[1] Zhang X.,Wu X., Geng C., Ping X., Chen S., Zhang H., An Improved Simplified PWM for Three-Level Neutral Point Clamped Inverter Based on Two-Level Common-Mode Voltage Reduction PWM, IEEE Trans. Power Electronics, vol. 35, no. 10, pp. 11143–11154 (2020).
[2] Kaniewski J.Z., Power flow controller based on bipolar direct PWM AC/AC converter operation with active load, Archives of Electrical Engineering, vol. 68, no. 2, pp. 341–356 (2019).
[3] Beniwal N., Townsend C., Farivar G., Pou J., Ceballos S., Tafti H., Band-Limited Three-Level Modulation for Balancing Capacitor Voltages in Neutral-Point-Clamped Converters, IEEE Trans. Power Electronics, vol. 35, no. 9, pp. 9737–9752 (2020).
[4] Pham K., Nguyen N., A Reduced Common-Mode-Voltage Pulsewidth Modulation Method With Output Harmonic Distortion Minimization for Three-Level Neutral-Point-Clamped Inverters, IEEE Trans. Power Electronics, vol. 35, no. 7, pp. 6944–6962 (2020).
[5] Li C., Yang T., Kulsangcharoen P., Lo Calzo G., Bozhko S., Gerada C., Wheeler P., A Modified Neutral-Point Balancing Space Vector Modulation for Three-Level Neutral Point Clamped Converters in High Speed Drives, IEEE Trans. Ind. Electronics, vol. 66, no. 2, pp. 910–921 (2019).
[6] Jordi Z., Josep P., Salvador C., A Comprehensive Study of a Hybrid Modulation Technique for the Neutral-Point-Clamped Converter, IEEE Trans. Ind. Electronics, vol. 56, no. 2, pp. 294–304 (2009).
[7] Nguyen T.K.T., Nguyen N.-V., Prasad N.R., Eliminated common mode voltage pulse width modulation to reduce output current ripple for multilevel inverters, IEEE Trans. Power Electronics, vol. 31, no. 8, pp. 5952–5966 (2016).
[8] Lee J.S., Lee K.B., Time-Offset Injection Method for Neutral-Point AC Ripple Voltage Reduction in a Three-Level Inverter, IEEE Trans. Power Electronics, vol. 31, no. 3, pp. 1931–1941 (2016).
[9] McGrath B.P., Holmes D.G., Meynard T., Reduced PWM harmonic distortion for multilevel inverters operating over a wide modulation range, IEEE Trans. Power Electronics, vol. 21, no. 4, pp. 941–949 (2006).
[10] Chen J., He Y., Hasan S.U., Liu J., A comprehensive study on equivalent modulation waveforms of the SVM sequence for three-level inverters, IEEE Trans. Power Electronics, vol. 30, no. 12, pp. 7149–7158 (2015).
[11] Choi U.M., Lee J.S., Lee K.B., New modulation strategy to balance the neutral-point voltage for threelevel neutral-clamped inverter systems, IEEE Trans. Energy Conversion, vol. 29, no. 1, pp. 91–100 (2014). 218 Junlong Fang et al. Arch. Elect. Eng.
[12] Choi U.M., Lee K.B., Blaabjerg F., Method to minimize the low frequency neutral-point voltage oscillations with time-offset injection for neutral-point-clamped inverters, IEEE Trans. Ind. Appl., vol. 51, no. 2, pp. 1678–1691 (2015).
[13] Busquets-Monge S., Bordonau J., Boroyevich D., Somavilla S., The nearest three virtual space vector PWM – A modulation for the comprehensive neutral-point balancing in the three-level NPC inverter, IEEE Power Electron. Lett., vol. 2, no. 1, pp. 11–15 (2004).
[14] Xiang C.Q., Shu C., Han D., Improved Virtual Space Vector Modulation for Three-Level Neutral- Point-Clamped Converter with Feedback of Neutral-Point Voltage, IEEE Trans. Power Electronics, vol. 33, no. 6, pp. 5452–5464 (2018).
[15] Mukherjee S., Giri S., Banerjee S., An Improved Adjustable Modulation Strategy for Three-Level NPC Inverters Considering Dynamic Loading Applications, IEEE Trans. Ind. Electronics, vol. 65, no. 10, pp. 3915–3925 (2018).
[16] Yonglong Zhang, Yuejun An, Guangyu Wang, Xiangling Kong, Multi motor neural PID relative coupling speed synchronous control, Archives of Electrical Engineering, vol. 69, no. 1, pp. 57–68 (2020).
[17] Peng S., Zhang G., Qin C., Zhou Z., Gu X., Xia C., MPTC of NP-clamped three-level inverter-fed permanent-magnet synchronous motor system for NP potential imbalance suppression, IET Electric Power Applications, vol. 14, no. 4, pp. 658–667 (2020).
[18] Qin C., Zhang C., Chen A., Xing X., A space vector modulation scheme of the quasi-Z-source threelevel T-type inverter for common-mode voltage reduction, vol. 65, iss. 10, pp. 8340–8350 (2018).
[19] Pham K., Nguyen N., A Reduced Common-Mode-Voltage Pulsewidth Modulation Method with Output Harmonic Distortion Minimization for Three-Level Neutral-Point-Clamped Inverters, IEEE Trans. Ind. Electronics, vol. 35, no. 7, pp. 6944–6962 (2020).
