A novel indirect quasi-Z-source matrix converter applied to induction motor drives

The traditionally matrix converter is a buck AC-AC power conversion and the maximum voltage gain is limited to 0.866. The paper proposes a new indirect quasi-Z-source matrix converter, to extend the voltage gain for application in the induction motor drives, and then the operation principle and control scheme are clarified. A simulated application in a 4 kW induction motor drive is carried out. Theoretical calculations and feasibility of the proposed topology are verified. The proposed indirect quasi-Z-source matrix converter can boost voltage gain larger than one.