Modular Modeling and Distributed Control of Permanent-Magnet Modular Motor Drives (MMDs) for Electric Aircraft Propulsion
Modular Modeling and Distributed Control of Permanent-Magnet Modular Motor Drives (MMDs) for Electric Aircraft Propulsion
复制标题
用于电动飞机推进的永磁模块化电机驱动器 (MMD) 的模块化建模和分布式控制
DOI：
10.1109/ecce47101.2021.9594943
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
B. Sarlioglu
中科院分区：
文献类型：
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作者：
Hao Zeng;James A. Swanke;T. Jahns;B. Sarlioglu
永磁模块化电机驱动系统(MMDS)具有高功率密度、高效率和高容错性等优点，被认为是电气化飞机中最有潜力的机械驱动推进单元。通过消除控制器中的单点故障(SPOFs)，采用异构型、分布式和模块化控制方案可以提高系统的可靠性。为了方便模块化机床控制的设计与分析，提出了一种通用的模块化机床分析与建模框架。模块级电机分析揭示了模块内不平衡电感和模块间不平衡交叉耦合磁通，这与传统电机不同，是由于模块之间不对称的相互槽泄漏磁通耦合。利用复矢量和共轭复矢量建立了不对称的模块级机床模型。由于模块的不对称性，当模块负载不均匀时，平衡的三相模块电压励磁会同时产生正序和负序模块电流响应。此功能恶化了MMD的模块间独立性，尤其是在需要最大模块间独立性的故障条件下。提出了一种带有负序调节器的模块化控制，以消除不均匀负载和故障条件下不需要的负序分量，以实现所需的高度模块间独立性。
Permanent magnet (PM) modular motor drives (MMDs) have been recognized as promising candidate machine drive propulsion units in electrified aircraft due to their high power density, high efficiency, and high fault tolerance. Heterarchical, distributed, and modular control schemes are preferred to enhance the system reliability by eliminating single points of failure (SPOFs) from controllers. To facilitate modular machine control design and analysis, a generalized module-level machine analysis and modeling framework has been developed. Module-level machine analysis reveals intra-module unbalanced inductances and inter-module unbalanced cross-coupled fluxes that differ from conventional machines due to asymmetric mutual slot leakage flux couplings among the modules. An asymmetric module-level machine model has been developed by using complex vectors and conjugate complex vectors. Due to the asymmetry, balanced three-phase module voltage excitation induces both positive and negative sequence module current responses when the modules are not evenly loaded. This feature deteriorates the inter-module independence of MMDs, especially under fault conditions where maximum inter-module independence is desired. A modular control with a negative sequence regulator is proposed to eliminate the undesired negative sequence component under uneven loading and fault conditions in order to achieve the desired high level of inter-module independence.