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Sub-synchronous oscillation occurs in frequency less than synchronous frequency, in transmission systems compensated by series capacitor and in a state of equilibrium of the system, it imposes great disturbance which brings about tortional modes with varied frequencies in the shaft of the generator which ultimately can result in fatigue in the shaft of the turbine-generator and even might result in...
In this paper, two different control methods on DC-DC converter, are compared with together. These converters, are used for the stabilization or the control of DC voltage of a battery. In addition to other applications, DC converters feed electric vehicles (trucks, electric vehicles, and subway locomotives), telephone sets and civil inverters. Lately, improvement the performance of the DC-DC converter,...
Static Synchronous Compensator (STATCOM) is a device capable of solving the power quality problems at the power system. These problems happen in milliseconds and because of the time limitation, it requires the STATCOM that has continuous reactive power control with fast response. In this way, optimal exploitation of STATCOM by classical controllers has been a controversial issue in reputable journals...
The use of Distributed Generator (DG), or inverter in parallel forms for the feed of a common load has significant role in the increase of feed reliability. In the use of this technology, the imbalance effect and unequal impedance effects of the lines connected between the inverters and load results in circulating currents between inventers. This leads to the limitation of the capacity of the lines...
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