CN111954361B - Integrated power supply circuit and power supply method for rope-tied satellite hollow cathode - Google Patents

Abstract

An integrated power supply circuit and a power supply method for a hollow cathode of a tethered satellite relate to an integrated power supply circuit structure for supplying power to a hollow cathode of a tethered satellite. The heating power supply and the anode power supply are composed. Due to the large volume of the three power supplies, the mass of the entire power supply system is too heavy and the system structure is complex, thereby reducing the reliability of the cathode ignition. By connecting the same 42V DC power supply, the invention reduces the power supply loop of the hollow cathode from multiple power supplies to one power supply, greatly reduces the mass and volume of the hollow cathode power supply loop, and simplifies the complexity of the hollow cathode power supply loop. Improved reliability of hollow cathode ignition. The present invention is mainly used for supplying power to the hollow cathode.

Description

Integrated power supply circuit and power supply method for tethered satellite hollow cathode

technical field

The invention relates to an integrated power circuit structure for powering the hollow cathode of a tethered satellite.

Background technique

The hollow cathode is the core component of the plasma contactor. The plasma contactor is used to control the space potential of the aircraft, mainly including the hollow cathode, power supply and storage supply. Tethered satellites require a hollow cathode with a current range of 0-15A as a potential controller, while the power supply and storage and supply unit work independently. Under such background requirements, it is particularly important to develop a device that integrates the hollow cathode and power supply system.

The power supply used in space electric propulsion has high requirements on power density, efficiency and dynamic response speed. The ignition of the existing hollow cathode is usually composed of ignition power supply, heating power supply and anode power supply. The mass is too heavy, and the structure of the entire power supply system is complicated due to the large volume, which also reduces the reliability of the system. Therefore, the above problems need to be solved urgently, and it is urgent to provide a hollow cathode power supply circuit with a simple structure and small volume.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the problem that the ignition of the existing hollow cathode usually consists of an ignition power supply, a heating power supply and an anode power supply. Due to the large volume of the three power supplies, the entire power supply system is overweight and the system structure is complex, thereby reducing the reliability of cathode ignition. sex issue. The invention provides an integrated power supply circuit and a power supply method for the tethered satellite hollow cathode.

And provide the following specific structures of the integrated power supply circuit of the tethered satellite hollow cathode:

The first structure:

An integrated power supply circuit for the hollow cathode of the tethered satellite, the integrated power supply circuit is used to supply power to the hollow cathode and the anode plate, and the integrated power supply circuit includes a 42V DC power supply, an ignition module, a heating module and an anode module;

The 42V DC power supply is used to supply power to the ignition module, heating module and anode module, and the positive pole of the 42V DC power supply is connected to the power supply input terminals of the ignition module, heating module and anode module at the same time, and the negative pole of the 42V DC power supply is connected to the cathode tube of the hollow cathode connect;

The power supply output terminal of the ignition module is connected with the contact pole of the hollow cathode;

The power supply output terminal of the heating module is connected with the power supply terminal of the heater of the hollow cathode;

The power supply output terminal of the anode module is connected to the anode plate;

Both the ignition module and the anode module are used to boost the 42V DC output from the 42V DC power supply, and the ignition module is used to boost the 42V DC power to 100V, and the anode module is used to boost the 42V DC power to 50V;

The heating module is used for step-down converting the 42V direct current output by the 42V direct current power supply, and stepping down 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 realized by a circuit with a push-pull boost topology, a flyback topology or a half-bridge topology;

The anode module is realized by a boost topology circuit;

The heating module is implemented with a buck topology circuit.

The second structure:

An integrated power supply circuit for the hollow cathode of the tethered satellite, the integrated power supply circuit is used to supply power to the hollow cathode and the anode plate, and the integrated power supply circuit includes a 42V DC power supply, an ignition module, a heating-anode module and a relay;

The 42V DC power supply is used to supply power to the ignition module and the heating-anode module, and the positive pole of the 42V DC power supply is connected to the power supply input terminals of the ignition module and the heating-anode module at the same time, and the negative pole of the 42V DC power supply is connected to the cathode tube of the hollow cathode;

The power supply output terminal of the ignition module is connected with the contact pole 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 to the power supply end of the heater of the hollow cathode, and the second power supply output end of the relay is connected to the anode plate;

The ignition module and the heating-anode module are both used to boost the 42V DC output from the 42V DC power supply, and the ignition module is used to boost the 42V DC power to 100V, and the heating-anode module is used to boost the 42V DC power to 50V .

