Carrier Based Single-State PWM Technique for Minimizing Vector Errors in Multilevel Inverters

Nguyen Van Nho; Quach Thanh Hai; Hong-Hee Lee

Carrier Based Single-State PWM Technique for Minimizing Vector Errors in Multilevel Inverters

Nguyen Van Nho

Quach Thanh Hai

Hong-Hee Lee

Vol. 10, No. 4, pp. 357-364, Jul. 2010

10.6113/JPE.2010.10.4.357

Minimized voltage error

Multilevel inverter

PWM technique

Single-switching state

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Abstract

In this paper, a novel analysis of a carrier based PWM method for multilevel inverters is presented. The space vector PWM and carrier based PWM correlations in multilevel inverters are investigated in a nominal two-level switching diagram. The obtained results can be applied to design various carrier PWM techniques. In this paper, a carrier based single-state PWM technique, which reduces the switching number and optimizes the active voltage errors, is presented. This PWM technique can be advantageous if there are a large number of levels. The proposed method is mathematically formulated and demonstrated by simulations and experimental results.

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Cite this article

[IEEE Style]

N. V. Nho, Q. T. Hai, H. Lee, "Carrier Based Single-State PWM Technique for Minimizing Vector Errors in Multilevel Inverters," Journal of Power Electronics, vol. 10, no. 4, pp. 357-364, 2010. DOI: 10.6113/JPE.2010.10.4.357.

[ACM Style]

Nguyen Van Nho, Quach Thanh Hai, and Hong-Hee Lee. 2010. Carrier Based Single-State PWM Technique for Minimizing Vector Errors in Multilevel Inverters. Journal of Power Electronics, 10, 4, (2010), 357-364. DOI: 10.6113/JPE.2010.10.4.357.