CN111954361A - Integrated power supply circuit and power supply method for tethered satellite hollow cathode - Google Patents
Integrated power supply circuit and power supply method for tethered satellite hollow cathode Download PDFInfo
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- CN111954361A CN111954361A CN202010819878.3A CN202010819878A CN111954361A CN 111954361 A CN111954361 A CN 111954361A CN 202010819878 A CN202010819878 A CN 202010819878A CN 111954361 A CN111954361 A CN 111954361A
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Abstract
The invention discloses an integrated power supply circuit and a power supply method of a tethered satellite hollow cathode, and relates to an integrated power supply circuit structure for supplying power to the tethered satellite hollow cathode. The invention reduces the power supply loop of the hollow cathode from a plurality of power supplies to one power supply by externally connecting the same 42V direct current power supply, greatly lightens the quality and the volume of the power supply loop of the hollow cathode, simplifies the complexity of the power supply loop of the hollow cathode and improves the ignition reliability of the hollow cathode. The invention is mainly used for supplying power to the hollow cathode.
Description
Technical Field
The invention relates to an integrated power supply circuit structure for supplying power to a tethered satellite hollow cathode.
Background
The hollow cathode is a core component of the plasma contactor. The plasma contactor is used for controlling the space potential of an aircraft and mainly comprises a hollow cathode, a power supply and a storage and supply device. Under the background requirement that a tethered satellite needs a hollow cathode with the current range of 0-15A to serve as a potential controller and a power supply and storage unit work independently, the development of a device integrating the hollow cathode and a power supply system is very important.
The power supply used by space electric propulsion has high requirements on power density, efficiency and dynamic response speed, the ignition of the existing hollow cathode usually consists of an ignition power supply, a heating power supply and an anode power supply, the quality of the whole power supply system is overweight due to the large volume of each power supply, and the reliability of the system is also reduced due to the complex structure of the whole power supply system caused by the large volume, so the problems need to be solved urgently, and the hollow cathode power supply loop with simple structure and small volume needs to be provided urgently.
Disclosure of Invention
The invention aims to solve the problems that the ignition of the existing hollow cathode usually consists of an ignition power supply, a heating power supply and an anode power supply, and the ignition reliability of the cathode is reduced due to the overweight of the whole power supply system and the complex system structure caused by the large volume of the three power supplies. The invention provides an integrated power supply circuit and a power supply method for a tethered satellite hollow cathode.
The following specific structures of the integrated power supply circuit of the tethered satellite hollow cathode are provided:
the first structure is as follows:
the integrated power supply circuit of the tethered satellite hollow cathode is used for supplying power to the hollow cathode and the anode plate, and comprises a 42V direct-current power supply, an ignition module, a heating module and an anode module;
the 42V direct-current power supply is used for supplying power to the ignition module, the heating module and the anode module, the positive electrode of the 42V direct-current power supply is connected with the power supply input ends of the ignition module, the heating module and the anode module at the same time, and the negative electrode of the 42V direct-current power supply is connected with the cathode tube of the hollow cathode;
the power supply output end of the ignition module is connected with the touch and hold electrode of the hollow cathode;
the power supply output end of the heating module is connected with the power supply end of the heater of the hollow cathode;
the power supply output end of the anode module is connected with the anode plate;
the ignition module and the anode module are used for performing boost conversion on 42V direct current output by a 42V direct current power supply, the ignition module is used for boosting the 42V direct current to 100V, and the anode module is used for boosting the 42V direct current to 50V;
and the heating module is used for carrying out voltage reduction conversion on the 42V direct current output by the 42V direct current power supply and reducing the 42V direct current to 20V.
Preferably, the ignition module, the heating module and the anode module are integrated on the same circuit board.
Preferably, the ignition module is implemented by adopting a circuit of a push-pull boost topology structure, a flyback topology structure or a half-bridge topology structure;
the anode module is realized by adopting a circuit with a boost topological structure;
the heating module is realized by adopting a circuit with a voltage reduction topological structure.
The second structure is as follows:
the integrated power supply circuit of the tethered satellite hollow cathode is used for supplying power to the hollow cathode and the anode plate, and comprises a 42V direct-current power supply, an ignition module, a heating-anode module and a relay;
the 42V direct-current power supply is used for supplying power to the ignition module and the heating-anode module, the positive electrode of the 42V direct-current power supply is connected with the power supply input ends of the ignition module and the heating-anode module, and the negative electrode of the 42V direct-current power supply is connected with the cathode tube of the hollow cathode;
the power supply output end of the ignition module is connected with the touch and hold electrode of the hollow cathode;
the power supply output end of the heating-anode module is connected with the input end of the relay;
the first power supply output end of the relay is connected with the power supply end of the heater of the hollow cathode, and the second power supply output end of the relay is connected with the anode plate;
the ignition module and the heating-anode module are used for boosting and converting 42V direct current output by a 42V direct current power supply, the ignition module is used for boosting the 42V direct current to 100V, and the heating-anode module is used for boosting the 42V direct current to 50V.
Preferably, the ignition module and the heater-anode module are integrated on the same circuit board.
