Affiliation:
1. Department of Electrical Engineering , The Charutar Vidya Mandal (CVM) University , Anand , Gujarat , India
Abstract
Abstract
The DTSTACOM is a power quality compensator that can be used in the distribution grid to compensate the demand of reactive power, which can be produced by different linear and non-linear loads. In this process, the control method of DSTATCOM is one of the key factors influencing the performance of DSTATCOM. This study aims to analyse the effect of two modulation schemes, Pulse Width Modulation (PWM) and Hysteresis Current Control (HCC), under several conditions. The proposed modelling approach and Synchronous Reference Frame (SRF) theory are used to verify reactive power compensation and total harmonic distortion (THD). Further, PWM and Hysteresis Current Control (HCC) with proportional-integral (PI) controller simulated in MATLAB for different cases, and percentage THD was calculated to prove the effectiveness of the proposed method for the control of reactive power and THD with grid-connected DSTATCOM. The results presented here justify that the HCC controller can be better than the PWM method to generate the PWM pulses for reduction of harmonics under various conditions of DTSTACOM to compensate the reactive power. Additionally, the simulation was performed to check the efficacy of the projected method to reduce THD by varying the current control band of HCC.
Reference24 articles.
1. Amoozegar, D. (2016). DSTATCOM Modelling for Voltage Stability with Fuzzy Logic PI Current Controller. International Journal of Electrical Power & Energy Systems, 76, pp. 129–135. doi: 10.1016/j.ijepes.2015.09.017.
2. Bollen, M. (1999). Understanding Power Quality Problems: Voltage Sags and Interruptions. New York: IEEE Press.
3. Chebabhi, M. (2016). Four leg D-STATCOM Based on Synchronous Reference Frame Theory with Enhanced Phase Locked Loop for Compensating a Four-Wire Distribution Network under Unbalanced PCC Voltages and loads. Journal of Power Technology, Vol.96 (1), pp.15–26.
4. Chothani, N., Joshi, M., Patel, D. and Raichura, M. (2021). Adaptive PID controller based static var compensation in EHV transmission line. In: IEEE International Conference on Communication information and Computing Technology (ICCICT), June 25–27, IEEE, India,2021.
5. Daniel, A. and Ramin, M. (2018). Hysteresis band current control applied to a five- level NPC type G converter. In: 13th IEEE International Conference on Industry Applications, IEEE, Brazil, pp. 17–23.