Author : Pranita Rajkuwar 1
Date of Publication :7th June 2017
Abstract: This paper proposes the simplified pulse width modulation ( PWM ) strategy in the bidirectional ac/dc single-phase converter with the feed-forward control scheme. In this, the number of switching of the proposed simplified PWM strategy is reduced to one-fourth to that of the unipolar & bipolar PWM. The feed-forward control scheme is used to achieve better performance of the ac/dc converter in both the rectifier & inverter mode as compared with the conventional dual-loop control scheme. The simplified PWM strategy with feed-forward control scheme has higher efficiency than that of the unipolar PWM & bipolar PWM strategies. Also, the total harmonic distortion is less in this PWM strategy. The simulation & experiments are carried out to verify the validity of the proposed PWM strategy & control scheme.
- ]L. R. Limongi, D. Roiu, and A. Tenconi, ―Enhanced power quality control strategy for single-phase inverters in distributed generation systems,‖ IEEE Trans. Power Electron., vol. 26, no. 3, pp. 798–806, Mar. 2011.
- W. Wu, Y. He, and F. Blaabjerg, ―An LLCL power filter for single-phasegrid-tied inverter,‖ IEEE Trans. Power Electron., vol. 27, no. 2, pp. 782-789, Feb. 2012.
- R. Wang, F. Wang, D. Boroyevich, R. Burgos, R. Lai, P. Ning, and K. Rajashekara, ―A high power density single-phase PWM rectifier with active ripple energy storage,‖ IEEE Trans. Power Electron., vol. 26, no. 5,pp. 1430–1443, May 2011.
- H. Mao, X. Yang, Z. Chen, and Z. Wang, ―A hysteresis current controllerfor single-phase three-level voltage source inverters,‖ IEEE Trans. PowerElectron., vol. 27, no. 7, pp. 3330–3339, Jul. 2012.
- S.-H. Hwang, L. Liu,H. Li, and J.-M. Kim, ―DC offset error Compensation for synchronous reference frame PLL in single-phase grid Connected converters,‖ IEEE Trans. Power Electron., vol. 27, no. 8, pp. z 3467– 3471, Aug. 2012.
- S. Golestan, M. Monfared, F. D. Freijedo, and J. M. Guerrero, ―DesignzS. Golestan, M. Monfared, F. D. Freijedo, and J. M. Guerrero, ―Design and tuning of amodified power-based PLL for single-phase gridconnected power conditioning systems,‖ IEEE Trans. Power Electron., vol. 27, no. 8, pp. 3639–3650, Aug. 2012.