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高压直流供电系统是未来多电飞机供电系统的重要方案之一,但其中大量电力电子装置的应用使得负载体现很强的负阻抗效应,严重影响了系统的稳定性。此外,直接互联的集成方法也经常导致其稳定性问题面临挑战,传统的李雅普诺夫稳定判据难以分析复杂直流系统。本文总结了5种小信号阻抗分析和4种大信号分析方法,使得针对复杂直流系统的稳定性分析更简便和有效。相对于无源阻尼法,有源阻尼的稳定性补偿方法不增加元器件,得到了国内外学者的广泛研究。根据补偿信号的构成形式,将有源阻尼法分为线性补偿和非线性补偿两类,并详细综述了两类方法中补偿信号的构成和补偿信号注入的位置,进一步比较了两类方法的优缺点。
The HVDC power supply system is one of the most important schemes for the future multi-aircraft aircraft power supply system. However, the application of a large number of power electronic devices makes the load have a strong negative impedance effect and seriously affect the stability of the system. In addition, the integrated method of direct interconnection often leads to the challenge of its stability problem. The traditional Lyapunov stability criterion is difficult to analyze the complex DC system. This paper summarizes five kinds of small signal impedance analysis and four kinds of large signal analysis methods, making the stability analysis of complex DC systems easier and more effective. Compared with the passive damping method, the stability compensation method of active damping does not increase the components and has been widely studied by scholars at home and abroad. According to the form of the compensation signal, the active damping method is divided into two categories: linear compensation and non-linear compensation. The composition of the compensation signal and the location of the compensation signal are summarized in detail. The advantages of the two methods are further compared Disadvantages.