Power Quality Improvement Using UPQC for Wind Farm Generation System
Abstract
Comparing with single-phase TM boost converter, both the input and output current ripple of the proposed push-pull quasi-resonant boost converter can be reduced if the equivalent inductance of the coupled inductor equals the inductance of single-phase TM boost converter. Therefore, both the PF value and the power density are increased. In addition to the equal distributions of the input current and output current, the proposed topology with a cut-in-half duty cycle can reduce the conduction losses of the switches and both the turns and diameters of the inductor windings.It also maintains the advantages of a TM boost converter, such as QR valley switching on the switch and zero-current switching (ZCS) of the output diode, to reduce the switching losses and improve the conversion efficiency.
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