Abstract
This paper proposes an integrated multiport non-isolated DC–DC converter system for integrating battery–supercapacitor hybrid energy storage with photovoltaics for solar-powered unmanned aerial vehicles applications. Compared to the traditional topologies used, the proposed converter allows a size reduction of at least 20% of the supercapacitor by maximizing the utilization of the rated energy capacity. In addition, by proposing to use a phase-shifted carrier modulation technique, the inductors’ current ripple is reduced, which enables a further reduction in the inductor size. These improvements in capability and performance of the proposed topology are experimentally validated on a 500 W PV/battery–supercapacitor integrated power system prototype.
Highlights
Unmanned aerial vehicles (UAVs) are nowadays experiencing unprecedented technological progress, which promoted them as a significantly cost-effective solution for many applications such as geographical survey, communications support, agriculture, and remote sensing [1–4]
The system consists of the proposed acts as a emulator, and a programmable electronic load that enables the generation of system that interconnects a Li-ion battery, an SC, a programmable power supply that customized load transients
With battery–supercapacitor hybrid energy storage for PV-powered UAV applications was proposed in this paper
Summary
Unmanned aerial vehicles (UAVs) are nowadays experiencing unprecedented technological progress, which promoted them as a significantly cost-effective solution for many applications such as geographical survey, communications support, agriculture, and remote sensing [1–4]. This, in return, introduces more challenges in the design of the ESS, which due to the relatively large amount of energy required, is likely to require a Lithium-ion type of battery, and may result in a contradictory relationship between the specific energy and the specific power that a battery struggles to fulfill In this context, hybrid energy storage systems (HESS) based on high specific energy. In this architecture, the range of the SC voltage, which defines the utilization level of the SC rated energy capacity, allowed by the interfaced converter playing an important role in the sizing. (2) A significantly wider voltage range was available for the SC to maximize the utilization ofisits energyin capacity reduce its of size in terms of SC, analyzed
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