The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Modelling and simulation of emerging DC shipboard power system (SPS) is required to validate the hardware design, converter control and protection algorithms. As DC SPSs may be large and complicated, the simulation of such systems using high fidelity models generally consumes much time and the validation of performance using multiple test scenarios becomes impractical. An alternative method is to...
Several techniques have been developed to estimate the load parameters in power systems. Most of the algorithms mainly focus on estimating the parameters for offline studies. With ongoing smart grid development, high-resolution data at fast rates are available to allow load modeling in real-time. This paper addresses the challenges in online estimation of the load parameters using Phasor Measurement...
In DC microgrids, effective power management in real time is important for optimum management of energy, resources, storage elements and loads. Power imbalance in the grid may also lead to fluctuation of grid voltage, which will adversely affect the reliability of the microgrid and may damage the loads. In this paper, different strategies for power management in the DC microgrids will be classified...
Recent advances in real time simulators (RTS) made it possible to create test facility using hardware in loop (HIL) for verification of complex control functions of power electronics systems in safe and reliable environment. Models of multilevel converter topologies will have very complex discrete calculations which will make it cumbersome to get convergence of all state variables within a small and...
Approximate analytical solution of linear or nonlinear ordinary differential equations (ODE) can be obtained by Adomian decomposition (ADM) method. The nonlinearities in the ODEs are approximated by Adomian polynomials and a rapidly convergent sequence of approximate functions will be obtained as a solution. The ADM is widely used for numerical simulations of real-world systems in the applied sciences...
The paper demonstrates phasor and time domain hybrid simulation in real-time. A 55bus distribution grid is simulated in phasor domain and a solar photovoltaic with battery storage and some residential loads are modeled in time domain. This hybrid simulation is achieved using OPAL-RT Technologies real time solution called ePHASORsim for phasor domain and eMEGAsim for the time domain simulation. In...
In this paper, an agent based energy market model is proposed for microgrids with Distributed Energy Storage Systems (DESS) such as building integrated storage systems and PEVs with V2G. The uniqueness of the proposed market model is that the charging and discharging schedules of DESSs is prepared through an auction mechanism which relies on the real-time energy supply and demand in the microgrid...
In this paper, a permanent magnet synchronous generator (PMSG) is emulated using power hardware in-the-loop (PHIL). This emulation scheme provides a method to eliminate risks and costs associated with the testing, prototyping and validation of control structures and power converter topologies that form parts of a motor drive system. The proposed implementation scheme can be used to test drives for...
In this paper, the design of a pressure retarded osmotic (PRO) power system and its basic operational model is presented. In the proposed system, power is generated (at estuaries where the river meets sea) due to the difference in salt concentration between the water sources. A hydro-electric power system is designed and emulated in real-time for isolated loads up to 12 kW power. The emulator provides...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.