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Title: A space vector PWM scheme for multilevel inverters based on two-level space vector PWM
Authors: Gupta, A.K.
Khambadkone, A.M. 
Keywords: Multilevel inverter
Neutral point clamped (NPC)
Space vector pulsewidth modulation (SVPWM)
Switching state
Two-level inverter
Issue Date: Oct-2006
Citation: Gupta, A.K., Khambadkone, A.M. (2006-10). A space vector PWM scheme for multilevel inverters based on two-level space vector PWM. IEEE Transactions on Industrial Electronics 53 (5) : 1631-1639. ScholarBank@NUS Repository.
Abstract: Multilevel inverters are increasingly being used in high-power medium voltage applications due to their superior performance compared to two-level inverters. Among various modulation techniques for a multilevel inverter, the space vector pulsewidth modulation (SVPWM) is widely used. However, the implementation of the SVPWM for a multilevel inverter is complicated. The complexity is due to the difficulty in determining the location of the reference vector, the calculation of on-times, and the determination and selection of switching states. This paper proposes a general SVPWM algorithm for multilevel inverters based on standard two-level SVPWM. Since the proposed multilevel SVPWM method uses two-level modulation to calculate the on-times, the computation of on-times for an n-level inverter becomes easier. The proposed method uses a simple mapping to achieve the SVPWM for a multilevel inverter. A general n-level implementation is explained, and experimental results are given for three-level and five-level inverters. © 2006 IEEE.
Source Title: IEEE Transactions on Industrial Electronics
ISSN: 02780046
DOI: 10.1109/TIE.2006.881989
Appears in Collections:Staff Publications

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