The effect of the hysteresis band on power management strategies in a stand-alone power system

Infrastructure, automation and model-based operation strategy in a stand-alone hydrolytic solar-hydrogen production unit

“…The first case study refers to the analysis of the system sensitivity to the variations of SOC elec limit. As similarly presented in previous studies [10,11], the minimum SOC limit is a key parameter for the operation of the accumulator because it defines its lifetime expectancy. The Depth of Discharge (DOD) is defined as the difference between the maximum and the minimum recorded operation limit of the SOC of the accumulator.…”

“…The SOC of the accumulator refers to the available capacity of the accumulator and is given by a function of time and operation current and is simply the fraction of the reported capacity of the accumulator at each time instant divided by its nominal capacity [10,11]:…”

“…Secondly, a validated mathematical model and its utilization in a power management strategy will allow parametric sensitivity analysis and further optimization studies in order to determine optimal operation levels, which can supply feedback for an effective real time operation. The authors' previous work has contributed to the mathematical modelling and power management development [10,11], as well as, to the design and evaluation of automation and implementation issues [12,13] on a RES-hydrogen power system located at N. Olvio Xanthi, Greece.…”

Energy control strategies for the Fuel Cell Hybrid Power Source under unknown load profile

“…So, the series HPS architecture is used here to exploit direct connection of the battery to the DC bus and other advantages shown in Refs. [11,17e19] based on the minimization of the equivalent fuel consumption [11], hysteresis band [17], state machine [18], or fuzzy logic control [19].…”

Integration of Renewable Energy into Present and Future Energy Systems

“…Several simulation analyses, demonstration assessments and commercial operations of the application of energy storage technologies to autonomous systems have been reported. These include solar PV plus wind with hydrogen storage in Greece (Ipsakis et al, 2009) Alternatively, a portfolio of RE and non-RE technologies could be integrated to enhance system reliability. For example, small diesel-or gasoline-powered gensets and dump load (usually a resistance heater to use any excess electricity generated above the demand) could be cheaper to operate than having batteries for short periods when wind or solar resources are not available (Doolla and Bhatti, 2006).…”