Power Conversion, Pulse With Modulation, and Integration Techniques for All Electric Vehicles

该提案的重点是为海上电气化和更多电动飞机(MEA)设计和开发创新的电力电子拓扑和新型调制技术。海上电气化(海上运输)和MEA(空中运输)是两种重型电力运输系统，与地面运输不同类别。地面电动汽车的电力电子技术和驱动技术已经有了很大的研究，目前处于饱和状态。然而，针对船用和MEA的电力电子技术研究还不成熟。对于这两种应用，电力电子面临着不同的挑战。由于这些船舶和MEA的不同和特定的要求，几个行业正在研究这些船舶和MEA的电力电子设备。加拿大的大学缺乏关于海洋和MEA的研究项目。因此，这项研究计划的目的是建立一个用于船用和中东和非洲地区的电力电子研究计划。*电力电子是使传统交通系统电气化的关键使能技术。控制电力电子学中半导体器件开关状态的调制方案对于满足特定要求和实现所需的体积、重量、效率等属性具有重要意义。*为了实现更高功率的船舶系统的高效率，提出了中压(MV)解决方案，并正在工业中采用它。然而，现有的器件对其阻断电压有限制。因此，适合中压大功率应用的模块化多电平变流器应运而生。为了将器件的开关损耗限制在mV，最好在低开关频率下对器件进行调制。然而，它对逆变器输出电流的总谐波失真(THD)造成了影响。因此，本研究的目标是开发中压直流(MVDC)MMCs和用于MVDC船用推进系统的最佳低频调制，以在不影响THD的情况下减少开关损耗。*电力电子解决方案，如基于矩阵转换器的无直流环节的直接交-交变换和有直流环节的有源-前端整流，将用于消除笨重的移相变压器。*对于MEA，将以最小的THD研究开发360-800 Hz可变频率的AC/DC转换器的电力电子解决方案。*拟议的研究计划将制定战略，实现高开关频率调制，以限制磁件和滤波器的成本和体积。宽禁带器件、碳化硅和氮化镓以及磁性材料、纳米晶体将被研究以开发更高效的低热量要求的功率转换器。*该提案还将研究电流馈电式电力电子解决方案，因为它们具有电流限制、电压增益和短路保护功能。

The proposal focuses on designing and developing innovative power electronics topologies and novel modulation techniques for marine electrification and more electric aircraft (MEA).******Marine Electrification (Sea transportation) and MEA (air transportation) are two heavy electric transportation systems and of different categories than ground transportation. Significant research on power electronics and drives for ground electric vehicles has been done and is at saturation now. However, power electronics research for marine and MEA is not mature yet. There are different challenges for power electronics for these two applications. Several industries are investigating on power electronics for these marine and MEA due to their different and specific requirements. Research program on marine and MEA is lacking in Canadian Universities. Therefore, the aim of this research proposal is to establish a research program on power electronics for marine and MEA. ******Power electronics is key enabling technology for electrifying the conventional transportation systems. Modulation schemes to control the switching states of the semiconductor devices of power electronics are important to meet the specific requirements and realize the desired attributes such as volume, weight, efficiency, etc. Marine and MEA involve MG power processing. ******To achieve high efficiency for higher power marine system, Medium Voltage (MV) solutions have been proposed and industries are adopting it. However, existing devices have limitation on their blocking voltage. Therefore, Modular Multilevel Converters (MMCs) are proposed for MV high power applications. To limit device switching losses at MV, it is better to modulate the devices at low switching frequency. However, it compromises on total harmonic distortion (THD) of inverter output currents. Therefore, this research program aims at developing Medium Voltage DC (MVDC) MMCs and optimal low frequency modulation for MVDC marine propulsion systems to reduce switching loses while not compromising on THD. ***Power electronic solutions such as matrix converter based direct ac-ac conversion without dc link and Active-Front-End rectifier with dc link will be investigated to eliminate bulky phase-shifting transformer.******For MEA, power electronic solutions to develop ac/dc converter with variable frequency of 360 to 800 Hz will be investigated with minim THD.***The proposed research program will strategize to implement high switching frequency modulation to limit the cost and volume of the magnetics, and filters. Wide bandgap devices, Silicon Carbide (SiC) and Gallium Nitride (GaN) and magnetic materials, Nano Crystalline will be investigated to develop more efficient power converters with low thermal requirements. ***The proposal will also investigate current-fed power electronics solutions owing to their current limiting, voltage gain, and short circuit protection features.