多相整流异步发电机容错运行的研究

The system of a solid cage-rotor induction generator directly connected to a high-speed prime mover is of much less volume, higher transmission efficiency and lower drive noise. The stator multiphase power winding linking a rectifier load increases DC power supply quality and the auxiliary field winding improves the reactive power adjustment capability, which makes the generator with so many good performance indexes be determinately utilized in a naval vessel. In view of high reliability for the military engineering equipment, the project is intended to study performances of the multiphase rectifier induction generator under fault statuses, thus providing theoretic foundation for feasibility of fault-tolerant operation. Considering the character that the electric machine rotor associates with the stator only by magnetic field not by electric circuit, a disposal method is applied to split the fault multiphase rectifier induction generator system, which is characteristic by asymmetric, nonlinear, multivariable, varying-topology structure, into the stator subsystem and the rotor subsystem. Based on circuit topology theory, the loop current approach is used to analyze two subsystems, respectively. The research means aims at solving primary problems, firstly, and then minor problems, secondly. The investigation subjects of the project cover stator winding fault analysis, rotor bar fault analysis and element/device fault analysis of the multiphase rectifier induction generator system. The goal of this research work is to advance reliability of military equipment, which is of significant importance for national defense modernization.

高速直连式鼠笼实心转子异步发电机可大幅减小系统体积，增加传输效率并降低传动噪声，定子功率绕组采用多相整流方式提高了直流供电品质，定子另置一套辅助励磁绕组改善了无功调节性能，诸多高性能指标确立了该发电机的军事应用前景。鉴于军工装置的高可靠性要求，本项目旨在研究多相整流异步发电机故障情况下的性能，为该电机容错运行的可行性提供理论依据。从电机定转子间只有磁路耦合而无电路关联的特征出发，针对故障情况下多相整流异步发电机系统非对称、非线性、多变量、变拓扑之特点，对整个系统采取了拆分为定子子系统与转子子系统的处理方法，并用基于电路拓扑理论的回路电流法对两个子系统分别进行分析。研究工作围绕先抓主要矛盾再考虑次要矛盾的总体思路，研究内容涉及多相整流异步发电机定子绕组故障时的运行分析、转子导条故障时的运行分析、系统中元器件故障时的运行分析等方面。此项研究以提升军事装备可靠性为目标，对国防现代化建设意义重大。

本项目研究多相整流发电机故障情况下的性能，为该电机容错运行的可行性提供理论依据。根据电机定转子间只有磁路耦合而无电路关联的特征，针对故障情况下多相整流发电机系统非对称、非线性、多变量、变拓扑之特点，对整个系统采取了拆分为定子子系统与转子子系统的处理方法，并用基于电路拓扑理论的回路电流法对定子子系统进行分析。研究工作围绕先抓主要矛盾再考虑次要矛盾的总体思路，研究内容涉及定子绕组组合模式对磁动势与参数的影响、多相电机定子参数计算、多相整流发电机定子绕组缺桥故障运行分析、多相整流系统中元器件故障运行分析、多因素作用下铁磁材料特性分析等方面。本项目通过对多相整流发电机复杂电路系统进行有效拆分，完成了系统网络简化措施的实现步骤，实现了电路拓扑理论在多相整流发电机系统故障状态下的性能分析及参数计算，体现了所用分析工具相比于其它现有分析工具的优越性。通过本项目的研究工作，解决了多相整流发电机系统结构复杂、运行模式多变、尤其是故障情况下对称性缺失时的分析难题。研究成果提升了军事装备的可靠性，对国防现代化建设意义重大。.通过本项目的研究，完善了电路拓扑分析方法的理论体系，掌握了该方法分析复杂电机系统的应用过程。研究成果包括在国内外权威学术期刊及国际会议上发表论文21篇，其中被SCI收录5篇、EI收录16篇；获得国家发明专利授权3项；获国家科技进步一等奖与二等奖各1项，获军队科技进步一等奖与二等奖各1项。在人才方面培养博士生1名、硕士生4名，获省优秀博士论文1篇、省优秀硕士论文1篇、省研究生优秀科技创新成果奖1项。