Abstract In a microgrid system, proper current distribution and load sharing strategies are essential to achieve reliable parallel operation. Line impedance is an important factor when implementing control technique for inverter operation, whether it operating in grid connected or island mode. It sometime difficult visualize the impact of different line power flow AC microgrid. this paper, inve...

Since the limited power capacity, finite inertia, and dynamic loads make the shipboard power system (SPS) vulnerable, the automatic reconfiguration for failure recovery in SPS is an extremely significant but still challenging problem. It is not only required to operate accurately and optimally, but also to satisfy operating constraints. In this paper, we consider the reconfiguration optimizatio...

This paper describes the three-phase grid-connected inverter model for photovoltaic application. The inverter system model and control strategies are carried in MATLAB/SIMULINK environment. Utilizing both proportional-integral controllers for the control loops, and the sinusoidal pulse-width modulation switching signals generation technique for the IGBTs, the inverter control system capable of ...

U O Q U A N T Fraction of surface atoms in contact, A /A f i c  Friction proportional to Ac and Ac proportional to load L for rough surfaces  Flat surfaces in complete contact at any load Molecular Simulations Differ on Applicability of Macroscopic Results at Atomic Scales friction and adhesion in macroscopic models  Results for flat surfaces can be mapped directly to other geometries usi...

A comprehensive model for stochastic load flow analysis in electric power systems is proposed for the purpose of estimating the statistics of bus voltage magnitudes, circuit currents and transmission line power flows. The proposed method is driven by a realistic nonconforming stochastic electric load model, defined in terms of few independent stochastic processes; it is based on the quadratized...

This paper proposes a three phase transformerless AC/AC converter which can perform both buck and boost operations based on the voltage requirements. This AC/AC converter is mainly proposed for the three phase induction motor drives with the intention to reduce the high inrush current of the conventional motor used in industrial applications. The merits of the proposed AC/AC converter can be un...

in emerging electric power systems, increased transactions often lead to the situations where the system no longer remains in secure operating region. the flexible ac transmission system (facts) controllers can play an important role in the power system security enhancement. however, due to high capital investment, it is necessary to locate these controllers optimally in the power system. facts...

Non-intrusive load monitoring takes place in residential and industrial contexts to disaggregate identify loads connected a distribution grid. This work studies the applicability effectiveness for AC railways, considering highly dynamic behavior of rolling stock as an electric load, immersed varying moving loads. Both voltage–current diagrams harmonic spectra were considered identification extr...

Blackouts in recent years have demonstrated that a reliable and secure power system is a key component of an efficient economy. Therefore control devices such as flexible AC transmission system devices (FACTS) are placed in the system and utilised to improve the security of the system. A method to determine appropriate settings for these devices is optimal power flow control. As the area of inf...

Abstract The flexible on-load transformer can be adapted to different application scenarios by adding power electronic converter structures through the use of existing transformers. In this paper, a regulator structure based on floating capacitor multi-level AC/AC is proposed, which compensate input voltage primary side in same direction or opposite direction, combine with tap-changer, and also...