CN111934277A - Shunt regulation isolation diode short-circuit protection control system and method - Google Patents
Shunt regulation isolation diode short-circuit protection control system and method Download PDFInfo
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- CN111934277A CN111934277A CN202010601388.6A CN202010601388A CN111934277A CN 111934277 A CN111934277 A CN 111934277A CN 202010601388 A CN202010601388 A CN 202010601388A CN 111934277 A CN111934277 A CN 111934277A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
A shunt regulation isolation diode short-circuit protection control system and method includes: the first reverse input current sampling circuit is connected with the primary bus; the first bus overcurrent protection comparison circuit is connected with the first reverse input current sampling circuit; the second reverse input current sampling circuit is connected with the first reverse input current sampling circuit; the second bus overcurrent protection comparison circuit is connected with the second reverse input current sampling circuit; a shunt control circuit; a short circuit current sampling circuit; a bus overcurrent locking circuit; a primary bus protection switch and a solar cell array shunt control switch. The invention also provides a short-circuit protection control method for the shunting regulation bulkhead diode, and the control system and the method can provide stable and reliable power supply for the work of other subsystems of the satellite, and prevent the failure of the whole satellite of the satellite caused by the failure of the satellite power supply.
Description
Technical Field
The invention relates to the technical field of aerospace power supply control, in particular to a shunt regulation isolation diode short-circuit protection control system and method.
Background
The solar battery array of the power supply subsystem is a main power supply of a satellite and supplies power for a whole satellite load, the power supply controller is in a main control circuit during an illumination period when the solar battery array shunts the control circuit, and the safe and reliable shunt control circuit can effectively guarantee the stability of a primary bus of a power supply control single machine, ensure the normal power supply of the satellite power supply subsystem and provide reliable energy supply for other analysis.
Along with the increase of the power requirement of the whole satellite of the satellite, the traditional low-voltage platform is difficult to meet the energy requirement, the new platform of high voltage and heavy current of new design has great difference in the aspect of protection design compared with the original platform, the traditional platform generally adopts two diode series connection modes to prevent the short-circuit fault mode of a single diode in the design of a shunt regulation isolation diode, the new platform adopts the single diode design state because of the high voltage and heavy current characteristic, the traditional design state can cause the device to generate heat seriously, the power loss is increased and other conditions, therefore, the new platform adopts the single diode design state, the shunt regulation isolation diode short-circuit protection function under the new state is correctly and reasonably designed, the reliability of a shunt circuit can be effectively improved, and the stability of.
Disclosure of Invention
The invention aims to provide a shunt regulation isolation diode short-circuit protection control system and a shunt regulation isolation diode short-circuit protection control method, so as to solve the problem of how to correctly and reasonably design a solar cell array shunt control short-circuit protection circuit.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a shunt regulator isolation diode short circuit protection control system comprising: the device comprises a shunt control circuit, a drive execution circuit, a solar cell array, a first reverse input current sampling circuit, a first bus overcurrent protection comparison circuit, a second reverse input current sampling circuit, a second bus overcurrent protection comparison circuit, a diode, a power control single-machine primary bus, a first solar cell array shunt control switch, a second solar cell array shunt control switch and a short-circuit current sampling circuit;
the output end of the shunt control circuit is connected with the input end of the drive execution circuit, and the drive execution circuit controls the first solar cell array shunt control switch and the second solar cell array shunt control switch according to the drive signal output by the shunt control circuit;
the solar cell array is connected with the primary bus of the power control single machine through the first reverse input current sampling circuit, the short-circuit current sampling circuit, the diode and the first reverse input current sampling circuit in sequence;
the anode of the diode is connected with the short-circuit current sampling circuit, and the cathode of the diode is connected with the primary bus of the power supply control single machine;
the first reverse input current sampling circuit is connected with a first solar cell array shunt control switch through a first bus overcurrent protection comparison circuit;
the output end of the solar cell array is connected with the second reverse input current sampling circuit through the first solar cell array shunt control switch and the second solar cell array shunt control switch in sequence;
and the second reverse input current sampling circuit is grounded.
