Power Factor Correction of Three-Phase PWM AC Chopper Fed Induction Motor Drive System Using HBCC Technique
Abstract
In this paper, a new control strategy for an induction motor (IM) drive system fed from three- phase pulse width modulation (PWM) AC chopper is proposed. The main objective of the proposed control scheme is to achieve input power factor correction (PFC) of the IM drive system under different operating conditions. PFC is achieved by continuously forcing the actual three-phase supply currents with the corresponding reference currents, which are generated in phase with the supply voltages, using hysteresis band current control (HBCC) technique. The proposed control strategy has two loops; inner and outer loop. Output of the outer loop is the magnitude of the supply reference current resulting from either speed controller or startup controller, whereas output of the inner loop is PWM signals of the AC chopper. The proposed AC chopper features a smaller number of active semiconductor switches; four IGBTs, with only two PWM gate signals. As a result, the proposed system is simple, reliable, highly efficient and cost-effective. Mathematical analysis of the drive system is presented. Components of the input LC filter are designed using frequency response. The IM drive system is modeled using MATLAB/SIMULINK and a laboratory prototype was built and tested. Simulation and experimental results confirm validity and robustness of the proposed control strategy.
Full Text:
PDFCopyright (c) 2020 Edupedia Publications Pvt Ltd
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
All published Articles are Open Access at https://journals.pen2print.org/index.php/ijr/
Paper submission: ijr@pen2print.org