Matrix converters are forced commutated single stage AC/AC direct frequency changers able to achieve sine wave in and out operation by being able to connect any input phase to any output phase via a 3x3 matrix of bi-directional switches. Indirect two-stage matrix converters provide similar input and output performance with no passive component in the dc-link, some of these topologies requiring less switching devices or achieving multilevel output voltage capability. This paper proposes a new indirect matrix converter topology with a three-level phase to neutral output voltage capability and reduced number of devices. A new Space Vector Modulation scheme with restricted switching states is proposed, being able to provide sine wave input and output, which is validated by simulation results.
Klumpner, C., Lee, M. Y., & Wheeler, P. (in press). A new three-level sparse indirect matrix converter. In IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics. https://doi.org/10.1109/IECON.2006.347958