Energy management method of more-electric aircraft hybrid power system based on MPC-PI control algorithm
A technology of hybrid power system and multi-electric aircraft, applied in the field of hybrid power prediction, can solve problems such as poor adjustment effect and inability to guarantee system stability, and achieve the effect of reducing fuel cell consumption
Active Publication Date: 2021-10-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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[0006] Purpose of the invention: In order to solve the problems that the traditional energy management method of hybrid power system cannot guarantee system stability and poor adjustment effect, the present invention provides an energy management method for multi-electric aircraft hybrid power system based on MPC-PI control algorithm
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[0095] The present invention will be further described below in conjunction with the accompanying drawings.
[0096] The energy management method of the multi-electric aircraft hybrid power system based on the MPC-PI control algorithm provided by the present invention is based on such as figure 2 It is carried out on the structure of the multi-electric aircraft hybrid power system shown, and its control structure and method are as follows figure 1 shown. The system includes a synchronous generator, a transformer rectifier, a load, a supercapacitor, a storage battery, a fuel cell and a corresponding power electronic converter; wherein the synchronous generator is connected to a DC bus through a transformer rectifier; the supercapacitor is connected to two DC buses The storage battery and the dye battery are respectively connected to both ends of the DC bus through a DC / DC converter, and the load is connected to both ends of the DC bus through a DC / AC converter.
[0097] When...
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The invention discloses an energy management method of a multi-electric aircraft hybrid power system based on an MPC-PI control algorithm, which comprises the following steps: firstly, respectively modeling a DC bus, an energy storage device and a fuel cell, and then sorting and converting each model into a prediction model; and designing an MPC-PI controller, then adding a feedback correction link to complete the design of the MPC-PI controller, and finally controlling a converter in the hybrid power system according to the designed MPC-PI controller to realize the purposes of ensuring the stability of a direct-current bus and saving the energy of the hybrid power system. By applying a load changing along with time to the hybrid power system, the proposed MPC-PI strategy is compared with a traditional PI method, the feasibility and effectiveness of the method are further proved, and the stability of the direct-current bus voltage can be guaranteed while the energy utilization efficiency of the hybrid power system can be effectively improved.
Description
technical field [0001] The invention relates to the technical field of hybrid power prediction, and mainly relates to an energy management method of a hybrid power system of a multi-electric aircraft based on an MPC-PI control algorithm. Background technique [0002] With the intensification of the energy crisis, the public's increasing attention to environmental protection issues and the aviation industry's demand for reducing flight costs, electrified aircraft have emerged as the times require. At the beginning of the 21st century, multi-electric aircraft such as B787, F35, and A380 appeared, gradually unifying the secondary energy in the form of mechanical energy, hydraulic energy, and pneumatic energy in traditional aircraft into electrical energy. Current state-of-the-art gas turbine engines utilize only about 40% of the fuel's energy. For electric propulsion aircraft, the conversion rate from electrical energy to propulsion power can exceed 70%. In multi-electric air...
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IPC IPC(8): H02J1/10H02J1/14H02J7/34G06F30/20B64D27/02G06F111/04G06F113/04
CPCH02J1/10H02J1/106H02J1/109H02J1/14H02J7/34H02J7/345G06F30/20B64D27/02G06F2111/04G06F2113/04B64D2221/00H02J2300/30H02J2203/20H02J2203/10B64D27/026
Inventor 刘佩松肖玲斐陈勇兴
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS