CN217426658U - Permanent magnet circuit breaker controller with master-slave backup driver - Google Patents
Permanent magnet circuit breaker controller with master-slave backup driver Download PDFInfo
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- CN217426658U CN217426658U CN202221350317.4U CN202221350317U CN217426658U CN 217426658 U CN217426658 U CN 217426658U CN 202221350317 U CN202221350317 U CN 202221350317U CN 217426658 U CN217426658 U CN 217426658U
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Abstract
The utility model relates to a permanent magnetism circuit breaker controller with master slaver backup driver belongs to the technical field of electricity generation, transformer or distribution. This permanent magnetism circuit breaker controller includes: the system comprises an MCU, a set of power supplies, a permanent magnet driver main circuit output unit, a permanent magnet driver secondary circuit output unit, a first charging control circuit, a second charging control circuit, a first switching-on/off capacitor charging circuit and a second switching-on/off capacitor charging circuit, wherein a set of control system and a set of power supplies are used for controlling the output of two sets of circuit breakers; simultaneously controlling two groups of output bridges to achieve the effect of one master bridge and one slave bridge; the effect of quickly completing H bridge control is achieved by using a resistor and a diode which are connected in parallel; the charging uses diode single-phase charging to ensure the electric quantity of the brake-separating capacitor and ensure reliable brake separation. The invention realizes a highly reliable permanent magnet circuit breaker controller with lower cost through a simple mode.
Description
Technical Field
The utility model relates to a distribution automation technology, concretely relates to permanent magnetism circuit breaker controller with master slaver backup driver belongs to the technical field of electricity generation, transformer or distribution.
Background
The traditional operating mechanism of the medium-voltage circuit breaker mainly adopts an electromagnetic mechanism and a spring mechanism. In recent years, permanent magnet operating mechanisms have been developed in succession in the medium voltage field at home and abroad. The permanent magnet mechanism adopts a unique structure and a working principle, and realizes the function of keeping the terminal position of the mechanism by a permanent magnet, thereby replacing the traditional mechanical tripping and locking functions. When the charged and stabilized electrolytic capacitors are used for closing and opening the brake coil to discharge, the closing and opening brake coil obtains electric energy and provides operation momentum for the permanent magnetic mechanism. The appearance of the permanent magnetic mechanism creates good material conditions for realizing the synchronous closing technology.
The permanent magnet circuit breaker is driven by the controller, and in order to ensure safety of power grid equipment, the permanent magnet driver is required to have one main output and one standby output, because the cost of a power supply system and an MCU system is higher, and if each permanent magnet driver is provided with the power supply system and the MCU system, the cost is higher. The existing permanent magnet circuit breaker controller adopts independent charging loops to charge a closing capacitor and an opening capacitor respectively or simultaneously charge the closing capacitor and the opening capacitor, when one of the charging loops of the closing capacitor charging loop and the opening capacitor charging loop has a fault, the closing capacitor or the opening capacitor cannot obtain electric energy, and the circuit breaker cannot be reliably closed or opened. The inconsistent turn-on and turn-off time of each IGBT gate in the H-bridge is one of the causes of damage to the permanent magnet driver, and an improvement on an H-bridge driving circuit is needed to overcome the defect.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an object of the invention is to the not enough of above-mentioned background art, a permanent magnetism circuit breaker controller with principal and subordinate spare driver is provided, through a set of power, two permanent magnetism driver outputs of MCU control, utilize a set of power to provide charging source for the separating brake electric capacity that closes among two permanent magnetism drivers, with separating brake electric capacity concatenate in the discharge circuit of combined brake electric capacity in order to guarantee that separating brake electric capacity does not cut off the electricity, reverse parallel connection diode makes the IGBT on the H bridge turn-off fast on the little resistance of H bridge drive signal output end, guarantee the reliable switching of two permanent magnetism driver outputs, the permanent magnetism circuit breaker controller that the solution has a main one and is equipped with permanent magnetism driver is with high costs and has the technical problem that can not reliably close the separating brake hidden danger.