Further comprising: a bus overcurrent locking circuit;
and a bus overcurrent locking circuit is connected between the driving execution circuit and the short-circuit current sampling circuit.
When the value of the ground shunt current collected by the short-circuit current sampling circuit is higher than the design threshold value of the bus overcurrent locking circuit, outputting an overcurrent locking signal to the bus overcurrent locking circuit; after receiving the overcurrent locking signal, the bus overcurrent locking circuit outputs a locking signal to the drive execution circuit; the driving execution circuit turns off the first solar cell array shunt control switch and the second solar cell array shunt control switch under the control of the locking signal, and the turn-off of the first solar cell array shunt control switch and the second solar cell array shunt control switch cannot be automatically recovered.
When the diode has continuous short circuit fault, the value of the shunt current to the ground, which is acquired by the short circuit current sampling circuit, is higher than the design threshold value of the bus overcurrent locking circuit.
The first reverse input current sampling circuit is used for collecting reverse short-circuit input current when a transient short-circuit fault occurs in the diode, outputting an overcurrent protection signal 1 through the first bus overcurrent protection comparison circuit and controlling the first solar cell array shunt control switch to be switched off.
The second reverse input current sampling circuit is used for collecting reverse short-circuit input current in a fault mode as an overcurrent protection signal and outputting the overcurrent protection signal to the second bus overcurrent protection comparison circuit when the diode has a transient short-circuit fault, and the second bus overcurrent protection comparison circuit outputs an overcurrent protection signal 2 to control the second solar cell array shunt control switch to be switched off.
A method for carrying out shunt regulation isolation diode short-circuit protection control by utilizing the shunt regulation isolation diode short-circuit protection control system specifically comprises the following steps:
under the normal working state, the first bus overcurrent protection comparison circuit and the second bus overcurrent protection comparison circuit do not output overcurrent protection signals, the first solar cell array shunt control switch and the second solar cell array shunt control switch work normally, the bus overcurrent locking circuit does not output overcurrent locking signals, the driving execution circuit is controlled by the output driving signals of the shunt control circuit, and the solar cell array is in a shunt state or an adjustment state.
A method for carrying out shunt regulation isolation diode short-circuit protection control by utilizing the shunt regulation isolation diode short-circuit protection control system specifically comprises the following steps:
when a transient short-circuit fault occurs in the diode, the first reverse input current sampling circuit and the second reverse input current sampling circuit collect reverse short-circuit input current, an overcurrent protection signal is output through the first bus overcurrent protection comparison circuit and the second bus overcurrent protection comparison circuit, the first solar cell array shunt control switch and the second solar cell array shunt control switch are turned off, the shunt control circuit exits a working sequence, when the fault signal disappears, the overcurrent protection signal disappears, the working states of the first solar cell array shunt control switch and the second solar cell array shunt control switch are controlled by the driving execution circuit, and the solar cell array is in a shunt state or an adjustment state.
A method for carrying out shunt regulation isolation diode short-circuit protection control by utilizing the shunt regulation isolation diode short-circuit protection control system specifically comprises the following steps:
when the diode has a continuous short-circuit fault, the first bus overcurrent protection comparison circuit and the second bus overcurrent protection comparison circuit output overcurrent protection signals, meanwhile, the short-circuit current sampling circuit collects the value of the ground shunt current to meet the design threshold value of the bus overcurrent locking circuit, outputs overcurrent locking signals, drives the execution circuit to be controlled by the locking signals output by the bus overcurrent locking circuit, the first solar cell array shunt control switch and the second solar cell array shunt control switch are turned off and cannot automatically recover, and the shunt control circuit exits from a working sequence.
