Software-defined variable-structure power module-based power supply and multi-power-system power supply method
By adopting the same dual-active bridge and three-phase bridge module design in the software-defined variable structure power module, multi-electric voltage output was achieved, solving the problems of insufficient equipment maintainability and reliability, and improving the standardization and modularity of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA STATE SHIPBUILDING CORP LTD RESEARCH INSTITUTE 719
- Filing Date
- 2025-11-24
- Publication Date
- 2026-04-21
AI Technical Summary
Existing software-defined variable structure distributed power devices have shortcomings in terms of maintainability and reliability. The internal structure of the devices is complex, there are many types of power modules, and the failure of any module can affect the output of the devices.
The power supply design adopts a software-defined variable structure power module, which includes three output voltage modules connected in parallel at the input. Each module consists of the same dual active bridge module and three-phase bridge module. Different voltage outputs are achieved through software definition, reducing the types of hardware and improving module redundancy.
It improves the maintainability and reliability of the equipment, simplifies the hardware structure, reduces the types of equipment maintenance spare parts, enhances the standardization and modularity of the equipment, and ensures that spare modules can be used to replace modules in case of failure.
Smart Images
Figure CN121906684A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of multi-power supply technology, and more specifically, to a power supply based on a software-defined variable structure power module and a multi-power supply method. Background Technology
[0002] Reference [1] proposes a software-defined variable structure distributed power device design method, which integrates power conversion modules with different functions into one device and uses a mode selection switch to enable the power supply to work in different modes. Although this scheme can achieve different functions through software definition, the internal structure of the device is complex, the power modules are of various types, the device redundancy is poor, and it is not conducive to device maintenance. Reference [2] combines the same power conversion modules through IGBT modules to achieve variable structure output of the device. Although this method unifies the types of power conversion modules, the failure of any module will affect the device output, thereby reducing the reliability of the device.
[0003] How to balance maintainability and reliability of software-defined variable structure distributed power devices is an urgent problem to be solved.
[0004] [1] Zhang Xiaofeng, Li Haijin. Design of spacecraft distributed power system based on software definition [J]. Spacecraft Engineering, 29(2), 51-58. [2] Li Mengxi. Ultra-wide output range DC power supply system based on online variable structure [D]. Nanjing University of Aeronautics and Astronautics. Summary of the Invention The purpose of this invention is to provide a power supply and a multi-mode power supply method based on a software-defined variable structure power module, which can realize multi-mode power supply through software definition, thereby improving the maintainability and reliability of the power supply.
[0005] This invention provides a power supply based on a software-defined variable structure power module, including a first output voltage module, a second output voltage module, and a third output voltage module connected in parallel at their input terminals; the first output voltage module includes a first software-defined variable structure power module and a first filter module connected in series, the second output voltage module includes a second software-defined variable structure power module and a second filter module connected in series, and the third output voltage module includes a third software-defined variable structure power module and a third filter module connected in series.
[0006] Furthermore, the input voltage of the power supply based on the software-defined variable structure power module is DC 700V to DC 900V, the output voltage of the first output voltage module is DC 230V, the output voltage of the second output voltage module is AC 230V, and the output voltage of the third output voltage module is DC 390V.
[0007] Furthermore, the first software-defined variable structure power module, the second software-defined variable structure power module, and the third software-defined variable structure power module have the same topology, each including a dual active bridge module and a three-phase bridge module connected in series.
[0008] Furthermore, the dual active bridge module includes a primary-side DC capacitor, a primary-side full bridge, an auxiliary inductor, a high-frequency transformer, a secondary-side full bridge, and a secondary-side DC capacitor.
[0009] Furthermore, the primary-side DC capacitor is connected in parallel with the primary-side full bridge, the primary-side full bridge and the auxiliary inductor are connected to the primary side of the high-frequency transformer, the secondary side of the high-frequency transformer is connected to the secondary-side full bridge, and the secondary-side full bridge is connected in parallel with the secondary-side DC capacitor.
[0010] Furthermore, the three-phase bridge module includes an input capacitor, a first power switch circuit, a second power switch circuit, a third power switch circuit, a fourth power switch circuit, a fifth power switch circuit, and a sixth power switch circuit. One end of the first power switch circuit and one end of the second power switch circuit are connected in series to form the midpoint of the first upper and lower arms. One end of the third power switch circuit and one end of the fourth power switch circuit are connected in series to form the midpoint of the second upper and lower arms. One end of the fifth power switch circuit and one end of the sixth power switch circuit are connected in series to form the midpoint of the third upper and lower arms. The other ends of the first, third, and fifth power switch circuits are connected in parallel to connect to the positive DC terminal. The other ends of the second, fourth, and sixth power switch circuits are connected in parallel to connect to the negative DC terminal. The two ends of the input capacitor are respectively connected to the other ends of the first and second power switch circuits.
