Indian Journal of Science and Technology
Year: 2009, Volume: 2, Issue: 2, Pages: 67-69
G. Pandian and S. Rama Reddy
Electrical and Electronics Engineering Department, Sathyabama University, Chennai, India. Electrical and Electronics Engineering Department, Jerusalem College of Engineering, Chennai, India.
*Author for the correspondence:
Electrical and Electronics Engineering Department,
Sathyabama University, Chennai, India
E-mail: [email protected]
This paper presents the simulation of three phase nine level inverter fed induction motor drive. The poor quality of voltage and current of a conventional inverter fed induction machine is due to the presence of harmonics and hence there is significant level of energy losses. The nine level inverter is used to reduce the harmonics. The inverters with a large number of steps can generate high quality voltage waveforms. The nine levels can follow a voltage reference with accuracy and with the advantage that the generated voltage can be modulated in amplitude instead of pulse-width modulation. An active harmonic elimination method is applied to eliminate any number of specific higher order harmonics of multilevel converters with unequal dc voltages. The simulation of three phase nine level inverter fed induction motor model is done using Simulink.
Keywords: Induction motor, multilevel converter, PWM.
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