Energy system applied to mobile test bed of aviation hybrid electric power device

Abstract

The invention provides an energy system applied to a mobile test bed of an aviation hybrid electric power device, and belongs to the technical field of aviation power. The energy system comprises a test bed energy subsystem, the test bed energy subsystem comprises a first power battery pack, the first power battery pack is in bidirectional connection with a bidirectional converter and a bidirectional inverter which are connected in parallel, the bidirectional converter is in unidirectional connection with an energy management controller, and the bidirectional inverter is in bidirectional connection with a bidirectional permanent magnet synchronous motor; the hybrid electric power energy subsystem comprises a power generation unit, the power generation unit is in one-way connection with a first port of a confluence unit, a second port of the confluence unit is in two-way connection with the energy storage unit, a third port of the confluence unit is in one-way connection with the power output unit, and a fourth port of the confluence unit is in two-way connection with the two-way converter. The energy efficiency maximization and the use cost minimization of the whole energy system can be realized.

Description

Technical Field

[0001] This application relates to the field of aviation power technology, and in particular to an energy system applied to a mobile test stand for aviation hybrid electric power units. Background Technology

[0002] With the global aviation industry's shift towards low-carbon and emission-reduction development, hybrid electric power systems have become an important development direction in the field of aviation power technology due to their significant advantages in controlling energy consumption and reducing pollutant emissions. Their widespread application is widely regarded as one of the core supports for the aviation industry's low-carbon transformation. To ensure the design rationality, operational reliability, and performance stability of hybrid electric power systems, comprehensive ground testing during the development phase is crucial. This testing allows for multi-dimensional compliance verification of the hybrid electric power system design, providing key technical support for subsequent installation and application.

[0003] To address the performance testing needs of hybrid electric systems in low-altitude, low-speed environments, traditional fixed test benches suffer from drawbacks such as high equipment investment, poor flexibility, and limited testing scenarios, making it difficult to meet the requirements of efficient and low-cost testing. Against this backdrop, mobile test benches, with their high flexibility and wide adaptability, have emerged as an efficient solution. They can be modified based on mature transportation platforms, and the movement of these platforms provides a low-speed flow environment for hybrid electric systems. This fully meets the testing requirements for low-altitude, low-speed conditions while effectively reducing the proportion of heavy asset investment in testing equipment, and has already seen initial applications in related fields.

[0004] However, the existing mobile test bench design still has the following problems:

[0005] First, most current products adopt a "transportation platform + independent test energy system" architecture. That is, the transportation platform only undertakes the functions of providing the incoming flow environment and carrying the hybrid power system. The energy system of the test platform itself and the energy system of the hybrid power system are set up independently and operate separately, without considering the inherent connection between the two.

[0006] Secondly, from the perspective of practical application scenarios and energy utilization, the test bench energy system and hybrid power system have a deep coupling relationship in multiple physical dimensions such as energy supply, load regulation, and waste energy recovery. The existing independent energy system design fails to make full use of this coupling characteristic, resulting in low energy utilization efficiency of the entire energy system. Furthermore, the separate configuration of the two independent systems also increases the overall cost and complexity of the equipment.

[0007] Therefore, it is necessary to propose a solution to improve one or more problems existing in the above-mentioned related technical solutions.

[0008] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0009] This application provides an energy system for a mobile test stand for an aviation hybrid electric power unit, the energy system comprising interconnected components:

[0010] The test bench energy subsystem includes a first power battery pack, which is connected in parallel with a bidirectional power supply. Converter and bidirectional Inverter bidirectional connection, bidirectional The converter and energy management controller are connected in one direction only, and in two directions only. The inverter is bidirectionally connected to the bidirectional permanent magnet synchronous motor.

[0011] The hybrid electric power energy subsystem includes a power generation unit, a first port of which is unidirectionally connected to a combiner unit, a second port of which is bidirectionally connected to an energy storage unit, a third port of which is unidirectionally connected to a power output unit, and a fourth port of which is bidirectionally connected to a power output unit. The converter is bidirectionally connected;

[0012] Among them, the energy management controller regulates the coordinated operation of the test bench's energy subsystem and the hybrid electric power energy subsystem.

[0013] Furthermore, the power generation unit includes a turbine generator set and a generator set connected in one direction in sequence. rectifier, The output of the rectifier is unidirectionally connected to the first port of the combiner unit; wherein, The rectifier converts the alternating current (AC) of the turbine generator set into direct current (DC).

[0014] Furthermore, the busbar is a busbar, the power transmission mode of the busbar is DC transmission, and the voltage range of the busbar is 400V~600V.