Preferably, the ignition module and the heating-anode module are integrated on the same circuit board.

Preferably, the ignition module is realized by a circuit with a push-pull boost topology, a flyback topology or a half-bridge topology;

The heating-anode module is implemented with a boost topology circuit.

The third structure:

An integrated power supply circuit for the hollow cathode of the tethered satellite, the integrated power supply circuit is used to supply power to the hollow cathode and the anode plate, and the integrated power supply circuit includes a 42V DC power supply, a heating-anode module and a relay;

The 42V DC power supply is used to supply power to the heating-anode module, and the positive pole of the 42V DC power supply is connected to the power supply input terminal of the heating-anode module, and the negative pole of the 42V DC power supply is connected to 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 to the power supply end of the heater of the hollow cathode, and the second power supply output end of the relay is connected to the anode plate;

The heating-anode module is used to step-up convert the 42V direct current output by the 42V direct current power supply, and boost the 42V direct current to 50V.

Preferably, the heating-anode module is realized by a boost topology circuit.

Preferably, in the integrated power supply circuit of the hollow cathode of the tethered satellite with the above three structures, all topological circuits perform closed-loop current control.

The power supply method realized by the integrated power supply circuit of the tethered satellite hollow cathode of the first structure, the power supply method includes the following processes:

Step 1. Turn on the ignition module and heating module at the same time, and feed xenon gas into the hollow cathode; after the ignition module boosts the electric energy output by the 42V DC power supply, it supplies power to the contact electrode of the hollow cathode, and at the same time, the heating module supplies power to the heater. Under continuous heating, when the emitter temperature of the hollow cathode reaches the preset temperature, the high potential difference between the contact electrode of the hollow cathode and the cathode top plate causes the gas between the contact electrode and the cathode top plate to be broken down. At this time, the hollow cathode successful ignition;

Step 2. When the gas between the contact electrode and the cathode top plate is broken down, the anode module starts to work, and boosts the electric energy output by the 42V DC power supply to supply power to the anode plate. At this time, the electrons of the emitter are captured by the anode plate Leading out, under the condition of continuous power supply on the anode plate, the hollow cathode starts to discharge in a steady state with a large current, so as to realize the continuous conduction of the power supply circuit;

A large current is a current greater than 4A and less than 15A, and a high potential difference is a voltage difference with a potential difference greater than or equal to 100V.

A kind of power supply method that adopts the integrated power supply circuit of the tethered satellite hollow cathode of the second structure to realize, it is characterized in that, this power supply method comprises the following process:

Step 1: Turn on the ignition module and the anode-heating module at the same time at time t0, and pass xenon gas into the hollow cathode; control the anode-heating module to heat the heater through the relay, and under the continuous heating of the heater by the anode-heating module, When the emitter temperature of the hollow cathode reaches the preset temperature, the high potential difference between the contact electrode of the hollow cathode and the cathode top plate causes the gas between the contact electrode and the cathode top plate to be broken down. At this time, the hollow cathode ignites successfully, and the The moment of successful ignition is t1;

Step 2: After the hollow cathode is successfully ignited at time t1, the anode-heating module is controlled by the relay to stop heating the heater, so that the anode-heating module starts to supply power to the anode plate, and the anode-heating module boosts the electric energy output by the 42V DC power supply Continuously supply power to the anode plate, turn off the anode-heating module at time t2, so that the anode-heating module stops supplying power to the anode plate, and the anode plate starts to discharge stably with a large current to realize the conduction of the power supply circuit;

Wherein, t2>t1, the high current is a current greater than 4A and less than 15A, and the high potential difference is a voltage difference with a potential difference greater than or equal to 100V.

Another power supply method realized by the integrated power supply circuit of the tethered satellite hollow cathode of the second structure is characterized in that the power supply method includes the following process:

Step 1: Turn on the ignition module and the anode-heating module at the same time at time t0, and pass xenon gas into the hollow cathode; control the anode-heating module to heat the heater through the relay, and under the continuous heating of the heater by the anode-heating module, When the emitter temperature of the hollow cathode reaches the preset temperature, the high potential difference between the contact electrode of the hollow cathode and the cathode top plate causes the gas between the contact electrode and the cathode top plate to be broken down. At this time, the hollow cathode ignites successfully, and the The moment of successful ignition is t1;

Step 2: After the hollow cathode is successfully ignited at time t1, the anode-heating module continues to heat the heater until time t2. At time t2, the anode-heating module is controlled by a relay to stop heating the heater, so that the anode-heating module starts to heat the anode Plate power supply, the anode-heating module boosts the electric energy output by the 42V DC power supply to continuously supply power to the anode plate, and controls the anode-heating module to stop supplying power to the anode plate at time t3, at this time, the electrons of the emitter are drawn out by the anode plate, The hollow cathode starts a high-current steady-state discharge to realize continuous conduction of the power supply circuit;

Wherein, t2>t1, the high current is a current greater than 4A and less than 15A, and the high potential difference is a voltage difference with a potential difference greater than or equal to 100V.

