High-power satellite energy system architecture based on novel high-voltage bus

Abstract

The invention provides a high-power satellite energy system architecture based on a novel high-voltage bus. The high-power satellite energy system architecture comprises a high-voltage solar wing, a high-voltage storage battery pack, a high-voltage isolation power supply controller and a high-voltage power distribution unit, the high-voltage isolation power supply controller comprises a plurality of solar array modules, a plurality of isolation type charging and discharging adjusting modules, at least two telemetering and remote control modules, a capacitor module and a backboard assembly. Each solar array module is connected with a battery sub-array in the high-voltage solar wing and is used for obtaining electric energy; each isolated charging and discharging adjusting module is connected with the high-voltage storage battery pack and is used for realizing charging and discharging control on the high-voltage storage battery pack; the capacitor module is used for stabilizing the bus voltage without transient fluctuation; and the backboard assembly is used for connecting mechanical and circuit interfaces of each module. Therefore, the power supply adjusting topology can be optimized, the full-link loss can be reduced, the power level can be multiplied under the same weight or volume scale, and the hundred-kilowatt power level can be broken through by a single satellite.

Description

Technical Field

[0001] This invention belongs to the field of satellite power design, and in particular relates to a high-power satellite power system architecture based on a novel high-voltage bus. Background Technology

[0002] Satellite power systems generally adopt a fully regulated bus architecture, which is a widely used power distribution and regulation scheme in satellite power systems. It can effectively utilize the energy of solar panels and batteries, and can continuously and uninterruptedly supply power during periods of sunshine or shadow, supporting stable operation of the load.

[0003] Currently, the bus voltage level of mainstream satellite platforms both domestically and internationally is 100V, with a maximum power of approximately 30kW per satellite. However, under unchanged space constraints, the existing architecture cannot meet the ultra-high power load requirements of hundreds of kilowatts and above in orbit simply by adding individual modules or expanding the scale of individual units. Furthermore, as the power level increases, the existing 100V bus architecture will lead to a significant increase in end-to-end power loss, and traditional power conditioning circuits will struggle to adapt to the wide range of voltage variations brought about by higher voltage levels.

[0004] Therefore, existing technologies suffer from technical bottlenecks such as limited power levels, low transmission efficiency, and difficulty in adapting to high-voltage boosting requirements. Summary of the Invention

[0005] The purpose of this invention is to provide a high-power satellite energy system architecture based on a novel high-voltage bus. By increasing the bus voltage level to 300V, the power supply and distribution system capacity is effectively improved, the power loss in the entire process is reduced, and the stable operation of a 100-kilowatt power level system is supported.

[0006] To achieve the above-mentioned technical effects, the present invention provides a high-power satellite energy system architecture based on a novel high-voltage bus, including a high-voltage solar array, a high-voltage battery pack, a high-voltage isolated power controller, and a high-voltage power distribution unit; the high-voltage isolated power controller is used to regulate the electrical energy provided by the high-voltage solar array and the high-voltage battery pack to form a single fully regulated high-voltage bus with a voltage level of 300V or higher, and to distribute power to the on-board loads through the high-voltage power distribution unit;

[0007] The high-voltage isolated power supply controller includes several solar array modules, several isolated charge / discharge regulation modules, at least two telemetry and remote control modules, a capacitor module, and a backplane assembly. Each solar array module is connected to a battery array in the high-voltage solar array to acquire electrical energy. Each isolated charge / discharge regulation module is connected to the high-voltage battery pack to control the charge and discharge of the high-voltage battery pack. The capacitor module is used to stabilize the bus voltage to prevent transient fluctuations. The backplane assembly is used to connect the mechanical and electrical interfaces of each module.

[0008] Furthermore, the high-voltage isolated power supply controller adopts a domain-based control strategy, which is implemented through an error amplifier circuit. The domain-based control strategy includes a current domain, a charging domain, and a discharging domain. The error amplifier circuit collects the bus-side voltage and, after PI regulation with a reference voltage, outputs an adjustment signal.