[0015] Furthermore, the energy storage unit includes Converter and second power battery pack, The converter is bidirectionally connected to the second port of the second power battery pack and the combiner unit, respectively.

[0016] Furthermore, the power output unit includes sequentially connected in one direction. Inverter, permanent magnet synchronous motor and propulsion unit; among which, The inverter's input terminal is unidirectionally connected to the third port of the combiner unit.

[0017] Furthermore, two-way The inverter and the first motor controller are integrated into one unit. The inverter and the second motor controller are integrated into one unit.

[0018] Furthermore, both the first and second power battery packs use lithium iron phosphate batteries, and both have an instantaneous discharge rate of [missing information]. The continuous discharge rate of both the first and second power battery packs is .

[0019] This application provides an energy system for a mobile test stand of an aviation hybrid electric power unit, which has at least the following beneficial effects:

[0020] (1) This application connects the test bench energy subsystem and the hybrid electric power energy subsystem through a busbar to achieve joint use, thereby significantly reducing the actual performance of the first power battery pack and drive motor in the mobile test bench and saving the manufacturing cost of the mobile test bench.

[0021] (2) This application utilizes the aerodynamic thrust generated by the hybrid electric power subsystem during the testing phase as the driving force of the vehicle, converting the gas kinetic energy that is difficult to utilize during the test into test assistance, thereby effectively saving the energy consumption and reserve requirements of the vehicle carrier during the test phase.

[0022] (3) By setting up an energy management controller, this application enables the first power battery pack and the second power battery pack to serve as backups for each other, thereby improving the reliability of the entire energy system during operation;

[0023] (4) This application utilizes the energy subsystem of the mobile test bench to recover braking energy, which can effectively improve energy utilization during the test process, thereby maximizing the energy efficiency of the entire energy system and minimizing the cost of use. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0025] Figure 1 This illustration shows a structural schematic diagram of an energy system applied to a mobile test stand for an aviation hybrid electric power unit, as shown in an exemplary embodiment of this application. Detailed Implementation

[0026] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0027] Furthermore, the accompanying drawings are merely illustrative of this application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0028] The energy system proposed in this application embodiment for a mobile test stand of an aviation hybrid electric power unit will be described in more detail below.

[0029] In existing aerospace propulsion technology, the energy systems of the mobile test stand and the test specimen are independent, resulting in a lack of interconnection between the two energy systems and low utilization. Therefore, this application proposes an energy system for a mobile test stand of an aerospace hybrid electric propulsion device, such as... Figure 1 As shown, the energy system may include interconnected components:

[0030] The test bench energy subsystem includes the first power battery pack and bidirectional... Converter, bidirectional Inverter, energy management controller, bidirectional permanent magnet synchronous motor.

[0031] Furthermore, the first power battery pack is connected in parallel with bidirectional... Converter and bidirectional The inverter is bidirectionally connected. The converter and energy management controller are connected in one direction only, and in two directions only. The inverter is bidirectionally connected to the bidirectional permanent magnet synchronous motor.

[0032] The hybrid electric power energy subsystem includes a power generation unit, a current combining unit, an energy storage unit, and a power output unit.

[0033] Furthermore, the power generation unit and the first port of the combiner unit are connected in one direction only.

[0034] Here, the power generation unit includes a turbine generator set connected in one direction in sequence and rectifier, The rectifier's output is unidirectionally connected to the first port of the combiner unit. The turbine generator set supplies AC power. The rectifier is responsible for converting the alternating current (AC) of the turbine generator set into direct current (DC).

[0035] The turbine generator set and the second power battery pack can jointly provide power or separately provide power to drive the permanent magnet synchronous motor. Simultaneously, the turbine generator set can also charge the second power battery pack while independently driving the permanent magnet synchronous motor.

[0036] Furthermore, in this embodiment, the bus unit is preferably configured as a bus bar. The fourth port of the bus bar is connected to the bidirectional... The converter is bidirectionally connected, thus enabling the connection between the test bench energy subsystem and the hybrid electric power energy subsystem, achieving interconnection between the two energy subsystems. The busbar's power output is DC transmission, and the preferred voltage range for the busbar is 400V~600V.

[0037] Furthermore, the energy storage unit includes Converter and second power battery pack, The converter is bidirectionally connected to the second port of the second power battery pack and the combiner unit, respectively.

[0038] Furthermore, the power output unit includes sequentially connected in one direction. Inverter, permanent magnet synchronous motor and propulsion unit; among which, The inverter's input terminal is unidirectionally connected to the third port of the combiner unit.

[0039] In this embodiment, bidirectional The inverter and the first motor controller are integrated into one unit. The inverter and the second motor controller are integrated into one unit.

