Open AccessEnhanced DTC induction motor drives for THD minimization performance improvement with multilevel inverter
Author(s) -
Siong Kai Chien,
Sy Yi Sim,
Wahyu Mulyo Utomo,
Sie Long Kek,
Farahiyah Mustafa,
Nor Aira Zambri,
Alvin John Lim Meng Siang,
Gia Yi Sim
Publication year - 2022
Publication title -
international journal of power electronics and drive systems/international journal of electrical and computer engineering
Language(s) - English
Resource type - Journals
eISSN - 2722-2578
pISSN - 2722-256X
DOI - 10.11591/ijpeds.v13.i1.pp93-101
Subject(s) - total harmonic distortion , induction motor , control theory (sociology) , inverter , direct torque control , torque , computer science , motor drive , voltage , matlab , minification , engineering , control (management) , electrical engineering , physics , mechanical engineering , artificial intelligence , thermodynamics , programming language , operating system
Direct torque control (DTC) is a method applied in induction motor (IM) drives to control the speed and torque of IM accurately and independently without feedback signal. However, in fast fourier transform (FFT) analysis, the total harmonic distortion (THD) of the IM drives is high in DTC method with conventional inverter (CI). Therefore, the purpose of this study is to minimize the THD without affecting the drive’s performance. A DTC IM drive with multilevel inverter (MLI) is proposed in this study to reduce THD and preserve good speed and torque response of IM simultaneously. DTC IM drive with proposed MLI based THD minimization has several advantages over the DTC IM drive with CI, including higher generated output voltage with low distortion, operate under low switching frequency, and work with renewable energy. In order to prove the effectiveness of the proposed MLI based THD minimization in DTC IM drive, MATLAB Simulink is used to investigate the response of the IM drive and THD under different operating condition. From this study, proposed MLI based THD minimization DTC IM drive is able to reduce THD with a maximum of 13% in low speed operation as compared to DTC IM drive with CI.