Unsymmetric Control of a Matrix Converter for Two-Phase Inductive Melting Furnaces

Currently, induction motor drives and other symmetrical, three-phase inductive loads are the main applications of matrix converters. If only two loads are connected to matrix converters, the conventional control algorithms cannot be applied as usual due to the unsymmetrical load. To extend the application of matrix converters to unbalanced loads this paper derives a novel angle-modulation strategy and illustrates how to alter a carrier based PWM modulation algorithm to control the output phases of the matrix converter independently. Eventually, system level simulation results are provided to verify the feasibility.