Preferably, the ignition module is implemented by adopting a circuit of a push-pull boost topology structure, a flyback topology structure or a half-bridge topology structure;
the heating-anode module is realized by adopting a circuit with a boost topological structure.
A third structure:
the integrated power supply circuit of the tethered satellite hollow cathode is used for supplying power to the hollow cathode and the anode plate, and comprises a 42V direct-current power supply, a heating-anode module and a relay;
the 42V direct-current power supply is used for supplying power to the heating-anode module, the anode of the 42V direct-current power supply is connected with the power supply input end of the heating-anode module, and the cathode of the 42V direct-current power supply is connected with the cathode tube of the hollow cathode;
the power supply output end of the heating-anode module is connected with the input end of the relay;
the first power supply output end of the relay is connected with the power supply end of the heater of the hollow cathode, and the second power supply output end of the relay is connected with the anode plate;
and the heating-anode module is used for performing boost conversion on the 42V direct current output by the 42V direct current power supply and boosting the 42V direct current to 50V.
Preferably, the heating-anode module is implemented using a circuit of a boost topology.
Preferably, in the integrated power supply circuit of the tethered satellite hollow cathode with the three structures, the circuits with all topological structures are subjected to current closed-loop control.
The power supply method is realized by adopting the integrated power supply circuit of the tethered satellite hollow cathode with the first structure, and comprises the following processes:
step one, simultaneously starting an ignition module and a heating module, and introducing xenon into a hollow cathode; the ignition module boosts the electric energy output by the 42V direct-current power supply, supplies power to the touch and hold electrode of the hollow cathode, and simultaneously, under the continuous heating of the heating module on the heater, when the temperature of an emitter of the hollow cathode reaches a preset temperature, the high potential difference between the touch and hold electrode of the hollow cathode and the cathode top plate of the hollow cathode enables gas between the touch and hold electrode and the cathode top plate to be broken down, and at the moment, the hollow cathode is ignited successfully;
step two, after the gas between the touch electrode and the cathode top plate is broken down, the anode module starts to work, and boosts the electric energy output by the 42V direct current power supply and supplies power to the anode plate, at the moment, electrons of the emitter are led out by the anode plate, and the hollow cathode starts large-current steady-state discharge under the condition of continuous power supply of the anode plate, so that the continuous conduction of a power supply loop is realized;
the large current is a current larger than 4A and smaller than 15A, and the high potential difference is a voltage difference of which the potential difference is larger than or equal to 100V.
The power supply method is realized by adopting the integrated power supply circuit of the tethered satellite hollow cathode with the second structure, and is characterized by comprising the following steps of:
the method comprises the following steps: starting the ignition module and the anode-heating module at the same time at the time of t0, and introducing xenon into the hollow cathode; controlling the anode-heating module to heat the heater through a relay, and under the continuous heating of the anode-heating module to the heater, when the temperature of an emitter of the hollow cathode reaches a preset temperature, enabling a high potential difference between a touch pole of the hollow cathode and a cathode top plate of the hollow cathode, so that gas between the touch pole and the cathode top plate is broken down, wherein at the moment, the hollow cathode is successfully ignited, and the moment when the ignition is successful is t 1;
step two: after the hollow cathode is ignited successfully at the time t1, the relay controls the anode-heating module to stop heating the heater, so that the anode-heating module starts to supply power to the anode plate, the anode-heating module boosts the electric energy output by the 42V direct-current power supply and then supplies power to the anode plate continuously, the anode-heating module is closed at the time t2, so that the anode-heating module stops supplying power to the anode plate, the anode plate starts to discharge large current stably, and a power supply loop is conducted;
wherein t2> t1, the large current is a current larger than 4A and smaller than 15A, and the high potential difference is a voltage difference of which the potential difference is larger than or equal to 100V.
Another power supply method implemented by using the integrated power supply circuit of the tethered satellite hollow cathode of the second structure is characterized by comprising the following steps:
the method comprises the following steps: starting the ignition module and the anode-heating module at the same time at the time of t0, and introducing xenon into the hollow cathode; controlling the anode-heating module to heat the heater through a relay, and under the continuous heating of the anode-heating module to the heater, when the temperature of an emitter of the hollow cathode reaches a preset temperature, enabling a high potential difference between a touch pole of the hollow cathode and a cathode top plate of the hollow cathode, so that gas between the touch pole and the cathode top plate is broken down, wherein at the moment, the hollow cathode is successfully ignited, and the moment when the ignition is successful is t 1;
step two, after the hollow cathode is ignited successfully at the time of t1, the anode-heating module continues to heat the heater until the time of t2, the anode-heating module is controlled by a relay to stop heating the heater at the time of t2, so that the anode-heating module starts to supply power to the anode plate, the anode-heating module boosts the electric energy output by the 42V direct-current power supply and then continuously supplies power to the anode plate, the anode-heating module is controlled to stop supplying power to the anode plate at the time of t3, at the moment, electrons of the emitter are led out by the anode plate, the hollow cathode starts large-current steady-state discharge, and continuous conduction of a power supply loop;
wherein t2> t1, the large current is a current larger than 4A and smaller than 15A, and the high potential difference is a voltage difference of which the potential difference is larger than or equal to 100V.
