A Hybrid PV-Battery Unit Optimised for LV Grids Using GaN Transistors

在他们的“绿色绿色”部署方案下，国家电网预测，未来20年，英国的光伏发电量预计将从2吉瓦增加到15吉瓦。这是由英国在安装可再生能源和减少温室气体方面的法律的义务、能源成本的上升以及对供应安全的担忧--所谓的能源“三难困境”--推动的。电力电子转换器是光伏和其他低碳技术（LCT）的关键使能技术。然而，LCT的使用导致了配电网的问题，如供电电压失真和过电压，这威胁到限制或延迟其吸收。该项目旨在通过利用新型氮化镓功率晶体管模块的优势来缓解这一威胁，该模块将被开发用于住宅应用的混合光伏电池单元，但将具有更广泛的应用，例如电动汽车充电和微型热电联产。这些单元将比现有的硅基单元更小，更轻，成本更低，它们的部署将导致网络上最大允许安装容量的增加。

Under their “Gone Green” deployment scenario, National Grid forecast that energy generated fromphotovoltaics (PV) in the UK is expected to rise from 2 to 15 GW over the next 20 years. This is being driven bythe UK’s legal obligations around installing renewable energy sources & cutting greenhouse gases, the risingcost of energy & concerns around the security of supply – the so-called energy “trilemma”. Power electronicconverters are a key enabling technology for PV and other low-carbon technologies (LCTs). However the use ofLCTs has resulted in problems for the electrical distribution nerwork such as supply voltage distortion and over-voltages, which threaten to limit or delay their uptake. This project aims to mitigate this threat by exploitingthe benefits of a new Gallium Nitride power transistor module, which will be developed for use in a hybrid PV-battery unit for residential applications, but will have much broader applications e.g. electric vehicle charging &micro-CHP. These units will be much smaller, lighter & have lower cost than existing Silicon based units andtheir deployment will lead to an increase in the maximum allowable installed capacity on the network.