Energy management method suitable for hybrid power supply system of multi-electric aircraft

By designing a distributed energy management method suitable for hybrid power supply systems of multi-electric aircraft, the problems of load power distribution, control parameter design, energy storage state adjustment and renewable energy feedback are solved, and the stable operation and efficient energy management of the system are achieved.

CN119994835AActive Publication Date: 2025-05-13HARBIN INST OF TECH
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Patent Information

Application Number
CN202510075972.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-17
Publication Date
2025-05-13
Estimated Expiration
2045-01-17

AI Technical Summary

Technical Problem

The existing distributed energy management strategy is difficult to effectively deal with the optimization distribution of load power among power supply power of three different characteristics, the design of control parameters, the state of charge adjustment of energy storage devices, and the feedback of load renewable energy.

Method used

An energy management method suitable for hybrid power supply system of multi-electric aircraft is proposed. By building a hybrid power supply system of multi-electric aircraft, a distributed control strategy is designed, including the virtual sag control method and the use of bandpass filters, to achieve autonomous distribution of load current and stable operation of the system.

Benefits of technology

It realizes the independent optimization distribution of strong pulsating load power in a wide-band domain, maintains the bus voltage, efficiently recovers renewable energy, adjusts the charge state of the energy storage device, and maintains the stable operation of the system when the power supply power fails. It has the performance advantages of high energy utilization, high durability, high flexibility and high robustness.

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Abstract

The invention provides an energy management method suitable for a hybrid power supply system of a multi-electric aircraft, and belongs to the technical field of multi-energy-storage direct-current micro-grids. The problem that an existing distributed energy management strategy cannot effectively process optimal distribution of load power among three power supplies with different characteristics, the design problem of control parameters, the charge state adjustment problem of an energy storage device and the feedback problem of load renewable energy are solved. The method comprises the steps that 1, a multi-electric aircraft hybrid power supply system is built; 2, according to the output characteristics of the power supplies, the distribution relation of load currents among the power supplies is set, and a distributed control strategy corresponding to each power supply branch is designed; and step 3, based on a power supply parameter design criterion, designing a virtual impedance parameter and an inner loop control parameter in combination with the distribution relation of the load current among the power supplies, and ensuring stable operation of the hybrid power supply system of the more-electric aircraft.
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