[0009] When the adjustment signal is in the current distribution domain, the high-voltage isolation power controller stabilizes the bus voltage by controlling the solar array module;

[0010] When the adjustment signal is in the charging domain, the high-voltage isolated power controller controls the solar array module to stabilize the bus voltage, and at the same time controls the isolated charge and discharge regulation module to charge the high-voltage battery pack.

[0011] When the adjustment signal is in the discharge domain, the high-voltage isolated power controller controls the isolated charge-discharge adjustment module, which then supplies power from the high-voltage battery pack to the bus.

[0012] Furthermore, each of the solar array modules includes three shunt circuits for shunt regulation of the input power of the high-voltage solar array during sunlight periods to stabilize the bus voltage.

[0013] Furthermore, each of the isolated charge / discharge regulation modules includes one isolated bidirectional bridge circuit; the isolated bidirectional bridge circuit includes primary-side switches S1-S4, secondary-side switches Q1-Q4, an inductor, a transformer, an input capacitor, and an output capacitor; wherein, the input capacitor is connected in parallel with the high-voltage battery pack, the primary-side switches S1 and S2 are connected in series to form a first bridge arm connected in parallel with the input capacitor, the primary-side switches S3 and S4 are connected in series to form a second bridge arm connected in parallel with the input capacitor, the output capacitor is connected in parallel with the high-voltage bus, the secondary-side switches Q1 and Q2 are connected in series to form a third bridge arm connected in parallel with the output capacitor, and the secondary-side switches Q3 and Q4 are connected in series to form a fourth bridge arm connected in parallel with the output capacitor; the primary winding of the transformer is connected in series with the inductor and then connected at the midpoint of the two bridge arms of the primary full-bridge circuit, and the secondary winding of the transformer is connected at the midpoint of the two bridge arms of the secondary full-bridge circuit.

[0014] Furthermore, the isolated bidirectional bridge circuit controls the power flow direction by adjusting the phase shift angle between the primary and secondary switching transistors, enabling power supply from the battery side to the bus side during the shadow period and charging from the bus side to the battery side during the sunshine period; wherein:

[0015] During the shadow period, the high-voltage battery pack discharges. In the first half of the discharge control cycle, the primary-side switch S1 and S4 are turned on, and the secondary-side switch Q1 and Q4 are turned on with a timing lag behind the primary-side switch S1 and S4. In the second half of the discharge control cycle, the primary-side switch S2 and S3 are turned on, and the secondary-side switch Q2 and Q3 are turned on with a timing lag behind the primary-side switch S2 and S3. By adjusting the phase shift angle, the bus-side voltage is kept stable at a predetermined voltage.

[0016] During the sunlight period, the high-voltage battery pack is charged. In the first half of the charging control cycle, the secondary-side switches Q1 and Q4 are turned on, and the primary-side switches S1 and S4 are turned on with a timing lag behind the secondary-side switches Q1 and Q4. In the second half of the charging control cycle, the secondary-side switches Q2 and Q3 are turned on, and the primary-side switches S2 and S3 are turned on with a timing lag behind the secondary-side switches Q2 and Q3. By adjusting the phase shift angle, the high-voltage battery pack provides constant current charging, and the bus-side voltage is maintained stable by the aforementioned solar array module.

[0017] Furthermore, the high-voltage solar array adopts a wound mechanical structure, and the circuit of the high-voltage solar array is composed of a battery circuit unit consisting of multiple thin-film battery cells connected in series, ensuring that the operating point voltage of the unit circuit is above 300V, and calculating the output power based on the output current capability of the IV curve, and meeting the power requirements during the sunshine period by connecting multiple battery circuit units in parallel.

[0018] Furthermore, the high-voltage battery pack consists of 27.5Ah individual cells connected in parallel to a module with 64 cells in series, and its voltage range is from 205V to 268V. The power requirements during the shadow period are met through the parallel connection of multiple high-voltage battery pack modules.

[0019] Furthermore, the high-voltage power distribution unit is equipped with a solid-state protection circuit on each power distribution path to cut off the path when a short-circuit fault occurs in the load, so as to maintain the stability of the bus.

