We present a collision model for the charging of quantum battery by identical nonequilibrium qubit units. When units are prepared in mixture energy eigenstates, gain can be described classical random walk, where both average and variance grow linearly with time. Conversely, when qubits contain coherence, interference effects buildup lead to faster spreading distribution, reminiscent walk. This ...

Abstract Quantum batteries are miniature energy storage devices and play a very important role in quantum thermodynamics. In recent years, have been extensively studied, but limited theoretical level. Here we report the experimental realization of battery based on superconducting qutrit. Our model explores dark bright states to achieve stable powerful charging processes, respectively. scheme ma...

A novel, fully decentralized strategy to coordinate charge operation of electric vehicles is proposed in this paper. Based on stochastic switching control of on-board chargers, this strategy ensures high-efficiency charging, reduces load variations to the grid during charging periods, achieves charge completion with high probability, and accomplishes approximate “valley-filling”. Further improv...

The paper describes the design, simulation and practical implementation of a PV system specifically designed for battery charging applications. A DC-DC synchronous Buck converter is digitally controlled by a dsPIC33F to extract the maximum power from the PV panel and feed it to the battery, according to the data received through the sensors. The system proves to be stable to rapid weather chang...

A wireless sensor network is composed of numerous nodes distributed over an area to collect information. The sensor nodes communicate among themselves through the wireless channel to self-organize into a multi-hop network and forward the collected data towards base stations. Each node has sensors, embedded processors and low-power radios, and is normally battery operated. As these nodes are pla...

In this paper, battery/ultracapacitor hybrid energy storage system (HESS) is proposed for electric vehicles, it is used to large dc-dc converter by using ultra capacitor and battery. It is also use the dc link for the purpose of maintain the peak voltage value. By the help of battery and ultracapacitor they are operate. The battery is used to charging the capacitor in case of discharge the capa...

Energy generation and energy storage are two distinct processes that are usually accomplished using two separated units designed on the basis of different physical principles, such as piezoelectric nanogenerator and Li-ion battery; the former converts mechanical energy into electricity, and the latter stores electric energy as chemical energy. Here, we introduce a fundamental mechanism that dir...