Selective Harmonic Elimination with Reduced Switch Topology in Multilevel Inverter
نویسندگان
چکیده
A generalized formulation of Selective Harmonic Elimination (SHE) PWM for Multilevel Inverter is recently formulated in literature which can eliminate a large number of lower order harmonics. Various methods for calculating the firing angles for SHE PWM are known and still research in this area is ongoing. This paper presents a MATLAB based approach for modeling and simulation method suitable for studying SHE methods using Newton Raphson Method with reduced switch topology to apply them in various applications. In this paper a cascaded 3-Phase, 7Level, H-bridge Multilevel Inverter with reduced switch topology using MATLAB/Simulinkc blocks is presented as a systematic approach. The primary contribution of this paper is that the Simulink model developed can also be extended for higher level inverter applications also. The proposed Model can generate stepped voltage waveform and can be programmed for a wide range of modulation indices.
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