CN207753615U - Electric power management circuit applied to GCT device gate-drives - Google Patents
Electric power management circuit applied to GCT device gate-drives Download PDFInfo
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- CN207753615U CN207753615U CN201820003158.8U CN201820003158U CN207753615U CN 207753615 U CN207753615 U CN 207753615U CN 201820003158 U CN201820003158 U CN 201820003158U CN 207753615 U CN207753615 U CN 207753615U
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Abstract
A kind of electric power management circuit applied to GCT device gate-drives, including the first power module, which are the shutdown module of GCT devices, open the modules such as module, monitoring and communication module is powered；Second power supply module is managed for the power supply in the electrifying startup and power process to GCT devices；Third power module, the stand-by power supply of the first power module for providing upper and lower adjacent level GCT devices carry out isolation power supply to adjacent GCT devices.This electric power management circuit meets the needs of GCT gate-drives unit directly takes electricity from GCT devices high-pressure side main circuit, without carrying out high_voltage isolation power supply to the gate-drive unit of GCT from low potential, greatly reduce device volume and cost, a variety of stand-by power supply modes are provided, reliability is improved.Increase power on, the power supply management strategy of power process, the voltage breakdown during effectivelying prevent.
Description
Technical field
The utility model belongs to technical field of electric power, is related to power electronic devices, more particularly to a kind of to be applied to GCT devices
The electric power management circuit of part gate-drive.
Background technology
Door pole stream-exchanging thyristor GCT (Gate Commutated Thyristor) device is as a kind of high power semi-conductor
Switching device has thyristor (SCR) and gate level turn-off thyristor (GTO) low pass concurrently using gate commutated turn-off technique as characteristic
The advantages that dynamic and static state turn-off performance that state pressure drop and IGBT stablize.
The existing gate-drive applied to GCT devices (such as IGCT, ETO), as shown in Figure 1, its circuit module mainly wraps
Include electric power management circuit module, open module, shutdown module, monitoring and communication module etc..Exist in the shutdown module of GCT devices
The recharged capacitance group of tens mF, in the off case, gate pole, the cathode of the capacitance group and GCT are connected in parallel, and make gate pole, the moon
Voltage across poles keeps reverse bias, to ensure that the anode of GCT, cathode can be resistant to specified DC voltage or transient voltage.
If gate pole, cathode voltage are unsatisfactory for certain reverse bias condition, then the withstanding voltage of GCT and voltage change ratio cannot
Reach rated insulation voltage value.Electric power management circuit is the tens mF capacitance groups for turning off module, opens module, monitoring and communication module etc.
It is powered.
The electrifying startup process of GCT gate-drives needs capacitance group charging to predetermined voltage threshold (such as 20V).Due to electricity
Power management circuits charge power is limited, and the existing typical gate-drive electrifying startup processes of GCT generally require 3-5 seconds.It is charging
It should ensure that GCT is off state in the process, and high voltage or voltage change ratio cannot be applied between anode, cathode, otherwise
GCT over-voltage breakdowns may be caused to damage.Therefore, it in the application of GCT, needs first to complete GCT gate-drive power up, then will
Apply high-voltage electricity between anode, cathode.Correspondingly, should can just disconnect after voltage drops to certain value between anode, cathode
GCT gate-drive power supplys.This also just determines that the gate-drive of GCT cannot be from directly taking electricity between anode, cathode, but needs
Using other electric power loops of low potential, high_voltage isolation power supply is carried out to GCT gate-drive units.
In addition, existing power supply manage circuit under conditions of, once external power supply break down, gate-drive will immediately without
Method works normally, and the system that GCT is applied is caused to break down.
The electric power management circuit of this gate-drive of the prior art seriously limits the application of GCT, especially in high pressure
Field is continuously improved the isolation voltage grade of GCT gate-drive units power supply, greatly increases with the raising of voltage class
The cost for having added device volume and power supply, reduces reliability.
Utility model content
The shortcomings and deficiencies for solving prior art, the utility model proposes a kind of gate pole drives applied to GCT devices
Dynamic Novel electric power management circuits.
