With the large number of applications for multi electric aircraft (MEA), the power capacity of the aviation static inverter (ASI) has been continuously improved. Therefore, more and more modular parallel-based topologies are being used in the ASI to achieve power expansion. Combined with carrier phase-shift modulation, the harmonic components of a system can be further reduced. However, due to the parameter asymmetry between paralleled modules and power system disturbances, additional low frequency and DC bias components are superimposed on the control signal. This paper uses exponential function analysis to analyze the harmonic distribution of a modular ASI based on carrier phase-shift modulation under non-ideal conditions. In addition, the distribution characteristics of different paralleled topologies are compared. Finally, the correctness of the theoretical analysis is verified by simulation and experimental results.

中文翻译：

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非对称条件下交错并联静态逆变器谐波特性分析

随着多电飞机（MEA）的大量应用，航空静态逆变器（ASI）的功率容量不断提高。因此，越来越多的基于模块化并行的拓扑被用于 ASI 以实现功率扩展。结合载波相移调制，可以进一步降低系统的谐波分量。然而，由于并联模块之间的参数不对称和电力系统干扰，额外的低频和直流偏置分量叠加在控制信号上。本文采用指数函数分析法分析了基于载波相移调制的模块化ASI在非理想条件下的谐波分布。此外，还比较了不同并联拓扑的分布特性。最后，