Compared with the prior art, the invention has the beneficial effects that:
1) according to the shunt regulation isolation diode short-circuit protection control system, circuit design conforming to the isolation protection logic sequence is adopted in the overcurrent protection and overcurrent locking aspects, and the reliability of the shunt circuit of the solar cell array is further improved; the short-circuit protection function of the isolation diode is realized by the analog circuit, the circuit structure is simple and easy to realize, the reliability is high, the defect that the isolation failure of a single diode is adopted in the high-voltage current design of a power supply system is overcome, and the method has important engineering value for the stability management of the primary bus of the power supply control single machine for the satellite.
2) The shunt regulation isolation diode short-circuit protection control method provided by the invention adopts different priority sequences, avoids the possibility of error protection caused by error signals, can realize self-recovery of protection caused by single error signals, can quickly respond to the occurrence of faults, can not cause the short circuit and the loss of the working capacity of a primary bus of a power control single machine due to no protection measures after the short-circuit fault occurs in the isolation diode, can effectively ensure the stability of the primary bus of a power control motor, ensures the normal power supply of a satellite whole satellite power supply system, provides stable and reliable power supply for the work of other subsystems of a satellite, and prevents the failure of the satellite whole satellite caused by the fault of a satellite power supply.
Drawings
Fig. 1 is a schematic circuit structure diagram of a shunt regulation isolation diode short-circuit protection control system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a short-circuit protection control structure of a shunt regulation isolation diode according to the shunt regulation isolation diode short-circuit fault protection provided by the embodiment of the present invention.
Detailed Description
The short-circuit protection control system and the control method for the shunt regulation isolation diode according to the present invention will be further described in detail with reference to the accompanying drawings and the specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise ratio for the purpose of facilitating and distinctly aiding in the description of the embodiments of the invention.
The core idea of the invention is that the shunt regulation isolation diode short-circuit protection control system provided by the invention adopts a circuit design which accords with an isolation protection logic sequence in the aspects of overcurrent protection and overcurrent locking, so that the reliability of the shunt circuit of the solar cell array is further improved; the short-circuit protection function of the isolation diode is realized by the analog circuit, the circuit structure is simple and easy to realize, the reliability is high, the defect that the isolation failure of a single diode is adopted in the high-voltage current design of a power supply system is overcome, and the method has important engineering value for the stability management of the primary bus of the power supply control single machine for the satellite. The shunt regulation isolation diode short-circuit protection control method provided by the invention adopts different priority sequences, avoids the possibility of error protection caused by error signals, can realize self-recovery of protection caused by single error signals, can quickly respond to the occurrence of faults, can not cause the short circuit and the loss of the working capacity of a primary bus of a power control single machine due to no protection measures after the short-circuit fault occurs in the isolation diode, can effectively ensure the stability of the primary bus of a power control motor, ensures the normal power supply of a satellite whole satellite power supply system, provides stable and reliable power supply for the work of other subsystems of a satellite, and prevents the failure of the satellite whole satellite caused by the fault of a satellite power supply.
A shunt regulator isolation diode short circuit protection control system comprising: the system comprises a shunt control circuit 110, a driving execution circuit 111, a solar cell array 112, a first reverse input current sampling circuit 113, a first bus overcurrent protection comparison circuit 114, a second reverse input current sampling circuit 115, a second bus overcurrent protection comparison circuit 116, a diode 117, a power control single-machine primary bus 118, a first solar cell array shunt control switch 119, a second solar cell array shunt control switch 120 and a short-circuit current sampling circuit 121;
the output end of the shunt control circuit 110 is connected to the input end of the driving execution circuit 111, and the driving execution circuit 111 controls the first solar cell array shunt control switch 119 and the second solar cell array shunt control switch 120 according to the driving signal output by the shunt control circuit 110;
the solar cell array 112 is connected with a power control single-machine primary bus 118 through a first reverse input current sampling circuit 113, a short-circuit current sampling circuit 121, a diode 117 in sequence;
the anode of the diode 117 is connected with the short-circuit current sampling circuit 121, and the cathode of the diode 117 is connected with the power supply control single-machine primary bus 118;
the first reverse input current sampling circuit 113 is connected with a first solar cell array shunt control switch 119 through a first bus overcurrent protection comparison circuit 114;
the output end of the solar cell array 112 is connected with the second reverse input current sampling circuit 115 through the first solar cell array shunt control switch 119 and the second solar cell array shunt control switch 120 in sequence;
the second inverting input current sampling circuit 115 processes to ground.