[0020] The high-power satellite energy system architecture based on a novel high-voltage bus provided by this invention consists of a high-voltage solar array, a high-voltage battery pack, a high-voltage isolated power controller, and a high-voltage power distribution unit. Its core lies in employing a novel isolated bidirectional bridge circuit topology, addressing the challenge of traditional charging and discharging circuits being unsuitable at 300V voltage levels. The high-voltage isolated power controller adopts a modular design, integrating a solar array module with shunt functionality and a charging / discharging regulation module using an isolated bidirectional bridge circuit. A domain-specific control strategy based on error amplification signals is used to achieve stable regulation of the bus. Thus, by increasing the bus voltage level, optimizing the power conversion topology, and refining the control method, this invention effectively reduces system transmission losses, increasing the energy system power density to more than twice that of traditional 100V architectures. This allows for a single satellite to achieve ultra-high power output of hundreds of kilowatts within the same volume and weight constraints, while also possessing excellent scalability. Attached Figure Description

[0021] Figure 1 A schematic diagram of the high-power satellite energy system architecture based on a novel high-voltage bus provided in an embodiment of the present invention;

[0022] Figure 2 A circuit diagram of the high-power satellite energy system architecture based on a novel high-voltage bus provided in an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the domain control strategy of the high-power satellite energy system architecture based on a novel high-voltage bus provided in an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the topology of the isolated bidirectional bridge circuit in a high-power satellite energy system architecture based on a novel high-voltage bus provided in an embodiment of the present invention;

[0025] Figures 5a-5b The waveform diagrams of the isolated bidirectional bridge circuit during the shadow period and the illumination period of the high-power satellite energy system architecture based on a novel high-voltage bus provided in an embodiment of the present invention are shown. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0027] It should be noted that references to "an embodiment," "embodiment," "example embodiment," etc., in this specification refer to the described embodiment including specific features, structures, or characteristics, but not every embodiment must include these specific features, structures, or characteristics. Furthermore, such expressions do not refer to the same embodiment. Moreover, when describing specific features, structures, or characteristics in conjunction with embodiments, whether or not explicitly described, it is indicated that incorporating such features, structures, or characteristics into other embodiments is within the knowledge of those skilled in the art.

[0028] Furthermore, certain terms are used in the specification and subsequent claims to refer to specific components or parts. Those skilled in the art will understand that manufacturers may use different names or terms to refer to the same component or part. This specification and subsequent claims do not distinguish components or parts by differences in name, but rather by differences in function. The terms "comprising" and "including" used throughout the specification and subsequent claims are open-ended and should be interpreted as "including but not limited to." Additionally, the term "connection" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connections made through other means.

[0029] The 100V single-bus power architecture widely used on satellites cannot adapt to the wide voltage variation range brought about by the increase in voltage level on the battery side, and traditional boost and buck circuits cannot adapt to the new power levels. Therefore, to overcome the problem that current mainstream satellite platforms cannot support ultra-high power loads at the 100V voltage level, this invention provides a high-power satellite power system architecture based on a novel high-voltage bus. By increasing the bus voltage level to 300V, optimizing the power regulation topology, and reducing end-to-end losses, it achieves a significant increase in power level for the same weight or volume, enabling single-satellite power to exceed 100 kilowatts.

[0030] The following description, in conjunction with the accompanying drawings, provides a more detailed account of an embodiment of a high-power satellite energy system architecture based on a novel high-voltage bus.

[0031] Figures 1-2 This invention illustrates a high-power satellite energy system architecture 100 based on a novel high-voltage bus, comprising a high-voltage solar array 10, a high-voltage battery pack 20, a high-voltage isolated power controller 30, and a high-voltage power distribution unit 40. The high-voltage isolated power controller 30 is used to regulate the electrical energy provided by the high-voltage solar array 10 and the high-voltage battery pack 20 to form a single, fully regulated high-voltage bus with a voltage level of 300V or higher. The voltage of the high-voltage bus is 300V, and the high-voltage power distribution unit 40 distributes power to the onboard loads.

