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The three-phase voltage source converter (VSC) suffers from complex dynamics due to large signal disturbances such as grid voltage dips. In this paper, the instability phenomena of current loop and voltage loop are identified in three-phase grid-connected VSCs. Moreover, the interaction of the voltage loop and current loop is analyzed. Thus, the fault current under such situation can be calculated...
The use of LCL-filter for reducing current harmonics has been commonly used for converters connected to the power grid. However, under non-ideal power grid condition, a converter using an LCL-filter may interact with other converters connecting to the grid. In this paper, a three-phase voltage source converter using an LCL-filter is studied. Simulations show that resonant oscillation occurs in the...
Multiple-input dc/dc converters are widely used in hybrid power systems which normally derive power simultaneously from several renewable energy sources and deliver power continuously to the load. Due to intermittent features of the available energy from the renewable sources, such multiple-input conversion systems are often designed with multiple structures and multiple operating modes, and their...
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