The utility model adopts the following technical proposal for realizing the purpose of the invention:
a permanent magnet circuit breaker controller with master-slave backup drives, comprising:
the MCU sends a first charging control instruction to the first charging control circuit, or sends a second charging control instruction to the second charging control circuit, or sends a first switching-on/off instruction to the main circuit output unit of the permanent magnet driver, or sends a second switching-on/off instruction to the auxiliary circuit output unit of the permanent magnet driver;
the main circuit output unit of the permanent magnet driver comprises a first driving circuit, a first H bridge and a first switching-on/switching-off coil, wherein the input end of the first driving circuit receives a first switching-on/switching-off command, the control end of each IGBT in the first H bridge is connected with the output end of the first driving circuit, and the first switching-on/switching-off coil is connected between the middle points of two bridge arms of the first H bridge;
the permanent magnet driver slave output unit comprises a second drive circuit, a second H bridge and a second switching-on/switching-off coil, wherein the input end of the second drive circuit receives a second switching-on/switching-off command, the control end of each IGBT in the second H bridge is connected with the output end of the second drive circuit, and the second switching-on/switching-off coil is connected between the middle points of two bridge arms of the second H bridge;
the input end of the first charging control circuit receives a first charging control instruction and is connected with the power supply end of the first combined separating brake capacitor charging circuit to an output power supply;
the input end of the second charging control circuit receives a second charging control instruction and is connected with the power supply end of the second combined separating brake capacitor charging circuit to the output power supply;
a first combined and separated gate capacitor charging circuit, wherein the power supply end of the first combined and separated gate capacitor charging circuit is connected with an output power supply, and the first combined and separated gate capacitor is connected between the positive and negative polarity terminals of the first H bridge;
the power supply end of the second combined opening capacitor charging circuit is connected with an output power supply, and the second combined opening capacitor is connected between the positive and negative polarity terminals of the second H bridge; and a process for the preparation of a coating,
and the set of power supplies provides output power.
Further, in a permanent magnet circuit breaker controller having a master-slave backup driver, a first driving circuit has the same structure as a second driving circuit, and the first driving circuit includes: the driving circuit comprises a first driving unit and a second driving unit, wherein the first driving unit outputs driving signals to upper and lower switching tubes of a first bridge arm of a first H bridge, the second driving unit outputs driving signals to upper and lower switching tubes of a second bridge arm of the first H bridge, the first driving unit and the second driving unit have the same circuit structure, and the first driving unit comprises: the first optical coupling chip and a peripheral circuit thereof, the half-bridge driving chip and a peripheral circuit thereof, wherein the anode of the first optical coupling chip is connected with 3.3V direct current through a seventh resistor, the cathode of the first optical coupling chip receives a first switching-on/off command, the cathode of the first optical coupling chip is connected with one end of a second resistor, the other end of the second resistor is connected with 3.3V direct current, the collector of the first optical coupling chip is connected with a power supply of a main circuit output unit of a permanent magnet driver, the emitter of the first optical coupling chip is connected with one end of a third resistor, the other end of the third resistor is connected with one end of a fifth resistor, the positive plate of a third capacitor and a logic input end of the half-bridge driving chip for controlling the output of upper tube and lower tube driving signals, the other end of the fifth resistor and the negative plate of the third capacitor are all grounded, the power supply end of a lower tube of the half-bridge driving chip, the positive plate of the first capacitor and one end of the first resistor are all connected with the power supply of the output unit of the permanent magnet driver, the other end of the first resistor is connected with the anode of the first diode, the closing output logic input end of the half-bridge driving chip is suspended, the lower tube feedback signal input end of the half-bridge driving chip and the negative plate of the first capacitor are all grounded, the upper tube floating voltage output port of the half-bridge driving chip and the cathode of the first diode are all connected with the positive plate of the second capacitor, the upper tube floating voltage feedback signal input end of the half-bridge driving chip is connected with the negative plate of the second capacitor, the upper tube driving signal output end of the half-bridge driving chip is connected with one end of the fourth resistor, the cathode of the second diode is connected, the other end of the fourth resistor is connected with the anode of the second diode and then used as the output end of the switch driving signal on the first bridge arm, the lower tube driving signal output end of the half-bridge driving chip is connected with one end of the sixth resistor and the cathode of the fourth diode, and the other end of the sixth resistor is connected with the anode of the fourth diode and then used as the output end of the driving signal of the switch tube under the first bridge arm.
Further, in a permanent magnet circuit breaker controller having a master-slave backup driver, a first combined opening capacitor charging circuit includes: the negative electrode of the eighth diode and the positive electrode of the twelfth polar tube are connected with the positive electrode plate of the switching-on capacitor, and the negative electrode plate of the switching-off capacitor and the negative electrode plate of the switching-on capacitor are grounded together with the first H bridge.
