A Generic Multi-Level SVM Scheme Based on Two-Level SVM for n -Level Converters

Chen Wei, Xibo Yuan, Yonglei Zhang and Xiaojie Wu
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Chen Wei: School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China
Xibo Yuan: School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China
Yonglei Zhang: School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China
Xiaojie Wu: School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China

Energies, 2020, vol. 13, issue 9, 1-18

Abstract: Multi-level converters are widely used in various industrial applications. Among various space vector modulation (SVM) schemes, the multi-level SVM scheme based on two-level space vector pulse width modulation (SVPWM) is recognised as a simplified multi-level SVM scheme, which can reduce the computation complexity. However, this scheme is still complicated when the number of the voltage levels is large. This paper proposes a modified SVM scheme that can further simplify the multi-level SVM scheme based on two-level SVPWM. The proposed SVM scheme can directly determine the two-level hexagon where the reference voltage vector is located by calculating a simple formula. The whole modulation process can be completed by only three steps. Meanwhile, the proposed method is generic for any n -level converter without adding much calculation, which greatly simplifies the modulation process. Experimental results have been provided, which verify the effectiveness and generality of the proposed SVM scheme for two types of multi-level converters.

Keywords: generalized zero vector; multi-level converter; space vector modulation; two-level hexagon (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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