Technical solution is as follows：
A kind of electric power management circuit applied to GCT device gate-drives connects external power supply, including：
First power module is the shutdown module of the GCT devices gate-drive, opens module and monitoring and communication module
It is powered；
Second power supply module, the first power module described in electric coupling, for the GCT devices electrifying startup and power-off
Power supply in the process is managed, and is carried out to first power module using the anode of the GCT devices, cathode voltage
Stand-by power supply；
The first and second power module electric coupling external power supply, the external power supply supply for first and second power module
Electricity.
Further comprise third power module, the first power module of the upper and lower adjacent level GCT devices of electric coupling, for carrying
For the stand-by power supply of the first power module of upper and lower adjacent level GCT devices, spare isolation is carried out to the adjacent GCT devices and is supplied
Electricity；Third power module described in the first power module electric coupling is powered for the third power module.
Wherein, the second power supply module, the capacitance for the breaking circuit module in the GCT devices power up is not
When completing charging, certain reverse bias voltage is provided between the gate poles of the GCT devices, cathode, or by the GCT devices
Gate pole, cathode short circuit.
Wherein, the second power supply module, the capacitance electricity for the breaking circuit module in the GCT devices power process
Press it is lower in the case of, provide certain reverse bias voltage between the gate poles of the GCT devices, cathode, or by the GCT devices
The gate pole of part, cathode short circuit.
Wherein, power in GCT devices, power off, in course of normal operation, utilized by the second power supply module described in
Anode, the cathode voltage of GCT devices are powered for first power module, are closed the external power supply, are reduced external power supply
Power supply.
Wherein, in the third power module exception of the external power supply abnormal electrical power supply and adjacent level GCT devices, described
Two power modules take electricity from the positive and negative voltage across poles of the GCT devices, are to open module, pass by first power module
Disconnected module is powered.
Wherein, in the external power supply abnormal electrical power supply and second power supply module exception, the of the adjacent level GCT devices
Three power modules are powered by first power module to open module, turning off module.
Reverse bias voltage threshold value is equal to or less than described the between gate pole that wherein second power supply module provides, cathode
The predetermined voltage threshold of one power module, and in the GCT devices power up, when the GCT device anodes, cathode voltage
When rising to low voltage, reverse bias voltage threshold value between the preset gate pole of second power supply module, cathode is charged to rapidly.Wherein
Reverse bias voltage between gate pole that the second power supply module provides, cathode, maintains anode, cathode until the GCT devices
Between voltage be down to security value (s) or less.
The wherein described second power supply module is in the GCT devices power up, when the GCT device anodes, cathode electricity
When pressure rises to low voltage, rapidly by gate pole, cathode short circuit.
The wherein described second power supply module maintains the gate pole of the GCT devices, cathode short circuit, until the GCT devices
Voltage between anode, cathode is down to security value (s) or less.
The status information of itself and external power supply can be fed back to monitoring and communication by first, second and third power module
Module；The monitoring and communication module report the status information to superior system.
The wherein described GCT devices and gate-drive, collectively form IGCT devices or ETO devices.
Using above-mentioned technical proposal, the beneficial effects of the utility model are：
1) meet the needs of GCT gate-drives unit directly takes electricity from GCT devices high-pressure side main circuit, without from
Low potential carries out high_voltage isolation power supply to the gate-drive unit of GCT, greatly reduces device volume and cost, improves reliable
Property；
2) a variety of stand-by power supply modes are provided, reliability is enhanced；
3) increase power on, the power supply management strategy of power process, the voltage breakdown during effectivelying prevent.
Description of the drawings
Fig. 1 prior arts are applied to the electric power management circuit of the gate-drive of GCT devices
Fig. 2 the utility model is applied to the embodiment of the Novel electric power management circuits of the gate-drive of GCT devices.
Specific implementation mode
Specific embodiment of the utility model is expanded on further in conjunction with the technical solution of the utility model and attached drawing.
