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Macro-model Based SPICE Simulation of DC/DC Switching Regulators C. Bunlaksananusorn
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... Letting the controlled source Eg be equal to V(1-Vin), Req or negative voltage, depending on whether Vc is greater or smaller than Vsaw, is clamped to one and zero respectively becomes by a voltage clamp circuit. Rc and Cc are a very small resistor and capacitor added only to aid simulation (1 − Vin ...
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... frequency. Purely resistive circuits such as filament lamps or heaters, when powered from the mains, draw a current that is directly proportional to the applied voltage, and do not create any extra harmonic components. By contrast, non-linear circuits do draw a non-sinusoidal current, despite the ap ...
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... Figure.1 Three phase two level voltage source inverter Space Vector Modulation (SVM) [1] was originally developed as vector approach to Pulse Width Modulation for three phase inverters. It is a more sophisticated technique for generating sine wave that provides higher voltages with lower total harmo ...
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... both active and reactive powers has achieved by RSC control. DFIG has also been verified at wind turbine stalling condition for compensating harmonics and reactive power of local loads. Proposed DFIG-based WECS with an integrated active filter has been simulated using MATLAB/Simulink environment, an ...
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2014 RA420 PEMC2014 135-Ozsoy

... because of several advantages summarized in introduction. Robustness of the system is essential due to direct connection of stator windings to the grid. This study demonstrated a novel current controller which is robust against machine parameter variations. Experimental results obviously show decoup ...
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Islanding

Islanding refers to the condition in which a distributed generator (DG) continues to power a location even though electrical grid power from the electric utility is no longer present. Islanding can be dangerous to utility workers, who may not realize that a circuit is still powered, and it may prevent automatic re-connection of devices. For that reason, distributed generators must detect islanding and immediately stop producing power; this is referred to as anti-islanding.The common example of islanding is a grid supply line that has solar panels attached to it. In the case of a blackout, the solar panels will continue to deliver power as long as irradiance is sufficient. In this case, the supply line becomes an ""island"" with power surrounded by a ""sea"" of unpowered lines. For this reason, solar inverters that are designed to supply power to the grid are generally required to have some sort of automatic anti-islanding circuitry in them.In intentional islanding, the generator disconnects from the grid, and forces the distributed generator to power the local circuit. This is often used as a power backup system for buildings that normally sell their excess power to the grid.
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