Abstract
Variable Frequency Transformer (VFT) is a
controllable bi-directional transmission device that can
transfer power between asynchronous networks. It avoids both
HVDC link and FACTS based power transmission control
system. Basically, it is a rotatory transformer whose torque is
adjusted in order to control the power flow. In this paper, a
simulated model of VFT is used as a controllable bidirectional
power transmission device that can control power flow through
the connected asynchronous power systems. A simulation
model of VFT and its control system models are developed
with MATLAB and a series of studies on power flow through
asynchronous power systems are carried out with the model.
The response characteristics of power flow under various
torque conditions are discussed. The voltage, current, torque
and power flow plots are also obtained.
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