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Lithium Ion batteries usually degrade to an unacceptable capacity level after hundreds or even thousands of cycles. The continuously observed capacity fade data over time and their internal structure can be informative for constructing capacity fade models. This paper applies a mean-covariance decomposition modeling method to analyze the capacity fade data. The proposed approach directly examines...
Lithium ion batteries are widely used for energy storage. Its capacity degradation modeling and cycle to failure estimation has become very significant. Repeated capacity measurements over the whole life of batteries, i.e., the longitudinal data, are investigated to understand the degradation process and the cycle to failure behavior. This paper proposes a method for prognostics of lithium ion batteries...
In multi-robot cooperative control system where robots will complete a common task, it is significant to have a better communication among robots. This paper proposed a multi-robot cooperative control system for the spherical amphibious robot. The aim of this method is to set up a point to multipoint network which supports multiple robots link in. Moreover, Multi-robot cooperative control system is...
Lead acid batteries are one of the most commonly used storage devices in residential renewable energy systems. This paper explains the procedure of calculating required capacity of lead acid battery for a residential based renewable energy system. A renewable energy system (RES) is introduced based on a topology of multi-port converter. The basic required stored energy is defined using averaged load...
A fuzzy based energy management unit (FBEMU) for a renewable energy system (RES) is introduced in this paper. The RES includes solar PV panel and fuel cell stack as renewable sources and Battery and hydrogen tank as storage devices. A multi-port dc-dc converter is employed to integrate the renewable energies and supply the residential load via an inverter. The proposed system is able to operate in...
With the development of tidal current power generation technology, the research on developing of detection and control system, which is suitable for the energy conversion of tidal current generation, is becoming an important component of developing tidal current energy. The paper introduces the basic composition of tidal current power generation system, as well as the detection and control technology,...
The well-to-drag efficiency of PEMFC was investigated following a proton exchange membrane fuel cell (PEMFC) powered underwater glider Dragon. Due to the restriction of power source, the endurance of the legacy gliders is less than a year or has a small active area. To overcome those disadvantages of legacy gliders, the underwater vehicle Dragon was designed and the electrical efficiency of PEMFC...
This paper studies the practical cost-effective DC/DC converter, DC/AC inverter and AC/DC rectifier for an uninterruptible power supply (UPS) system with backup proton exchange membrane fuel cell (PEMFC). Furthermore, a comprehensive controller for the PEMFC is designed according to the change of the load, while the energy storage elements, such as battery and ultracapacitor, are chosen in order to...
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