Portable solar chargers are one of the technologies that can help to achieve universal access to electricity by 2030. However, the large number of solar photovoltaic devices required and their short life-span make achieving this goal a resource and energy intensive process. To reduce the embodied energy, the embodied carbon and the human and eco-toxicity potential of portable solar chargers, solar photovoltaic concentrators can be used. This paper proposes a new nonimaging solar photovoltaic concentrator design which has material efficiency, portability and off-grid use as its main feature. The main contribution of this paper is the design method of the new 3D nonimaging concentrator containing the parametric equation of the concentrator surfaces and the numeric optimisation of the design parameters. The developed optimisation program is based on genetic algorithms which parameters were determined experimentally in this paper. The concentrator design achieved with this method is 43% less material intensive than the most compact nonimaging solar concentrator available in literature. This design approach can be used to find concentrator designs with specific volumes, heights, concentration ratios, acceptance angles and optical efficiency. It is therefore a step towards more material efficient and more sustainable nonimaging concentrators as well as more sustainable portable solar photovoltaic systems.

便携式太阳能充电器是可以帮助在2030年之前实现普遍用电的技术之一。但是，所需的大量太阳能光伏设备及其短寿命使实现该目标成为资源和能源密集型过程。为了减少所包含的能量，所包含的碳以及便携式太阳能充电器的人类和生态毒性潜力，可以使用太阳能光伏聚光器。本文提出了一种以材料效率，便携性和离网使用为主要特征的新型非成像太阳能光伏聚光器设计。本文的主要贡献是新型3D非成像集中器的设计方法，其中包含集中器表面的参数方程式和设计参数的数值优化。所开发的优化程序基于遗传算法，本文通过实验确定了参数。与文献中最紧凑的非成像太阳能聚光器相比，用这种方法实现的聚光器设计节省了43％的材料。这种设计方法可用于查找具有特定体积，高度，浓度比，接收角和光学效率的聚光器设计。因此，这是朝着提高材料效率和可持续性的非成像聚光器以及更具可持续性的便携式太阳能光伏系统迈出的一步。这种设计方法可用于查找具有特定体积，高度，浓度比，接收角和光学效率的聚光器设计。因此，这是朝着提高材料效率和可持续性的非成像聚光器以及更具可持续性的便携式太阳能光伏系统迈出的一步。这种设计方法可用于查找具有特定体积，高度，浓度比，接收角和光学效率的聚光器设计。因此，这是朝着提高材料效率和可持续性的非成像聚光器以及更具可持续性的便携式太阳能光伏系统迈出的一步。