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The DC-link Voltage Balancing of the Three-Level T-type Inverter Using the Predictive Control
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 Title & Authors
The DC-link Voltage Balancing of the Three-Level T-type Inverter Using the Predictive Control
Kim, Tae-Hun; Lee, Woo-Cheol;
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This paper is a study on the neutral point voltage balancing of the three-phase 3-level T-type inverter using the predictive control techniques. Recently, multi-level inverter has been attracting attention as the advantages such as efficiency improving and harmonic reduction. Especially, the T-type inverter topology is advantageous in low DC-link voltage. However, in case of the prediction control, it takes a lot of time, because there exist 27 voltage vectors and it has to be calculated according to the respective voltage vectors. Therefore, in this paper, we propose a method to implement predictive control techniques while reducing the operation time. In order to reduce the operation time, the predictive control is implemented by using the minimum voltage vector except for the unnecessary voltage vector. The result of the implemented predictive control is added to the SPWM by using the offset voltage. It was verified through simulation and experimental results.
3-Level inverter;T-type inverter;Voltage balancing;Predictive control;
 Cited by
Seung-Min Shin, Jung-Hoon Ahn, Byoung-Kuk Lee, "Maximum Efficiency Operation of Three-Level T-type Inverter for Low-Voltage and Low-Power Home Appliances", J Electr Eng Technol, vol. 10, no. 2 pp. 586-594, 2015 crossref(new window)

Kwanghee Lee, "Comparative Analysis of Power Losses for 3-Level NPC Inverter and T-type Inverter Modules", Master's Thesis, Chungbuk University, 2015.

J. Rodriguez, S. Bernet, P. K. Steimer, and I. E. Lizama, "A Survey on Neutral-Point-Clamped Inverters," IEEE Trans. Ind. Electron., vol. 57, no. 7, pp. 2219-2230, Jul. 2009.

Dong-Hyun Kim, Dae-Wook Kang, Yo-Han Lee, Dong-seok Hyun, "The analysis and comparison of carrier-based PWM method for 3-level inverter", IEEE, vol.2 pp.1316-1321, Oct, 2000.

Dong-Hyun Kim, "A study on Carrier-based PWM Methods for 3-level inverters", Master's Thesis, Hanyang University, 2000.

C. Newton and M. Sumner, "Neutral point control for multi-level inverters: Theory, design and operational limitations," in Proc. Ind. Appl. Soc. (IAS), New Orleans, LA, Oct. 1997, vol. 2, pp. 1336-1343.

W. Song, X. Feng, K. M. Smedley, "A Carrier-Based PWM Strategy With the Offset Voltage Injection for Single-Phase Three-Level Neutral-Point-Clamped Conveters," IEEE Trans. Power Electron., Vol. 28, No. 3 pp. 1083-1095, Mar 2013.

Yoon Hyuk Ko, Kui-Jun Lee, Rae-Young Kim, Dong-Seok Hyun, "A simple space vector PWM scheme for netural point voltage balance of three-level neutral point clamped inverter" Master's Thesis, Hanyang University, 2014.