The power supply method is realized by adopting the integrated power supply circuit of the tethered satellite hollow cathode with the third structure, and comprises the following processes:
the method comprises the following steps: starting the anode-heating module at the time t0, and introducing xenon into the hollow cathode; controlling the anode-heating module to heat the heater through a relay, and under the continuous heating of the anode-heating module to the heater, when the temperature of an emitter of the hollow cathode reaches a preset temperature, enabling a high potential difference between a touch pole of the hollow cathode and a cathode top plate of the hollow cathode, so that gas between the touch pole and the cathode top plate is broken down, wherein at the moment, the hollow cathode is successfully ignited, and the moment when the ignition is successful is t 1;
step two: at t1, after the hollow cathode is ignited successfully, the relay controls the anode-heating module to stop heating the heater, so that the anode-heating module starts to supply power to the anode plate, the anode-heating module boosts the electric energy output by the 42V direct-current power supply and then supplies power to the anode plate continuously, at the moment, electrons of the emitter are led out of the anode plate, and the hollow cathode starts large-current steady-state discharge under the condition of continuous power supply of the anode plate, so that the continuous conduction of a power supply loop is realized;
wherein t2> t1, the large current is a current larger than 4A and smaller than 15A, and the high potential difference is a voltage difference of which the potential difference is larger than or equal to 100V.
The invention has the following beneficial effects: the power supply loop of the hollow cathode is reduced to one power supply from a plurality of power supplies through externally connecting the 42V direct-current power supply with the same input voltage, so that the quality and the volume of the power supply loop of the hollow cathode are greatly reduced, the complexity of the power supply loop of the hollow cathode is simplified, and the ignition reliability of the hollow cathode is improved.
The 42V direct-current power supply used by the invention has small volume, simple structure and high reliability, and the hollow cathode can be started only by one power supply, so that the cathode power supply integration method of the single power supply external power supply module is provided. The ignition module has higher requirement on instant response but lower requirement on output power, only tens of watts is needed to start the cathode in application, and the lower power can effectively reduce the volume of the ignition module. The anode module is the most electric energy consuming module in the whole system, enough input power and good heat dissipation design must be ensured, the power of the heating module is about 100W, and the discharge process during heating is similar to anode discharge and is high-current constant-current discharge.
Drawings
FIG. 1 is a schematic diagram of a conventional hollow cathode power supply circuit;
FIG. 2 is a schematic diagram of a first structure of an integrated power supply circuit of a tethered satellite hollow cathode;
FIG. 3 is a schematic diagram of a second structure of the integrated power supply circuit of the tethered satellite hollow cathode; FIG. 4 is a schematic diagram of a third structure of an integrated power supply circuit of a tethered satellite hollow cathode;
fig. 5 is a timing diagram of the power supply of the hollow cathode 1 by a power supply method to the integrated power supply circuit of the tethered satellite hollow cathode of the second configuration;
fig. 6 is a timing diagram of the power supply of the hollow cathode 1 by another power supply method to the integrated power supply circuit of the tethered satellite hollow cathode of the second structure;
fig. 7 is a timing diagram of the power supply to the hollow cathode 1 by the integrated power supply circuit of the tethered satellite hollow cathode of the third configuration;
in fig. 1 to 7, reference numeral 1 is a hollow cathode, reference numeral 1-1 is a cathode tube of the hollow cathode, reference numeral 1-2 is a contact electrode of the hollow cathode, reference numeral 1-3 is a heater of the hollow cathode, reference numeral 1-4 is an emitter of the hollow cathode, reference numeral 1-5 is a cathode top plate of the hollow cathode, reference numeral 1-6 is a cathode hole of the hollow cathode, and reference numeral 1-7 is a heat shield of the hollow cathode.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
A first structure of an integrated power supply circuit of a tethered satellite hollow cathode, specifically see fig. 2:
referring to fig. 2, the integrated power supply circuit of the tethered satellite hollow cathode according to the present embodiment is described, the integrated power supply circuit is used for supplying power to the hollow cathode 1 and the anode plate 2, and the integrated power supply circuit includes a 42V dc power supply 3, an ignition module, a heating module and an anode module;
the 42V direct current power supply 3 is used for supplying power to the ignition module, the heating module and the anode module, the positive electrode of the 42V direct current power supply 3 is simultaneously connected with the power supply input ends of the ignition module, the heating module and the anode module, and the negative electrode of the 42V direct current power supply 3 is connected with the cathode tube 1-1 of the hollow cathode 1;
the power supply output end of the ignition module is connected with a touch electrode 1-2 of the hollow cathode 1;
the power supply output end of the heating module is connected with the power supply ends of the heaters 1-3 of the hollow cathode 1;
the power supply output end of the anode module is connected with the anode plate 2;
the ignition module and the anode module are used for performing boost conversion on 42V direct current output by the 42V direct current power supply 3, the ignition module is used for boosting the 42V direct current to 100V, and the anode module is used for boosting the 42V direct current to 50V;
and the heating module is used for carrying out voltage reduction conversion on the 42V direct current output by the 42V direct current power supply 3 and reducing the 42V direct current to 20V.
