Novel Multi-Carrier PWM Method for a Three-Phase Cascaded H-Bridge Multi-Level Inverter

A number of modulation strategies are used in multi-level power conversion applications. This paper is focused on novel multi-carrier PWM methods which have been extended for use in cascaded H-bridge multi-level inverter. Novel multi-carrier PWM method can be optimized or balanced the switch utilization in cascaded H-bridge multi-level inverter. Five-level cascaded H-bridge multi-level inverter has been simulated and controlled with the novel multi-carrier PWM proposed in this paper to act as a voltage-source inverter (VSI)

[1]  M. Fracchia,et al.  Optimized modulation techniques for the generalized N-level converter , 1992, PESC '92 Record. 23rd Annual IEEE Power Electronics Specialists Conference.

[2]  L.M. Tolbert,et al.  Novel multilevel inverter carrier-based PWM methods , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[3]  Alfred Rufer,et al.  A Generalized Design Principle of a Uniform Step Asymmetrical Multilevel Converter For High Power Conversion , 2001 .

[4]  Brendan Peter McGrath,et al.  Multicarrier PWM strategies for multilevel inverters , 2002, IEEE Trans. Ind. Electron..