[20] Xu X., Zheng Z., Wang K., Yang B., Li Y., A Comprehensive Study of Common Mode Voltage Reduction and Neutral Point Potential Balance for a Back-to-Back Three-Level NPC Converter, IEEE Trans. Power Electronics, vol. 35, no. 8, pp. 7910–7920 (2020).
[21] Jiang W., Wang P., Ma M., A Novel Virtual Space Vector Modulation with Reduced Common-Mode Voltage and Eliminated Neutral Point Voltage Oscillation for Neutral Point Clamped Three-Level Inverter, IEEE Trans. Ind. Electronics, vol. 67, no. 2, pp. 884–894 (2020).

[1] Karthik A., Loganathan U., A reduced component count five-level inverter topology for high reliability electric drives, IEEE Transactions on Power Electronics, vol. 35, no. 1, pp. 725–732 (2020).
[2] Jin H., Luo Y., Yan Y., Pan S., Improved carrier phase shift modulation and voltage equalization control strategy in modular multilevel converter, Archives of electrical engineering, vol. 68, no. 4, pp. 803–815 (2019).
[3] Majumder M.G., Yadav A.K., Gopakumar K., Raj R.K., Loganathan U., Franquelo L.G., A 5-level inverter scheme using single DC link with reduced number of floating capacitors and switches for open-end IM drives, IEEE Transactions on Industrial Electronics, vol. 67, no. 2, pp. 960–968 (2020).
[4] Lewicki A., Morawiec M., Structure and the space vector modulation for a medium-voltage powerelectronic- transformer based on two seven-level cascade H-bridge inverters, IET Electric Power Applications, vol. 13, no. 10, pp. 1514–1523 (2019).
[5] Li X., Xing X., Zhang C., Chen A., Qin C., Zhang G., Simultaneous common-mode resonance circulating current and leakage current suppression for transformerless three-level T-ype PV inverter system, IEEE Transactions on Industrial Electronics, vol. 66, no. 6, pp. 4457–4467 (2019).
[6] Qin S., Lei Y., Ye Z., Chou D., Pilawa-Podgurski R.C.N., A high-power-density power factor correction front end based on seven-level flying capacitor multilevel converter, IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 7, no. 3, pp. 1883–1898 (2019).
[7] Kim H., Kwon Y., Chee S., Sul S., Analysis and compensation of inverter nonlinearity for three-level T-type inverters, IEEE Transactions on Power Electronics, vol. 32, no. 6, pp. 4970–4980 (2017).
[8] Wang B., Li Z., Bai Z., Krein P.T., Ma H., A redundant unit to form T-type three-level inverters tolerant of IGBT open-circuit faults in multiple legs, IEEE Transactions on Power Electronics, vol. 35, no. 1, pp. 924–939 (2020).
[9] Wang B., Li Z., Bai Z., Krein P.T., Ma H., Real-time diagnosis of multiple transistor open-circuit faults in a T-type inverter based on finite-state machine model, CPSS Transactions on Power Electronics and Applications, vol. 5, no. 1, pp. 74–85 (2020).
[10] Choi U., Lee K., Blaabjerg F., Diagnosis and tolerant strategy of an open-switch fault for T-type three-level inverter systems, IEEE Transactions on Industry Applications, vol. 50, no. 1, pp. 495–508 (2014).
[11] He J., Demerdash N.A.O.,Weise N., Katebi R., A fast on-line diagnostic method for open-circuit switch faults in SiC-MOSFET-based T-type multilevel inverters, IEEE Transactions on Industry Applications, vol. 53, no. 3, pp. 2948–2958 (2017).
[12] Wang K., Tang Y., Zhang C., Open-circuit fault diagnosis and tolerance strategy applied to four-wire T-type converter systems, IEEE Transactions on Power Electronics, vol. 34, no. 6, pp. 5764–5778 (2019).
[13] Wang X., Wang Z., Xu Z., He J., Zhao W., Diagnosis and tolerance of common electrical faults in Ttype three-level inverters fed dual three-phase PMSM drives, IEEE Transactions on Power Electronics, vol. 35, no. 2, pp. 1753–1769 (2020).
[14] Schweizer M., Kolar J.W., Design and implementation of a highly efficient three-level T-type converter for low-voltage applications, IEEE Transactions on Power Electronics, vol. 28, no. 2, pp. 899–907 (2013). Vol. 70 (2021) Fault diagnosis of T-type three-level inverter 87
[15] Wang K., Tang Y., Zhang C., Open-circuit fault diagnosis and tolerance strategy applied to four-wire T-type converter systems, IEEE Transactions on Power Electronics, vol. 34, no. 6, pp. 5764–5778 (2019).
[16] Abadi M.B., Mendes A.M.S., Cruz S.M.Â., Method to diagnose open-circuit faults in active power switches and clamp-diodes of three-level neutral-point clamped inverters, IET Electric Power Applications, vol. 10, no. 7, pp. 623–632 (2016).
[17] Zhou D., Yang S., Tang Y., A voltage-based open-circuit fault detection and isolation approach for modular multilevel converters with model-predictive control, IEEE Transactions on Power Electronics, vol. 33, no. 11, pp. 9866–9874 (2018).
[18] Chen D., LiuY., Zhang S., Open-circuit fault diagnosis method for the T-type inverter based on analysis of the switched bridge voltage, IET Power Electronics, vol. 12, no. 2, pp. 295–302 (2019