In the embodiment, a power supply source is integrated in a form of three modules and a 42V direct-current power supply, the integrated power supply source only comprises the 42V direct-current power supply, a power supply loop of the hollow cathode is reduced from a plurality of power supply sources to one power supply source for power supply, the number, the volume and the quality of the power supplies used for ignition of the hollow cathode in the prior art are reduced, the complexity of the power supply loop of the hollow cathode is simplified, and the ignition reliability of the hollow cathode is improved.
The ignition module has higher requirement on instant response but lower requirement on output power, only tens of watts is needed to start the cathode in application, and the lower power can effectively reduce the volume of the ignition module. The anode module is the most electric energy consuming device in the whole system, so the module is used as a high-power module, sufficient input power and good heat dissipation design must be ensured when the system is designed, the power of the heating module is about 100W, and the heating process and the anode discharge are similar and are constant-current discharge.
Further, the ignition module, the heating module and the anode module are integrated on the same circuit board.
In the preferred embodiment, the ignition module, the heating module and the anode module are integrated on the same circuit board, so that the volume of the integrated power supply circuit of the tethered satellite hollow cathode is further reduced.
Furthermore, the ignition module is realized by adopting a circuit of a push-pull boosting topological structure, a flyback topological structure or a half-bridge topological structure;
the anode module is realized by adopting a circuit with a boost topological structure;
the heating module is realized by adopting a circuit with a voltage reduction topological structure.
In the preferred embodiment, the boost topology is a basic boost topology, is a non-isolated circuit topology, and is suitable for high-power and high-current output, while the push-pull boost topology, the flyback topology and the half-bridge topology are isolated topologies, and are suitable for high-voltage and low-current. Because the output voltage of the ignition module is overhigh and can generally reach 100V, the isolation is needed, and therefore, only push-pull boosting or isolation topologies such as flyback topology and half-bridge topology can be used.
A second structure of the integrated power supply circuit of the tethered satellite hollow cathode is specifically shown in fig. 3:
referring to fig. 3, the embodiment is described, the integrated power supply circuit of tethered satellite air cathode according to the embodiment is used for supplying power to the air cathode 1 and the anode plate 2,
the integrated power supply circuit comprises a 42V direct-current power supply 3, an ignition module, a heating-anode module and a relay;
the 42V direct-current power supply 3 is used for supplying power to the ignition module and the heating-anode module, the positive electrode of the 42V direct-current power supply 3 is connected with the power supply input ends of the ignition module and the heating-anode module at the same time, and the negative electrode of the 42V direct-current power supply 3 is connected with the cathode tube 1-1 of the hollow cathode 1;
the power supply output end of the ignition module is connected with a touch electrode 1-2 of the hollow cathode 1;
the power supply output end of the heating-anode module is connected with the input end of the relay;
the first power supply output end of the relay is connected with the power supply ends of the heaters 1-3 of the hollow cathode 1, and the second power supply output end of the relay is connected with the anode plate 2;
the ignition module and the heating-anode module are used for performing boost conversion on 42V direct current output by the 42V direct current power supply 3, the ignition module is used for boosting the 42V direct current to 100V, and the heating-anode module is used for boosting the 42V direct current to 50V.
In the embodiment, a power supply source is integrated in a form of two modules and a 42V direct-current power supply, the integrated power supply source only comprises the 42V direct-current power supply, a power supply loop of the hollow cathode is reduced from a plurality of power supply sources to one power supply source for power supply, the number, the volume and the quality of the power supplies used for ignition of the hollow cathode in the prior art are reduced, the complexity of the power supply loop of the hollow cathode is simplified, and the ignition reliability of the hollow cathode is improved. The power supply loop is controlled by a relay.
The ignition module has higher requirement on instant response but lower requirement on output power, only tens of watts is needed to start the cathode in application, and the lower power can effectively reduce the volume of the ignition module. The heating-anode module is the most power consuming device in the whole system, so the module is used as a high-power module, sufficient input power and good heat dissipation design must be ensured when the system is designed, the power of the heating-anode module is about 100W, and the heating process is similar to anode discharge and is constant-current discharge.
Further, the ignition module and the heater-anode module are integrated on the same circuit board.
In the preferred embodiment, the ignition module and the heating-anode module are integrated on the same circuit board, so that the volume of the integrated power supply circuit of the tethered satellite hollow cathode is further reduced.
Furthermore, the ignition module is realized by adopting a circuit of a push-pull boosting topological structure, a flyback topological structure or a half-bridge topological structure;
the heating-anode module is realized by adopting a circuit with a boost topological structure.
In the preferred embodiment, the boost topology is a basic boost topology, is a non-isolated circuit topology, and is suitable for outputting large power and large current, and the push-pull boost topology, the flyback topology, and the half-bridge topology are isolated topologies, and are suitable for high-voltage and low-current. Because the output voltage of the ignition module is overhigh and can generally reach 100V, the isolation is needed, and therefore, only push-pull boosting or isolation topologies such as flyback topology and half-bridge topology can be used.
