Protection and Control of Modern Power Systems

Table 3 Voltage vectors associated with switching states

From: Direct torque control of doubly fed induction motor using three-level NPC inverter

Vector voltage	Symbol
Zero vectors	V₀, V₇ and V₁₄
Large vectors	V₁₅, V₁₆, V₁₇, V₁₈, V₁₉ and V₂₀
Medium vectors	V₂₁, V₂₂, V₂₃, V₂₄, V₂₄, V₂₅ and V₂₆
Small vectors	V₁, V₂, V₃, V₄, V₅, V₆, V₈, V₉, V₁₀, V₁₁, V₁₂, V₁₃

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