The power supply method realized by the integrated power supply circuit of the tethered satellite hollow cathode adopting the third structure, the power supply method includes the following process:

Step 1: Turn on the anode-heating module at time t0, and pass xenon gas into the hollow cathode; control the anode-heating module to heat the heater through the relay, and under the continuous heating of the heater by the anode-heating module, make the hollow cathode When the temperature of the emitter reaches the preset temperature, the high potential difference between the contact electrode of the hollow cathode and the cathode top plate causes the gas between the contact electrode and the cathode top plate to be broken down. At this time, the hollow cathode ignites successfully, and the moment of successful ignition for t1;

Step 2: After the hollow cathode is successfully ignited at time t1, the anode-heating module is controlled by the relay to stop heating the heater, so that the anode-heating module starts to supply power to the anode plate, and the anode-heating module boosts the electric energy output by the 42V DC power supply Continuously supply power to the anode plate. At this time, the electrons of the emitter are drawn out by the anode plate. Under the continuous power supply condition of the anode plate, the hollow cathode starts to discharge in a steady state with a large current to realize continuous conduction of the power supply circuit;

Wherein, t2>t1, the high current is a current greater than 4A and less than 15A, and the high potential difference is a voltage difference with a potential difference greater than or equal to 100V.

The beneficial effects brought by the present invention are: by externally connecting a 42V DC power supply with the same input voltage, the power supply circuit of the hollow cathode is reduced from multiple power supplies to one power supply, which greatly reduces the quality and volume of the hollow cathode power supply circuit, and simplifies The complexity of the hollow cathode power supply circuit is reduced, and the reliability of the hollow cathode ignition is improved.

The 42V DC power supply used in the present invention is small in size, simple in structure and high in reliability, and only one power supply is needed to start the hollow cathode. Therefore, a cathode power integration method in which a single power supply is connected to an external power module is proposed. The ignition module has higher requirements for instantaneous response, but lower requirements for output power. In application, only a dozen watts are needed to start the cathode, and lower power can also effectively reduce the size of the ignition module. The anode module is the module that consumes the most power in the entire system. It must ensure sufficient input power and good heat dissipation design. The power of the heating module is about 100W. The discharge process during heating is similar to that of the anode discharge, which is a large current constant current discharge.

Description of drawings

Fig. 1 is a schematic diagram of the principle of a traditional hollow cathode power supply circuit;

Fig. 2 is the first structure schematic diagram of the integrated power supply circuit of the tethered satellite hollow cathode;

Fig. 3 is a schematic diagram of the second structure of the integrated power supply circuit of the hollow cathode of the tethered satellite; Fig. 4 is a schematic diagram of the third structure of the integrated power supply circuit of the hollow cathode of the tethered satellite;

Fig. 5 is a timing diagram for powering the hollow cathode 1 by the integrated power supply circuit of the tethered satellite hollow cathode of the second structure through a power supply method;

Fig. 6 is a timing diagram of powering the hollow cathode 1 by the integrated power supply circuit of the tethered satellite hollow cathode of the second structure through another power supply method;

Fig. 7 is a timing diagram for powering the hollow cathode 1 through the integrated power supply circuit of the tethered satellite hollow cathode with the third structure;

Among them, in Fig. 1 to Fig. 7, the reference numeral 1 is the hollow cathode, the reference numeral 1-1 is the cathode tube of the hollow cathode, the reference numeral 1-2 is the contact electrode of the hollow cathode, and the reference numeral 1-3 It is the heater of the hollow cathode, the reference numeral 1-4 is the emitter of the hollow cathode, the reference numeral 1-5 is the cathode top plate of the hollow cathode, the reference numeral 1-6 is the cathode hole of the hollow cathode, the reference numeral 1 -7 is the heat shield of the hollow cathode.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

The first structure of the integrated power supply circuit of the tethered satellite hollow cathode, see Figure 2 for details:

Referring to Fig. 2 to illustrate this embodiment, the integrated power supply circuit of the tethered satellite hollow cathode described in this embodiment, the integrated power supply circuit is used to supply power to the hollow cathode 1 and the anode plate 2, and the integrated power supply circuit includes a 42V DC power supply 3, ignition module, heating module and anode module;

The 42V DC power supply 3 is used to supply power to the ignition module, the heating module and the anode module, and the positive pole of the 42V DC power supply 3 is connected to the power supply input terminals of the ignition module, the heating module and the anode module at the same time, and the negative pole of the 42V DC power supply 3 is connected to the hollow cathode The cathode tube of 1 is connected 1-1;

The power supply output terminal of the ignition module is connected to the contact pole 1-2 of the hollow cathode 1;

The power supply output terminal of the heating module is connected with the power supply terminal of the heater 1-3 of the hollow cathode 1;

The power supply output terminal of the anode module is connected to the anode plate 2;

Both the ignition module and the anode module are used to boost the 42V DC output from the 42V DC power supply 3, and the ignition module is used to boost the 42V DC power to 100V, and the anode module is used to boost the 42V DC power to 50V;

The heating module is used for down-converting the 42V direct current output by the 42V direct current power supply 3, and stepping down the 42V direct current to 20V.

In this embodiment, one power supply is integrated in the form of "three modules + one 42V DC power supply". The integrated power supply only includes one 42V DC power supply, and the power supply circuit of the hollow cathode is reduced from multiple power supplies to one The power supply reduces the quantity, volume and quality of the power used for the ignition of the hollow cathode in the prior art, simplifies the complexity of the hollow cathode power supply circuit, and improves the reliability of the hollow cathode ignition.

The ignition module has higher requirements for instantaneous response, but lower requirements for output power. In application, only a dozen watts are needed to start the cathode, and lower power can also effectively reduce the size of the ignition module. The anode module is the most power-consuming device in the entire system, so this module is a high-power module. When designing the system, sufficient input power and good heat dissipation design must be ensured. The power of the heating module is about 100W. The heating process is similar to the anode discharge. All are constant current discharges.

Further, the ignition module, the heating module and the anode module are integrated on the same circuit board.

In this preferred embodiment, the ignition module, the heating module and the anode module are integrated on the same circuit board, which further reduces the volume of the integrated power supply circuit of the tethered satellite hollow cathode.

Furthermore, the ignition module is realized by a circuit with a push-pull boost topology, a flyback topology or a half-bridge topology;

The anode module is realized by a boost topology circuit;

The heating module is implemented with a buck topology circuit.

In this preferred embodiment, the boost topology is a basic boost topology, which is a non-isolated circuit topology, suitable for high power and high current output, while the push-pull boost topology, flyback topology and semi The bridge topology is an isolated topology, suitable for high voltage and low current. Because the output voltage of the ignition module is too high, generally up to 100V, isolation is required, so isolation topologies such as push-pull boost, flyback topology, and half-bridge topology can only be used.

The second structure of the integrated power supply circuit of the tethered satellite hollow cathode, see Figure 3 for details:

Referring to Fig. 3 to illustrate this embodiment, the integrated power supply circuit of the tethered satellite hollow cathode described in this embodiment, the integrated power supply circuit is used to supply power to the hollow cathode 1 and the anode plate 2,

The integrated power supply circuit includes 42V DC power supply 3, ignition module, heating-anode module and relay;

The 42V DC power supply 3 is used to supply power to the ignition module and the heating-anode module, and the positive pole of the 42V DC power supply 3 is connected to the power supply input terminals of the ignition module and the heating-anode module at the same time, and the negative pole of the 42V DC power supply 3 is connected to the hollow cathode 1 Cathode tube 1-1 connection;

The power supply output terminal of the ignition module is connected to the contact pole 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 to 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 to the anode plate 2;

The ignition module and the heating-anode module are both used to boost the 42V DC output from the 42V DC power supply 3, and the ignition module is used to boost the 42V DC power to 100V, and the heating-anode module is used to boost the 42V DC power to 100V. 50V.

In this embodiment, one power supply is integrated in the form of "two modules + one 42V DC power supply". The integrated power supply only includes one 42V DC power supply, and the power supply circuit of the hollow cathode is reduced from multiple power supplies to one The power supply reduces the quantity, volume and quality of the power used for the ignition of the hollow cathode in the prior art, simplifies the complexity of the hollow cathode power supply circuit, and improves the reliability of the hollow cathode ignition. The power supply circuit is controlled by a relay.

