This paper presents a novel approach to determinethe power system stability using resistive superconducting faultcurrent limiter (SFCL) of an electric power grid (EPG). Inaddition, the electric railwaysystem has rapidly changing loadcharacteristics in time. An unbalance is generated owing to therapidly changing large single-phase loads. Subsequently, the unbalanced load causes an unbalanced tra...

There is cause and effect relationship between increase in load due to increasing penetration of electric vehicles (EV) load that causes unbalanced conditions and affect the power quality such as voltage degradation and even damage the equipment if the system is not properly managed. This paper presents detailed review of energy supply and management in conjunction with load synchronization thr...

this paper proposes a flexible power electronic transformer (fpet) for the application in the micro-grids. the low frequency transformer is usually used at the point of common coupling (pcc) to connect the low voltage grid and utility network to each other. the conventional 50hz transformer results in enhanced low voltage-grid power management system during grid-connected operation. in this pap...

in this paper, we investigated the necessity and effects of optimal control methods in the stability and performance of a micro-grid that operates in islanded mode. the micro-gird is consisted of a combine heat and power (chp), a capacitor bank (cb), photovoltaic panel (pv) as power generation sources. in addition, battery and the building electricity and thermal load are placed on the load sid...

(Abstract) This dissertation aims to present a detailed analysis of the grid voltage disturbance in frequency domain for the current control design in the grid-tie inverter applications and to propose current control techniques in order to minimize its impact and maximize feasibility of the power conditioning system in distributed generations. Because the grid voltage is constantly changing, th...

In this paper, we evaluate strategies of domain decomposition in Grid environment to solve mesh-based applications. We compare the balanced distribution strategy with unbalanced distribution strategies. While the former is a common strategy in homogenous computing environment (e.g. parallel computers), it presents some problems due to communication latency in Grid environments. Unbalanced decom...

Due to the advantages of low harmonic, pollution power grid, and easy filtering, multilevel inverters have attracted more attention in recent years. In this paper, a five-level inverter based on differential structure is proposed. It doesn’t need an additional bridge arm change polarity output voltage, but synthesize generating multiple voltages changing voltage. addition, special symmetrical s...

Various faults and disturbances often make the grid unbalanced distorted. To grid-connected converters resilient to distorted grid, real-time estimation of voltage sequences are essential. Adaptive-observer based grid-synchronization techniques very suitable for this purpose. In paper, a comparative analysis three recently proposed adaptive observer-based technique presented frequency sequence ...