The third structure of the integrated power supply circuit of the tethered satellite hollow cathode is specifically shown in fig. 4:
referring to fig. 4, the embodiment is described, the integrated power supply circuit of the tethered satellite hollow cathode is used for supplying power to the hollow cathode 1 and the anode plate 2, and comprises a 42V direct-current power supply 3, a heating-anode module and a relay;
the 42V direct current power supply 3 is used for supplying power to the heating-anode module, the anode of the 42V direct current power supply 3 is connected with the power supply input end of the heating-anode module, and the cathode of the 42V direct current power supply 3 is connected with the cathode tube 1-1 of the hollow cathode 1;
the power supply output end of the heating-anode module is connected with the input end of the relay;
the first power supply output end of the relay is connected with the power supply ends of the heaters 1-3 of the hollow cathode 1, and the second power supply output end of the relay is connected with the anode plate 2;
and the heating-anode module is used for performing boost conversion on the 42V direct current output by the 42V direct current power supply 3 and boosting the 42V direct current to 50V.
In the embodiment, a power supply source is integrated in a form of 'one module + one 42V direct current power supply', the integrated power supply source only comprises one 42V direct current power supply, a power supply loop of the hollow cathode is reduced from a plurality of power supply sources to one power supply source for power supply, the number, the volume and the quality of the power supplies used for ignition of the hollow cathode in the prior art are reduced, the complexity of the power supply loop of the hollow cathode is simplified, and the reliability of ignition of the hollow cathode is improved.
The heating-anode module is the most power consuming device in the whole system, so the module is used as a high-power module, sufficient input power and good heat dissipation design must be ensured when the system is designed, the power of the heating-anode module is about 100W, and the heating process is similar to anode discharge and is constant-current discharge.
Further, the heating-anode module is realized by adopting a circuit with a boost topology structure.
Furthermore, in the integrated power supply circuit of the three tethered satellite hollow cathodes, all circuits with topological structures are subjected to current closed-loop control.
In the preferred embodiment, the current closed-loop control has the advantages that firstly, the power supply module is protected from being burnt due to excessive current; and the second is beneficial to the discharge stability of the hollow cathode 1.
The power supply method is realized by adopting the integrated power supply circuit of the tethered satellite hollow cathode, and comprises the following steps:
step one, simultaneously starting an ignition module and a heating module, and introducing xenon into a hollow cathode 1; after boosting the electric energy output by the 42V direct-current power supply 3, the ignition module supplies power to the touch electrode 1-2 of the hollow cathode 1, and meanwhile, under the continuous heating of the heating module on the heater 1-3, when the temperature of the emitter 1-4 of the hollow cathode 1 reaches the preset temperature, the high potential difference between the touch electrode 1-2 of the hollow cathode 1 and the cathode top plate 1-5 thereof enables the gas between the touch electrode 1-2 and the cathode top plate 1-5 to be broken down, and at the moment, the hollow cathode 1 is successfully ignited;
step two, after the gas between the touch electrode 1-2 and the cathode top plate 1-5 is broken down, the anode module starts to work, and the electric energy output by the 42V direct current power supply 3 is boosted to supply power to the anode plate 2, at the moment, electrons of the emitter 1-4 are led out by the anode plate 2, and the hollow cathode 1 starts large-current steady-state discharge under the condition of continuous power supply of the anode plate 2, so that the continuous conduction of a power supply loop is realized;
the large current is a current larger than 4A and smaller than 15A, and the high potential difference is a voltage difference of which the potential difference is larger than or equal to 100V.
In this embodiment, the predetermined temperature is a temperature greater than 1200 ℃.
Referring to fig. 3 and 5, the present embodiment is described, and the present embodiment adopts a power supply method implemented by the integrated power supply circuit of the tethered satellite air cathode according to the second structure, and is characterized in that the power supply method includes the following processes:
the method comprises the following steps: starting the ignition module and the anode-heating module at the same time at the time t0, and introducing xenon into the hollow cathode 1; controlling an anode-heating module to heat a heater 1-3 through a relay, and under the continuous heating of the anode-heating module to the heater 1-3, when the temperature of an emitter 1-4 of the hollow cathode 1 reaches a preset temperature, enabling a high potential difference between a touch pole 1-2 of the hollow cathode 1 and a cathode top plate 1-5 of the hollow cathode 1 to enable gas between the touch pole 1-2 and the cathode top plate 1-5 to be broken down, wherein at the moment, the hollow cathode 1 is successfully ignited, and the moment when the ignition is successful is t 1;
step two: after the hollow cathode 1 is successfully ignited at the time t1, the relay controls the anode-heating module to stop heating the heaters 1-3, so that the anode-heating module starts to supply power to the anode plate 2, the anode-heating module boosts the electric energy output by the 42V direct-current power supply 3 and then continuously supplies power to the anode plate 2, the anode-heating module is closed at the time t2, so that the anode-heating module stops supplying power to the anode plate 2, the anode plate 2 starts to stably discharge with large current, and the conduction of a power supply loop is realized;
wherein t2> t1, the large current is a current larger than 4A and smaller than 15A, and the high potential difference is a voltage difference of which the potential difference is larger than or equal to 100V.