[0032] The high-voltage isolated power controller 30 includes several solar array modules, several isolated battery charge and discharge regulation (IBCDR) modules, at least two telemetry and remote control modules, capacitor modules, and a backplane assembly. Each solar array module is connected to a battery array in the high-voltage solar panel 10 to obtain electrical energy. Each isolated charge and discharge regulation module is connected to the high-voltage battery pack 20 to control the charging and discharging of the high-voltage battery pack 20. The capacitor modules are used to stabilize the bus voltage. The backplane assembly is used to connect the mechanical and electrical interfaces of each module.

[0033] The isolated charge / discharge regulation module employs an isolated circuit topology to ensure stable and reliable output under input conditions with a wide range of battery voltage variations. The telemetry and remote control module is responsible for parsing remote control commands and transmitting telemetry data. A completely independent master-slave design is preferred, therefore at least two modules are required. The capacitor module is used to stabilize the 300V bus voltage. The backplane assembly connects the mechanical and electrical interfaces of all the above modules. Taking a 100kW power level as an example, this high-voltage isolated power controller is configured with 8 solar array modules, 10 IBCDR modules, 2 telemetry and remote control modules, 1 capacitor module, and 1 backplane assembly.

[0034] The high-voltage isolation power supply controller 30 in this embodiment adopts a domain-based control strategy, which is implemented through an error amplifier circuit. The domain-based control strategy includes a current domain, a charging domain, and an amplification domain. The error amplifier circuit collects the bus-side voltage and, after PI regulation with a reference voltage, outputs an adjustment signal.

[0035] When the regulation signal is in the current shunt domain, the high-voltage isolated power supply controller 30 stabilizes the bus voltage by controlling the solar array module; when the regulation signal is in the charging domain, the high-voltage isolated power supply controller 30 stabilizes the bus voltage by controlling the solar array module, and simultaneously controls the isolated charge-discharge regulation module to charge the high-voltage battery pack 20; when the regulation signal is in the discharge domain, the high-voltage isolated power supply controller 30 controls the isolated charge-discharge regulation module, allowing the high-voltage battery pack 20 to supply power to the bus through the isolated charge-discharge regulation module.

[0036] The high-voltage isolation power supply controller 30 employs a domain-based control strategy to achieve stable control of the 300V bus voltage. This strategy is implemented through its internal error amplifier circuit. The error amplifier circuit acquires the bus-side voltage V. bus Compare it with the reference voltage V REF The comparison is performed, and after PI regulation, an adjustment signal V is output. MEA According to V MEAThe numerical range of V divides the control domain into a current shunt domain, a charging domain, and a discharging domain: when V MEA When in the branching domain, the controller mainly stabilizes the bus voltage by controlling the solar array module; when V MEA When in the charging domain, the controller stabilizes the bus voltage through the solar array module while controlling the isolated charge / discharge regulation module to charge the high-voltage battery pack; when V MEA When in the discharge domain, the high-voltage battery pack supplies power to the bus via an isolated charge-discharge regulation module. This unified control strategy ensures that the system can output stable bus voltage and power during both shadow and sunshine periods. The specific control logic is as follows: Figure 3 As shown.

[0037] Furthermore, each solar array module includes three shunt circuits for shunt regulation of the input power of the high-voltage solar array during sunlight periods to stabilize the bus voltage.

[0038] See Figure 4 Each of the isolated charge / discharge regulation modules includes one isolated bidirectional bridge circuit; the isolated bidirectional bridge circuit includes primary-side switches S1 to S4, secondary-side switches Q1 to Q4, inductor Lr, transformer K, and input capacitor C. in and output capacitor C out Among them, the input capacitor C in Connected in parallel with the high-voltage battery pack 20, the primary-side switch S1 and primary-side switch S2 are connected in series to form the first bridge arm and the input capacitor C. in The primary-side switches S3 and S4 are connected in parallel, forming the second bridge arm with the input capacitor C. in Parallel connection, output capacitor C out Connected in parallel with the high-voltage bus, secondary-side switch Q1 and secondary-side switch Q2 are connected in series to form the third bridge arm and the output capacitor C. out The secondary-side switches Q3 and Q4 are connected in parallel, forming the fourth bridge arm with the output capacitor C. out The transformer K is connected in parallel; its primary winding is connected in series with inductor Lr and then connected at the midpoint of the two arms of the primary full-bridge circuit. The secondary winding of transformer K is connected at the midpoint of the two arms of the secondary full-bridge circuit. The voltage range of the high-voltage battery pack 20 is between 205 and 268V. When this power conversion topology is working, the two switches on the same arm are complementaryly turned on at 180° within the same control cycle, and all diagonally opposite switches are either simultaneously on or simultaneously off.

