A Compound Control Strategy for an Ultralight Power Generation System

Pingping Wen, Zhibao Yuan, Zengquan Yuan and Haiping Xu ()
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Pingping Wen: Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
Zhibao Yuan: Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
Zengquan Yuan: Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
Haiping Xu: Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China

Energies, 2024, vol. 17, issue 6, 1-19

Abstract: Ultralight power generation equipment has high requirements for the power density, continuous operation, and transient stability of the whole machine, and there is a direct conflict between high power density and substantial stability control in the power unit design. In order to meet the power density requirements of ultralight power stations, three main problems need to be solved, namely engine speed oscillation and flameout in the process of load power mutation, matching of the generator and engine torque, and stabilizing the voltage waveform of the AC output end. In this paper, we proposed an exquisite compound control strategy for ultralight power generation systems in engines, generators, and inverters. The effectiveness and practicability of the proposed strategy are verified by both simulation and experiment. The results show that the proposed control strategy can effectively solve the instability problem of the ultralight generator set and improve the stability of the system, where response recovery can be achieved within 0.9 s under the conditions of a total load increase or decrease, and the mismatching degree of the generator following the engine is reduced by 90%. The strategy could also guarantee long-term stable operation with high-quality electrical energy output.

Keywords: ultralight power generation system; load power mutation; exquisite control strategy; mismatching degree; high-quality electrical energy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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