Open AccessAn investigation of flux characteristic in direct torque control using sector rotation strategy
Author(s) -
Siti Azura Ahmad Tarusan,
Auzani Jidin,
Mohd Luqman Mohd Jamil,
Kasrul Abdul Karim
Publication year - 2021
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.v12.i4.pp1978-1986
Subject(s) - stator , voltage droop , control theory (sociology) , torque , matlab , direct torque control , flux (metallurgy) , computer science , rotation (mathematics) , voltage , engineering , physics , control (management) , materials science , mechanical engineering , electrical engineering , induction motor , voltage source , artificial intelligence , metallurgy , thermodynamics , operating system
Stator flux fails to regulate at low operating speed condition is a common drawback for the conventional DTC. It is due to the inevitable of voltage drop across the stator resistance that interrupts the controlling of stator flux in DTC. Hence, a fixed sector rotation strategy is one of the solutions to rectify the raised issue. The strategy is based on the decreasing stator flux droop, which is an easy technique to change the sector of flux locus at a specific angle. However, this strategy only focuses at low operating speed. Thus, the stator flux droop effect at the various speed needs to be analysed. In this paper, an investigation is conducted by using simulation (MATLAB/Simulink) and experimental setup (dSPACE board) where a good agreement has been achieved between the predicted and measured results. The analysis taking into account between the conventional method (without strategy) and the proposed method (with strategy). In conclusion, the influence of stator flux droop is inversely proportional to the operating speed.