A New Application of the Multi-Resonant Zero-Current Switching Buck Converter: Analysis and Simulation in a PMSG Based WECS

Abstract

Abstract:A new application of the three-phase buck-resonant converter is presented in this paper. It is shown that the analyzed converter is suitable to operate as the rectifier stage in low power wind energy conversion systems (WECS) based on permanent magnet synchronous generators (PMSG) with variable wind speed. As main features, it presents a single controlled switch, simple implementation and control, and operates with a high power factor and low harmonic distortion over all wind speed ranges. The converter topology, its design equations and its operation are presented, as well as the simulation results of the PMSG based conversion system. From the analysis carried out in the paper it is concluded that the converter is indicated to be employed in distributed generation and hybrid systems where wind generation is associated with other sources.

Co-simulation and hardware realization of PMSG–WECS based on current source inverter for grid synchronization

“…To achieve the voltage with constant magnitude, the rectified voltage is fed into the buck-boost converter. The control algorithm (Freitas et al, 2015) for the converter is modified to reduce the overshoot of the voltage. The voltage conversion ratio is denoted by…”