilizing second time, so that the output of the second road power supply to be provided.
Above-mentioned IGCT driving power, also comprise DC power supply input soft-start circuit, described DC power supply input soft-start circuit comprises a current-limiting resistance, a power MOSFET tube, a MOSFET gate electrode resistance, a MOSFET gate pole electric capacity and a MOSFET gate pole voltage-stabiliser tube are formed, MOSFET gate electrode resistance one termination input DC power positive pole, one termination MOSFET gate pole, MOSFET gate pole electric capacity and gate pole voltage-stabiliser tube are connected in parallel, the negative electrode of voltage-stabiliser tube connects the MOSFET gate pole, the anode of voltage-stabiliser tube connects the input DC power negative pole, the MOSFET drain-source utmost point and current-limiting resistance are connected in parallel, and the MOSFET drain electrode connects the input filter condenser negative pole, and the MOSFET source electrode connects the input DC power negative pole.
Above-mentioned IGCT driving power, also comprise auxiliary degausser, be composed in series that the negative electrode of diode is received the input DC power positive pole by degaussing winding and a fast recovery diode of transformer, anode and transformer degaussing winding join, and the other end of degaussing winding and filter capacitor negative pole join.
Above-mentioned IGCT driving power, its every road dc output end also is connected to gate signal and power failure synthetic circuit, and the fiber optic transmitter that is connected on its output, gate signal and power failure synthetic circuit are sent by fiber optic transmitter after with IGCT gate pulse and power supply output overvoltage and undervoltage warning signal synthesis, when the IGCT gate pulse is off state, optical fiber sends light signal, when the IGCT gate pulse is that opening state or power supply output overvoltage or power supply are exported when under-voltage, optical fiber does not send light signal.
Voltage stabilizing in the utility model is not the input that feeds back to power supply from output, improves the reliability of power supply with regard to having avoided simultaneously because of the high withstand voltage cost of whole power supply that makes between transformer input, the output improves greatly so yet.In addition, can send fault-signal when the utility model breaks down, make protective circuit can turn-off the IGCT of series connection rapidly, avoid damaging simultaneously two IGCT.Secondly, the IGCT gate signal is also turned back to protective circuit, can be used for the quality of quick diagnosis IGCT in service.
Below in conjunction with accompanying drawing structure of the present utility model and operation principle are further described.
Description of drawings
Accompanying drawing 1 is a circuit diagram of the present utility model.
Embodiment
Referring to Fig. 1, the utility model converts one road input DC power two-way DC power supply of isolation to, supplies with two IGCT simultaneously and uses.
DC+/DC-is the DC power supply input, and R1, C1, Z1, M1, RS form the input soft-start circuit.Not conducting of M1 when just powering up, the charging current of RS limiting capacitance E1.When C1 is charged to Z1 voltage stabilizing value by R1 after, the M1 conducting, RS is by bypass.
DC/DC converter using single-end ortho-exciting translation circuit, the gate-drive of power switch pipe M2 is driven by the pwm pulse that pwm control circuit produces, and the control power supply of pwm control circuit by input DC power through voltage stabilizing circuit forms+the 12V/COM supply.The auxiliary winding L 3 of the degaussing of isolating transformer T forms degausser with diode D1, prevents that the former limit winding of transformer T when M2 turn-offs from producing overvoltage.Voltage-stabiliser tube Z2 restriction M2 gate voltage peak value.
Owing to require the withstand voltage 15KV of being not less than, 50Hz to exchange 1 minute between the input of transformer, the output winding, so the voltage stabilizing of output voltage is not to be undertaken by feeding back to input winding PWM control, but carries out exporting winding.Output winding two-way is isolated+the 20V/3A DC power supply, and isolation voltage exchanges 1 minute greater than 5KV, 50Hz between two-way.Every road output winding power supply output is made up of a regulex and a low-voltage drop linear amplifier.Being output as example with the 1 the tunnel below is illustrated.
