G.Shyama1, Rahila 2, M.Santhi 3
1PG student- Department of EEE – Sethu Institute of
Technology, Kariapatti, Tamilnadu, India.
2Professor - Department of EEE – Sethu Institute of
Technology, Kariapatti, Tamilnadu, India.
3 Associate Professor - Department of EEE – Sethu
Institute of Technology, Kariapatti, Tamilnadu, India.
This paper proposes a
Series Connected Transistor Clamped 49-level multilevel inverter for driving an
Induction motor. The Transistor clamped circuit is to reduced the number of
components in the circuit. A 49-level can be synthesized with the fewest
components. Particularly, a 49-level inverter is an optimization in the number
of levels for a given number of power transistors in power converters. The main
disadvantage of the conventional topology is the large number of power supplies
and semiconductors required to obtain these multistep voltage waveforms. The
proposed topology significantly reduces the number of IGBTs and their gate
driver circuits as the number of output voltage levels increase. The proposed
inverter can synthesize high quality output voltage near to sinusoidal waves.
The circuit configuration is simple and easy to control. The operational
principle and key waveforms are illustrated and analyzed. To validate the
proposed topology, the circuit is simulated and verified for constant frequency
and constant voltage operation using MATLAB SIMULINK. The results shown that
with the proposed technique, THD is reduced significantly by increasing the
number of levels.