The Novel electric power management circuits of the gate-drive applied to GCT devices of the utility model, as shown in Fig. 2, including
First power module, in course of normal operation, for the shutdown module of GCT devices tens mF capacitance groups, open module, monitoring and
The modules such as communication module are powered；Second power supply module, the first power module of electric coupling, for opening powering on for GCT devices
Power supply in dynamic and power process is managed, and using the anode of the GCT devices, cathode voltage to first power supply
Module carries out stand-by power supply.Second power supply module is mainly used for the capacitance of the breaking circuit module in GCT device power up not
When completing charging, certain reverse bias voltage is provided between the gate poles of GCT devices, cathode, or by the door of the GCT devices
Pole, cathode short circuit；The capacitance voltage of breaking circuit module is lower in the GCT devices power process, is described
There is provided certain reverse bias voltage between the gate poles of GCT devices, cathode, or by the gate pole of the GCT devices, cathode short circuit.Its
In, it powers in GCT devices, power off, in course of normal operation, by second power supply module using between the anodes of GCT devices, cathode
Voltage is powered for the first power module, closes the external power supply, external power supply power supply is reduced, to ensure that GCT devices can
It is resistant to specified direct current and transient voltage and voltage change ratio.
Further comprise third power module, the first power module of the upper and lower adjacent level GCT devices of electric coupling, for carrying
For the stand-by power supply of the first power module of upper and lower adjacent level GCT devices, spare isolation is carried out to adjacent GCT devices and is powered；The
One power module electric coupling third power module is powered for the third power module.
In addition, when the third power module exception of external power supply abnormal electrical power supply and adjacent level GCT devices, the second electricity of this grade
Source module can also take electricity between GCT positive and negative pole tensions, by the first power module be open module, shutdown module carry out it is short
When power, the error protection for GCT institutes application system provides buffer time.
Wherein, in external power supply power supply exception and second power supply module exception, the third power supply mould of adjacent level GCT devices
Block is powered by the first power module of this grade to open module, turning off module.
As shown in Fig. 2, each power module is connected as corresponding construction parts power supply by a dotted line；Monitoring and communication module pass through
Dotted line connection is monitored to opening the monitored control modules such as module, shutdown module, third power module；Wherein first and second,
The status information of itself and external power supply can be fed back to monitoring and communication module by three power modules；The monitoring and communication
Module reports these status informations to superior system；Module, shutdown module, second power supply module etc. is opened by solid line respectively to connect
Connect the gate pole and cathode of GCT devices.
Wherein, reverse bias voltage threshold value is equal to or less than the first power supply between the gate pole, cathode of second power supply module offer
The predetermined voltage threshold of module, and in the GCT devices power up, when GCT device anodes, cathode voltage rise to it is relatively low
When voltage, reverse bias voltage threshold value between the preset gate pole of second power supply module, cathode is charged to rapidly.
Reverse bias voltage wherein between the gate pole, cathode of second power supply module offer, maintains the sun until the GCT devices
Voltage between pole, cathode is down to security value (s) or less.
Wherein second power supply module is in the GCT devices power up, when on the GCT device anodes, cathode voltage
When rising to low voltage, rapidly by gate pole, cathode short circuit.Second power supply module maintains gate pole, the cathode of the GCT devices short
Road, until the voltage between the anode of the GCT devices, cathode is down to security value (s) or less.
The electric power management circuit of the utility model, the electric power management circuit in order to improve the utility model are answered in High Voltage Cascade
Power supply reliability in prevents from causing to drive power down, this reality because of the power module failure that certain level-one is powered for driving unit
With the power management module of novel each submodule, while as the stand-by power supply of front and back two adjacent submodules, to adjacent
Submodule carries out isolation power supply.
In conclusion the electric power management circuit of the gate-drive applied to GCT devices using the utility model, advantage
It is：
1) meet the needs of GCT gate-drives unit directly takes electricity from GCT devices high-pressure side main circuit, without from
Low potential carries out high_voltage isolation power supply to the gate-drive unit of GCT, greatly reduces device volume and cost, improves reliable
Property；
2) a variety of stand-by power supply modes are provided, reliability is enhanced；
3) increase power on, the power supply management strategy of power process, the voltage breakdown during effectivelying prevent.
Although according to above embodiment described the utility model, person of ordinary skill in the field it should be understood that
Can the utility model be realized by modification in the spirit and scope of the appended claims.All such changes and modifications all purports
It is falling within the scope of the appended claims.Therefore, example and attached drawing are considered to be illustrative rather than restrictive.
