Generalized S-transform is a time-frequency analysis method which has higher resolution than S-transform. It can precisely extract the time-amplitude characteristics of different frequency components in signal. In this paper, novel protection for VSC-HVDC (Voltage source converter based high voltage DC) on proposed. Firstly, extracting component fault current by and using mutation point to dete...

In this paper, in order to increase the efficiency, to reduce the cost and to prevent the failures of wind turbines, which lead to an extensive break down, a robust fault diagnosis system is proposed for V47/660kW wind turbine operated in Manjil wind farm, Gilan province, Iran. According to the acquired data from Iran wind turbine industry, common faults of the wind turbine such as sensor fault...

A feed forward neural network (FFNN) has been trained to discriminate between power transformer magnetizing inrush and fault currents. The training algorithm used was back-propagation, assuming initially a sigmoid transfer function for the network’s processing units (“neurons”). Once the network was trained the units’ transfer function was changed to hard limiters with thresholds equal to the b...

Contents Introduction 1 1 System model 4 1.

One of the most important characteristics of the plane is its weight: every pound shaved oo the plane means a pound added to the carrying ability of this plane. As a result, planes are made as light as possible , with its \skin" as thin as possible. However, the thinner the layer, the more vulnerable is the resulting structure to stresses and faults, and a ight is a very stressful experience. T...

Aerospace testing: why. One of the most important characteristics of the plane is its weight: every pound shaved oo the plane means a pound added to the carrying ability of this plane. As a result, planes are made as light as possible, with its \skin" as thin as possible. However, the thinner the layer, the more vulnerable is the resulting structure to stresses and faults, and a ight is a very ...

Thermal expansion of materials is fundamental practical relevance and arises from an interplay several material properties. For nanocrystalline materials, accurate measurements thermal based on high-precision reference dilatometry allow inferring phenomena taking place at internal interfaces such as vacancy annihilation grain boundaries. Here we report obtained for a severely deformed 316L aust...

FinFET memory is widely used in various semiconductor products due to its good read/write margin, lower power consumption, and faster driving speed. However, the forked 3D physical structure increased density of storage are very susceptible manufacturing defects, which may cause functional logic faults that different from traditional planar CMOS memories. Therefore, it critical explore an effec...