The ignition module has higher requirements for instantaneous response, but lower requirements for output power. In application, only a dozen watts are needed to start the cathode, and lower power can also effectively reduce the size of the ignition module. The heating-anode module is the most power-consuming device in the whole system. Therefore, this module is a high-power module. When designing the system, sufficient input power and good heat dissipation must be ensured. The power of the heating-anode module is about 100W. The heating process and The anode discharge is similar and is a constant current discharge.

Further, the ignition module and the heating-anode module are integrated on the same circuit board.

In this preferred embodiment, the ignition module and the heating-anode module are integrated on the same circuit board, which further reduces the volume of the integrated power supply circuit of the tethered satellite hollow cathode.

Furthermore, the ignition module is realized by a circuit with a push-pull boost topology, a flyback topology or a half-bridge topology;

The heating-anode module is implemented with a boost topology circuit.

In this preferred embodiment, in this preferred embodiment, the boost topology is a basic boost topology, which is a non-isolated circuit topology, suitable for high power and high current output, while the push-pull boost topology, Flyback topology and half-bridge topology are isolated topologies, suitable for high voltage and low current. Because the output voltage of the ignition module is too high, generally up to 100V, isolation is required, so isolation topologies such as push-pull boost, flyback topology, and half-bridge topology can only be used.

The third structure of the integrated power supply circuit of the tethered satellite hollow cathode, see Figure 4 for details:

Referring to Fig. 4 to illustrate this embodiment, the integrated power supply circuit of the tethered satellite hollow cathode described in this embodiment, the integrated power supply circuit is used to supply power to the hollow cathode 1 and the anode plate 2, and the integrated power supply circuit includes 42V DC power supply 3, heating-anode module and relay;

The 42V DC power supply 3 is used to supply power to the heating-anode module, and the positive pole of the 42V DC power supply 3 is connected to the power supply input terminal of the heating-anode module, and the negative pole of the 42V DC power supply 3 is connected to 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 to 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 to the anode plate 2;

The heating-anode module is used for step-up converting the 42V direct current output by the 42V direct current power supply 3, and boosting the 42V direct current to 50V.

In this embodiment, a power supply is integrated in the form of "one module + one 42V DC power supply". The integrated power supply only includes one 42V DC power supply, and the power supply circuit of the hollow cathode is reduced from multiple power supplies to one power supply. The power supply reduces the quantity, volume and quality of the power supply used for the ignition of the hollow cathode in the prior art, simplifies the complexity of the hollow cathode power supply circuit, and improves the reliability of the hollow cathode ignition.

The heating-anode module is the most power-consuming device in the whole system. Therefore, this module is a high-power module. When designing the system, sufficient input power and good heat dissipation must be ensured. The power of the heating-anode module is about 100W. The heating process and The anode discharge is similar and is a constant current discharge.

Further, the heating-anode module is realized by a boost topology circuit.

Further, in the integrated power supply circuits of the hollow cathodes of the three tethered satellites mentioned above, all the topological circuits perform current closed-loop control.

In this preferred embodiment, the advantages of the current closed-loop control are: firstly, it protects the power module from being burned due to excessive current; secondly, it is beneficial to the discharge stability of the hollow cathode 1 .

The power supply method realized by the integrated power supply circuit of the tethered satellite hollow cathode described in the first structure, the power supply method includes the following process:

Step 1. Turn on the ignition module and the heating module at the same time, and feed xenon gas into the hollow cathode 1; after the ignition module boosts the electric energy output by the 42V DC power supply 3, it supplies power to the contact electrodes 1-2 of the hollow cathode 1, and at the same time Under the continuous heating of the heater 1-3 by the heating module, when the temperature of the emitter 1-4 of the hollow cathode 1 reaches the preset temperature, the high potential difference between the contact electrode 1-2 of the hollow cathode 1 and its cathode top plate 1-5 , so that the gas between the contact electrode 1-2 and the cathode top plate 1-5 is broken down, and at this time, the hollow cathode 1 is ignited successfully;

Step 2. When the gas between the contact 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 DC power supply 3 to supply power to the anode plate 2. At this time , the electrons of the emitters 1-4 are drawn out by the anode plate 2, and the anode plate 2 is under the condition of continuous power supply, and the hollow cathode 1 starts a high-current steady-state discharge to realize the continuous conduction of the power supply circuit;

A large current is a current greater than 4A and less than 15A, and a high potential difference is a voltage difference with a potential difference greater than or equal to 100V.

In this embodiment, the preset temperature is a temperature higher than 1200°C.