The 1 road magnetic amplifying circuit is made up of pulsactor L1, rectifier diode D2/D4, filter inductance L3, filter capacitor E2 and magnetic saturation control circuit R8, R10, Z3, R12, P3, R14, D6.When E2 goes up direct voltage and reaches the magnitude of voltage of setting, Z3 and P3 conducting, direct voltage is added on the L1 through R14, and the backing field intensity of control L1, thereby the inductance value of control L1 reach and stablize the upward purpose of voltage of E2.Second level voltage stabilizing circuit is made up of R16, P1, control chip UC3833 and auxiliary circuit thereof for low pressure reduction voltage stabilizing circuit, and it carries out the voltage on the E2 to export after the voltage stabilizing once more, finishes the output overcurrent protection simultaneously, and output current is measured by R16.R20 and R22 feedback output voltage, E4 carries out filtering to output voltage.Excess voltage protection is finished the output over-voltage protection.
Every road output power supply circuit also comprises a gate signal and power failure synthetic circuit, it sends out by optical fiber after with IGCT gate pulse and power supply output overvoltage and undervoltage warning signal synthesis: when the IGCT gate pulse was off state, optical fiber sent light signal; When the IGCT gate pulse is that opening state or power supply output overvoltage or power supply are exported when under-voltage, optical fiber does not send light signal.This signal that returns can be used in by the user and carry out the IGCT protection.
Among the figure, UG1 is from the gate pole of the 1st IGCT, and UK1 is from the negative electrode of the 1st IGCT; UG2 is from the gate pole of the 2nd IGCT, and UK2 is from the negative electrode of the 2nd IGCT.
Claims (9)
1, a kind of IGCT driving power is characterized in that, comprising:
Switching device is imported winding with first of transformer and is linked, and is used to control the connecting and disconnecting of input circuit;
Transformer includes the first input winding, the first output winding, and the described first input winding links with input power positive end, switching device respectively, is used to realize the isolation of power input and output;
Voltage stabilizing circuit is used for that input voltage is carried out voltage stabilizing and supplies with pwm control circuit;
Pwm control circuit links with the control end of switching device, is used for the break-make of control switch device;
The first magnetic saturation amplifying circuit is used for the rectification output of the control transformer first output winding, obtains a comparatively galvanic current pressure;
The first low-voltage drop linear amplifier is used for the output voltage of magnetic saturation amplifying circuit is carried out the voltage stabilizing second time, so that first via dc output power to be provided.
2, IGCT driving power according to claim 1 is characterized in that: described transformer also comprises the second output winding, is used to provide the second road out-put supply;
The second magnetic saturation amplifying circuit is used for the rectification output of the control transformer second output winding, obtains a comparatively galvanic current pressure; And
The second low-voltage drop linear amplifier is used for the output voltage of magnetic saturation amplifying circuit is carried out the voltage stabilizing second time, so that the second road dc output power to be provided.
3, IGCT driving power according to claim 1 and 2, it is characterized in that: also comprise DC power supply input soft-start circuit, described DC power supply input soft-start circuit comprises a current-limiting resistance, a power MOSFET tube, a MOSFET gate electrode resistance, a MOSFET gate pole electric capacity and a MOSFET gate pole voltage-stabiliser tube are formed, MOSFET gate electrode resistance one termination input DC power positive pole, one termination MOSFET gate pole, MOSFET gate pole electric capacity and gate pole voltage-stabiliser tube are connected in parallel, the negative electrode of voltage-stabiliser tube connects the MOSFET gate pole, the anode of voltage-stabiliser tube connects the input DC power negative pole, the MOSFET drain-source utmost point and current-limiting resistance are connected in parallel, and the MOSFET drain electrode connects the input filter condenser negative pole, and the MOSFET source electrode connects the input DC power negative pole.
4, according to claim 1 or 2 or 3 described IGCT driving powers, it is characterized in that: described transformer also comprises the degaussing winding, degaussing winding and a fast recovery diode are composed in series auxiliary degausser, the negative electrode of diode is received the input DC power positive pole, anode and transformer degaussing winding join, and the other end of degaussing winding and filter capacitor negative pole join.
5, IGCT driving power according to claim 1 and 2, it is characterized in that: described first or second regulex is by a pulsactor, two halfwave rectifier diodes, a filter inductance, a filter capacitor and a regulex control circuit are formed.
6, IGCT driving power according to claim 5 is characterized in that: described regulex control circuit is by two direct voltage sample resistances, a three-port variable voltage regulator, and a power P NP triode, a diode and a resistance are formed.
