Abstract
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.
Highlights
Power Electronics is playing an important role in the modern static converters such as machine drives, power torque and speed control of motor drive
Do not produce perfect waveforms, AC induction motor drives are replacing the conventional which strongly depend on the semiconductors switching
It is well known that distorted machines are single excited, voltages and currents waveforms mechanically rugged and robust, but produce harmonic contamination, speed and torque control of these additional power losses, and high machines are more complex and frequency noise that can affect not involved, compared to DC
Summary
Simulation and analysis of multilevel inverter fed induction motor drive G. Electrical and Electronics Engineering Department, Jerusalem College of Engineering, Chennai, India
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