Further, in the permanent magnet circuit breaker controller with the master-slave backup driver, the first charging control circuit is a second optical coupling chip and a peripheral circuit thereof, the anode of the second optical coupling chip is connected with 3.3V direct current through an eighth resistor, the cathode of the second optical coupling chip is connected with 3.3V logic level through a twenty-seventh resistor, the collector of the second optical coupling chip is connected with a power supply of the first charging control circuit, the emitter of the second optical coupling chip is connected with the anode of an eighteenth diode, the cathode of the eighteenth diode and the cathode of a nineteenth diode are both connected with one end of a relay coil, the anode of the nineteenth diode and the other end of the relay coil are both connected with the ground of the power supply of the first charging control circuit, and the two ends of a knife switch controlled by the relay coil are respectively connected with the power supply end of a first on-off capacitor charging circuit and the output power supply connecting terminal.
Furthermore, in a permanent magnet circuit breaker controller with a master-slave backup driver, the model of the first optical coupling chip is IRS 2104.
Furthermore, in the permanent magnet circuit breaker controller with the master-slave backup driver, the model of a half-bridge driving chip is HCPL-181-00 CE.
Further, in a permanent magnet circuit breaker controller with a master-slave backup driver, the model of the second optocoupler chip is TLP 127.
Furthermore, in the permanent magnet circuit breaker controller with the master-slave backup driver, a set of power supplies provides a power supply of the master output unit of the permanent magnet driver, a power supply of the slave output unit of the permanent magnet driver, a power supply of the first charging control circuit and a power supply of the second charging control circuit.
The utility model adopts the above technical scheme, following beneficial effect has:
(1) the utility model relates to a permanent magnetism circuit breaker controller adopts one set of MCU system simultaneous control owner one to be equipped with two permanent magnetism drivers to adopt one set of electrical power generating system to provide charging source for two sets of separating brake electric capacity that close, can save whole device cost, improve the device reliability.
(2) The utility model discloses anti-parallel diode on the little resistance of drive circuit output reaches the effect of accomplishing H bridge control fast, guarantees that one owner is equipped with two permanent magnet driver and reliably switches.
(3) The utility model discloses utilize diode one-way conduction's characteristic, will close the separating brake electric capacity and connect H bridge discharge circuit, when separating brake electric capacity voltage is less than combined floodgate electric capacity voltage, direct current power supply and combined floodgate electric capacity that one set of electrical power generating system provided all can charge separating brake electric capacity, guarantee reliable separating brake.
Drawings
Fig. 1 is a block diagram of the controller of the permanent magnet circuit breaker of the present invention.
Fig. 2 is a circuit diagram of the discharge to the first switching-on/off coil formed by the first H bridge and the first combined switching-off capacitor in the main circuit output unit of the permanent magnet driver.
Fig. 3 is a circuit diagram of a driving unit in the controller of the permanent magnet circuit breaker of the present invention.
Fig. 4 is a circuit diagram of a first charging control circuit in the permanent magnet circuit breaker controller of the present invention, fig. 4(a) is a circuit diagram of a relay coil charging circuit, and fig. 4(b) is a circuit diagram of a disconnecting link controlled by a relay coil.
The reference numbers in the figures illustrate: Q1-Q4 are first IGBT to fourth IGBT, C1-C3 are first capacitor to third capacitor, C5 is separating capacitor, C6 is closing capacitor, D1-D10 are first diode to twelfth diode, D14-D17 are fourteenth diode to seventeenth diode, VT1 and VO1 are eighteenth diode and nineteenth diode, U1 is first optical coupler chip, U2 is half-bridge driving chip, BO1 is second optical coupler chip, R1-R6 are first resistor to sixth resistor, RO1 and RO5 are seventh resistor and eighth resistor, R27 is twenty-seventh resistor, K1A is relay coil, and K1D is knife switch.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings.
The utility model relates to a permanent magnetism circuit breaker as shown in figure 1, include: the device comprises an MCU, a permanent magnet driver main circuit output unit, a permanent magnet driver secondary circuit output unit, a first charging control circuit, a second charging control circuit, a first combined split-gate capacitor charging circuit, a second combined split-gate capacitor charging circuit and a set of power supply. The utility model discloses use one set of power and a MCU system control permanent magnet driver main road output unit, permanent magnet driver from way output unit, use one set of power, first charge control circuit, second charge control circuit to provide charging source for two sets of separating brake electric capacity that close, reduce power and MCU's use, can greatly save the cost.
