CN106655731A - Solid-state opening and closing drive circuit of low-voltage circuit breaker and adaptive drive method of solid-state opening and closing drive circuit - Google Patents
Solid-state opening and closing drive circuit of low-voltage circuit breaker and adaptive drive method of solid-state opening and closing drive circuit Download PDFInfo
- Publication number
- CN106655731A CN106655731A CN201611269272.7A CN201611269272A CN106655731A CN 106655731 A CN106655731 A CN 106655731A CN 201611269272 A CN201611269272 A CN 201611269272A CN 106655731 A CN106655731 A CN 106655731A
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- drive circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electronic Switches (AREA)
Abstract
The invention relates to a solid-state opening and closing drive circuit of a low-voltage circuit breaker and an adaptive drive method of the solid-state opening and closing drive circuit. The solid-state opening and closing drive circuit comprises a DSC chip, an auxiliary power supply unit, a drive unit and a full-bridge coil drive main circuit, wherein the power supply unit is connected with a high-voltage side of the drive unit and provides the drive unit with working voltage; the drive unit is connected with a switching device in the full-bridge coil drive main circuit; the DSC chip is connected with low-voltage sides of the drive unit and the power supply unit separately; the DSC chip provides the drive unit with a coil drive logic and simultaneously provides the power supply unit with a drive logic signal; a switch S1 and a switch S2 in the full-bridge coil drive main circuit are complementary, a switch S3 and a switch S4 are complementary, the drive logics of the switch S1 and the switch S4 have phase-shift angles theta and the phase-shift angles are adjustable; when the switch S1 and the switch S4 are simultaneously turned on, the opening action is achieved; and when the switch S2 and the switch S3 are simultaneously turned on, the closing action is achieved. According to the solid-state opening and closing drive circuit of the low-voltage circuit breaker, an opening and closing coil can be quickly and safely driven and the mechanical shock of a closing mechanism caused by over-high coil current is effectively reduced.
Description
Technical field
The present invention relates to electric power protection control field, more particularly to a kind of control of intelligent type permanent magnet formula moulded case circuit breaker operation mechanism
Device processed.
Background technology
The control driving of conventional circuit breaker divide-shut brake is, using relay triggering mode, in divide-shut brake power system break-make to be controlled
Shi Rongyi produces larger surge current and induced overvoltage, and the service life and reliability for causing switchgear is substantially reduced,
Real-time cannot be guaranteed and have the phenomenon of arcing.Therefore, in order to overcome traditional scheme the drawbacks of, lift conventional electrical distribution system
The power supply reliability and stability of system and distributed power system, the drive circuit that research circuit-breaker switching on-off is controlled has important
Meaning.
Circuit-breaker switching on-off control drive circuit low-pressure side used in power system at present is perceptual, once in main electricity
Trackside breaks down and is very easy to involve drive circuit, causes bigger harm.Therefore, the safety and stability of drive circuit is needed
Further to be lifted.
The circuit of the divide-shut brake coil driven using solid-state switches such as IGBT, its difficult point is the big of uncontrollable electromagnetic force
It is little, it is ensured that the operating life of divide-shut brake mechanical mechanism.
The content of the invention
It is contemplated that overcoming the drawbacks such as security, the reliability of above-mentioned technology presence, propose that a kind of low-voltage circuit breaker is consolidated
State divide-shut brake drive circuit and its self-adaptation drive method, concrete technical scheme is as follows：
The present invention is driven using full-bridge type drive circuit, and is provided with the realization of logic control chip to full-bridge type driving
Circuit provides coil drive logic, and logic control chip also has the function of providing power supply unit driving logical signal.
Including DSC chips, power supply unit, driver element, full-bridge type drive circuit；
Said supply unit is connected with the high-pressure side of driver element, and for it operating voltage is provided, and driver element drives with full-bridge type
Switching device connection in circuit, DSC chips are connected respectively with the low-pressure side of driver element and power supply unit；
The DSC chips provide coil drive logic for driver element, while providing driving logical signal for power supply unit；
Full-bridge type drive circuit the breaker in middle S1 and S2 are complementary, and S3 and S4 is complementary, and S1 and S4 drives logic to carry phase shifting angle,
Phase shifting angle is adjustable；Wherein S1, S4 are opened simultaneously when, DC voltage forward direction is added in coil two ends, realizes separating brake action；When S2,
S3 is opened simultaneously when, DC voltage is reversely added in divide-shut brake coil two ends, realizes feed motion.
