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In the recent development of railway traction drives, four-quadrant converters are widely adopted at the grid side as front-end converters. Since the switching frequency of such megawatt-rated converters is limited to several hundreds of hertz, the bandwidth of the current controller is usually restricted. In addition to feedback control of instantaneous current, indirect current control (ICC) is...
As a dominant distributed generation (DG), wind power turbines are expanding in the grid. However, when large-scale wind farms integrated with the weak grid, it will change the power flow distribution, voltage profile which results in profound influence on transient stability of the power grid. It is important to study the dynamic response characteristics of the wind power generator in the case of...
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