[0011] Furthermore, the first filtering module includes a first-phase inductor, a second-phase inductor, a third-phase inductor, and a first output capacitor. One end of the first-phase inductor, the second-phase inductor, the third-phase inductor, and the first output capacitor are respectively connected to the midpoints of the first upper and lower arms, the second upper and lower arms, and the third upper and lower arms. The other ends of the first-phase inductor, the second-phase inductor, and the third-phase inductor are connected in parallel and then connected to one end of the first output capacitor. The other end of the first output capacitor is used to connect to the negative terminal of the three-phase bridge module.
[0012] Furthermore, the second filtering module includes a second output inductor and a second output capacitor. One end of the second output inductor is connected to the midpoint of the first upper and lower arms, the other end of the second output inductor is connected to one end of the second output capacitor, and the other end of the second output capacitor is connected to the midpoint of the third upper and lower arms.
[0013] Furthermore, the third filtering module includes a third output inductor and a third output capacitor. One end of the third output inductor is connected to the midpoint of the first upper and lower arms, and the other end of the third output inductor is connected to one end of the third output capacitor. The other end of the third output capacitor is connected to the midpoint of the third upper and lower arms.
[0014] The present invention also provides a multi-power supply method, comprising: using a power supply based on a software-defined variable structure power module as described in any one of claims 1-9 to perform multi-power supply.
[0015] The power supply and multi-mode power supply method based on software-defined variable structure power modules provided by this invention has the following beneficial effects: This invention achieves different voltage outputs using a universal software-defined variable structure power module. The hardware topology of each power module is identical. The key technical point lies in exploring a hardware topology that can simultaneously support DC230V, AC230V, and AC390V output voltages. The software-defined variable structure power module uses a three-phase bridge to achieve the above functions. It is simple in structure, stable, and reliable. The triple interleaved parallel BUCK, single-phase inverter, and three-phase inverter are implemented through software definition, requiring no changes to the hardware. Compared to existing variable structure power supplies, it offers higher reliability, fewer power module types, and is easier to maintain.
[0016] This invention reduces the types of power conversion modules, improves equipment reliability, and enables multi-system output. The power supply design method proposed in this invention incorporates multiple universal power conversion modules, each with the same hardware structure, and different outputs can be achieved through software definition. Compared to existing solutions, this invention uses only one type of power conversion module, resulting in a simpler structure, easier debugging and production, and improved equipment redundancy through its universal design. Furthermore, this invention achieves different power system outputs through the power conversion modules themselves, without relying on external IGBT modules to alter the main circuit structure. Even if a module fails, a backup module can be used for replacement, thereby enhancing equipment reliability.
[0017] In summary, this invention improves the standardization, generalization, and modularity of equipment, reduces the types of spare parts required for equipment maintenance, and enhances equipment reliability. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is the power supply schematic diagram of the software-defined variable structure power module provided by the present invention; Figure 2 This is a circuit topology diagram of a software-defined variable structure power module provided by the present invention; Wherein, (a) is the circuit topology diagram of the DAB module, and (b) is the circuit topology diagram of the three-phase bridge module; Figure 3 This is the equivalent working topology diagram of the three-phase bridge module in DC230V output mode provided by the present invention; Figure 4 This is the equivalent working topology diagram of the three-phase bridge module in AC230V output mode provided by the present invention; Figure 5 This is the equivalent working topology diagram of the three-phase bridge module in AC390V output mode provided by the present invention. Detailed Implementation
[0019] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0020] Figure 1 A schematic diagram of a power supply based on a software-defined variable structure power module according to this embodiment is shown. In this embodiment, the power supply based on the software-defined variable structure power module includes a first output voltage module, a second output voltage module, and a third output voltage module connected in parallel at their input terminals; the first output voltage module includes a first software-defined variable structure power module and a first filter module connected in series; the second output voltage module includes a second software-defined variable structure power module and a second filter module connected in series; and the third output voltage module includes a third software-defined variable structure power module and a third filter module connected in series. In one exemplary embodiment, the input voltage of the power supply based on the software-defined variable structure power module is DC 700V to DC 900V, the output voltage of the first output voltage module is DC 230V, the output voltage of the second output voltage module is AC 230V, and the output voltage of the third output voltage module is DC 