Innovative Power Electronics and Modulation Technologies for Electric, More Electric, and Hybrid Electric Transportation

该提案的重点是开发一项关于交通电气化的研究计划。主要的推动力包括使更多电动飞机(MEA)和海洋电气化的技术成为可能。二次推力是地面车辆和车辆与电网的接口。这项研究计划将开发试验台、控制平台、软硬件接口，并创建电动、混合动力和更多电动交通工具的模拟和测试设施。该提案的重点是设计和开发创新的电力电子拓扑结构和用于电力运输的新型调制技术。采用宽带隙半导体材料，如碳化硅(SiC)、氮化镓(GaN)和基于DirectFET的器件和高通量磁性材料(纳米晶)，以及减少电解、散热和滤光片体积，是新设计和开发的主要补充。该提案旨在研究电解电容器减少的电力电子电路。 在MEA中，轻量化、高密度、低谐波和EMC要求、容错性和可靠性是主要属性。为工业应用开发的现有传统电力电子设备不能满足飞机应用的优化，以满足机载电气系统环境标准的谐波要求。因此，新型电力电子技术成为支撑MEA变频电源系统的关键技术。研究具有开关顺序和矩阵变换的新型功率因数校正拓扑。 电力船舶综合电力系统正寻求采用中压直流结构。该研究项目旨在开发适用于船舶推进系统的中压模数多电平变流器和最佳低频调制(50-200 Hz)技术，以在不影响THD的情况下降低开关损耗。它提高了设备的功率处理能力，并降低了散热和冷却要求。无变压器体系结构和矩阵转换器，以降低复杂性，成本，并提高密度将被研究。 对于地面车辆，拟议的研究计划将制定战略，在非常高的开关频率(高达500 kHz)下实施软开关调制技术，以限制磁件和滤波器的成本。为实现低成本、高效率和轻量化的推进系统，将设计和开发专用的电解无电容容错电力电子学拓扑结构和新型器件(SiC、GaN、DirectFET)。 具有通信和控制层的双向V2G能力将被开发用于电动汽车参与未来的智能电网或电力系统配电网，以减少高峰需求，以利用移动分布式储能(EV电池)在停车和静止。

The proposal focuses on developing a research program on transportation electrification. Major thrusts include enabling technologies for more electric aircraft (MEA) and marine electrification. Secondary thrusts are ground vehicles and vehicle-to-grid interface. This research program will develop test-benches, control platforms, software-hardware interfaces and create simulation and testing facilities for electric, hybrid and more electric transportation. The proposal focuses on design and development of innovative power electronics topologies and novel modulation techniques for electric transportation. Adoption of wide bandgap semiconductor materials like Silicon Carbide (SiC) and Gallium Nitride (GaN) and DirectFET based devices and high flux magnetic materials (nanocrystalline) and reduction in electrolytic, thermal, and filters volume are the major additions to the new design and development. The proposal is looking to investigate on power electronics circuits with reduced electrolytic capacitors. In MEA, light weight, high-density, low harmonics and EMC requirements, fault tolerance, and reliability are the major attributes. Existing conventional power electronics developed for industrial applications are not optimized for aircraft applications to meet harmonic requirements in airborne electrical system environmental standards. Therefore, the new power electronics become an essential technology supporting variable frequency electrical power system of MEA. Novel power factor correction topology with switching sequence and matrix converters will be researched. Integrated power system of electric ship is looking to adopt medium voltage (MV) DC architecture. This research program aims at developing MV modular multilevel converters and optimal low frequency modulation (50-200 Hz) techniques for marine propulsion system to reduce switching loses while not compromising on THD. It improves power handling capacity of devices and reduces thermal and cooling requirements. Transformerless architecture and matrix converter to reduce the complexity, cost, and improve density will be investigated. For ground vehicles, proposed research program will strategize to implement soft-switching modulation techniques at very high switching frequency, up to 500 kHz, to limit the cost of magnetics, and filters. Dedicated electrolytic capacitorless fault tolerant power electronics topologies with reduced magnetics and new devices (Sic, GaN, DirectFET)will be designed and developed to realize low cost, highly efficient and light weight propulsion system. Bidirectional V2G capability with communication and control layer will be developed for EVs to participate in future smart grid or power system distribution network to shave the peak demand to avail the mobile distributed energy storage (EV batteries) while parked and stationary.