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The short-circuit contribution of Inverter interfaced systems is determined by the control architecture, generally limited to 110%–150% of rated current and is generally not sustained past a cycle or two. IEEE1574 compliant inverters with anti-islanding may trip without contributing to a fault. However, as technology moves towards ride-through for remote faults, the modeling of these inverters becomes...
With a steep rise in wind farms around the world, Doubly Fed Asynchronous Generator (DFAG) has emerged as a popular machine. Also known as Type 3 wind turbine generator (WTG), this machine employs the well-known principle of injection and control of slip-frequency voltage into the rotor circuit to achieve performance over a large range of speed. Though extensive literature is available related to...
In recent years, many countries have started to integrate the power system with more advanced information and communication technologies. With transforming the electrical data to useful information, the stability and reliability of power system operation can be secured. By observing this world-wide trend, it is believed that the development of smart grid would be the vital strategy for energy saving,...
This paper explores the sizing of shunt connected energy storage devices for damping power system oscillations. An analysis based on small signal modeling of synchronous generator incorporating energy storage is presented and is compared with simulations in PSCAD/EMTDC. This model may provide insight into energy storage system rating and the damping achieved. The rating issue is also explored by comparing...
Microcontrollers are widely used for control in power electronics. They provide real time control by processing analog signals obtained from the system. A suitable isolation interface needs to be designed for interaction between the control circuit and high voltage hardware. This paper presents the design and application of a signal conditioning unit which provides necessary interface between a high...
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