390V. In one exemplary embodiment, the first software-defined variable structure power module, the second software-defined variable structure power module, and the third software-defined variable structure power module have the same topology, each including a dual active bridge module and a three-phase bridge module connected in series. In one exemplary embodiment, the dual active bridge module includes a primary-side DC capacitor, a primary-side full bridge, an auxiliary inductor, a high-frequency transformer, a secondary-side full bridge, and a secondary-side DC capacitor. In one exemplary embodiment, the primary-side DC capacitor is connected in parallel with the primary-side full bridge, the primary-side full bridge and the auxiliary inductor are connected to the primary side of the high-frequency transformer, the secondary side of the high-frequency transformer is connected to the secondary-side full bridge, and the secondary-side full bridge is connected in parallel with the secondary-side DC capacitor. In one exemplary embodiment, the three-phase bridge module includes an input capacitor, a first power switch circuit, a second power switch circuit, a third power switch circuit, a fourth power switch circuit, a fifth power switch circuit, and a sixth power switch circuit. One end of the first power switch circuit and one end of the second power switch circuit are connected in series to form the midpoint of the first upper and lower arms. One end of the third power switch circuit and one end of the fourth power switch circuit are connected in series to form the midpoint of the second upper and lower arms. One end of the fifth power switch circuit and one end of the sixth power switch circuit are connected in series to form the midpoint of the third upper and lower arms. The other ends of the first, third, and fifth power switch circuits are connected in parallel to connect to the positive DC terminal. The other ends of the second, fourth, and sixth power switch circuits are connected in parallel to connect to the negative DC terminal. The two ends of the input capacitor are respectively connected to the other ends of the first and second power switch circuits. In one exemplary embodiment, the first filtering module includes a first-phase inductor, a second-phase inductor, a third-phase inductor, and a first output capacitor. One end of the first-phase inductor, the second-phase inductor, the third-phase inductor, and the first output capacitor are respectively connected to the midpoints of the first upper and lower arms, the second upper and lower arms, and the third upper and lower arms. The other ends of the first-phase inductor, the second-phase inductor, and the third-phase inductor are connected in parallel and then connected to one end of the first output capacitor. The other end of the first output capacitor is used to connect to the negative terminal of the three-phase bridge module. In one exemplary embodiment, the second filtering module includes a second output inductor and a second output capacitor. One end of the second output inductor is connected to the midpoint of the first upper and lower arms, the other end of the second output inductor is connected to one end of the second output capacitor, and the other end of the second output capacitor is connected to the midpoint of the third upper and lower arms. In one exemplary embodiment, the third filtering module includes a third output inductor and a third output capacitor. One end of the third output inductor is connected to the midpoint of the first upper and lower arms, and the other end of the third output inductor is connected to one end of the third output capacitor. The other end of the third output capacitor is connected to the midpoint of the third upper and lower arms. This embodiment provides a multi-power supply method, including: using the power supply based on the software-defined variable structure power module to provide multi-power supply.
[0021] In some embodiments, the above-described multi-power supply method can also be implemented in the following ways.
[0022] In this embodiment, Figure 1 This is a framework diagram of the present invention. The input voltage is DC700~900V, and the output is three power systems: DC230V, AC230V and DC390V. Each output is generated by the input voltage through a software-defined variable structure power module with the same topology and different LC filter modules.
[0023] Figure 2 This describes the circuit topology of the DAB module and the three-phase bridge module in a software-defined variable structure power module. The front-end DAB module converts the input voltage from DC 700~900V to DC 900V and isolates the primary and secondary sides through a high-frequency transformer, ensuring the electrical safety of the primary and secondary sides while increasing the module's electromagnetic compatibility. The DAB module topology parameters remain consistent across the three output modes. When outputting different voltage systems, the three-phase bridge module, with the same topology, operates in different modes by software-defining the operating states of each switch. It should be noted that the Dual Active Bridge (DAB) module is a high-efficiency isolated DC-DC converter based on a dual active bridge topology, achieving bidirectional power flow through a high-frequency transformer and phase-shift control. Figure 3 It is the equivalent working topology of the three-phase bridge module in DC230V output mode. It uses triple interleaved parallel BUCK to reduce the DC900V output voltage of the DAB module to DC230V. Figure 4 It is the equivalent working topology of the three-phase bridge module in AC230V output mode, which uses a single-phase inverter to convert the DC900V voltage output by the DAB module into AC230V voltage. Figure 5 It is the equivalent working topology of the three-phase bridge module in AC390V output mode, which uses a three-phase inverter to convert the DC900V voltage output by the DAB module into AC390V voltage.