In the present embodiment, the control strategy for supplying power to the hollow cathode 1 by the integrated power supply circuit of the tethered satellite hollow cathode according to the second structure is as follows: specifically, referring to fig. 5, fig. 5 shows that the duration of heating the heaters 1 to 3 is less than 5min, the provided heating current 7A and the heating voltage 50V are provided, the power supply voltage 50V and the current 7A to the anode plate 2 are provided, and the ignition power-up 100V in fig. 5 refers to the voltage difference between the contact electrode of the hollow cathode and the cathode tube, and the output current of the ignition module is 0.1A.
In this embodiment, the predetermined temperature is a temperature greater than 1200 ℃.
Referring to fig. 3 and fig. 6, the present embodiment is described, and the present embodiment adopts another power supply method implemented by the integrated power supply circuit of the tethered satellite air cathode according to the second structure, where the power supply method includes the following processes:
the method comprises the following steps: starting the ignition module and the anode-heating module at the same time at the time t0, and introducing xenon into the hollow cathode 1; controlling an anode-heating module to heat a heater 1-3 through a relay, and under the continuous heating of the anode-heating module to the heater 1-3, when the temperature of an emitter 1-4 of the hollow cathode 1 reaches a preset temperature, enabling a high potential difference between a touch pole 1-2 of the hollow cathode 1 and a cathode top plate 1-5 of the hollow cathode 1 to enable gas between the touch pole 1-2 and the cathode top plate 1-5 to be broken down, wherein at the moment, the hollow cathode 1 is successfully ignited, and the moment when the ignition is successful is t 1;
step two, after the hollow cathode 1 is ignited successfully at the time of t1, the anode-heating module continues to heat the heaters 1-3 until the time of t2, the anode-heating module is controlled by a relay to stop heating the heaters 1-3 at the time of t2, the anode-heating module starts to supply power to the anode plate 2, the anode-heating module boosts the electric energy output by the 42V direct-current power supply 3 and then supplies power to the anode plate 2 continuously, the anode-heating module is controlled to stop supplying power to the anode plate 2 at the time of t3, at this time, the electronic anode plate 2 of the emitter 1-4 is led out, the hollow cathode 1 starts to discharge in a large-current steady state, and the continuous conduction of a power supply loop;
wherein t2> t1, the large current is a current larger than 4A and smaller than 15A, and the high potential difference is a voltage difference of which the potential difference is larger than or equal to 100V.
In the present embodiment, the control strategy for supplying power to the hollow cathode 1 by the integrated power supply circuit of the tethered satellite hollow cathode according to the second structure is as follows: referring to fig. 6 specifically, fig. 6 shows that the continuous heating time of the heaters 1-3 is less than 5min, the provided heating current 7A and the heating voltage 50V are provided, the power supply voltage 50V and the current 7A of the anode plate 2 are provided, and the ignition power-on in fig. 6 is 100V, which refers to the voltage difference between the contact electrode of the hollow cathode and the cathode tube, and the output current of the ignition module is 0.1A.
In this embodiment, the predetermined temperature is a temperature greater than 1200 ℃.
Referring to fig. 4 and fig. 7, the present embodiment is described, and the present embodiment adopts a second structure and a power supply method implemented by using the integrated power supply circuit of the tethered satellite air cathode according to the third structure, where the power supply method includes the following processes:
the method comprises the following steps: starting the anode-heating module at the time t0, and introducing xenon into the hollow cathode 1; controlling an anode-heating module to heat a heater 1-3 through a relay, and under the continuous heating of the anode-heating module to the heater 1-3, when the temperature of an emitter 1-4 of the hollow cathode 1 reaches a preset temperature, enabling a high potential difference between a touch pole 1-2 of the hollow cathode 1 and a cathode top plate 1-5 of the hollow cathode 1 to enable gas between the touch pole 1-2 and the cathode top plate 1-5 to be broken down, wherein at the moment, the hollow cathode 1 is successfully ignited, and the moment when the ignition is successful is t 1;
step two: at the time of t1, after the hollow cathode 1 is ignited successfully, the relay controls the anode-heating module to stop heating the heater 1-3, so that the anode-heating module starts to supply power to the anode plate 2, the anode-heating module boosts the electric energy output by the 42V direct-current power supply 3 and then supplies power to the anode plate 2 continuously, at the moment, electrons of the emitter 1-4 are led out by the anode plate 2, and the hollow cathode 1 starts large-current steady-state discharge under the condition of continuous power supply of the anode plate 2, so that the continuous conduction of a power supply loop is realized;
wherein t2> t1, the large current is a current larger than 4A and smaller than 15A, and the high potential difference is a voltage difference of which the potential difference is larger than or equal to 100V. In the present embodiment, the control strategy for supplying power to the hollow cathode 1 by the integrated power supply circuit of the tethered satellite hollow cathode with the third structure is as follows: the power supply strategy of the single-switch heating-anode module, specifically referring to fig. 7, in fig. 7, the heating current 7A provided when the continuous heating time of the heaters 1-3 is less than 5min, the power supply voltage of the anode plate 2 is 50V, and the current 7A are shown.
