Читать книгу Hybridized and Coupled Nanogenerators - Ya Yang - Страница 24

In some ground locations or elevated locations, standalone wind turbines have been used to harvest wind energy. To realize broader applications, some researchers expect to design small‐scale standalone wind power sources, and they must conquer some key questions, such as challenges of low capacity factor, high costs, and finite capacity to store electricity. HAWTs and VAWTs have been widely used in the urban environment to transform wind energy to electricity generation because their sources are close to the electrical load. Recently, there are some systems that have been integrated into the ambient environment. For example, micro‐wind turbines, which can be mounted on existing homes, form one of the techniques for application in urban environment (Figure 2.1c) [30]. On urban expressways, novel turbines are used to capture the energy generated by driving cars at high speeds (Figure 2.1d) [30,31].