[0040] In this embodiment, both the first and second power battery packs use lithium iron phosphate batteries, and the instantaneous discharge rates of both the first and second power battery packs are... The continuous discharge rate of both the first and second power battery packs is .

[0041] The specific implementation process of the energy system for a mobile test stand for an aviation hybrid electric power unit proposed in this application embodiment is as follows:

[0042] During the initial phase of the mobile test stand, the first power battery pack in the test stand's energy subsystem can be used to power the bidirectional permanent magnet synchronous motor, driving the mobile test stand to move. Alternatively, the turbine generator set and the second power battery pack in the hybrid electric power subsystem can be used together to power the permanent magnet synchronous motor. The permanent magnet synchronous motor drives the thruster to generate aerodynamic thrust, driving the mobile test stand to move. Furthermore, the test stand's energy subsystem and the hybrid electric power subsystem can work together to drive the mobile test stand to move.

[0043] During the driving phase on the mobile test bench, the hybrid electric power subsystem is used first to accelerate the vehicle or maintain a constant speed. If the driving force provided by the hybrid electric power subsystem is insufficient, it will be supplemented by the test bench energy subsystem.

[0044] During the braking and stopping phase on the mobile test stand, the test stand's energy subsystem is used first to decelerate and brake the vehicle. If the braking force is insufficient, the driving force provided by the hybrid electric power subsystem is rapidly reduced. During this phase, the bidirectional permanent magnet synchronous motor in the test stand's energy subsystem mainly operates in generator mode, prioritizing the replenishment of power to the second power battery pack. Once the second power battery pack is fully charged, it then replenishes power to the first power battery pack.

[0045] In practical use, the energy distribution of the entire energy system can be adjusted according to the state of charge (SOC) of the first and second power battery packs. If the SOC of the first power battery pack is too low, the energy from the second power battery pack will be used preferentially, and vice versa. If the SOC of both the first and second power battery packs is low, the state of the turbine generator set needs to be changed to quickly replenish the energy of both power battery packs.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0048] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the scope of the technology disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application.

[0049] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein.

Claims

1. An energy system applied to a mobile test stand for an aviation hybrid electric propulsion system, characterized in that, The energy system consists of interconnected components: The test bench energy subsystem includes a first power battery pack, which is connected in parallel with a bidirectional power supply. Converter and bidirectional The inverter is bidirectionally connected, the bidirectional The converter is unidirectionally connected to the energy management controller, the bidirectional connection... The inverter is bidirectionally connected to the bidirectional permanent magnet synchronous motor. A hybrid electric power energy subsystem includes a power generation unit, a first port of which is unidirectionally connected to a combiner unit, a second port of which is bidirectionally connected to an energy storage unit, a third port of which is unidirectionally connected to a power output unit, and a fourth port of which is bidirectionally connected to the energy storage unit. The converter is bidirectionally connected; The energy management controller regulates the coordinated operation of the test bench energy subsystem and the hybrid electric power energy subsystem.

2. The energy system applied to the mobile test stand of an aviation hybrid electric power unit according to claim 1, characterized in that, The power generation unit includes a turbine generator set and a series of turbine generator sets connected in one direction in sequence. The rectifier, The output of the rectifier is unidirectionally connected to the first port of the combiner unit; Among them, the The rectifier converts the alternating current (AC) of the turbine generator set into direct current (DC).

3. The energy system applied to the mobile test stand for aviation hybrid electric power units according to claim 1, characterized in that, The current collector is a bus bar, the power transmission mode of the current collector is DC transmission, and the voltage range of the current collector is 400V~600V.

4. The energy system applied to the mobile test stand for aviation hybrid electric power units according to claim 1, characterized in that, The energy storage unit includes The converter and the second power battery pack, the The converter is bidirectionally connected to the second power battery pack and the second port of the combiner unit, respectively.

5. The energy system applied to the mobile test stand for aviation hybrid electric power units according to claim 1, characterized in that, The power output unit includes sequentially connected unidirectionally... Inverter, permanent magnet synchronous motor and thruster; wherein, the... The input terminal of the inverter is unidirectionally connected to the third port of the combiner unit.

6. The energy system applied to the mobile test stand for aviation hybrid electric propulsion systems according to claim 1, characterized in that, The bidirectional The inverter's first motor controller is integrated into one unit. The inverter and the second motor controller are integrated into one unit.

7. The energy system applied to the mobile test stand of an aviation hybrid electric power unit according to claim 1, characterized in that, Both the first and second power battery packs use lithium iron phosphate batteries, and the instantaneous discharge rate of both the first and second power battery packs is [missing information]. The continuous discharge rate of both the first and second power battery packs is... .

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