The shunt regulation isolation diode short-circuit protection control system further comprises: a bus overcurrent lockout circuit 122;
a bus overcurrent lock circuit 122 is connected between the drive execution circuit 111 and the short-circuit current sampling circuit 121.
When the value of the ground shunt current collected by the short-circuit current sampling circuit 121 is higher than the design threshold value of the bus overcurrent locking circuit, outputting an overcurrent locking signal to the bus overcurrent locking circuit 122; after receiving the overcurrent locking signal, the bus overcurrent locking circuit 122 outputs a locking signal to the drive execution circuit 111; the driving execution circuit 111 turns off the first solar cell array shunt control switch 119 and the second solar cell array shunt control switch 120 under the control of the locking signal, and the turn-off of the first solar cell array shunt control switch 119 and the second solar cell array shunt control switch 120 cannot be automatically recovered.
When the diode 117 has a continuous short-circuit fault, the value of the shunt current to ground, which is collected by the short-circuit current sampling circuit 121, is higher than the design threshold of the bus overcurrent locking circuit.
The first reverse input current sampling circuit 113 is configured to collect a reverse short-circuit input current when a transient short-circuit fault occurs in the diode 117, and output an overcurrent protection signal 1 through the first bus overcurrent protection comparison circuit 114 to control the first solar cell array shunt control switch 119 to turn off.
The second reverse input current sampling circuit 115 is configured to, when a transient short-circuit fault occurs in the diode 117, collect a reverse short-circuit input current in a fault mode as an overcurrent protection signal and output the overcurrent protection signal to the second bus overcurrent protection comparison circuit 116, where the second bus overcurrent protection comparison circuit 116 outputs an overcurrent protection signal 2 to control the second solar cell array shunt control switch 120 to be turned off.
A method for controlling short-circuit protection of shunt regulation and isolation diodes by using the shunt regulation and isolation diode short-circuit protection control system specifically comprises the following steps:
under a normal working state, the first bus overcurrent protection comparison circuit 114 and the second bus overcurrent protection comparison circuit 116 do not output overcurrent protection signals, the first solar cell array shunt control switch 119 and the second solar cell array shunt control switch 120 both work normally, the bus overcurrent locking circuit 122 does not output overcurrent locking signals, the driving execution circuit 111 is controlled by the output driving signals of the shunt control circuit 110, and the solar cell array 112 is in a shunt state or an adjustment state.
A method for controlling short-circuit protection of shunt regulation and isolation diodes by using the shunt regulation and isolation diode short-circuit protection control system specifically comprises the following steps:
when a transient short-circuit fault occurs in the power control single-machine shunt regulation isolating diode 117, the first reverse input current sampling circuit 113 and the second reverse input current sampling circuit 115 collect reverse short-circuit input current, and output overcurrent protection signals through the first bus overcurrent protection comparison circuit 114 and the second bus overcurrent protection comparison circuit 116, the first solar cell array shunt control switch 119 and the second solar cell array shunt control switch 120 are turned off, the shunt control circuit 110 exits from a working sequence, when the fault signal disappears, the overcurrent protection signal disappears, the working states of the first solar cell array shunt control switch 119 and the second solar cell array shunt control switch 120 are controlled by the driving execution circuit 111, and the solar cell array 112 is in a shunt state or an adjustment state.
