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K. S. Ahn, N. S. Choi, E. C. Lee and H. J. Kim, "A study on a carrier based PWM having constant common mode voltage and minimized switching frequency in three-level inverter," Journal of Electrical Engineering & Technology, Vol. 11, No. 2, pp. 393-404, Mar. 2016.
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Nho-Van Nguyen and Mon-Van Doi, "Carrier based PWM control of 3-level NPC inverter with DC neutral point balancing and common mode voltage reduction," in 10th International Conference on Power Electronics-ECCE Asia, pp. 1213-1220, May. 2019.
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N. S. Choi and E. C. Lee, "Simple implementation of space vector PWM using barycentric coordinates," in Korea Institute of Power Electronics 2015 Summer Conference, pp. 45-46, Jul. 2015.
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U. M. Choi, J. S. Lee and K. B. Lee, "New modulation strategy to balance the neutral-point voltage for three-level neutral-clamped inverter systems," IEEE Trans. on Energy Conversion, Vol. 29, No. 1, pp. 91-100, Mar. 2014.
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J. S. Lee and K. B. Lee, "New modulation techniques for a leakage current reduction and a neutral-point voltage balance in transformerless photovoltaic systems using a three-level inverter," IEEE Trans. on Power Electronics, Vol. 29. No. 14, pp. 1720-1732, Apr. 2014.
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E. C. Lee, N. S. Choi and K. S. Ah, "Overmodulation characteristics of carrier based MVPWM for eliminating the leakage currents in three-level inverter," The Transactions of the Korean Institute of Power Electronics, Vol. 20, No. 6, pp. 509-516, Dec. 2015.
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E. C. Lee, N. S. Choi and H. J. Kim, "Space vector PWM method for leakage current reduction and NP current control in 3-phase 3-level converter used in bipolar DC distribution system," The Transactions of the Korean Institute of Power Electronics, Vol. 23, No. 5, pp. 336-344, Oct. 2018.
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Tianbao Yu, Wenchao Wan and Shanxu Duan, "A modulation method to eliminate leakage current and balance neutral-point voltage for three-level inverters in photovoltaic systems," IEEE Trans. on Industrial Electronics (Early Access), DOI 10.1109/TIE.2022.3161809, 2022.
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N. S. Choi, E. C. Lee and K. S. Ahn, "A carrier-based meduim vector PWM strategy for three level inverters in transformerless photovoltaic systems," in 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia), pp. 2752-2757, Jun. 2015.
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