[0039] Specifically, the isolated bidirectional bridge circuit controls the power flow direction by adjusting the phase shift angle φ between the primary and secondary switching transistors, enabling power supply from the battery side to the bus side during the shadow period and charging from the bus side to the battery side during the sunshine period; the phase shift angle φ refers to the lag angle; wherein:

[0040] During the shadow period, the high-voltage battery pack discharges. In the first half of the discharge control cycle, the primary-side switches S1 and S4 are turned on, and the secondary-side switches Q1 and Q4 are turned on with a timing lag behind the primary-side switches S1 and S4. In the second half of the discharge control cycle, the primary-side switches S2 and S3 are turned on, and the secondary-side switches Q2 and Q3 are turned on with a timing lag behind the primary-side switches S2 and S3. By adjusting the phase shift angle, the bus-side voltage is kept stable at a predetermined voltage. That is, in the first half of the control cycle, the primary-side switches S1 and S4 are turned on, and the secondary-side switches Q1 and Q3 are turned on with a timing lag behind the primary-side switches S2 and S3. When primary-side switches S1 / S4 and secondary-side switches Q1 / Q4 are turned on, the remaining switches are turned off. It is assumed that the turn-on of Q1 / Q4 lags behind S1 / S4 by a phase shift angle φ. During this cycle, power flows from the leading phase side to the lagging phase side; that is, power originates from V1, passes through inductor Lr and transformer K, and is ultimately transferred to V2, enabling power transfer from the battery side V1 to the bus side V2. In the second half of the cycle, primary-side switches S2 / S3 and secondary-side switches Q2 / Q3 are turned on, while the remaining switches are turned off. The turn-on of Q2 / Q3 lags behind S2 / S3 by the same lag angle φ, and the power flow direction remains unchanged. This cycle repeats continuously. During this period, the battery discharges, causing voltage changes. The voltage can be stabilized at 300V by adjusting the phase shift angle φ to maintain battery power supply to the bus.

[0041] During the sunlight period, the high-voltage battery pack is charged. In the first half of the charging control cycle, the secondary-side switches Q1 and Q4 are turned on, and the primary-side switches S1 and S4 are turned on with a timing lag behind the secondary-side switches Q1 and Q4. In the second half of the charging control cycle, the secondary-side switches Q2 and Q3 are turned on, and the primary-side switches S2 and S3 are turned on with a timing lag behind the secondary-side switches Q2 and Q3. By adjusting the phase shift angle, constant current charging is provided to the high-voltage battery pack, and the bus-side voltage is maintained stable by the aforementioned solar array module. At this point, the circuit topology operates on the same principle as during the shadow period, except that in the first half of the control cycle, Q1 / Q4 conducts ahead of S1 / S4 by a phase shift angle φ. In the second half of the cycle, Q2 / Q3 conducts ahead of S2 / S3 by the same angle φ. Power flows from the bus side to the battery side, triggered by V2, passing through inductor Lr and transformer K, and finally reaching the V1 side. During this period, the battery charges, and its voltage changes. However, constant current charging to the battery can still be achieved by adjusting the phase shift angle φ.

[0042] The main waveforms of the switching transistor and inductor during power transfer in the shadow and illumination periods are shown in Figures 5(a) and 5(b), where S1~S4 and Q1~Q4 are the switching pulses of the switching transistor, u pu is the primary voltage of the transformer. s i is the secondary voltage of the secondary transformer. Lr The phase shift angle between the primary and secondary sides is φ, which is used to assist the current in the inductor.

