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

该提案的重点是设计和开发创新的电力电子拓扑结构和新型调制技术，用于船舶电气化和更多的电动飞机（MEA）。 海上电气化（海上运输）和MEA（空中运输）是两种重型电气运输系统，与地面运输不同。地面电动汽车的电力电子和驱动器的重要研究已经完成，现在处于饱和状态。然而，船舶和MEA的电力电子研究还不成熟。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，一些行业正在研究电力电子。加拿大大学缺乏海洋和多边环境协定方面的研究项目。因此，本研究计划的目的是建立船舶和MEA电力电子学的研究计划。 电力电子技术是改造传统交通运输系统的关键技术。调制方案，以控制电力电子的半导体器件的开关状态是很重要的，以满足特定的要求，实现所需的属性，如体积，重量，效率等海洋和MEA涉及MG功率处理。 为了实现更高功率船舶系统的高效率，中压（MV）解决方案已经被提出并被工业采用，然而，现有的设备在其阻断电压上具有限制。因此，模块化多电平变换器（MMC）被提出用于MV大功率应用。为了限制MV下的器件开关损耗，最好在低开关频率下调制器件。然而，它妥协的总谐波失真（THD）逆变器输出电流。因此，本研究计划旨在开发中压直流（MVDC）MMCs和MVDC船舶推进系统的最佳低频调制，以减少开关损耗，同时不影响THD。 电力电子解决方案，如矩阵变换器为基础的直接交流-交流转换没有直流环节和有源前端整流器与直流环节将被研究，以消除笨重的移相Transformer。 对于MEA，电力电子解决方案，以开发交流/直流变换器与360至800赫兹的可变频率将与最小的总谐波失真进行研究。 拟议的研究计划将制定战略，实施高开关频率调制，以限制成本和体积的磁性，和过滤器。宽带隙器件、碳化硅（SiC）和氮化镓（GaN）以及磁性材料、纳米晶体将被研究，以开发具有低热量要求的更高效的功率转换器。 该提案还将研究电流馈电电力电子解决方案，因为它们具有限流、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.