S.Logeshwaran 1, G.Soundra Devi 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 space vector modulation based
H-Bridge multilevel inverter which employs single dc input power source with
isolated unequal turns ratio low-frequency power transformer. In this proposed
topology three H-Bridges are used, hence 27 levels are achieved with single DC
input and multi winding transformer unit. Hence harmonics are reduced in the
output level therefore an economical and efficient inverter can be designed. In
this proposed topology trinary switching scheme is used to achieve the desired
levels. In conventional method switching angle calculation time of cascaded
H-Bridge multilevel inverter is more. In order to reduce switching angle
calculation time, this paper proposes Real time operating system (RTOS) based
cascaded H-Bridge multilevel inverter. More over this converter has a better
control capability when compared to the conventional method. Closed loop
control of Induction motor is also performed by using this inverter. The
performance of the Induction motor is done through simulation using
MATLAB/Simulink.