[0043] The high-voltage solar panel 10 serves as the energy input for the high-voltage isolated power controller 30 during sunlight. To achieve a power level of 100kW, the mechanical parts are wound to maximize their high storage ratio and high power density. The circuitry uses lightweight thin-film batteries, with each battery circuit unit consisting of approximately 160 thin-film battery cells connected in series, achieving a voltage level of over 300V. The current capacity is expanded through parallel connection of multiple units, achieving a single-panel power of 50kW.

[0044] The high-voltage battery pack 20 serves as the energy input for the high-voltage isolated power controller 30 during the shadow period. To match the input voltage range of the dual active bridge circuit in the IBCDR module, each high-voltage battery pack 10 uses 27.5Ah individual cells connected in parallel (64 cells in series). The battery voltage range is 205–268V, meeting the IBCDR module's input voltage range requirement of 180–285V. This design can improve current capacity and overall power level by increasing the number of modules connected in parallel.

[0045] The high-voltage power distribution unit 40 enables reliable power distribution to each load on the satellite. It is equipped with a solid-state protection circuit on each power distribution path to promptly disconnect the path in case of faults such as short circuits in the load, so as not to affect the stability of the bus.

[0046] In summary, the high-power satellite energy system architecture based on a novel high-voltage bus provided by this invention increases the bus voltage level to 300V and constructs a collaborative system consisting of a high-voltage solar array, a high-voltage battery pack, a modular high-voltage isolated power controller, and a high-voltage power distribution unit. An isolated charge-discharge regulation module with an isolated bidirectional bridge circuit is employed for wide-range voltage adaptation and bidirectional power flow. Combined with a three-domain (shunt, charge, discharge) control strategy based on regulation signals, intelligent energy management and precise bus voltage stabilization are achieved. Thus, this invention, under limited size and weight constraints, can increase the system power density to more than twice that of traditional architectures, supporting ultra-high power output of hundreds of kilowatts per satellite, and possesses excellent scalability and engineering application value.

[0047] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of the present invention is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0048] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A high-power satellite energy system architecture based on a new type of high-voltage bus, characterized in that, The high-voltage solar wing, the high-voltage battery pack, the high-voltage isolated power supply controller and the high-voltage power distribution unit are included; the high-voltage isolated power supply controller is used for adjusting the electric energy provided by the high-voltage solar wing and the high-voltage battery pack to form a single full-adjusted high-voltage bus with a voltage level of 300V or above, and the high-voltage power distribution unit is used for power distribution for on-board loads; The high-voltage isolated power supply controller includes a plurality of solar array modules, a plurality of isolated charging and discharging adjustment modules, at least two telemetry and remote control modules, a capacitor module and a backplane assembly; each solar array module is connected with a battery subarray in the high-voltage solar wing to obtain electric energy; each isolated charging and discharging adjustment module is connected with the high-voltage battery pack to realize charging and discharging control of the high-voltage battery pack; the capacitor module is used for stabilizing the bus voltage from transient fluctuations; and the backplane assembly is used for connecting mechanical and circuit interfaces of each module.

2. The new type of high voltage bus based large power satellite energy system architecture according to claim 1, characterized in that, The high-voltage isolated power supply controller adopts a domain control strategy and is realized through an error amplification circuit; the domain control strategy includes a shunt domain, a charging domain and a discharging domain; the error amplification circuit collects the bus side voltage and outputs an adjustment signal after PI adjustment with a reference voltage; When the adjustment signal is in the shunt domain, the high-voltage isolated power supply controller stabilizes the bus voltage by controlling the solar array module; When the adjustment signal is in the charging domain, the high-voltage isolated power supply controller stabilizes the bus voltage by controlling the solar array module and controls the isolated charging and discharging adjustment module to charge the high-voltage battery pack; When the adjustment signal is in the discharging domain, the high-voltage isolated power supply controller controls the isolated charging and discharging adjustment module to supply power to the bus from the high-voltage battery pack through the isolated charging and discharging adjustment module.

3. The new high-voltage bus-based large power satellite energy system architecture according to claim 1 or 2, characterized in that, Each solar array module includes a three-way shunt circuit for shunt adjustment of input power of the high-voltage solar wing during the light period to stabilize the bus voltage.