Referring to Fig. 3 and Fig. 5, present embodiment is described, and present embodiment adopts a kind of power supply method that the integrated power supply circuit of tethered satellite hollow cathode described in the second structure realizes, it is characterized in that, this power supply method comprises following process:

Step 1: Turn on the ignition module and the anode-heating module at the same time at time t0, and feed xenon gas into the hollow cathode 1; control the anode-heating module to heat the heaters 1-3 through the relay, and the anode-heating module to heat the heater 1 Under the continuous heating of -3, when the temperature of the emitter 1-4 of the hollow cathode 1 reaches the preset temperature, the high potential difference between the contact electrode 1-2 of the hollow cathode 1 and its cathode top plate 1-5 makes the contact electrode 1 The gas between -2 and the cathode top plate 1-5 is broken down. At this time, the hollow cathode 1 is ignited successfully, and the moment of successful ignition is t1;

Step 2: After the hollow cathode 1 is successfully ignited at time t1, the anode-heating module is controlled by the relay to stop heating the heaters 1-3, so that the anode-heating module starts to supply power to the anode plate 2, and the anode-heating module outputs 42V DC power supply 3 After the electric energy is boosted, the anode plate 2 is continuously powered, and the anode-heating module is turned off at time t2, so that the anode-heating module stops supplying power to the anode plate 2, and the anode plate 2 starts to discharge stably with a large current to realize the conduction of the power supply circuit;

Wherein, t2>t1, the high current is a current greater than 4A and less than 15A, and the high potential difference is a voltage difference with a potential difference greater than or equal to 100V.

In this embodiment, the control strategy for supplying power to the hollow cathode 1 through the integrated power supply circuit of the tethered satellite hollow cathode described in the second structure is: the power supply strategy of heating and igniting at the same time, see Figure 5 and Figure 5 for details It shows that the continuous heating time of heaters 1-3 is less than 5min, the heating current provided is 7A, the heating voltage is 50V, the power supply voltage to the anode plate 2 is 50V, and the current is 7A. The voltage difference between the contact electrode of the hollow cathode and the cathode tube, the output current of the ignition module is 0.1A.

In this embodiment, the preset temperature is a temperature higher than 1200°C.

Referring to Fig. 3 and Fig. 6, the present embodiment is illustrated. The present embodiment adopts another power supply method realized by the integrated power supply circuit of the tethered satellite hollow cathode described in the second structure, and the power supply method includes the following process:

Step 1: Turn on the ignition module and the anode-heating module at the same time at time t0, and feed xenon gas into the hollow cathode 1; control the anode-heating module to heat the heaters 1-3 through the relay, and the anode-heating module to heat the heater 1 Under the continuous heating of -3, when the temperature of the emitter 1-4 of the hollow cathode 1 reaches the preset temperature, the high potential difference between the contact electrode 1-2 of the hollow cathode 1 and its cathode top plate 1-5 makes the contact electrode 1 The gas between -2 and the cathode top plate 1-5 is broken down. At this time, the hollow cathode 1 is ignited successfully, and the moment of successful ignition is t1;

Step 2: After the hollow cathode 1 is successfully ignited at time t1, the anode-heating module continues to heat the heater 1-3 until time t2, at which time the anode-heating module is controlled by a relay to stop heating the heater 1-3, so that The anode-heating module starts to supply power to the anode plate 2, and the anode-heating module continues to supply power to the anode plate 2 after boosting the electric energy output by the 42V DC power supply 3, and controls the anode-heating module to stop supplying power to the anode plate 2 at time t3. When , the electrons of the emitters 1-4 are drawn out by the anode plate 2, and the hollow cathode 1 starts to discharge in a steady state with a large current, so as to realize the continuous conduction of the power supply circuit;

Wherein, t2>t1, the high current is a current greater than 4A and less than 15A, and the high potential difference is a voltage difference with a potential difference greater than or equal to 100V.

In this embodiment, the control strategy for supplying power to the hollow cathode 1 through the integrated power supply circuit of the tethered satellite hollow cathode described in the second structure is: a power supply strategy for heating and ignition at staggered timing, see FIG. 6 for details. It is given that the continuous heating time of the heaters 1-3 is less than 5min, the heating current provided is 7A, the heating voltage is 50V, the power supply voltage to the anode plate 2 is 50V, and the current is 7A. The voltage difference between the contact electrode of the cathode and the cathode tube, the output current of the ignition module is 0.1A.

In this embodiment, the preset temperature is a temperature higher than 1200°C.