Claims (10)
1. a kind of electric power management circuit applied to GCT device gate-drives connects external power supply, it is characterised in that：
Including：
First power module is the shutdown module of the GCT devices gate-drive, open module and monitoring is carried out with communication module
Power supply；
Second power supply module, the first power module described in electric coupling, for the electrifying startup and power process to the GCT devices
In power supply be managed, and using the anode of the GCT devices, cathode voltage to first power module carry out it is spare
Power supply；
The first and second power module electric coupling external power supply, the external power supply are powered for first and second power module.
2. electric power management circuit as described in claim 1 further comprises third power module, the third power module electricity
The first power module for coupling upper and lower adjacent level GCT devices, the first power module for providing upper and lower adjacent level GCT devices
Stand-by power supply, spare isolation power supply is carried out to the adjacent GCT devices；Third electricity described in the first power module electric coupling
Source module is powered for the third power module.
3. electric power management circuit as claimed in claim 2, wherein in the external power supply abnormal electrical power supply and adjacent level GCT devices
When the third power module exception of part, the second power supply module takes electricity from the positive and negative voltage across poles of the GCT devices, passes through
First power module is powered to open module, turning off module.
4. electric power management circuit as described in claim 1, wherein the second power supply module, in the GCT devices
When the capacitance of breaking circuit module does not complete charging in electric process, provided between the gate poles of the GCT devices, cathode certain anti-
It is short-circuit to bias voltage, or by the gate pole of the GCT devices, cathode.
5. electric power management circuit as described in claim 1, wherein the second power supply module, for disconnected in the GCT devices
In the case of the capacitance voltage of breaking circuit module is lower in electric process, provided between the gate poles of the GCT devices, cathode certain
Reverse bias voltage, or by the gate pole of the GCT devices, cathode short circuit.
6. electric power management circuit as claimed in claim 4, wherein the door for the GCT devices that the second power supply module provides
Reverse bias voltage threshold value is equal to or less than the predetermined voltage threshold of first power module between pole, cathode, and in the GCT
In device power up, when the GCT device anodes, cathode voltage rise to low voltage, described is charged to rapidly
Reverse bias voltage threshold value between the preset gate pole of two power modules, cathode；The GCT devices that the second power supply module provides
Gate pole, reverse bias voltage between cathode, maintain until the voltage between the anodes of the GCT devices, cathode is down to security value (s)
Below.
7. electric power management circuit as described in claim 1, wherein the second power supply module is in the GCT devices power up
In, when anode, the cathode voltage of the GCT devices rise to low voltage, rapidly by gate pole, the moon of the GCT devices
Extremely short road；The second power supply module maintains the gate pole of the GCT devices, cathode short circuit, until the anode of the GCT devices,
Voltage between cathode is down to security value (s) or less.
8. electric power management circuit as described in claim 1, wherein powering in the GCT devices, powering off, course of normal operation
In, it is supplied for first power module using anode, the cathode voltage of the GCT devices by the second power supply module
Electricity closes the external power supply, reduces external power supply power supply.
9. electric power management circuit as claimed in claim 2, wherein in the external power supply abnormal electrical power supply and second power supply module
When abnormal, the third power module of the adjacent level GCT devices is to open module, shutdown mould by first power module
Block is powered.
10. electric power management circuit as claimed in any one of claims 1-9 wherein, wherein the GCT devices are IGCT devices or ETO
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820003158.8U CN207753615U (en) | 2018-01-02 | 2018-01-02 | Electric power management circuit applied to GCT device gate-drives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820003158.8U CN207753615U (en) | 2018-01-02 | 2018-01-02 | Electric power management circuit applied to GCT device gate-drives |
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| Publication Number | Publication Date |
|---|---|
| CN207753615U true CN207753615U (en) | 2018-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820003158.8U Active CN207753615U (en) | 2018-01-02 | 2018-01-02 | Electric power management circuit applied to GCT device gate-drives |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108092491A (en) * | 2018-01-02 | 2018-05-29 | 清华大学 | Electric power management circuit applied to GCT device gate-drives |
-
2018
- 2018-01-02 CN CN201820003158.8U patent/CN207753615U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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