新一代大飞机变频电力系统的结构、优化和挑战

摘要

On-board power systems of large aircraft are quickly moving from constant frequency （CF） AC to variable frequency （VF） AC systems or a hybrid system configuration. Replacing CF AC systems by VF AC systems will reduce system weight, volume, costs; and improve overall system efficiency. A future VF-power system architecture is presented. Architecture optimization is based on the cost index minimization of the total kVA throughput times the number of stages of conversions. New requirements and challenges for the design of new equipments and subsystems are also discussed.%新一代大飞机的主电力系统开始从传统的恒频交流系统快速走向变频（包括混合型）交流系统。此结构性的变革将减轻机载系统的总体重量和体积,并有效地提高整体系统的效率。本文提出了一个新的机载变频电力系统的结构,实例讨论使得各级电力变换的总损耗最小化的一种系统优化设计和电力电子系统必须承担的重要功能。并进一步综述了电力电子装置和系统设计所面临的主要挑战。