A method for controlling short-circuit protection of shunt regulation and isolation diodes by using the shunt regulation and isolation diode short-circuit protection control system specifically comprises the following steps:
when a power control single-machine shunt regulation isolation diode 117 has a continuous short-circuit fault, the first bus overcurrent protection comparison circuit 114 and the second bus overcurrent protection comparison circuit 116 output overcurrent protection signals, meanwhile, the short-circuit current sampling circuit 121 collects the value of the ground shunt current to meet the design threshold of the bus overcurrent locking circuit, outputs overcurrent locking signals, drives the execution circuit 111 to be controlled by the locking signals output by the bus overcurrent locking circuit 122, the first solar cell array shunt control switch 119 and the second solar cell array shunt control switch 120 are turned off and cannot be automatically recovered, and the shunt control circuit 110 exits the working sequence.
Each solar cell array shunt circuit is provided with a shunt regulation isolation diode short-circuit protection control system.
The bus overcurrent protection and overcurrent locking threshold value is adjusted by setting parameters of each element in a first reverse input current sampling circuit 113, a first bus overcurrent protection comparison circuit 114, a second reverse input current sampling circuit 115, a second bus overcurrent protection comparison circuit 116, a short-circuit current sampling circuit 121 and a bus overcurrent locking circuit 122.
Examples
Fig. 1 is a schematic circuit structure diagram of a shunt regulation isolation diode short-circuit protection control system according to an embodiment of the present invention. Referring to fig. 1, an embodiment of the present invention provides a shunt regulation isolation diode short-circuit protection control system, including:
the first reverse input current sampling circuit 113 is used for collecting reverse short-circuit input current in a fault mode as a first-stage overcurrent protection signal; a first bus overcurrent protection comparison circuit 114 connected to the first reverse input current sampling circuit 113; the second reverse input current sampling circuit 115 collects reverse short-circuit input current in a fault mode as a second-stage overcurrent protection signal; a second bus overcurrent protection comparison circuit 116 connected 115 with the second reverse input current sampling circuit; the short-circuit current sampling circuit 121 is used for collecting short-circuit reverse current as a current locking protection signal; a bus overcurrent locking circuit 122 connected between the short-circuit current sampling circuit 121 and the drive execution circuit 111; a drive execution circuit 111 connected to the shunt control circuit 110; and the solar cell array shunt control switches 119 and 120 are connected among the driving execution circuit 111, the second reverse input current sampling circuit 115, the solar cell array 112 and the bus overcurrent protection circuits 114 and 116. The diode 117 has an input terminal connected to the short-circuit current sampling circuit 121 and an output terminal connected to the power control single-machine primary bus 118, and is used as a shunt regulation isolation diode.
And each solar cell array shunt circuit is provided with a shunt regulation isolation diode short-circuit protection control system.
In the embodiment of the present invention, the first reverse input current sampling circuit 113 collects a reverse short-circuit input current in a fault mode through the current transformer as a first stage overcurrent protection signal; the second reverse input current sampling circuit 115 acquires a reverse short-circuit input current in a fault mode through a sampling resistor as a second-stage overcurrent protection signal;
the first bus overcurrent protection comparison circuit 114 is connected with the first reverse input current sampling circuit 113, and is used for comparing a first-stage overcurrent protection signal with a set protection starting threshold value, outputting an overcurrent protection signal 1, and controlling a solar cell array shunt control switch 119;
the second bus overcurrent protection comparison circuit 115 is connected with the second reverse input current sampling circuit 116, and is used for comparing a second-stage overcurrent protection signal with a set protection starting threshold value, outputting an overcurrent protection signal 2, and controlling the shunt control switch 120 of the solar cell array;
the bus overcurrent locking circuit 122 is connected between the short-circuit current sampling circuit 121 and the drive execution circuit 111, collects a short-circuit current value through a current transformer, ensures the final protection situation of bus overcurrent locking, and outputs an overcurrent locking protection signal when a condition meeting a set bus overcurrent locking protection threshold value is received;
the drive execution circuit 111 controls the on/off of the solar cell array shunt control switches 119 and 120 according to the received drive signal.
