MEMS Based Rotor Flux Sensing for Improved Operation of Electric Motors

基于MEMS的转子磁通传感改进电机运行(建议编号：(ECS-0601301)PI：Roy McCan不断增加的能源成本和对温室气体排放导致的气候变化的担忧导致对商业、住宅和工业应用的电机提高效率和减轻重量的需求日益增加。为了满足这些要求，电机控制技术被开发出来，这些技术依赖于对磁通量的估计来优化机器性能。然而，这些先进的方法使用外部测量电流、电压和转子位置来控制电机和发电机。这项研究将开发一种通过在转子和定子元件中嵌入磁场微型机电传感器(MEMS)来设计和运行电机和发电机的全新方法。智能优点：嵌入式MEMS设备将提供对高级电机控制算法使用的磁通水平的直接测量，以优化电机和发电机的运行。本研究包括开发一种适用于旋转电机内部运行的无线射频通信的MEMS装置。传感器的功率将从电机内部的环境磁场变化中获得。这项研究将集中在机器结构和传感器放置上，以便在机器运行期间提供足够的精度来估计麦克斯韦应力张量。除了运行过程中的改进之外，MEMS磁通传感器将足够小，通过提供以前传统磁性仪器无法提供的详细运行数据来帮助电机的设计和验证。为了验证理论工作，将开发一台25kW的样机。更广泛的影响：这种马达将被纳入ASME国际太阳能飞溅大学竞赛的阿肯色大学太阳能船参赛项目。这为本科生提供了先进能源转换技术的实践经验。这也以有形的方式向学生展示了电能转换技术的持续创新。

MEMS Based Rotor Flux Sensing for Improved Operation of Electric Motors(Proposal No. ECS-0601301)PI: Roy McCannIncreased energy costs and concerns about climate change due to greenhouse gas emissions has led to increasing demands for improved efficiency and reduced weight in electrical machines for commercial, residential and industrial applications. To meet these requirements, motor control techniques have been developed that rely upon estimates of magnetic flux to optimize machine performance. However, these advanced methods use external measurements of current, voltage and rotor position to control electric motors and generators. This research will develop a fundamentally new method of designing and operating electric motors and generators by embedding magnetic field micro-electromechanical sensors (MEMS) in the rotor and stator elements.Intellectual Merit: The embedded MEMS devices will provide a direct measurement of flux levels used by advanced motor control algorithms for optimized motor and generator operation. This research includes the development of a MEMS device with wireless radio frequency communication suitable for operating inside rotating electrical machinery. Power for the sensors will be obtained from the ambient field variations present inside the electric machine. The research will focus on machine structures and sensor placement that provides sufficient accuracy in estimating the Maxwell stress tensor during machine operation. Beyond improvements during operation, the MEMS flux sensors will be sufficiently small to aid in the design and validation of electrical machinery by providing operational data at a level of detail not previously available with conventional magnetic instrumentation. A 25 kW prototype motor will be developed to confirm the theoretical work. Broader Impacts: This motor will be incorporated into the University of Arkansas solar boat entry of the ASME International Solar Splash collegiate competition. This provides undergraduate students with hands-on experience in advanced energy conversion technologies. This also demonstrates in a tangible manner to students the continuing innovation in electrical energy conversion technology.