High Power Density Hybrid Si-WBG Type of Converters for high Performance High Density Electric Motor Drives Applications

电力电子转换器（佩奇）是用于AC到DC电力转换的普遍且最有效的技术，反之亦然。它们被用于各个行业，从电动汽车（EV）充电器到变速电机驱动器，加热，通风和空调（HVAC）系统等，其中超过70%的生产能量通过利用这些设备进行转移和转换。本研究计画引进可扩充电力电子转换器技术的新概念。这种新方法允许集成增强的高功率密度和高效率的基于混合宽带隙（WBG）的多级电力电子转换器配置，从而为其增加了灵活性，这允许增加整个电力转换系统的额定功率和弹性。此外，几个转换器的适当并联需要特殊的控制和调制技术来消除或减轻逆变器之间的环流和相等的功率共享。需要新颖的控制技术和调制方法来提供快速的瞬态响应、在PWM逆变器之间的相等功率共享、最小化环流，从而确保可靠、灵活和冗余的控制。因此，本研究项目的目标可以概括如下。首先，将开发完全工业化的高功率密度和高效率的基于三相混合WBG的多电平电力电子转换器单元（MPECC），其包括体积功率密度高于4 kW/dm 3且效率高于98.5%的所有无源和有源组件。然后，一个可扩展的模块化双向背靠背多电平转换器包括两个不同的并行配置的MPECC将被开发。

Power electronic converters (PECs) are a prevalent and most efficient technology for AC to DC power conversion and vice versa. They are used in every industry, from electric vehicle (EV) chargers, to variable-speed motor drives, heating, ventilation, and air conditioning (HVAC) systems, and so on where more than 70% of the produced energy transferred and converted by utilizing these devices. This research project introduces new concept of scalable power electronic converters technology. This new approach allows for integrating enhanced high power density and high efficiency hybrid wide bandgap (WBG) based multilevel power electronic converter configurations adding to it the flexibility which permit to increase the power rating and resiliency of the overall power conversion system. Moreover, proper paralleling of several converters necessitates special control and modulation techniques to eliminate or mitigate circulating current and equal power sharing between inverters. Novel control techniques and modulation methods for paralleled inverters for providing fast transient response, equal power sharing between the paralleled inverters, minimizing circulating current, ensuring therefore reliable, flexible, and redundant control are required. Accordingly, the objective of this research project can be summarized as follows. First, a fully industrial high-power density and high efficiency three-phase hybrid WBG based multilevel power electronic converter cell (MPECC) including all passive and active components with volumetric power density higher than 4 kW/dm3 and efficiency higher than 98.5% will be developed. Then, a scalable modular bidirectional back-to-back multilevel converter comprising two different parallel configurations of MPECCs will be developed.