The main circuit output unit of the permanent magnet driver comprises: the first driving circuit receives a first switching-on/off instruction sent by the MCU and then generates driving signals of all IGBTs in the first H bridge, a closed circuit formed by the first H bridge and the first switching-on/off capacitor discharges to the first switching-on/off coil connected between the middle points of bridge arms, and when the voltage of the switching-on capacitor is lower than that of the switching-on capacitor, the switching-on capacitor charges the switching-off capacitor, so that the switching-on capacitor is prevented from power failure, and reliable switching-off is realized.
After the first charging control circuit receives a first charging control instruction sent by the MCU, the power supply end of the first combined separating brake capacitor charging loop is connected to an output power supply VCC, and the VCC is a 380V charging power supply.
The slave output unit of the permanent magnet driver comprises: the permanent magnet driver slave circuit output unit responds to a second switching-on/off command sent by the MCU in the same process as the permanent magnet driver main circuit output unit responds to the first switching-on/off command.
After the second charging control circuit receives a second charging control instruction sent by the MCU, the power supply end of the second combined separating brake capacitor charging loop is connected to the output power supply VCC.
As shown in fig. 2, a circuit formed by the first H-bridge and the first combined and separated gate capacitor and discharging to the first combined and separated gate coil is shown, and the H-bridge includes: the first arm is formed by connecting the first IGBTQ1 and the fourth IGBTQ4 in series, the second arm is formed by connecting the second IGBTQ2 and the third IGBTQ3 in series, and a first on-off brake coil R25 is connected between the middle points of the two arms. A fifth diode D5 is connected between the collector and the emitter of the first IGBTQ1 in a reverse parallel manner, a seventh diode D7 is connected between the gate and the emitter of the first IGBTQ1, a third diode D3 is connected between the collector and the emitter of the second IGBTQ2 in a reverse parallel manner, a sixth diode D6 is connected between the gate and the emitter of the second IGBTQ2, a fifteenth diode D15 is connected between the collector and the emitter of the third IGBTQ3 in a reverse parallel manner, a seventeenth diode D17 is connected between the gate and the emitter of the third IGBTQ3, a fourteenth diode D14 is connected between the collector and the emitter of the fourth IGBTQ4 in a reverse parallel manner, and a sixteenth diode D16 is connected between the gate and the emitter of the fourth IGBTQ4 in a reverse parallel manner.
The closing capacitor C6, the opening capacitor C5, the eighth diode D8, the ninth diode D9 and the twelfth diode D10 form a first closing and opening capacitor charging circuit. An anode of the eighth diode D8 and an anode of the ninth diode D9 are connected together to serve as a power supply terminal VCC1 of the first combined separating capacitor charging circuit, a cathode of the ninth diode D9 and a cathode of the twelfth diode D10 are both connected with a positive plate of the separating capacitor C5, a cathode of the eighth diode D8 and an anode of the twelfth diode D10 are both connected with a positive plate of the closing capacitor C6, and a negative plate of the separating capacitor C5 and a negative plate of the closing capacitor C6 are grounded together with the first H bridge. A ninth diode D9 connected to the positive plate of the opening capacitor C5 and an eighth diode D8 connected to the positive plate of the closing capacitor C6 are used for ensuring unidirectional charging, and when the voltage of the opening capacitor C5 is higher than that of the closing capacitor C6, the closing capacitor C6 and the opening capacitor C5 can only be charged through an output power supply VCC; when the voltage of the closing capacitor C6 is higher than that of the opening capacitor C5, the closing capacitor C6 and the output power VCC charge the opening capacitor C5 at the same time, and the energy required by opening is ensured to be output.
