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Volume 35 Issue 12
Dec.  2009
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Journal of Beijing University of Aeronautics and Astronautics  > 2009  >  35(12): 1477-1482.
Zhang Jin, Qi Bojin, Zhang Shaoru, et al. Analysis and accurate compensation of dead-time for three-phase DC/AC inverter[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(12): 1477-1482. (in Chinese)
Citation: Zhang Jin, Qi Bojin, Zhang Shaoru, et al. Analysis and accurate compensation of dead-time for three-phase DC/AC inverter[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(12): 1477-1482. (in Chinese)
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Analysis and accurate compensation of dead-time for three-phase DC/AC inverter

  • 1.

    School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • 2. College of Physics and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China

  • 3. College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, China

  • Received Date: 17 Feb 2009
  • Publish Date: 31 Dec 2009
    Abstract
  • A novel approach to compensate the dead-time effect based on the existing no-dead-time technique was presented. The reason of the inverter output voltage distortion was analyzed with the consideration of the dead-time and the non-ideal characteristics of the switching devices. The proposed method was implemented by adjusting the pulse width of the original driving signals to compensate the switching delay and voltage drop effect of the power devices, thus the effects were prevented from propagating into the ac-side. An improved current polarity detecting circuit with high precision was introduced to overcome the difficulties in current polarity detecting around the zero current crossing point. A more accurate output voltage synthesis was obtained with simple logic and flexible implementation, by applying this compensation strategy to a general purpose inverter system. Experimental results verify the effectiveness of the proposed method.

     

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  • [1] Choi J W, Sul S K. A new compensation strategy reducing voltage/current distortion in PWM VSI systems operating with low output voltages[J]. IEEE Transactions on Industrial Applications,1995,31(5):1001-1008 [2] Chen L H, Peng F Z. Dead-time elimination for voltage source inverters[J]. IEEE Transactions on Power Electronics,2008,23(2):574-580 [3] Jeong S G, Park M H. The analysis and compensation of dead-time effects in PWM inverters[J]. IEEE Transactions on Industrial Electronics,1991,38(2):108-114 [4] Munoz A R, Lipo T A. On-line dead-time compensation technique for open-loop PWM-VSI drives[J]. IEEE Transactions on Power Electronics,1999,14(4):683-689 [5] Murai Y,Watanabe T, Iwasaki H. Waveform distortion and correction circuit for PWM inverters with switching lag-times[J]. IEEE Transactions on Industrial Applications,1987,23(5):881-886 [6] Leggate D, Kerkman R J. Pulse-based dead-time compensator for PWM voltage inverters[J]. IEEE Transactions on Industrial Electronics,1997,44(2):191-197 [7] Choi J W, Sul S K. Inverter output voltage synthesis using novel dead time compensation[J]. IEEE Transactions on Power Electronics,1996,11(2):221-227 [8] Blaabjerg F, Pedersen J K, Thoegersen P. Improved modulation techniques for PWM-VSI drives[J]. IEEE Transactions on Industrial Electronics,1997,44(1):87-95 [9] Lin J L. A new approach of dead-time compensation for PWM voltage inverters[J]. IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications,2002,49(4):476-483 [10] Zhao H B, Wu Q M J, Kawamura A. An accurate approach of nonlinearity compensation for VSI inverter output voltage[J]. IEEE Transactions on Power Electronics,2004,19(4):1029-1035
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