The switching device of the full-bridge type coil drive main circuit is IGBT.
, using complete isolated driving, it is by RC wave filters, driving chip HCPL-3120, decoupling electricity for the break-make of control IGBT
Appearance be sequentially connected composition, by the photoelectric coupling circuit inside HCPL-3120 by input pulse signal become suspension high level+
16V, the pulse signal of low level -8V control the break-make of IGBT.
The small-power accessory power supply that said supply unit is driven using single concussion source.
The small-power accessory power supply：By PWM drive signal, MIC4422YM chips, high frequency transformer, capacitance, half
Bridge rectifier is sequentially connected composition.DSC sends the high-frequency PWM signal that dutycycle is 50%, this signal drive by
The half-bridge inverter that MIC4422YM chips are realized；The 12V DC voltages of outside input are transformed to through capacitance6V is handed over
Stream square-wave voltage, is 1 by no-load voltage ratio：2 high frequency transformer becomesThe ac square-wave voltage of 12V, after half bridge rectifier
The final supply voltage for obtaining direct current 24V for high-pressure side driving circuit.
Phase shifting angle by detecting different line currents under required coil current minimum peak, then by look-up table
Draw.
The control method of the drive circuit that a kind of breaker is controlled with solid-state divide-shut brake, by the main electricity of full-bridge type coil drive
Road carries out divide-shut brake control, is described as follows：
Breaker in middle S1 and S2 are complementary for drive circuit, and S3 and S4 is complementary, and S1 and S4 drives logic to carry phase shifting angle, divide-shut brake coil K
It is connected to the bridge arm midpoint of full-bridge circuit；When S1, S4 are opened simultaneously, DC voltage forward direction is added in coil two ends, realizes dividing
Lock action；When S2, S3 are opened simultaneously, DC voltage is reversely added in divide-shut brake coil two ends, realizes feed motion, when S1,
When S3 is simultaneously turned on, driving coil is shorted, and coil current slowly declines；When S2, S4 are simultaneously turned on, driving coil is short
Road, coil current slowly declines；
By the size that phase shifting angle is determined according to current flow virtual value and peak value, provide different coil divisions for coil and drive
Energy.
Coil division driving energy is determined by the following manner：
1）Determine whether breaker closes a floodgate first, if being not at "on" position, carry out next step：
2）Measurement current flow virtual value and peak value, and by tabling look-up/interpolation method determines phase shifting angle；
3）Devised a stratagem really by phase shifting angle and calculate phase shift digital quantity, and delay variable is set accordingly, so as to effectively control to close a floodgate
Electromagnetic force.
It is an advantage of the invention that：
1）The drive circuit of the circuit-breaker switching on-off control device that the present invention is provided, employs full-bridge type coil driver, energy
It is enough quickly to realize divide-shut brake and without phenomenon of arc discharge；
2）Complete isolated driving chip is have selected for full-bridge coil circuit IGBT drives, the security of drive circuit is improved；
Small-power accessory power supply by the use of single oscillator drives greatlys save resource as the power supply unit of drive circuit；
3）The size of phase shifting angle is determined according to current flow virtual value and peak value by control algolithm, for coil different lines are provided
Circle division driving energy, can effectively reduce the mechanical shock of the switching-on mechanism caused because coil current is excessive.
Description of the drawings
Fig. 1 is the drive circuit figure of the circuit-breaker switching on-off control device.
Fig. 2 is the full-bridge type coil drive main circuit diagram.
Fig. 3 is the complete isolated drive circuit figure.
Fig. 4 is the auxiliary power circuit figure.
Fig. 5 is that separating brake drives logic chart.
Fig. 6 drives logic chart to close a floodgate.
Fig. 7 is that DSC interrupts flow chart.
