1. Alishah, R.S., Hosseini, S.H., Babaei, E., Sabahi, M.: Optimal design of new cascaded switch-ladder multilevel inverter structure. IEEE Trans. Ind. Appl. 64(3), 2072–2080 (2017)
2. Babaei, E., Hosseini, S.H., Gharehpetian, G.B., Haque, M.T., Sabahi, M.: Reduction of dc voltage sources and switches in asymmetrical multilevel converters using a novel topology. Electr. Power Syst. Res. 77(8), 1073–1085 (2007)
3. Babaei, E., Laali, S., Alilu, S.: Cascaded multilevel inverter with series connection of novel H-bridge basic units. IEEE Trans. Ind. Electron. 61(12), 6664–6671 (2014)
4. Babaei, E., Laali, S., Bayat, Z.: A single-phase cascaded multilevel inverter based on a new basic unit with a reduced number of power switches. IEEE Trans. Ind. Appl. 62(2), 922–929 (2015)
5. Babaei, E.: A cascade multilevel converter topology with reduced number of switches. IEEE Trans. Power Electron. 23(6), 2657–2664 (2008)