In this embodiment, the predetermined temperature is a temperature greater than 1200 ℃.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (13)
1. The integrated power supply circuit of the tethered satellite hollow cathode is used for supplying power to the hollow cathode (1) and the anode plate (2), and is characterized by comprising a 42V direct-current power supply (3), an ignition module, a heating module and an anode module;
the 42V direct current power supply (3) is used for supplying power to the ignition module, the heating module and the anode module, the positive pole of the 42V direct current power supply (3) is connected with the power supply input ends of the ignition module, the heating module and the anode module at the same time, and the negative pole of the 42V direct current power supply (3) is connected with the cathode tube (1-1) of the hollow cathode (1);
the power supply output end of the ignition module is connected with a touch electrode (1-2) of the hollow cathode (1);
the power supply output end of the heating module is connected with the power supply end of a heater (1-3) of the hollow cathode (1);
the power supply output end of the anode module is connected with the anode plate (2);
the ignition module and the anode module are used for performing boost conversion on 42V direct current output by a 42V direct current power supply (3), the ignition module is used for boosting the 42V direct current to 100V, and the anode module is used for boosting the 42V direct current to 50V;
and the heating module is used for carrying out voltage reduction conversion on the 42V direct current output by the 42V direct current power supply (3) and reducing the 42V direct current to 20V.
2. The tethered satellite air cathode integrated power supply circuit of claim 1, wherein the ignition module, the heating module, and the anode module are integrated on the same circuit board.
3. The integrated power supply circuit of the tethered satellite hollow cathode of claim 1, wherein the ignition module is implemented using a circuit of push-pull boost topology, flyback topology, or half-bridge topology;
the anode module is realized by adopting a circuit with a boost topological structure;
the heating module is realized by adopting a circuit with a voltage reduction topological structure.
4. The integrated power supply circuit of the tethered satellite hollow cathode is used for supplying power to the hollow cathode (1) and the anode plate (2), and is characterized by comprising a 42V direct-current power supply (3), an ignition module, a heating-anode module and a relay;
the 42V direct current power supply (3) is used for supplying power to the ignition module and the heating-anode module, the anode of the 42V direct current power supply (3) is connected with the power supply input ends of the ignition module and the heating-anode module at the same time, and the cathode of the 42V direct current power supply (3) is connected with the cathode tube (1-1) of the hollow cathode (1);
the power supply output end of the ignition module is connected with a touch electrode (1-2) of the hollow cathode (1);
the power supply output end of the heating-anode module is connected with the input end of the relay;
the first power supply output end of the relay is connected with the power supply end of the heater (1-3) of the hollow cathode (1), and the second power supply output end of the relay is connected with the anode plate (2);
the ignition module and the heating-anode module are used for performing boost conversion on 42V direct current output by a 42V direct current power supply (3), the ignition module is used for boosting the 42V direct current to 100V, and the heating-anode module is used for boosting the 42V direct current to 50V.
5. The tethered satellite air cathode integrated power supply circuit of claim 4, wherein the ignition module and the heater-anode module are integrated on the same circuit board.
6. The integrated power supply circuit of the tethered satellite hollow cathode of claim 4 wherein the ignition module is implemented using a circuit of push-pull boost topology, flyback topology or half-bridge topology;
the heating-anode module is realized by adopting a circuit with a boost topological structure.
7. The integrated power supply circuit of the tethered satellite hollow cathode is used for supplying power to the hollow cathode (1) and the anode plate (2), and is characterized by comprising a 42V direct-current power supply (3), a heating-anode module and a relay;
the 42V direct current power supply (3) is used for supplying power to the heating-anode module, the positive electrode of the 42V direct current power supply (3) is connected with the power supply input end of the heating-anode module, and the negative electrode of the 42V direct current power supply (3) is connected with the cathode tube (1-1) of the hollow cathode (1);
the power supply output end of the heating-anode module is connected with the input end of the relay;
the first power supply output end of the relay is connected with the power supply end of the heater (1-3) of the hollow cathode (1), and the second power supply output end of the relay is connected with the anode plate (2);
the heating-anode module is used for performing boost conversion on 42V direct current output by a 42V direct current power supply (3) and boosting the 42V direct current to 50V.
8. The tethered satellite air cathode integrated power supply circuit of claim 7, wherein the heater-anode module is implemented using a boost topology circuit.
9. The tethered satellite air cathode integrated power supply circuit of claim 3, 6 or 8, wherein all topology circuits are current closed loop controlled.
10. The power supply method realized by adopting the integrated power supply circuit of the tethered satellite hollow cathode of claim 1, wherein the power supply method comprises the following processes:
step one, starting an ignition module and a heating module simultaneously, and introducing xenon into a hollow cathode (1); after boosting the electric energy output by the 42V direct-current power supply (3), the ignition module supplies power to the touch and hold electrode (1-2) of the hollow cathode (1), and meanwhile, under the continuous heating of the heating module on the heater (1-3), when the temperature of the emitter (1-4) of the hollow cathode (1) reaches the preset temperature, the high potential difference between the touch and hold electrode (1-2) of the hollow cathode (1) and the cathode top plate (1-5) of the hollow cathode (1) enables the gas between the touch and hold electrode (1-2) and the cathode top plate (1-5) to be broken down, and at the moment, the hollow cathode (1) is successfully ignited;
step two, after the gas between the touch electrode (1-2) and the cathode top plate (1-5) is broken down, the anode module starts to work, and boosts the electric energy output by the 42V direct current power supply (3) and supplies power to the anode plate (2), at the moment, electrons of the emitter (1-4) are led out by the anode plate (2), and the hollow cathode (1) starts large-current steady-state discharge under the condition of continuous power supply of the anode plate (2), so that the continuous conduction of a power supply loop is realized;
the large current is a current larger than 4A and smaller than 15A, and the high potential difference is a voltage difference of which the potential difference is larger than or equal to 100V.