Fig. 8 tables look-up for control logic.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
Such as Fig. 1, the drive circuit of the circuit-breaker switching on-off control that the present embodiment is provided, including DSC chips, power supply unit,
Driver element, full-bridge type coil drive main circuit, power supply unit is connected with driver element, and to it operating voltage is provided, and drives single
Unit is connected with the IGBT in full-bridge type coil drive main circuit, and DSC chips are connected respectively with driver element and power supply unit.
Full-bridge type coil drive main circuit in such scheme is as shown in Fig. 2 by tetra- IGBT of S1, S2, S3, S4 and divide-shut brake
Coil Lm is constituted.When S1, S4 are open-minded, DC voltage forward direction is added in coil two ends, realizes separating brake action；When S2, S3 it is open-minded, directly
Stream side voltage reversal is added in divide-shut brake coil two ends, realizes feed motion.
The complete isolated drive circuit figure as described in Fig. 3 is, using RC wave filters, driving chip HCPL-3120, decoupling capacitor
The complete isolated drive circuit of composition.The pulse signal that controller DSC sends high level for 3.3V low levels for 0V is not enough to allow
IGBT opens shut-off, and it is+16V that pulse signal is become into high level by complete isolated drive circuit, and low level is the pulse of -8V
Signal controls the break-make of IGBT.
Auxiliary power circuit as shown in Figure 4, by concussion source, MIC4422YM driving chips, high frequency transformer, every straight electricity
Hold composition, to drive circuit supply voltage is provided.Controller DSC sends a frequency for the PWM letters that 184KHz dutycycles are 50%
Number as concussion source, by the MIC4422YM driving chips of outside 12V direct current supplys, concussion source high level is lifted to+12V,
Again by capacitance, obtaining level is6V ac square-wave voltages, are 1 by no-load voltage ratio：2 high frequency transformer becomes12V's
Ac square-wave voltage, finally gives direct current 24V supply voltages.
Divide-shut brake as shown in Figure 5,6 drives logic chart, during divide-shut brake, by the logic control S1 of chip, S2,
Tetra- switching devices of S3, S4 realize divide-shut brake in the varying level state of different periods, and are opened by the flow process determination of Fig. 7
Close device S1, S4 phase shifting angle, and therefore arrange delay variable, so as to avoid rushing for the switching-on mechanism caused because electric current is excessive
Hit.
Claims (9)
1. the drive circuit that a kind of breaker is controlled with solid-state divide-shut brake, it is characterised in that carried out using full-bridge type drive circuit
Drive, and be provided with logic control chip and realize providing coil drive logic, logic control core to the full-bridge type drive circuit
Piece also has the function of providing power supply unit driving logical signal.
2. the drive circuit that a kind of breaker according to claim 1 is controlled with solid-state divide-shut brake, it is characterised in that include
DSC chips, power supply unit, driver element, full-bridge type drive circuit；
Said supply unit is connected with the high-pressure side of driver element, and for it operating voltage is provided, and driver element drives with full-bridge type
Switching device connection in circuit, DSC chips are connected respectively with the low-pressure side of driver element and power supply unit；
The DSC chips provide coil drive logic for driver element, while providing driving logical signal for power supply unit；
Full-bridge type drive circuit the breaker in middle S1 and S2 are complementary, and S3 and S4 is complementary, and S1 and S4 drives logic to carry phase shifting angle,
Phase shifting angle is adjustable；Wherein S1, S4 are opened simultaneously when, DC voltage forward direction is added in coil two ends, realizes separating brake action；When S2,
S3 is opened simultaneously when, DC voltage is reversely added in divide-shut brake coil two ends, realizes feed motion.
3. the drive circuit that a kind of breaker according to claim 2 is controlled with solid-state divide-shut brake, it is characterised in that described
The switching device of full-bridge type coil drive main circuit is IGBT.
4. the drive circuit that a kind of breaker according to claim 3 is controlled with solid-state divide-shut brake, it is characterised in that control
Using complete isolated driving, it is sequentially connected group to the break-make of IGBT by RC wave filters, driving chip HCPL-3120, decoupling capacitor
Into, by the photoelectric coupling circuit inside HCPL-3120 by input pulse signal become suspend high level+16V, low level-
The pulse signal of 8V controls the break-make of IGBT.
