The Photovoltaic (PV) plants are significantly different from the conventional synchronous generators in terms of physical and electrical characteristics, as it connects to the power grid through the voltage-source converters. High penetration PV in power system will bring several critical challenges to the safe operation of power grid including transient stability. To address this problem, the...

The renewable energy take part in the most of electric power systems modern world. this type global system, as well local scale, increases with setting stricter requirements for decreasing level carbon dioxide emissions. This is result newest international conventions and decision saving nature. By these conditions, are forced to work more different types sources: wind power, photovoltaic, biom...

Among the alternative methods for energy storage , using the potential energy of water stored in different heights has been considered by human for ages. Storage pumping plants have been invented for this purpose and are considered as one of the most reliable and effective methods of storing the electrical energy. Factors such as having appropriate static and dynamic stability, high efficiency,...

The electrical energy generated from renewable resources connected to transmission and distribution systems the displacement of synchronous generators continues grow. This presages a paradigm-shift away traditional provision ancillary services, essential ensure robust system, transmission-connected towards non-synchronous generation (including distribution-connected resources). Given that avail...

Permanent magnet synchronous generators (PMSG) have a huge potential for direct-drive wind power applications. Therefore, optimal design of these generators is necessary to maximize their efficiency and to reduce their manufacturing cost and total volume. In this paper, an optimal design of a six-phase 3.5 KW direct-drive PMSG to generate electricity for domestic needs is performed. The aim of ...

In this article the influence of higher frequency effects in addition to a special damper design on the electrical behavior of a synchronous generator main exciter machine is investigated. On the one hand these machines are often highly stressed by harmonics from the bridge rectifier thus facing additional eddy current losses. On the other hand the switching may cause the excitation of dangerou...

The synchronization phenomena occurring in a population of Fast Spiking interneurons, coupled by electrical and inhibitory synapses, are investigated. It is shown numerically that there are regions of the coupling parameters space where synchronous regimes occur. The corresponding theoretical results agree with the numerical ones. It is shown that the presence of the electrical coupling in a he...

Abstract The microgrid dominated by new energy has small inertia and weak damping, while a virtual synchronous generator (VSG) is an effective means to enhance damping improve the stability of microgrid. However, it also introduces power angle oscillation problems similar that machines. This paper based on current inner loop voltage outer control three-phase LCL inverter. It coefficient generat...

After losing one or two poles of the high-voltage DC (HVDC) line, power systems may experience angular oscillations among synchronous generators (SGs), possibly followed by tripping SGs and blackouts loads. To suppress oscillations, difficulty lies in optimization methods countermeasures. For former, parameter based on eigen-analysis for a given scenario is not suitable oscillation after large ...

In recent years, there has been a fast growth in wind energy conversion system (WECS). There are two general types of wind turbines in WECS: fixed speed wind turbines and varying speed wind turbines.Permanent magnet synchronous generator (PMSG) is one of the most attractive generators for the varying speed turbine WECS.In this paper, a fuzzy controller is proposed to control the current source ...