Design and simulation of a hybrid emergency power system for more electric aircraft

该项目提出了一种更高效、更强大的电源，用于更电动的飞机（MEA）的紧急情况。首先，研究中考虑了由空气驱动发电机（ADG）与电池组并联组成的混合电源。后来，ADG被燃料电池-超级电容器系统所取代。该项目的主要目标是开发一个混合电源模型，并使用仿真和实验结果验证该模型。实现预期目标的方法如下：第一步是对连接到ADG的基本负载进行建模。庞巴迪将提供有关CRJ 900的基本载荷、飞行阶段和载荷顺序、标称和峰值功率要求等信息。根据这些信息，SimPowerSystems （SPS）将开发简化和通用的负荷模型。该项目的下一部分将涵盖adg -电池混合动力系统的设计、建模和仿真。模拟将使用ÉTS （École de technologisusamrieure）开发的通用电池和ADG模型。该项目的下一部分将是设计、建模、模拟和测试混合动力系统，该系统由燃料电池堆与电池和/或超级电容器并联组成。燃料电池和电池的通用模型也由ÉTS开发，将是一个完美的起点。该系统的简化原型将在ÉTS电力电子实验室实施，以便准确确定模型参数并验证模型性能。项目的最后一部分将重点放在MEA中存在的变压器整流单元（TRU）和电静液致动器（EHA）等负载的建模上。本项目提出了燃料电池在航空领域的新应用。随着燃料电池组件（电极、膜和催化剂）和加压氢气罐的最新技术进步，燃料电池可以被认为是飞机电气系统的潜在电源。该项目将有利于飞机公司，不仅在燃料消耗和维护方面，而且在环境方面，因为燃料电池产生的动力具有低毒排放。

This project proposes a more efficient and robust power supply for emergency situations in a more electric aircraft (MEA). At first, a hybrid power supply consisting of an air driven genertor (ADG) connected in parallel with a battery pack is considered for the study. Later on, the ADG is replaced by the fuel cells-ultra capacitor system. The main goals of this project are to develop a model of the hybrid power supply and to validate this model using simulation and experimental results.The methodology to achieve the desired goals is the following: The first step will be to model essential loads connected to the ADG. Bombardier will provide information regarding essential loads, flight phases and load sequencing, nominal and peak power requirement associated with the CRJ 900. Based on that information, simplified and generic load models will be developed in SimPowerSystems (SPS). The next section of the project will cover the design, modeling and simulation of the ADG-battery hybrid system. Generic battery and ADG models developed by ÉTS (École de technologie supérieure) will be used for the simulation. The next part of this project will be to design, model, simulate and test the hybrid system, which consists of a fuel cell stack in parallel with a battery and/or super capacitors. Generic models of the fuel cell and battery also developed by ÉTS will be a perfect starting point for the purpose. A reduced prototype of the system will be implemented at the ÉTS power electronics laboratory in order to determine accurately the model parameters and to validate the model performance. The final part of the project will focus on the modeling of loads such as the transformer rectifier unit (TRU) and the electro-hydrostatic actuator (EHA) which are present in MEA.This project presents a new application of fuel cells in aeronautics. With recent technological advances on fuel cell components (electrodes, membrane and catalysts) and pressurized hydrogen tanks, fuel cells can be considered as potential source in aircraft electrical systems. This project will be beneficial to aircraft companies not only in term of fuel consumption and maintenance, but also environmentally as fuel cells produce power with low toxic emissions.