Implementation of Pulse Width Modulation Technique for Achieving Increased Voltage Gain and Balanced Voltage Stress in the A-Source Inverter
Subject Areas : electrical and computer engineering
F. Zohrabi
1
,
E. Abiri
2
,
A. Rajaei
3
1 -
2 -
3 -
Keywords: Third harmonic injectionboosting factormodulation indeximpedance source inverter,
Abstract :
The Z-source converter was first introduced as a buck-boost dc-ac single-stage inverter in 2003. Different structures of impedance source inverters have been introduced for improving the performance of power inverters. Due to their specific structure, these inverters use shoot-through state in order to increase the output voltage. Therefore, in addition to improving the reliability of systems, they create a single-stage dc-ac inverter capable of reducing and increasing voltage at the same time. Recently, a three-winding network called the A-source network has been introduced. A new Pulse Width Modulation method has been proposed to improve the voltage gain and reduce switching losses. In this new method, duty cycle of the switch is controlled using the third harmonic injection and the new reference voltages in the three-phase A-source inverter. The proposed modulation method reduces the switching losses and increases voltage gain without adding any additional hardware to the inverter structure. In this method, the buck-boost single-stage structure of the inverter is maintained. In this paper, the proposed method is partially analyzed and compared to the conventional Pulse Width Modulation methods. In this method, the third harmonic injection is used to increase the modulation index to 1.15 and thereby reduce the switching losses. The simulation of the proposed and conventional methods and analyzes, demonstrated the ability of the proposed system.
[1] F. Z. Peng, "Z-source inverter," IEEE Trans. Ind. Appl., vol. 39, no. 2, pp. 504-510, Mar./Apr. 2003.
[2] P. C. Loh, D. M. Vilathgamuwa, C. J. Gajanayake, Y. R. Lim, and C. W. Teo, "Transient modeling and analysis of pulse-width modulated Z-source inverter," IEEE Trans. Power Electron., vol. 22, no. 2, pp. 498-507, Mar. 2007.
[3] M. Calais, J. Myrzik, T. Spooner, and V. G. Agelidis, "Inverters for single-phase grid connected photovoltaic systems: an overview," in Proc. IEEE 33rd Annu. Power Electron. Specialists Conf., vol. 4, pp. 1995-2000, Cairns, Australia, 23-27 Jun. 2002.
[4] M. K. Mishra and K. Karthikeyan, "An investigation on design and switching dynamics of a voltage source inverter to compensate unbalanced and nonlinear loads," IEEE Trans. Ind. Electron., vol. 56, no. 8, pp. 2802-2810, Aug. 2009.
[5] F. Z. Peng, M. Shen, and Z. Qian, "Maximum boost control of the Z-source inverter," IEEE Trans. Power Electron., vol. 20, no. 4, pp. 833-838, Jul. 2005.
[6] M. Shen, J. Wang, A. Joseph, F. Z. Peng, L. M. Tolbert, and D. J. Adams, "Constant boost control of the Z-source inverter to minimize current ripple and voltage stress," IEEE Trans. Ind. Appl., vol. 42, no. 3, pp. 770-778, May/Jun. 2006.
[7] O. Ellabban, J. Van Mierlo, and P. Lataire, "Comparison between different PWM control methods for different Z-source inverter topologies," in Proc. 13th Eur. Conf. Power Electron. Appl., EPE'09, 11 pp., Barcelona, Spain, 8-10 Sept. 2009.
[8] M. S. Bakar, N. Rahim, K. H. Ghazali, and A. H. M. Hanafi, "Z-source inverter pulse width modulation: a survey," in Proc. IEEE Int. Conf. Elect., Control, Comput. Eng., Pahang, Malaysia, pp. 313-316, Pahang, Malaysia, 21-22 Jun. 2011.
[9] I. Roasto, D. Vinnikov, J. Zakis, and O. Husev, "New shoot-through control methods for qZSI-based DC/DC converters," IEEE Trans. Ind. Informat., vol. 9, no. 2, pp. 640-647, May 2013.
[10] M. K. Nguyen, Y. G. Jung, and Y. C. Lim, "Single-phase AC-AC converter based on quasi-Z-source topology," IEEE Trans. Power Electron., vol. 25, no. 8, pp. 2200-2210, Aug. 2010.
[11] W. Qian, F. Z. Peng, and H. Cha, "Trans-Z-source inverters," IEEE Trans. Power Electron., vol. 26, no. 12, pp. 3453-3463, Dec. 2011.
[12] M. K. Nguyen, Y. C. Lim, and S. J. Park, "Improved trans-Z-source inverter with continuous input current and boost inversion capability," IEEE Trans. Power Electron., vol. 28, no. 10, pp. 4500-4510, Oct. 2013.
[13] C. J. Gajanayake, F. L. Luo, H. B. Gooi, P. L. So, and L. K. Siow, "Extended-boost Z-source inverters," IEEE Trans. Power Electron., vol. 25, no. 10, pp. 2642-2652, Oct. 2010.
[14] S. Thangaprakash and A. Krishnan, "Comparative evaluation of modified pulse width modulation schemes of Z-source inverter for various applications and demands," Int. J. Eng., Sci., Technol., vol. 2, no. 1, pp. 103-115, 2010.
[15] Y. P. Siwakoti, "Impedance-source networks for electric power conversion part i: a topological review," IEEE Trans. on Power Electronics, vol. 30, no. 2, pp. 699-716, Feb. 2015.
[16] F. Z. Peng and F. Blaabjerg, "Impedance-source networks for electric power conversion part ii: review of control and modulation techniques," IEEE Trans. on Power Electronics, vol. 30, no. 4, pp. 1887-1906, Apr. 2015.
[17] Y. P. Siwakoti and F. Blaabjerg, "A-source impedance network," IEEE Trans. on Power Electronics, vol. 31, no. 12, pp. 8081-8087, Dec. 2016.
[18] V. G. Agelidis, P. D. Ziogas, and G. Joos, "Dead-band' PWM switching patterns," IEEE Trans. on Power Electronics, vol. 11, no. 4, pp. 522-531, Jul. 1996.
[19] V. Blasko, "A hybrid PWM strategy combining modified space vector and triangle comparison methods," in Proc. 27th Annu. IEEE Power Electron. Specialists Conf., PESC'96, vol. 2, pp. 1872-1878, Baveno, Italy, 23-27 Jun. 1996.
[20] M. S. Diab and A. A. Elserougi, "A pulsewidth modulation technique for high-voltage gain operation of three-phase Z-source inverters," IEEE Trans. on Power Electronics, vol. 4, no. 2, pp. 521-533, Jun. 2016.