Referring to Fig. 4 and Fig. 7, present embodiment is described, and present embodiment adopts the power supply method that the second structure adopts the integrated power supply circuit of the tethered satellite hollow cathode described in the third structure to realize the power supply method, and the power supply method includes the following process:

Step 1: Turn on the anode-heating module at time t0, and pass xenon gas into the hollow cathode 1; control the anode-heating module to heat the heater 1-3 through the relay, and the anode-heating module continues to heat the heater 1-3 Under heating, when the temperature of the emitter 1-4 of the hollow cathode 1 reaches the preset temperature, the high potential difference between the contact electrode 1-2 of the hollow cathode 1 and its cathode top plate 1-5 makes the contact electrode 1-2 and the cathode The gas between the top plates 1-5 is broken down, at this time, the hollow cathode 1 is successfully ignited, and the moment of successful ignition is t1;

Step 2: After the hollow cathode 1 is successfully ignited at time t1, the anode-heating module is controlled by the relay to stop heating the heaters 1-3, so that the anode-heating module starts to supply power to the anode plate 2, and the anode-heating module outputs 42V DC power supply 3 After the electric energy is boosted, the anode plate 2 is continuously powered. At this time, the electrons of the emitters 1-4 are drawn out by the anode plate 2. Under the continuous power supply condition of the anode plate 2, the hollow cathode 1 starts a large current steady-state discharge to realize power supply. The circuit continues to conduct;

Wherein, t2>t1, the high current is a current greater than 4A and less than 15A, and the high potential difference is a voltage difference with a potential difference greater than or equal to 100V. In this embodiment, the control strategy for powering the hollow cathode 1 through the integrated power supply circuit of the tethered satellite hollow cathode described in the third structure is: the power supply strategy for the single-open heating-anode module, see FIG. 7 for details. 7 shows that the continuous heating time of the heaters 1-3 is less than 5 minutes, the heating current provided is 7A, the supply voltage to the anode plate 2 is 50V, and the current is 7A.

In this embodiment, the preset temperature is a temperature higher than 1200°C.

Although the invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely illustrative of the principles and applications of the invention. It is therefore to be understood that numerous modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the invention as defined by the appended claims. It shall be understood that different dependent claims and features described herein may be combined in a different way than that described in the original claims. It will also be appreciated that features described in connection with individual embodiments can be used in other described embodiments.

Claims (9)

