Main Article Content

Abstract

 This paper presents a modified control algorithm for Space Vector Modulated (SVM) Z-Source inverters. In traditional control strategies, the Z-Source capacitor voltage is controlled by the shoot through duty ratio and the output voltage is controlled by the modulation index respectively. Proposed algorithm provides a modified voltage vector with single stage controller having one degree of freedom wherein traditional controllers have two degrees of freedom. Through this method of control, the full utilization of the dc link input voltage and keeping the lowest voltage stress across the switches with variable input voltage could be achieved. Further it offers ability of buck-boost operation, low distorted output waveforms, sustainability during voltage sags and reduced line harmonics. The SVM control algorithm presented in this paper is implemented through Matlab/Simulink tool and experimentally verified with Z-source inverter prototype in the laboratory.

 

Keywords

Z source inverter Space vector pulse width modulation (SVPWM) Switching stress

Article Details

How to Cite
Thangaprakash, S., & Krishnan, A. (2010). Modified Space Vector Modulated Z Source Inverter with Effective DC Boost and Lowest Switching Stress. The Journal of Engineering Research [TJER], 7(1), 70–77. https://doi.org/10.24200/tjer.vol7iss1pp70-77

References

  1. Bimal K. Bose, 2005, "Modern Power Electronics and AC Drives," Prentice Hall of India.
  2. Donald Grahame Holmes, 1996, "The Significance of Zero Space Vector Placement for Carrier based PWM Schemes," IEEE Transactions on Industry Applications, Vol. 32, No. 5, pp. 1122-1129.
  3. Dorin O Neacsu, 2006, "Power Switching Converters: Medium and High Power," Tayler and Francis Group, CRC Press, Boca Raton, FL. Fang Zheng Peng, 2003, "Z source Inverter," IEEE Trans. Ind.ustry Applications., Vol 39(2), pp. 504-510.
  4. Fang. Z., Peng, M., Shen, A., Joseph, L. M., Tolbert and D. J.Adams, 2004, "Maximum Constant Boost Control of the Z-Source Inverter," In proeedings. EEE IAS'04, pp. 142-147.
  5. Fang Zheng Peng, Xiamoing yuvan, Xupeng Fang and Zhaoiming Qian, 2005, "Z-Source Inverter for Motor Drives," IEEE Transactions on Power Electronics, Vol. 20(4), pp. 857-863.
  6. Holtz, J., 1992, "Pulse Width Modulation-a Survey," IEEE Transactions on Industrial Electronics, Vol. 39, pp. 410-420.
  7. Jin-Woo and Ali Keyhani, 2007, "Control of a Fuel Cell Based Z source Converter," IEEE Transactions on Energy Conversion, Vol. 22(2), pp. 467-476.
  8. Keliang Zhou and Danwei Wang, 2002, "Relationship between Space Vector Modulation and Three Phase Carrier based PWM: A Comprehensive Analysis," IEEE Transactions on Industrial Electronics, Vol. 49(1), pp. 186-196.
  9. Poh Chiang Loh, Mahintha Vilathgamuwa, Yue sen Lai, Geok Tin Chua and Yun Wei Li, 2005, "Pulse Width Modulation of Z-Source Inverters," IEEE Transactions on Power Electronics, Vol 20(6), pp. 1346-1355.
  10. Quang-Vinh Tran, Tae-Won Chun, Jung-Ryol Ahn and Hong-Hee Lee, 2007, "Algorithms for Controlling Both the DC Boost and AC Output Voltage of ZSource Inverter," IEEE Transactions on Industrial Electronics, Vol. 54(5), pp. 2745-2750.
  11. Shen, M. and F. Z. Peng, 2008, "Operation Modes and Characteristics of the Z-Source Inverter with Small Inductance or Low Power Factor," IEEE Transactions on Industrial Electronics, Vol. 55(1), pp. 89-96.
  12. Sidney R. Bowes and Yen-Shin Lai, 1997, "The Relationship Between Space Vector Modulation and Regular Sampled PWM," IEEE Transactions on Industrial Electronics, Vol. 44(5), pp. 670-679.