Achieving Zero Common Mode Voltage and Improved Linearity Relationship by a Novel Modulation Method
نویسندگان
چکیده
Abstract—This paper proposed a new modulation strategy to eliminate common mode voltages in multilevel inverters. In this scheme which is explained for a 5-level modular inverter, all voltage vectors with zero common mode voltages can be classified into four categories and each two adjacent categories composed a segment. Synthesized voltage vectors that are an approximation to the reference vector belong to the segment in which the reference vector lies. Dwell times of these voltage vectors, depend on the distance between reference vector and the voltage vectors. This scheme leads to a good linearity relationship and low total harmonic distortion.
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