1. The integrated power supply circuit of the tethered satellite hollow cathode, the integrated power supply circuit is used to supply power to the hollow cathode (1) and the anode plate (2), it is characterized in that the integrated power supply circuit includes a 42V DC power supply (3 ), ignition module, heating-anode module and relay; The 42V DC power supply (3) is used to supply power to the ignition module and the heating-anode module, and the positive pole of the 42V DC power supply (3) is connected to the power supply input terminals of the ignition module and the heating-anode module at the same time, and the 42V DC power supply (3) The negative pole is connected with the cathode tube (1-1) of the hollow cathode (1); The power supply output end of the ignition module is connected to the contact pole (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 to 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 to the anode plate (2); The ignition module and the heating-anode module are both used to boost the 42V DC output from the 42V DC power supply (3). Voltage to 50V. 2. The integrated power supply circuit of the tethered satellite hollow cathode according to claim 1, wherein the ignition module and the heating-anode module are integrated on the same circuit board. 3. The integrated power supply circuit of the tethered satellite hollow cathode according to claim 1, wherein the ignition module is realized by a circuit of a push-pull boost topology, a flyback topology or a half-bridge topology; The heating-anode module is implemented with a boost topology circuit. 4. The integrated power supply circuit of the tethered satellite hollow cathode, the integrated power supply circuit is used to supply power to the hollow cathode (1) and the anode plate (2), it is characterized in that the integrated power supply circuit includes a 42V DC power supply (3 ), heating-anode modules and relays; The 42V DC power supply (3) is used to supply power to the heating-anode module, and the positive pole of the 42V DC power supply (3) is connected to the power supply input end of the heating-anode module, and the negative pole of the 42V DC power supply (3) is connected to the hollow cathode (1) The cathode tube (1-1) is connected; 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 to 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 to the anode plate (2); The heating-anode module is used for boosting the 42V direct current output by the 42V direct current power supply (3), and boosting the 42V direct current to 50V. 5. The integrated power supply circuit of the tethered satellite hollow cathode according to claim 4, characterized in that the heating-anode module is realized by a circuit with a boost topology. 6. The integrated power supply circuit for the hollow cathode of the tethered satellite according to claim 3 or 5, characterized in that all topological circuits perform current closed-loop control. 7. adopt a kind of power supply method that the integrated power supply circuit of tethered satellite hollow cathode according to claim 1 realizes, it is characterized in that, this power supply method comprises following process: Step 1: Turn on the ignition module and the anode-heating module at the same time at time t0, and feed xenon gas into the hollow cathode (1); control the anode-heating module to heat the heater (1-3) through the relay, and the anode-heating module Under the continuous heating of the heater (1-3), when the temperature of the emitter (1-4) of the hollow cathode (1) reaches the preset temperature, the contact electrode (1-2) of the hollow cathode (1) and its cathode The high potential difference between the top plate (1-5) causes the gas between the contact electrode (1-2) and the cathode top plate (1-5) to be broken down. At this time, the hollow cathode (1) ignites successfully, and the successful ignition The moment is t1; Step 2: After the hollow cathode (1) is successfully ignited at time t1, the anode-heating module is controlled by the relay to stop heating the heater (1-3), so that the anode-heating module starts to supply power to the anode plate (2), and the anode-heating module Boost the electric energy output by the 42V DC power supply (3) to continuously supply power to the anode plate (2), and turn off the anode-heating module at time t2, so that the anode-heating module stops supplying power to the anode plate (2), and the anode plate (2) ) starts a large current and stable discharge to realize the conduction of the power supply circuit; Wherein, t2>t1, the high current is a current greater than 4A and less than 15A, and the high potential difference is a voltage difference with a potential difference greater than or equal to 100V. 8. adopt a kind of power supply method that the integrated power supply circuit of tethered satellite hollow cathode according to claim 1 realizes, it is characterized in that, this power supply method comprises following process: Step 1: Turn on the ignition module and the anode-heating module at the same time at time t0, and feed xenon gas into the hollow cathode (1); control the anode-heating module to heat the heater (1-3) through the relay, and the anode-heating module Under the continuous heating of the heater (1-3), when the temperature of the emitter (1-4) of the hollow cathode (1) reaches the preset temperature, the contact electrode (1-2) of the hollow cathode (1) and its cathode The high potential difference between the top plate (1-5) causes the gas between the contact electrode (1-2) and the cathode top plate (1-5) to be broken down. At this time, the hollow cathode (1) ignites successfully, and the successful ignition The moment is t1; Step 2: After the hollow cathode (1) is successfully ignited at time t1, the anode-heating module continues to heat the heater (1-3) until time t2, and the anode-heating module is controlled by a relay to stop heating the heater (1-3) at time t2. -3) heating, so that the anode-heating module starts to supply power to the anode plate (2), and the anode-heating module boosts the electric energy output by the 42V DC power supply (3) and then continuously supplies power to the anode plate (2), which is controlled at time t3 The anode-heating module stops supplying power to the anode plate (2), at this time, the electrons of the emitters (1-4) are drawn out by the anode plate (2), and the hollow cathode (1) starts a high-current steady-state discharge to realize continuous conduction of the power supply circuit. Pass; Wherein, t2>t1, the high current is a current greater than 4A and less than 15A, and the high potential difference is a voltage difference with a potential difference greater than or equal to 100V. 9. adopt the power supply method that the integrated power supply circuit of tethered satellite hollow cathode according to claim 4 realizes, it is characterized in that, this power supply method comprises following process: Step 1: Turn on the anode-heating module at time t0, and feed xenon gas into the hollow cathode (1); control the anode-heating module to heat the heater (1-3) through a relay, and heat the heater (1-3) in the anode-heating module Under the continuous heating of 1-3), when the temperature of the emitter (1-4) of the hollow cathode (1) reaches the preset temperature, the contact electrode (1-2) of the hollow cathode (1) and its cathode top plate (1- 5) The high potential difference between the electrodes causes the gas between the contact electrode (1-2) and the cathode top plate (1-5) to be broken down. At this time, the hollow cathode (1) is ignited successfully, and the moment of successful ignition is t1; Step 2: After the hollow cathode (1) is successfully ignited at time t1, the anode-heating module is controlled by the relay to stop heating the heater (1-3), so that the anode-heating module starts to supply power to the anode plate (2), and the anode-heating module The electric energy output by the 42V DC power supply (3) is boosted to continuously supply power to the anode plate (2). Under the condition of power supply, the hollow cathode (1) starts to discharge in a steady state with a large current, so as to realize the continuous conduction of the power supply circuit; Wherein, t2>t1, the high current is a current greater than 4A and less than 15A, and the high potential difference is a voltage difference with a potential difference greater than or equal to 100V.

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