The DC convertor equipment plays an important role in the aero static high voltage DC power supply system, which main development is miniaturization and modularization. Existing research methods of parallel operation are not based on model, which bring localization to design the control and repair tache. In allusion to this problem, modeling of aero static DC/DC convenors'parallel operation based on control transfer function presented. On the based of the single convertor model, the multi-convertor model constructed using linear system theory. After analysis the average current tache and convertor tache, the effect of parameters studied, which provided the basis for the control and error analysis of convertor parallel operation.%在高压直流供电体制下,航空静止直-直变换器起着十分重要的电压转换作用,小型化、模块化是其发展的主要方向.现有对直-直变换器并联运行研究的方法都是不基于模型的,为其控制和补偿环节的设计带来一定的局限性.针对此问题,提出了基于控制系统传递函数模型的多直-直变换器系统并联运行建模研究.在单台变换器模型的基础上,根据线性系统相关理论,建立了多直-直变换器并联系统的模型.通过对并联系统均流环节和变换器环节的详细分析,研究了模型各部分参数对系统并联特性的影响,为后续对变换器并联运行的控制及误差分析提供了模型基础.
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