[0024] It should be noted that, in this embodiment, the figure... The selection of components is shown in Table 1: Table 1: Component Selection Table
[0025] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.
Claims
1. A power supply based on a software-defined variable structure power module, characterized in that, It includes a first output voltage module, a second output voltage module, and a third output voltage module connected in parallel at their input terminals; the first output voltage module includes a first software-defined variable structure power module and a first filter module connected in series, the second output voltage module includes a second software-defined variable structure power module and a second filter module connected in series, and the third output voltage module includes a third software-defined variable structure power module and a third filter module connected in series.
2. The power supply based on a software-defined variable structure power module according to claim 1, characterized in that, The power supply based on the software-defined variable structure power module has an input voltage of DC 700V to DC 900V, an output voltage of DC 230V for the first output voltage module, an output voltage of AC 230V for the second output voltage module, and an output voltage of DC 390V for the third output voltage module.
3. The power supply based on a software-defined variable structure power module according to claim 1, characterized in that, The first, second, and third software-defined variable structure power modules have the same topology, each including a dual active bridge module and a three-phase bridge module connected in series.
4. The power supply based on a software-defined variable structure power module according to claim 3, characterized in that, The dual active bridge module includes a primary-side DC capacitor, a primary-side full bridge, an auxiliary inductor, a high-frequency transformer, a secondary-side full bridge, and a secondary-side DC capacitor.
5. The power supply based on a software-defined variable structure power module according to claim 4, characterized in that, The primary-side DC capacitor is connected in parallel with the primary-side full bridge. The primary-side full bridge and the auxiliary inductor are connected to the primary side of the high-frequency transformer. The secondary side of the high-frequency transformer is connected to the secondary-side full bridge. The secondary-side full bridge is connected in parallel with the secondary-side DC capacitor.
6. The power supply based on a software-defined variable structure power module according to claim 3, characterized in that, The three-phase bridge module includes an input capacitor, a first power switch circuit, a second power switch circuit, a third power switch circuit, a fourth power switch circuit, a fifth power switch circuit, and a sixth power switch circuit. One end of the first power switch circuit and one end of the second power switch circuit are connected in series to form the midpoint of the first upper and lower arms. One end of the third power switch circuit and one end of the fourth power switch circuit are connected in series to form the midpoint of the second upper and lower arms. One end of the fifth power switch circuit and one end of the sixth power switch circuit are connected in series to form the midpoint of the third upper and lower arms. The other ends of the first, third, and fifth power switch circuits are connected in parallel to connect to the positive DC terminal. The other ends of the second, fourth, and sixth power switch circuits are connected in parallel to connect to the negative DC terminal. The two ends of the input capacitor are respectively connected to the other ends of the first and second power switch circuits.
7. The power supply based on a software-defined variable structure power module according to claim 6, characterized in that, The first filtering module includes a first-phase inductor, a second-phase inductor, a third-phase inductor, and a first output capacitor. One end of the first-phase inductor, the second-phase inductor, the third-phase inductor, and the first output capacitor are respectively connected to the midpoints of the first upper and lower arms, the second upper and lower arms, and the third upper and lower arms. The other ends of the first-phase inductor, the second-phase inductor, and the third-phase inductor are connected in parallel and then connected to one end of the first output capacitor. The other end of the first output capacitor is used to connect to the negative terminal of the three-phase bridge module.
8. The power supply based on a software-defined variable structure power module according to claim 6, characterized in that, The second filter module includes a second output inductor and a second output capacitor. One end of the second output inductor is connected to the midpoint of the first upper and lower arms, and the other end of the second output inductor is connected to one end of the second output capacitor. The other end of the second output capacitor is connected to the midpoint of the third upper and lower arms.
9. The power supply based on a software-defined variable structure power module according to claim 6, characterized in that, The third filtering module includes a third output inductor and a third output capacitor. One end of the third output inductor is connected to the midpoint of the first upper and lower arms, and the other end of the third output inductor is connected to one end of the third output capacitor. The other end of the third output capacitor is connected to the midpoint of the third upper and lower arms.
10. A multi-power supply method, characterized in that, include: Multi-mode power supply is performed using a power supply based on a software-defined variable structure power module as described in any one of claims 1-9.