The driving signals for the first IGBTQ1 and the second IGBTQ2 in the first H-bridge are provided by the driving unit shown in fig. 3, and the driving units for providing the driving signals for the third IGBTQ3 and the fourth IGBTQ4 in the first H-bridge are the same as the driving unit shown in fig. 3. The driving unit shown in fig. 3 comprises a first chip U1 and its peripheral circuit, a second chip U2 and its peripheral circuit, the first chip U1 is of type IRS2104, the second chip U2 is of type HCPL-181-00CE, the anode of the second chip U2 (i.e. port No. 1 of U2) is connected to VCC1 via a seventh resistor RO1, the cathode of the second chip U2 (i.e. port No. 2 of U2) is a first on-off command input terminal, the cathode of the second chip U2 is connected to one end of a second resistor R2, the other end of the second resistor R2 is connected to a 3.3V dc power supply, the collector of the second chip U2 (i.e. port No. 4 of U2) is connected to VCC3, the emitter of the second chip U2 (i.e. port No. 3 of U2) is connected to one end of a third resistor R3, the other end of the third resistor R3 is connected to one end of a fifth resistor R5, the third resistor R69556, the upper tube of the second chip U2 is connected to a positive tube input terminal of the upper tube 8653 and a logic control input terminal of the driving circuit (i.e. 828653), the other end of the fifth resistor R5 and the negative plate of the third capacitor C3 are all connected to GND, one end of the lower tube power supply terminal of the first chip U1 (i.e., port No. 1 of U1), the positive plate of the first capacitor C1 and one end of the first resistor R1 are all connected to the power supply VCC3 of the main output unit of the permanent magnet driver, the other end of the first resistor R1 is connected to the anode of the first diode D1, the logic input terminal of the turn-off output of the first chip U1 (i.e., port No. 3 of U1) is floating, the lower tube feedback signal input terminal of the first chip U1 (i.e., port No. 4 of U1) and the negative plate of the first capacitor C1 are all connected to GND, the upper tube floating voltage output port of the first chip U1 (i.e., port No. 8 of U1) and the cathode of the first diode D1 are all connected to the positive plate of the second capacitor C2, the upper tube floating voltage feedback signal input terminal of the first chip U1 (i.e., port No. 6 of U1) is connected to the negative plate of the second capacitor C2, an upper tube driving signal output end (i.e., port No. 7 of U1) of the first chip U1 is connected to one end of a fourth resistor R4 and a cathode of a second diode D2, the other end of the fourth resistor R4 is connected to an anode of a second diode D2 and then serves as an output end of a first IGBTQ1 driving signal, a lower tube driving signal output end (i.e., port No. 5 of U1) of the first chip U1 is connected to one end of a sixth resistor R6 and a cathode of the fourth diode D4, the other end of the sixth resistor R6 is connected to an anode of the fourth diode D4 and then serves as an output end of a fourth IGBTQ4 driving signal, and VCC3 is a +12V power supply source of the first chip U1 and the second chip U2. The small resistors (namely the fourth resistor R4 and the sixth resistor R6) which are connected with the upper and lower tube driving signal output ends of the second chip U2 are connected with diodes in parallel in a reverse direction, when a high level is applied to the IGBT in the H bridge, the current limiting function of the small resistors ensures that the IGBT normally applies the high level, and the diodes do not work because the voltage on the small resistors does not exceed the reverse voltage of the diodes; when the grid voltage of the IGBT is pulled down, the pulling down of the grid voltage has time delay due to junction capacitance between the grid and the emitter of the IGBT, at the moment, diodes with reverse faces at two ends of a small resistor can be regarded as optical couplers directly connected with the first chip U1, and electric quantity of the junction capacitance between the grid and the emitter of the IGBT is discharged quickly through the COM port of the first chip U1 through the diodes. Therefore, the damage to the device caused by inconsistent on-off time of the IGBT can be avoided.
When the MCU sends a first closing and opening command to the first driving circuit, the port 1 of the driving unit shown in fig. 3 receives the first closing and opening command, the driving unit outputs a first control output signal and a second control signal to the gates of the first IGBTQ1 and the fourth IGBTQ4 of the first H-bridge, the second IGBTQ2 and the third IGBTQ3 obtain driving signals from the other driving unit, under the control of the two sets of driving signals, when the first IGBTQ1 and the fourth IGBTQ4 are turned on, the second IGBTQ2 and the third IGBTQ3 are not turned on, or when the first IGBTQ1Q1 and the fourth IGBTQ4 are not turned on, the second IGBTQ2 and the third IGBTQ3 are turned on, the first H-bridge and the opening capacitor C5 and the closing capacitor C6 form a discharge loop to discharge to the first closing and opening coil R25, when the voltage VCC applied to the twelfth opening and closing capacitor D6866 is lower than the anode switch 3527, and the common switch capacitor C5 outputs a common closing and a common switch voltage.
