Matrix converter topology for distributed energy applications

With increasing levels of distributed generation systems connecting into the electrical grid, power electronics converters are widely applied to interface these systems to the grid and to provide various control functionalities. This paper presents a novel matrix converter topology with adapted control strategies for energy conversion in distributed energy systems. This topology with the associated control strategies offers the possibility to connect a high speed or variable speed generator to the grid as well as auto-start-up of the prime mover, gas turbine in this case. The proposed matrix converter topology performs two complementary functions. Start-up function during which a DC to AC conversion is performed from a battery to ensure the turbine start-up, and AC to AC conversion to connect the generator to the grid. Simulations and experiments on a 3 kW test bench are carried out to show that the proposed generating system is effective and provides a new solution for variable/high speed generating systems. Control law was implemented on DSP controller, experimental results are presented.