11. A power supply method realized by the integrated power supply circuit of the tethered satellite hollow cathode of claim 4, wherein the power supply method comprises the following steps:
the method comprises the following steps: starting the ignition module and the anode-heating module at the same time at the time t0, and introducing xenon into the hollow cathode (1); controlling an anode-heating module to heat a heater (1-3) through a relay, and enabling a high potential difference between a touch pole (1-2) of the hollow cathode (1) and a cathode top plate (1-5) of the hollow cathode (1) to enable gas between the touch pole (1-2) and the cathode top plate (1-5) to be broken down when the temperature of an emitter (1-4) of the hollow cathode (1) reaches a preset temperature under the condition that the anode-heating module continuously heats the heater (1-3), wherein the ignition success time of the hollow cathode (1) is t 1;
step two: after the hollow cathode (1) is ignited successfully at the time t1, the relay controls the anode-heating module to stop heating the heater (1-3), so that the anode-heating module starts to supply power to the anode plate (2), the anode-heating module boosts the electric energy output by the 42V direct-current power supply (3) and then supplies power to the anode plate (2) continuously, the anode-heating module is closed at the time t2, so that the anode-heating module stops supplying power to the anode plate (2), the anode plate (2) starts large-current stable discharge, and the conduction of a power supply loop is realized;
wherein t2> t1, the large current is a current larger than 4A and smaller than 15A, and the high potential difference is a voltage difference of which the potential difference is larger than or equal to 100V.
12. Another power supply method implemented by the integrated power supply circuit of tethered satellite air cathodes of claim 4 is characterized by the following process:
the method comprises the following steps: starting the ignition module and the anode-heating module at the same time at the time t0, and introducing xenon into the hollow cathode (1); controlling an anode-heating module to heat a heater (1-3) through a relay, and enabling a high potential difference between a touch pole (1-2) of the hollow cathode (1) and a cathode top plate (1-5) of the hollow cathode (1) to enable gas between the touch pole (1-2) and the cathode top plate (1-5) to be broken down when the temperature of an emitter (1-4) of the hollow cathode (1) reaches a preset temperature under the condition that the anode-heating module continuously heats the heater (1-3), wherein the ignition success time of the hollow cathode (1) is t 1;
step two, after the hollow cathode (1) is ignited successfully at the time of t1, the anode-heating module continues to heat the heater (1-3), until the time of t2, the anode-heating module is controlled by a relay to stop heating the heater (1-3) at the time of t2, so that the anode-heating module starts to supply power to the anode plate (2), the anode-heating module boosts the electric energy output by the 42V direct-current power supply (3) and then continuously supplies power to the anode plate (2), the anode-heating module is controlled to stop supplying power to the anode plate (2) at the time of t3, at the moment, electrons of the emitter (1-4) are led out by the anode plate (2), the hollow cathode (1) starts to discharge with large current in a stable state, and the continuous conduction of a power supply loop;
wherein t2> t1, the large current is a current larger than 4A and smaller than 15A, and the high potential difference is a voltage difference of which the potential difference is larger than or equal to 100V.
13. The power supply method realized by adopting the integrated power supply circuit of the tethered satellite hollow cathode of claim 7, wherein the power supply method comprises the following processes:
the method comprises the following steps: starting the anode-heating module at the time t0, and introducing xenon into the hollow cathode (1); controlling an anode-heating module to heat a heater (1-3) through a relay, and enabling a high potential difference between a touch pole (1-2) of the hollow cathode (1) and a cathode top plate (1-5) of the hollow cathode (1) to enable gas between the touch pole (1-2) and the cathode top plate (1-5) to be broken down when the temperature of an emitter (1-4) of the hollow cathode (1) reaches a preset temperature under the condition that the anode-heating module continuously heats the heater (1-3), wherein the ignition success time of the hollow cathode (1) is t 1;
step two: at the time of t1, after the hollow cathode (1) is ignited successfully, the relay controls the anode-heating module to stop heating the heater (1-3), so that the anode-heating module starts to supply power to the anode plate (2), the anode-heating module boosts the electric energy output by the 42V direct current power supply (3) and then supplies power to the anode plate (2) continuously, at the moment, electrons of the emitter (1-4) are led out by the anode plate (2), and the hollow cathode (1) starts large-current steady-state discharge under the condition of continuous power supply of the anode plate (2), so that the continuous conduction of a power supply loop is realized;
wherein t2> t1, the large current is a current larger than 4A and smaller than 15A, and the high potential difference is a voltage difference of which the potential difference is larger than or equal to 100V.
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