As shown in fig. 4(a), the relay coil charging circuit in the first charging control circuit is composed of an optical coupler chip BO1 and a peripheral circuit thereof, the model of the second optical coupler chip BO1 is TLP127, the anode of the second optical coupler chip BO1 (i.e. port 1 of BO 1) is connected to a 3.3V dc power supply through an eighth resistor RO5, the cathode of the second optical coupler chip BO1 (i.e. port 3 of BO 1) is connected to a 3.3V logic level through a twenty-seventh resistor R27, the collector of the second optical coupler chip BO1 (i.e. port 6 of BO 1) is connected to a +24V dc power supply, the emitter of the second optical coupler chip BO1 (i.e. port 4 of BO 1) is connected to the anode of an eighteenth VT1, the cathode of the eighteenth diode 1 and the cathode of a nineteenth diode VO1 are connected to one end of a relay coil K6861, the anode of the nineteenth diode BO 586 and the other end of the relay coil A are connected to a knife switch A, which is controlled by a knife switch, such as VO A b, two ends of the knife switch K1D are respectively connected with a power supply end of the first combined separating-gate capacitor charging circuit and a connecting terminal of the output power supply. When the first charging control circuit receives a first charging control instruction sent by the MCU, the logic level accessed at the port No. 3 of the second optocoupler chip BO1 jumps to a low level, the current output at the port No. 4 of the second optocoupler chip BO1 charges the relay coil K1A through the eighteenth diode VT1, the relay coil K1A is electrified, the normally open disconnecting link K1D is closed, the power supply end of the first combined disconnecting link capacitor charging circuit is connected to an output power supply, and when the output power supply cannot normally provide energy for the first combined disconnecting link capacitor, the normal disconnection fault of the circuit breaker can be ensured.
Claims (8)
1. A permanent magnet circuit breaker controller having a master and slave backup drive, comprising:
the MCU sends a first charging control instruction to the first charging control circuit, or sends a second charging control instruction to the second charging control circuit, or sends a first switching-on/off instruction to a main circuit output unit of the permanent magnet driver, or sends a second switching-on/off instruction to a slave circuit output unit of the permanent magnet driver;
the main circuit output unit of the permanent magnet driver comprises a first driving circuit, a first H bridge and a first switching-on/switching-off coil, wherein the input end of the first driving circuit receives a first switching-on/switching-off command, the control end of each IGBT in the first H bridge is connected with the output end of the first driving circuit, and the first switching-on/switching-off coil is connected between the middle points of two bridge arms of the first H bridge;
the permanent magnet driver slave output unit comprises a second drive circuit, a second H bridge and a second switching-on/switching-off coil, wherein the input end of the second drive circuit receives a second switching-on/switching-off command, the control end of each IGBT in the second H bridge is connected with the output end of the second drive circuit, and the second switching-on/switching-off coil is connected between the middle points of two bridge arms of the second H bridge;
the input end of the first charging control circuit receives a first charging control instruction and is connected with the power supply end of the first combined separating brake capacitor charging circuit to an output power supply;
the input end of the second charging control circuit receives a second charging control instruction and is connected with the power supply end of the second combined separating brake capacitor charging circuit to the output power supply;
the power supply end of the first combined switching capacitor charging circuit is connected with an output power supply, and the first combined switching capacitor is connected between the positive and negative polarity terminals of the first H bridge;
the power supply end of the second combined opening capacitor charging circuit is connected with an output power supply, and the second combined opening capacitor is connected between the positive and negative polarity terminals of the second H bridge; and a process for the preparation of a coating,
and the set of power supplies provides output power.
