Multilevel indirect matrix converter with carrier-based pulse width modulation

This paper proposes a multilevel indirect matrix converter (IMC) topology with multilevel output voltages and its simplified carrier-based pulse-width modulation (PWM) method. This converter consists of two rectifier stages used in traditional three-phase IMC and three-level T-type voltage source inverter. Beside a proposed IMC topology, the carrier-based PWM method suitable for this converter is also introduced. Proposed EVIC topology features the advantages of conventional three-phase EVIC, such as sinusoidal input/output current waveforms, controllable input power factor and simple commutation at the rectifier stage. Furthermore, as compared to the conventional three-phase IMC, the proposed converter has the ability to synthesis the multilevel output voltages and to generate high output voltage. Analysis and simulation results are provided to verify the feasibility of the proposed IMC topology and PWM method.