1. Li, J., Xinbo, R., Wang, X.: SVPWM strategy for line voltage harmonic optimization of cascaded multilevel inverter. Trans. China Electrotech. Soc. 29(06), 120–128 (2014). (in Chinese)
2. Wang, F., Yu, S.: Analysis and suppression of leakage current in cascaded H-bridge inverters. Trans. China Electrotech. Soc. 32(S2), 103–110 (2017). (in Chinese)
3. Wang, L., Han, X., Li, Z., Yang, B.: A novel flying capacitor type Zeta multi-level inverter. Trans. China Electrotech. Soc. 37(01), 254–265 (2022). (in Chinese)
4. Ye, M., Ren, W., Li, S., Wei, Q., Song, G.: Improved PWM technology for cascaded H-bridge inverters based on control carrier degree of freedom. Trans. China Electrotech. Soc. 36(14), 3010–3021 (2021). (in Chinese)
5. Annamalai, T., Udhayakumar, K.: A new multi-level inverter with reduced number of switches based on modified H-bridge. Int. J. Power Electron. 10(1/2) (2019)