2. A permanent magnet circuit breaker controller with master-slave back-up driver according to claim 1, wherein the first driving circuit is identical in structure to the second driving circuit, the first driving circuit comprising: the driving circuit comprises a first driving unit and a second driving unit, wherein the first driving unit outputs driving signals to upper and lower switching tubes of a first bridge arm of a first H bridge, the second driving unit outputs driving signals to upper and lower switching tubes of a second bridge arm of the first H bridge, the first driving unit and the second driving unit have the same circuit structure, and the first driving unit comprises: the first optical coupling chip and a peripheral circuit thereof, the half-bridge driving chip and a peripheral circuit thereof, wherein the anode of the first optical coupling chip is connected with 3.3V direct current through a seventh resistor, the cathode of the first optical coupling chip receives a first switching-on/off command, the cathode of the first optical coupling chip is connected with one end of a second resistor, the other end of the second resistor is connected with 3.3V direct current, the collector of the first optical coupling chip is connected with a power supply of a main circuit output unit of a permanent magnet driver, the emitter of the first optical coupling chip is connected with one end of a third resistor, the other end of the third resistor is connected with one end of a fifth resistor, the positive plate of a third capacitor and a logic input end of the half-bridge driving chip for controlling the output of upper tube and lower tube driving signals, the other end of the fifth resistor and the negative plate of the third capacitor are all grounded, the power supply end of a lower tube of the half-bridge driving chip, the positive plate of the first capacitor and one end of the first resistor are all connected with the power supply of the output unit of the permanent magnet driver, the other end of the first resistor is connected with the anode of the first diode, the closing output logic input end of the half-bridge driving chip is suspended, the lower tube feedback signal input end of the half-bridge driving chip and the negative plate of the first capacitor are all grounded, the upper tube floating voltage output port of the half-bridge driving chip and the cathode of the first diode are all connected with the positive plate of the second capacitor, the upper tube floating voltage feedback signal input end of the half-bridge driving chip is connected with the negative plate of the second capacitor, the upper tube driving signal output end of the half-bridge driving chip is connected with one end of the fourth resistor, the cathode of the second diode is connected, the other end of the fourth resistor is connected with the anode of the second diode and then used as the output end of the switch driving signal on the first bridge arm, the lower tube driving signal output end of the half-bridge driving chip is connected with one end of the sixth resistor and the cathode of the fourth diode, and the other end of the sixth resistor is connected with the anode of the fourth diode and then used as the output end of the driving signal of the switch tube under the first bridge arm.
3. The controller of claim 2, wherein the first combining and breaking capacitor charging circuit comprises: the negative electrode of the eighth diode and the positive electrode of the twelfth polar tube are connected with the positive electrode plate of the switching-on capacitor, and the negative electrode plate of the switching-off capacitor and the negative electrode plate of the switching-on capacitor are grounded together with the first H bridge.
4. A permanent magnet circuit breaker controller with master-slave backup drives according to claim 3, the charging control circuit is characterized in that the first charging control circuit is a second optical coupler chip and a peripheral circuit thereof, the anode of the second optical coupler chip is connected with 3.3V direct current through an eighth resistor, the cathode of the second optical coupler chip is connected with 3.3V logic level through a twenty-seventh resistor, the collector of the second optical coupler chip is connected with a power supply of the first charging control circuit, the emitter of the second optical coupler chip is connected with the anode of an eighteenth diode, the cathode of the eighteenth diode and the cathode of a nineteenth diode are both connected with one end of a relay coil, the anode of the nineteenth diode and the other end of the relay coil are both connected with the ground of the power supply of the first charging control circuit, and two ends of a knife switch controlled by the relay coil are respectively connected with a power supply end and an output power supply connecting terminal of a first switching-off capacitor charging circuit.
5. The permanent magnet circuit breaker controller with master-slave backup driver as claimed in claim 2, wherein the first optocoupler chip is model IRS 2104.
6. A permanent magnet circuit breaker controller with master-slave back-up drive as claimed in claim 2 wherein the half bridge driver chip is of the type HCPL-181-00 CE.
7. The permanent magnet circuit breaker controller with master-slave backup driver as claimed in claim 4, wherein the model of the second optocoupler chip is TLP 127.
8. The controller of claim 4, wherein the set of power supplies provides a power supply for the main output unit of the permanent magnet driver, a power supply for the secondary output unit of the permanent magnet driver, a power supply for the first charging control circuit, and a power supply for the second charging control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221350317.4U CN217426658U (en) | 2022-05-31 | 2022-05-31 | Permanent magnet circuit breaker controller with master-slave backup driver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221350317.4U CN217426658U (en) | 2022-05-31 | 2022-05-31 | Permanent magnet circuit breaker controller with master-slave backup driver |
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| CN217426658U true CN217426658U (en) | 2022-09-13 |
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| CN202221350317.4U Active CN217426658U (en) | 2022-05-31 | 2022-05-31 | Permanent magnet circuit breaker controller with master-slave backup driver |
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| CN (1) | CN217426658U (en) |
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2022
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