Electricity from sunlight is truly "green" and inexpensive but requires an energy conversion system with photovoltaic (PV) cells and a storage unit, such as a battery.

来自于日光的电能是真正“绿色”和廉价的能源，但是需要基于光伏(PV)电池和存储设备(例如电池)的能量转换系统。

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Design of the hybrid energy storage system power conversion unit circuit topology, the energy storage system of the compound of the working principle and developed a digital control strategy.

设计了复合储能系统功率变换单元电路拓扑，阐述了该复合储能系统的工作原理并制定了数字化控制策略。

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To provide the energy to accomplish secure operations in powered-off SRAM, a fully integrated power supply system to realize the on-chip acquisition, storage, and conversion of energy is proposed.

提出了一种能实现片上能量获取、存储、转换的全集成电源系统，为掉电后的SRAM提供进行安全操作所需的能量。

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But for a solar eternal plane to be exactly that it needs an efficient energy harvesting, conversion and storage system that will work when the Sun has set.

BBC: NEWS | Science/Nature | 'Eternal planes' to watch over us