矿用隔离开关用半碟轴向磁场永磁电机机构及分断检验技术研究

Aiming at the problems of poor reliability and low controllability of the disengagement test mechanism of mine switch-disconnectors, mechanism and disconnection inspection technology of half-disk axial magnetic field permanent magnet motor are put forward, and the development of mine electrical equipment inspection technology is promoted. Firstly, the structure, transmission mode and moment of inertia of the mine switch-disconnectors are analyzed, and the technical parameters of the motor mechanism are determined according to the coupling relationship between the breaking speed and the arc characteristic field. Secondly, the magnetic field distribution of the half-disk axial magnetic field permanent magnet motor is analyzed, and the structure design of the semi-disc axial magnetic field permanent magnet motor is completed through the magnetic field flux path. Based on the finite element analysis software, the three-dimensional simulation model is established to analyze the output characteristics and improve the topology. Thirdly, the transient simulation model of the semi- disk axial magnetic field permanent magnet motor mechanism control system is established by combining the maximum torque control strategy, realizing the non-perturbation convergence among the starting - speeding - braking and limiting process. Finally, the hardware circuit and software program of half-disk axial magnetic field permanent magnet motor mechanism control system are designed, and the multi-variable data centralized fusion system is established. The mine isolation switch breaking test platform is set up, and the breaking test is completed, and the technical rationality and safety of the project is verified.

针对矿用隔离开关分断试验操动机构可靠性差、可控性低的问题，提出矿用隔离开关用半碟轴向磁场永磁电机机构及分断检验技术，推动矿用电气设备检验技术的发展。首先，分析矿用隔离开关组成结构、传动方式和转动惯量，根据分断速度与电弧特性之间的耦合关系，确定电机机构的技术参数。其次，分析半碟轴向磁场永磁电机磁场分布，从磁场磁通路径入手进行半碟轴向磁场永磁电机结构设计，基于有限元分析软件建立三维仿真模型，分析机构输出特性，并进行拓扑结构改进。然后，结合最大转矩控制策略建立半碟轴向磁场永磁电机机构控制系统暂态仿真模型，实现起动-调速-制动和限位之间的无扰动衔接。最后，设计半碟轴向磁场永磁电机机构控制系统硬件电路和软件程序，建立多变量数据集中式融合系统，搭建矿用隔离开关分断检验平台，完成分断试验检验，验证项目技术合理性和安全性。

煤炭占我国化石能源资源的90%以上，是稳定、经济、自主保障程度最高的能源。分断检验是煤矿隔离换向开关型式试验中重要检验项目，用于考核其在带载情况下开断电流的能力。鉴于现有操动机构的弊端和分断检验需求，提出煤矿隔离换向开关分断检验电机机构技术，分析了煤矿隔离换向开关结构和驱动需求，探索了分断速度和燃弧时间之间关系，基于有限元分析软件建立了电磁仿真模型，对输出特性进行了仿真分析，设计了分断检验用负载阻抗和电源柜，研制了电机机构及分断检验控制系统，提出了瞬态过程功率因数测试方法，完成了煤矿隔离换向开关分断检验，缩短了煤矿隔离换向开关分断检验周期，提高了煤矿隔离换向开关分断检验效率，保证了煤矿隔离换向开关相关产品安全，促进了煤炭行业持续健康发展。

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