Low-Torque-Ripple Sensorless Control of Mutually Coupled Switched Reluctance Machines (MCSRMs)

该研究将通过为互耦开关磁阻电机设计一种新的控制方案来推进电机驱动技术。这些机器对于满足电气化运输、工业应用和家用电器中对具有成本效益、高度可靠和高效的电机驱动系统的日益增长的需求至关重要。虽然感应和永磁同步电机目前主导着市场，但由于价格飙升和稀土材料的快速耗尽，美国和世界各地的研究人员都在寻找无稀土的替代品。开关磁阻电机属于这类替代方案。由于其结构简单、刚性好、容错能力强、速度恒定功率范围大等优点，越来越受到人们的欢迎。然而，传统的开关磁阻电机遭受高转矩脉动、噪声、振动和非标准非对称桥式功率转换器。相互耦合的开关磁阻电机是拟议的研究的重点是优于传统的开关磁阻电机，因为它们可以由一个标准的六开关转换器驱动。拟议的研究将解决这些技术挑战阻碍相互耦合开关磁阻电机的广泛利用。这项工作将大大推进电力电子和电机驱动技术的研究，并将促进研究，教学，培训和学习。这项研究将被整合到本科生和研究生的电力工程课程，以教育未来的工程师谁将有技能和知识，以满足新兴的需求，该行业的拟议研究的目标是开发一种新的控制方案，相互耦合的开关磁阻电机使用一个标准的六开关转换器，以最大限度地减少转矩脉动，使位置传感器控制。将追求三个具体目标：（1）通过使用两级电流分布方案来减少转矩脉动。(2)实现无位置传感器控制。(3)使用六开关标准转换器来开发低转矩涟漪无传感器控制。实现所提出的研究目标将通过克服关键障碍高转矩脉动和非无传感器控制，将相互耦合的开关磁阻电机发展成为下一代无稀土电机。到目前为止，相互耦合的开关磁阻电机的建模起源于传统的开关磁阻电机，但是，由于独特的转矩产生机制，这种建模方法将复杂的控制系统的发展。本研究亦将探讨互耦式开关磁阻电机之非线性模型，并将非线性模型整合于两阶段转矩涟漪抑制方案及无位置感测器控制之设计中，以弥补互耦式开关磁阻电机领域建模与控制间之差距。此外，六开关标准转换器将用于取代非对称桥式转换器，以提高成本效益，并改善其在电气化运输，工业应用和家用电器中的适用性。

The proposed research will advance motor drive technologies by designing a novel control scheme for mutually coupled switched reluctance machines. Such machines are of great importance to satisfy the increasing demand for cost-effective, highly reliable and efficient motor drive systems in electrified transportation, industrial applications, and home appliances. Although induction and permanent magnet synchronous machines are currently dominating the market, due to the soaring prices and rapid depletion of rare-earth materials, researchers in the U.S. and world-wide are searching for rare-earth-free alternatives. Switched reluctance machines belong to the group of such alternatives. They are increasing in popularity due to their simple and rigid structure, fault-tolerant capability, and extended-speed constant-power range. However, conventional switched reluctance machines suffer from high torque ripples, acoustic noise, vibration, and non-standard asymmetric bridge power converters. Mutually coupled switched reluctance machines that are the focus of the proposed research are outperforming conventional switched reluctance machines as they can be driven by a standard six-switch converter. The proposed research will address these technical challenges impeding the widespread utilization of mutually coupled switched reluctance machines. The work will greatly advance the research in power electronics and motor drive technology and will promote research, teaching, training, and learning. The research will be integrated into the undergraduate and graduate electric power engineering curriculum to educate future engineers who will have the skills and knowledge to meet the emerging needs of the industry.The goal of the proposed research is to develop a novel control scheme for mutually coupled switched reluctance machines using a standard six-switch converter to minimize torque ripples and enable position sensorless control. Three specific objectives will be pursued: (1) Reduce torque ripples through the use of a two-stage current profiling scheme. (2) Attain position sensorless control. (3) Use a six-switch standard converter to develop a low-torque-ripple sensorless control. Accomplishing the objectives of the proposed research will develop mutually coupled switched reluctance machines into the next generation of rare-earth-free electric machines by overcoming key obstacles high torque ripples and non-sensorless control. To date, the modeling of mutually coupled switched reluctance machines has originated from conventional switched reluctance machines; however, due to the unique torque production mechanism, this modeling approach will complicate control system developments. This work will also investigate nonlinear models of mutually coupled switched reluctance machines and integrate nonlinear models into the design of the two-stage torque ripple reduction scheme and position sensorless control, thereby bridging the gap between the modeling and control in the field of mutually coupled switched reluctance machines. In addition, a six-switch standard converter will be used to replace the asymmetric bridge converter to increase cost effectiveness and improve its suitability in electrified transportation, industrial applications, and home appliances.