Harmonic analysis of multilevel multiphase Space Vector Pulse Width Modulator for over modulation region Priya B*, Selvi J. Arputha Vijaya** *Assistant Professor, EEE, Kings College of Engineering, Punalkulam, India, bpriyasivakumar@gmail.com **Professor, ECE, Kings College of Engineering, Punalkulam, India. vijayas_02@yahoo.co.in Online published on 18 February, 2020. Abstract In the recent years, the multilevel converter novelty has expanded due to the achievement of high power ratings. Also, multiphase converter allows more than three phases in drive applications. In this paper, the multilevel multiphase space vector pulse width modulator (MMSVPWM) for overmodulation region of operation is analyzed. The space vector pulse width modulation method achieves 90.7% linearity for the installed inverter capacity. Beyond this capacity, the inverter efficiency is achieved more that process is known as overmodulation. It is a imprecise method and requires two zonal functions depending on the modulation index (MI). The Speed Control Plan includes two areas reported as Zone-I & Zone-II, and ensures smooth operation of up to 100% of its estimated speed, and beyond that in the field mitigation area. Further then the MI (Modulation Index) of 0.9535, the zone-I function of the overmodulation region expanded. In Zone-II, six levels is attained. This interruption reduces the imprecise effect of decreasing bottom-line harmonics, thus improving the controllability of angular momentum. This helps to compensate for torque ripples and current in the motor. This acceptable function of the exponential value of zone-I and flat transition in zone-II and the simulation results is verified for six levels. For overmodulation process, the simulation result of multilevel multiphase space vector pulse width modulator (MMSVPWM) is also presented. Top Keywords Harmonic Analysis, Multilevel Multiphase, Overmodulation, Space Vector Modulation. Top |