Title: Carrier shifting algorithm creating virtual frequency upsurge to reduce switching losses in multi-inverter fed induction motor drives
Authors: Ranvir Kaur; Gursewak Singh Brar
Addresses: IKG Punjab Technical University, Kapurthala-144603, Punjab, India ' Electrical Engineering Department, Baba Banda Singh Bahadur Engineering College, Fatehgarh Sahib-140407, Punjab, India
Abstract: Power electronics applications delve the induction motor drives posing a challenge for researchers to minimise the harmonic content thereby improving the power quality. In this paper, three level voltages are generated by cascading dual two-level voltage source inverters (VSI) with phase shift in their carrier waves. Phase shifted dual two-level inverter is used for total harmonic distortion (THD) reduction and shifting of side band harmonics. Multi inverters, they can be used for high mega volt-ampere ratings. The proposed dual inverter circuit arrangement is tested for 5-hp induction motor. The prototype is designed in MATLAB/simulink and is experimentally verified with TMS320F28377 DSP platform for wide range of speed control of induction motor.
Keywords: sinusoidal pulse width modulation; total harmonic distortion; THD; side band harmonics; three level voltage source inverter; phase shifting carriers; high switching frequency; multi inverters; induction motor drives.
International Journal of Energy Technology and Policy, 2019 Vol.15 No.2/3, pp.116 - 133
Received: 18 Aug 2017
Accepted: 20 Dec 2017
Published online: 04 Mar 2019 *