Collaborative Research: High-Efficiency Gearless Power Conversion Systems with Silent Permanent-Magnet Machines

本研究的目的是设计、建造和研究新型高效无齿轮机电功率转换系统，该系统使用电力电子转换器和无声永磁、交流电机和高磁极数的电机。将重点介绍两个这样的系统，即一个高度自动化的轮椅系统和一个小型风力涡轮机系统。将研究四种创新的机械设计。努力减少噪声和电磁噪声的排放。智力价值：该项目的智力价值将在于为所研究的机器和电力转换系统开发新的结构、控制策略和电磁模型。它将允许对机械、电气、磁性和电子部件的复杂组件中的电磁场和动态现象进行有洞察力的分析。其直接结果将是轮椅的新型无齿轮驱动和住宅可再生能源的新型无齿轮风力涡轮机系统。该系统将具有高效率、低速和高扭矩、最小的扭矩脉动、低成本和低维护要求、高可靠性、运行安静和用户友好。更广泛的影响：增强新型电机的建模、设计和控制知识，以及丰富新车辆驱动和可再生能源系统的技术基础，是该项目的更广泛影响。该项目将产生至少两篇博士学位论文。将努力从任职人数不足的群体中招聘研究助理。研究成果将通过出版物和演示文稿传播，所开发的实验装置将用于大学生和高中生的练习和演示。

The objective of this research is to design, build, and investigate novel high-efficiency gearless electromechanical power conversion systems employing power electronic converters and silent permanent-magnet, alternating-current, electric machines with a high number of magnetic poles. Two such systems, that is, a highly automated wheelchair and a small wind turbine system will be focused on. Four innovative machine designs will be studied. Abatement of the emitted acoustic and electromagnetic noise will be endeavored. Intellectual Merit:The intellectual merit of the project will consist in development of new structures, control strategies, and electromagnetic models of the investigated machines and power conversion systems. It will allow an insightful analysis of the electromagnetic fields and dynamic phenomena in complex assemblies of mechanical, electrical, magnetic, and electronic components. The direct outcome will be a novel gearless drive for wheelchairs and a novel gearless wind-turbine system for residential renewable-energy sources. The systems will have high efficiency, low speed and high torque, minimal torque ripple, low cost and maintenance requirements, high reliability, quiet operation, and user-friendliness. Broader Impacts:Enhancement of the knowledge of modeling, design, and control of novel types of electric machines, and enrichment of the technological base for new vehicular drives and renewable-energy systems, are the broader impacts of the project. The project will generate at least two PhD dissertations. Efforts will be made to recruit research assistants from underrepresented groups. Research results will be disseminated through publications and presentations, and the experimental setups developed will be utilized in exercises and demonstrations for university and high-school students.