Direct-Power Control of a Grid-connected Five-phase Permanent-Magnet Synchronous Generator Based on a Five-to Three-phase Matrix Converter

In the paper, a new control of a grid-connected five-phase Permanent-Magnet Synchronous Generator (PMSG) based on a five-to three-phase Matrix Converter (MC) is proposed to reach two main objectives. The first is to develop a [5x3] MC topology to ensure energy conversion from a five-phase wind generator to a three-phase electric grid. Such topology has several attractive aspects over the conventional back-to-back converter, such as a compact size, low cost, small number of power electronic components and absence of a DC-link capacitor. The second objective is to control the active and reactive power injected to the grid from the generator by using a Direct Power Control (DPC) technique whish does not depend on the generator and grid parameters and can be an alternative approach to a field-oriented control in power generation systems. The efficiency of the proposed wind-energy conversion system is simulated by using a MATLAB/Simulink environment.