4. The new type of high-voltage bus-based large-power satellite energy system architecture according to claim 1 or 2, characterized in that, Each isolated charging and discharging adjustment module includes an isolated bidirectional bridge circuit; the isolated bidirectional bridge circuit includes primary side switch tubes S1-S4, secondary side switch tubes Q1-Q4, an inductor, a transformer, an input capacitor and an output capacitor; the input capacitor is connected in parallel with the high-voltage battery pack, the primary side switch tube S1 and the primary side switch tube S2 are connected in series to form a first bridge arm connected in parallel with the input capacitor, the primary side switch tube S3 and the primary side switch tube S4 are connected in series to form a second bridge arm connected in parallel with the input capacitor, the output capacitor is connected in parallel with the high-voltage bus, the secondary side switch tube Q1 and the secondary side switch tube Q2 are connected in series to form a third bridge arm connected in parallel with the output capacitor, and the secondary side switch tube Q3 and the secondary side switch tube Q4 are connected in series to form a fourth bridge arm connected in parallel with the output capacitor; the primary winding of the transformer is connected at the midpoint of the two bridge arms of the primary side full-bridge circuit after being connected in series with the inductor, and the secondary winding of the transformer is connected at the midpoint of the two bridge arms of the secondary side full-bridge circuit.

5. The new high-voltage bus-based large power satellite energy system architecture of claim 4, wherein, The isolated bidirectional bridge circuit controls the power flow by adjusting the phase shift angle between the primary side and the secondary side switch tubes, and realizes the power supply from the battery side to the bus side in the eclipse period, and realizes the charging from the bus side to the battery side in the illumination period. In the eclipse period, the high-voltage storage battery pack is discharged, in the first half of the discharge control period, the primary side switch tube S1 and the primary side switch tube S4 are controlled to be turned on, and the secondary side switch tube Q1 and the secondary side switch tube Q4 are controlled to be turned on in a time sequence lagging behind the primary side switch tube S1 and the primary side switch tube S4; in the second half of the discharge control period, the primary side switch tube S2 and the primary side switch tube S3 are controlled to be turned on, and the secondary side switch tube Q2 and the secondary side switch tube Q3 are controlled to be turned on in a time sequence lagging behind the primary side switch tube S2 and the primary side switch tube S3; the phase shift angle is adjusted to maintain the bus side voltage stable at a predetermined voltage; In the illumination period, the high-voltage storage battery pack is charged, in the first half of the charge control period, the secondary side switch tube Q1 and the secondary side switch tube Q4 are controlled to be turned on, and the primary side switch tube S1 and the primary side switch tube S4 are controlled to be turned on in a time sequence lagging behind the secondary side switch tube Q1 and the secondary side switch tube Q4; in the second half of the charge control period, the secondary side switch tube Q2 and the secondary side switch tube Q3 are controlled to be turned on, and the primary side switch tube S2 and the primary side switch tube S3 are controlled to be turned on in a time sequence lagging behind the secondary side switch tube Q2 and the secondary side switch tube Q3; the phase shift angle is adjusted to provide constant current charging for the high-voltage storage battery pack.

6. The new type of high voltage bus based large power satellite energy system architecture of claim 1, wherein, The high-voltage solar wing adopts a mechanical structure in a winding form, and the circuit of the high-voltage solar wing is composed of a battery circuit unit composed of a plurality of thin film battery pieces in series, so as to ensure that the operating point voltage of the unit circuit is above 300V, and the output power is calculated according to the output current capacity of the IV curve, and the power demand in the illumination period is met by parallel connection of a plurality of the battery circuit units.

7. The new type of high voltage bus based large power satellite energy system architecture of claim 1, wherein, The high-voltage storage battery pack is composed of 27.5Ah single batteries through a 2-parallel-64-series module, and the voltage variation range is 205V to 268V.

8. The new type of high voltage bus based large power satellite energy system architecture of claim 1, wherein, The high-voltage power distribution unit is provided with a solid state protection circuit on each power distribution path, which is used to cut off the path when a short circuit fault occurs in the load, so as to maintain the stability of the bus.

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