The embodiment of the invention also provides a short-circuit protection control method for the shunt regulation isolation diode, which comprises the following steps: the method comprises the steps that parameters of all elements in a first reverse input current sampling circuit, a first bus overcurrent protection comparison circuit, a second reverse input current sampling circuit, a second bus overcurrent protection comparison circuit, a short-circuit current sampling circuit and a bus overcurrent locking circuit are set, and a bus overcurrent protection and overcurrent locking threshold value is adjusted; after the power supply control single machine has the short-circuit fault of the isolation diode, the protection circuit can be quickly started to protect the primary bus of the control single machine from being normal;
under the normal working state, the diode 117 is not short-circuited, the first reverse input current sampling circuit 113 does not collect reverse short-circuit current, the first-stage overcurrent protection signal is low, the first bus overcurrent protection comparison circuit 114 is not executed, no overcurrent protection signal is output, and the solar cell array shunt control switch 119 is controlled by the driving execution circuit 111; the second reverse input current sampling circuit 115 does not collect reverse short-circuit current, the second-stage overcurrent protection signal is low, the first bus overcurrent protection comparison circuit 116 is not executed, and no overcurrent protection signal is output, and the solar cell array shunt control switch 120 is controlled by the driving execution circuit 111; the driving execution circuit 111 is controlled by the driving signal output by the shunt control circuit 110, and the solar cell array is in a shunt state or an adjustment state;
fig. 2 is a schematic structural diagram of a short-circuit protection control system of a shunt regulation isolation diode according to the embodiment of the present invention. Referring to fig. 2, when a short-circuit fault occurs in a diode 117, a primary bus of a power control unit is short-circuited to the ground, a first reverse input current sampling circuit 113 collects a reverse short-circuit current and outputs a first stage overcurrent protection signal, a first bus overcurrent protection comparison circuit 114 receives the first stage overcurrent protection signal and then compares the signal with a set protection threshold value, when the signal is higher than the set protection threshold value, an overcurrent protection signal is output to execute a related protection circuit and control a solar cell array shunt control switch 119 to be turned off, a second reverse input current sampling circuit 115 collects the reverse short-circuit current and outputs a second stage overcurrent protection signal, when the signal is received by a second bus overcurrent protection comparison circuit 116 and then compares the signal with the set protection threshold value, when the signal is higher than the set protection threshold value, an overcurrent protection signal is output to execute a related protection circuit and control a solar cell array shunt control switch 120 to be turned, the second bus overcurrent protection comparison circuit 116 sets a protection threshold slightly higher than the protection threshold set by the first bus overcurrent protection comparison circuit 114, two sets of independent protection mechanisms can be formed, short-circuit reverse current disappears after the solar cell array shunt control switches 119 and 120 are turned off, normal working state circuit logic is recovered, fault protection caused by error signals can be recovered, the possibility of error protection caused by error signals is avoided, if bus short-circuit faults exist continuously, the short-circuit current sampling circuit 121 acquires short-circuit direction current values and outputs short-circuit current signals to the bus overcurrent locking circuit 122, when the short-circuit current signal is higher than the set locking threshold value of the bus overcurrent locking circuit 122, an overcurrent locking protection signal is generated and sent to the driving execution circuit 111, the driving execution circuit is locked, the solar cell array shunt control switches 119 and 120 are turned off, and the bus locking cannot be recovered.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A shunt regulation isolation diode short-circuit protection control system is characterized by comprising: the device comprises a shunt control circuit (110), a driving execution circuit (111), a solar cell array (112), a first reverse input current sampling circuit (113), a first bus overcurrent protection comparison circuit (114), a second reverse input current sampling circuit (115), a second bus overcurrent protection comparison circuit (116), a diode (117), a power control single machine primary bus (118), a first solar cell array shunt control switch (119), a second solar cell array shunt control switch (120) and a short-circuit current sampling circuit (121);
the output end of the shunt control circuit (110) is connected with the input end of the drive execution circuit (111), and the drive execution circuit (111) controls the first solar cell array shunt control switch (119) and the second solar cell array shunt control switch (120) according to a drive signal output by the shunt control circuit (110);
the solar cell array (112) is connected with a power control single-machine primary bus (118) through a first reverse input current sampling circuit (113), a short-circuit current sampling circuit (121) and a diode (117) in sequence;
the anode of the diode (117) is connected with the short-circuit current sampling circuit (121), and the cathode of the diode (117) is connected with the power supply control single-machine primary bus (118);
the first reverse input current sampling circuit (113) is connected with a first solar cell array shunt control switch (119) through a first bus overcurrent protection comparison circuit (114);
the output end of the solar cell array (112) is connected with a second reverse input current sampling circuit (115) through a first solar cell array shunt control switch (119) and a second solar cell array shunt control switch (120) in sequence;
the second inverting input current sampling circuit (115) is grounded.
