Abstract: Multilevel converters are mostly used for high power applications because of their ability to operate at higher output voltages and produces lower levels of harmonic components in the switched output voltages. One of the major problems in electric power quality is the harmonic contents. There are several methods for indicating the quantity of harmonic contents. The most widely used measure is the total harmonic distortion (THD). As the number of levels increases the harmonic content will get reduced. SPWM technique is used to alleviate harmonic components of output voltage. Multilevel inverter can be realized by cascading H-Bridges. Cascaded or H-bridge multilevel inverter with separated DC sources is the most feasible topology to use as a power converter for medium and high power applications. A better application can be the speed control of induction motor. By frequency control method, i.e. by varying the duty cycle of the PWM pulses given to the mosfet, speed of the induction motor can be controlled.
Keywords: multilevel; harmonic; cascade; H-bridge; speed control; induction motor; frequency control.
Title: Speed Control of Induction Motor using Multilevel Inverter
Author: Arya Shibu, Haritha S, Renu Rajan
International Journal of Electrical and Electronics Research
ISSN 2348-6988 (online)
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