5. the drive circuit that a kind of circuit-breaker switching on-off according to claim 1 is controlled, it is characterised in that the power supply list
The small-power accessory power supply that unit is driven using single concussion source.
6. the drive circuit that a kind of circuit-breaker switching on-off according to claim 5 is controlled, it is characterised in that the small-power
Accessory power supply：Group is sequentially connected by PWM drive signal, MIC4422YM chips, high frequency transformer, capacitance, half bridge rectifier
The high-frequency PWM signal that dutycycle is 50% is sent into, DSC, this signal drives the half-bridge realized by MIC4422YM chips inverse
Become device；The 12V DC voltages of outside input are transformed to through capacitance6V ac square-wave voltages, are 1 by no-load voltage ratio：2
High frequency transformer becomeThe ac square-wave voltage of 12V, it is final after half bridge rectifier to obtain direct current 24V for high-pressure side drive
The supply voltage of dynamic circuit.
7. the drive circuit that a kind of circuit-breaker switching on-off according to claim 2 is controlled, it is characterised in that phase shifting angle leads to
Cross and detect coil current minimum peak required under different line currents, then drawn by look-up table.
8. the self-adaptation drive method of the drive circuit that a kind of breaker is controlled with solid-state divide-shut brake, it is characterised in that by complete
Bridge coil drives main circuit to carry out divide-shut brake control, is described as follows：
Breaker in middle S1 and S2 are complementary for drive circuit, and S3 and S4 is complementary, and S1 and S4 drives logic to carry phase shifting angle, divide-shut brake coil K
It is connected to the bridge arm midpoint of full-bridge circuit；When S1, S4 are opened simultaneously, DC voltage forward direction is added in coil two ends, realizes dividing
Lock action；When S2, S3 are opened simultaneously, DC voltage is reversely added in divide-shut brake coil two ends, realizes feed motion, when S1,
When S3 is simultaneously turned on, driving coil is shorted, and coil current slowly declines；When S2, S4 are simultaneously turned on, driving coil is short
Road, coil current slowly declines；
By the size that phase shifting angle is determined according to current flow virtual value and peak value, provide different coil divisions for coil and drive
Energy.
9. the self adaptation driving side of the drive circuit that a kind of breaker according to claim 8 is controlled with solid-state divide-shut brake
Method, it is characterised in that coil division driving energy is determined by the following manner：
1）Determine whether breaker closes a floodgate first, if being not at "on" position, carry out next step：
2）Measurement current flow virtual value and peak value, and by tabling look-up/interpolation method determines phase shifting angle；
3）Devised a stratagem really by phase shifting angle and calculate phase shift digital quantity, and delay variable is set accordingly, so as to effectively control to close a floodgate
Electromagnetic force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611269272.7A CN106655731A (en) | 2016-12-31 | 2016-12-31 | Solid-state opening and closing drive circuit of low-voltage circuit breaker and adaptive drive method of solid-state opening and closing drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611269272.7A CN106655731A (en) | 2016-12-31 | 2016-12-31 | Solid-state opening and closing drive circuit of low-voltage circuit breaker and adaptive drive method of solid-state opening and closing drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106655731A true CN106655731A (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611269272.7A Withdrawn CN106655731A (en) | 2016-12-31 | 2016-12-31 | Solid-state opening and closing drive circuit of low-voltage circuit breaker and adaptive drive method of solid-state opening and closing drive circuit |
Country Status (1)
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| CN (1) | CN106655731A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111048368A (en) * | 2018-10-11 | 2020-04-21 | 江苏爱斯凯电气有限公司 | Solid-state drive unit and layered drive method of circuit breaker |
-
2016
- 2016-12-31 CN CN201611269272.7A patent/CN106655731A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111048368A (en) * | 2018-10-11 | 2020-04-21 | 江苏爱斯凯电气有限公司 | Solid-state drive unit and layered drive method of circuit breaker |
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| PB01 | Publication | ||
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Application publication date: 20170510 |