2. The shunt regulator isolated diode short circuit protection control system of claim 1, further comprising: a bus over-current lockout circuit (122);
a bus overcurrent locking circuit (122) is connected between the drive execution circuit (111) and the short-circuit current sampling circuit (121).
3. The shunt regulation isolation diode short-circuit protection control system of claim 2, wherein when the value of the shunt current to ground, which is collected by the short-circuit current sampling circuit (121), is higher than a design threshold value of the bus overcurrent locking circuit, an overcurrent locking signal is output to the bus overcurrent locking circuit (122); after receiving the overcurrent locking signal, the bus overcurrent locking circuit (122) outputs a locking signal to the drive execution circuit (111); the driving execution circuit (111) turns off the first solar cell array shunt control switch (119) and the second solar cell array shunt control switch (120) under the control of the locking signal, and the turning-off of the first solar cell array shunt control switch (119) and the second solar cell array shunt control switch (120) cannot be automatically recovered.
4. The shunt regulator isolation diode short-circuit protection control system of claim 3, wherein when the diode (117) has a continuous short-circuit fault, the shunt current value to ground collected by the short-circuit current sampling circuit (121) is higher than a design threshold of the bus overcurrent locking circuit.
5. The shunt regulation isolation diode short-circuit protection control system of claim 1 or 2, wherein the first reverse input current sampling circuit (113) is configured to collect a reverse short-circuit input current when a transient short-circuit fault occurs in the diode (117), and output an overcurrent protection signal 1 through the first bus overcurrent protection comparison circuit (114) to control the first solar cell array shunt control switch (119) to turn off.
6. The shunt regulation isolation diode short-circuit protection control system of claim 1 or 2, wherein the second reverse input current sampling circuit (115) is configured to collect a reverse short-circuit input current in a fault mode as an overcurrent protection signal and output the overcurrent protection signal to the second bus overcurrent protection comparison circuit (116) when a transient short-circuit fault occurs in the diode (117), and the second bus overcurrent protection comparison circuit (116) outputs the overcurrent protection signal 2 to control the second solar cell array shunt control switch (120) to be turned off.
7. A method for shunt regulation isolation diode short-circuit protection control using the shunt regulation isolation diode short-circuit protection control system of claim 2, wherein:
under the normal working state, the first bus overcurrent protection comparison circuit (114) and the second bus overcurrent protection comparison circuit (116) do not output overcurrent protection signals, the first solar cell array shunt control switch (119) and the second solar cell array shunt control switch (120) both work normally, the bus overcurrent locking circuit (122) does not output overcurrent locking signals, the driving execution circuit (111) is controlled by the output driving signals of the shunt control circuit (110), and the solar cell array (112) is in a shunt state or an adjustment state.