7, IGCT driving power according to claim 1 is characterized in that: described switching device is the MOSFET power switch pipe.
8, IGCT driving power according to claim 1 and 2, it is characterized in that: the described first low-voltage drop linear amplifier and the second low-voltage drop linear amplifier are by a PNP pliotron, an output current measuring resistance, a low-voltage drop linear amplifies control chip and auxiliary circuit composition thereof.
9, IGCT driving power according to claim 1 and 2, it is characterized in that: every road dc output end also is connected to gate signal and power failure synthetic circuit, and the fiber optic transmitter that is connected on its output, gate signal and power failure synthetic circuit are sent by fiber optic transmitter after with IGCT gate pulse and power supply output overvoltage and undervoltage warning signal synthesis, when the IGCT gate pulse is off state, optical fiber sends light signal, when the IGCT gate pulse is that opening state or power supply output overvoltage or power supply are exported when under-voltage, optical fiber does not send light signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02277379 CN2579075Y (en) | 2002-09-30 | 2002-09-30 | IGCT driving power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02277379 CN2579075Y (en) | 2002-09-30 | 2002-09-30 | IGCT driving power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2579075Y true CN2579075Y (en) | 2003-10-08 |
Family
ID=33741002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02277379 Expired - Fee Related CN2579075Y (en) | 2002-09-30 | 2002-09-30 | IGCT driving power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2579075Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322659C (en) * | 2004-07-16 | 2007-06-20 | 中国科学院上海光学精密机械研究所 | Low-power semiconductor laser driving power supply |
| CN100414525C (en) * | 2003-08-29 | 2008-08-27 | 英飞凌科技股份公司 | Circuit system and method for coupling a circuit module to or for decoupling same from a main bus |
| WO2011026381A1 (en) * | 2009-09-02 | 2011-03-10 | 中兴通讯股份有限公司 | Soft-start circuit for power supply |
| CN102377208A (en) * | 2010-09-26 | 2012-03-14 | 深圳市英威腾电源有限公司 | Modularized uninterruptable power supply and cold starting method |
| CN104348372A (en) * | 2013-09-29 | 2015-02-11 | 深圳市伟创电气有限公司 | Auxiliary power supply circuit for forward switch power supply |
| CN104848699A (en) * | 2015-05-15 | 2015-08-19 | 成都中冶节能环保工程有限公司 | Warning type coke oven waste heat recovery power generation system based on boosting power supply circuit |
| CN108092491A (en) * | 2018-01-02 | 2018-05-29 | 清华大学 | Electric power management circuit applied to GCT device gate-drives |
-
2002
- 2002-09-30 CN CN 02277379 patent/CN2579075Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414525C (en) * | 2003-08-29 | 2008-08-27 | 英飞凌科技股份公司 | Circuit system and method for coupling a circuit module to or for decoupling same from a main bus |
| CN1322659C (en) * | 2004-07-16 | 2007-06-20 | 中国科学院上海光学精密机械研究所 | Low-power semiconductor laser driving power supply |
| WO2011026381A1 (en) * | 2009-09-02 | 2011-03-10 | 中兴通讯股份有限公司 | Soft-start circuit for power supply |
| CN102377208A (en) * | 2010-09-26 | 2012-03-14 | 深圳市英威腾电源有限公司 | Modularized uninterruptable power supply and cold starting method |
| CN102377208B (en) * | 2010-09-26 | 2014-09-17 | 深圳市英威腾电源有限公司 | Modularized uninterruptable power supply and cold starting method |
| CN104348372A (en) * | 2013-09-29 | 2015-02-11 | 深圳市伟创电气有限公司 | Auxiliary power supply circuit for forward switch power supply |
| CN104848699A (en) * | 2015-05-15 | 2015-08-19 | 成都中冶节能环保工程有限公司 | Warning type coke oven waste heat recovery power generation system based on boosting power supply circuit |
| CN108092491A (en) * | 2018-01-02 | 2018-05-29 | 清华大学 | Electric power management circuit applied to GCT device gate-drives |
| CN108092491B (en) * | 2018-01-02 | 2024-03-12 | 清华大学 | Power management circuit applied to GCT device gate electrode drive |
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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 |