8. A method for shunt regulation isolation diode short-circuit protection control using the shunt regulation isolation diode short-circuit protection control system of claim 7, wherein:
when a transient short-circuit fault occurs in the diode (117), a first reverse input current sampling circuit (113) and a second reverse input current sampling circuit (115) collect reverse short-circuit input current, an overcurrent protection signal is output through a first bus overcurrent protection comparison circuit (114) and a second bus overcurrent protection comparison circuit (116), a first solar cell array shunt control switch (119) and a second solar cell array shunt control switch (120) are turned off, a shunt control circuit (110) quits a working sequence, when the fault signal disappears, the overcurrent protection signal disappears, the working states of the first solar cell array shunt control switch (119) and the second solar cell array shunt control switch (120) are controlled by a driving execution circuit (111), and the solar cell array (112) is in a shunt state or an adjustment state.
9. A method for shunt regulation isolation diode short-circuit protection control using the shunt regulation isolation diode short-circuit protection control system of claim 7, wherein:
when a continuous short-circuit fault occurs in the diode (117), the first bus overcurrent protection comparison circuit (114) and the second bus overcurrent protection comparison circuit (116) output overcurrent protection signals, meanwhile, the short-circuit current sampling circuit (121) collects a ground shunt current value to meet a design threshold of a bus overcurrent locking circuit, an overcurrent locking signal is output, the driving execution circuit (111) is controlled by the locking signal output by the bus overcurrent locking circuit (122), the first solar cell array shunt control switch (119) and the second solar cell array shunt control switch (120) are turned off and cannot be automatically recovered, and the shunt control circuit (110) exits a work sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010601388.6A CN111934277B (en) | 2020-06-28 | 2020-06-28 | Shunt regulation isolation diode short-circuit protection control system and method |
Applications Claiming Priority (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751321A (en) * | 2020-12-25 | 2021-05-04 | 深圳市航天新源科技有限公司 | Protection circuit, method and power supply controller |
| CN113141105A (en) * | 2021-04-25 | 2021-07-20 | 深圳市优优绿能电气有限公司 | Output protection method and device of rectifier module |
| CN113141004A (en) * | 2021-04-09 | 2021-07-20 | 长光卫星技术有限公司 | Moonlet autonomous power-on circuit and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917043A (en) * | 2010-08-19 | 2010-12-15 | 中国电子科技集团公司第十八研究所 | Lithium-ion battery charge-discharge control circuit |
| CN103973277A (en) * | 2013-02-05 | 2014-08-06 | 通用电气公司 | Short circuit protection circuit and method for insulated gate bipolar transistor |
| CN206524820U (en) * | 2016-12-07 | 2017-09-26 | 上海禹超电气有限公司 | A kind of IGBT tube short circuits protection circuit |
| CN107959279A (en) * | 2017-11-29 | 2018-04-24 | 上海空间电源研究所 | A kind of solar battery array soft-start control system and its control method |
-
2020
- 2020-06-28 CN CN202010601388.6A patent/CN111934277B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917043A (en) * | 2010-08-19 | 2010-12-15 | 中国电子科技集团公司第十八研究所 | Lithium-ion battery charge-discharge control circuit |
| CN103973277A (en) * | 2013-02-05 | 2014-08-06 | 通用电气公司 | Short circuit protection circuit and method for insulated gate bipolar transistor |
| CN206524820U (en) * | 2016-12-07 | 2017-09-26 | 上海禹超电气有限公司 | A kind of IGBT tube short circuits protection circuit |
| CN107959279A (en) * | 2017-11-29 | 2018-04-24 | 上海空间电源研究所 | A kind of solar battery array soft-start control system and its control method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751321A (en) * | 2020-12-25 | 2021-05-04 | 深圳市航天新源科技有限公司 | Protection circuit, method and power supply controller |
| CN113141004A (en) * | 2021-04-09 | 2021-07-20 | 长光卫星技术有限公司 | Moonlet autonomous power-on circuit and control method thereof |
| CN113141004B (en) * | 2021-04-09 | 2023-05-23 | 长光卫星技术股份有限公司 | Automatic power-up circuit of small satellite and control method thereof |
| CN113141105A (en) * | 2021-04-25 | 2021-07-20 | 深圳市优优绿能电气有限公司 | Output protection method and device of rectifier module |
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| CN111934277B (en) | 2022-07-29 |
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