Harmonic Frequency Spectrum Customization …onlinepresent.org/proceedings/vol138_2016/43.pdfHarmonic Frequency Spectrum Customization Method to Random Space ... T.A.: Pulse width
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Harmonic Frequency Spectrum Customization Method
to Random Space Vector Pulse Width Modulation
Guoqiang Chen and Jianli Kang
School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo,
Abstract. The spectrum of the random space vector pulse width modulation
(SVPWM) strategy is extremely complicated due to the random variable. An
algorithm is proposed to optimize and customize the frequency spectrum. The
theoretical spectrum computation method is given firstly. In addition, the key procedure of the proposed algorithm is presented. Finally, several computation
examples verify its convenience and feasibility.
Keywords: Space vector pulse width modulation, Monte Carlo, maximum
harmonic amplitude, random variable
1 Introduction
The undesirable harmonic inevitably results from the space vector pulse width
modulation (SVPWM) strategy in the practical application [1,2], which causes many
problems [3-11]. The deterministic SVPWM strategy presents cluster harmonics with
large amplitudes, which makes the case more serious. Therefore, the random SVPWM
strategy has been studied to suppress the large amplitude harmonics [4,5,7, 9,12]. The
spectrum characteristic of the random SVPWM strategy is extremely complicated due
to the random variable , so it is difficu lt to accurately predict the maximum amplitude
that is a key index to assess the performance of the modulation strategy . In this paper,
an algorithm based on the Monte Carlo method is proposed to optimize and customize
the frequency spectrum of the random SVPWM strategy. Furthermore the maximum
amplitude can be customized. The key steps are presented. Finally, the proposed
algorithm is verified through several examples.
2 Random SVPWM Technology
The 8 basic space vectors are shown in Fig .1 (a) fo r the classic two -level
inverter. For an arb it rary vo ltage vector, fo r exa mple sU res id ing in the first
sextan t, the on-state durat ion t ime 1T , 2T and 0T are determined by the
ident ical vo lt -second balance in the s witch ing period sT .The commonly used 7-
Advanced Science and Technology Letters Vol.138 (ISI 2016), pp.215-219
Acknowledgments. This work is supported by National Science Foundation of China
(No. U1304525). The author would like to thank the anonymous reviewers for their
valuable work.
References
1. Xiaolin, M., Kumar, J.A., Rajapandian, A.: Hybrid interleaved space vector PWM for
ripple reduction in modular converters. IEEE Transactions on Power Electronics. 261,954-
1967 (2011)
2. Holmes, D.G., Lipo, T.A.: Pulse width modulation for power converters: principles and
practice. IEEE Press, USA (2003) 3. Rahiman, B.A., Saikrishna, K., Khalifa, A.H., Apparao, D.: Space-vector-based
synchronized three-level discontinuous PWM for medium-voltage high-power VSI. IEEE
Transactions on Industrial Electronics. 61, 3891-3901(2014)
4. Shahriyar, K., Javad, M., Ali, A.: Application of random PWM technique for reducing the
conducted electromagnetic emissions in active filters. IEEE Transactions on Industrial Electronics. 54, 2333~2343(2007)
5. Na, S. H., Jung, Y. G., Lim, Y. C., Yang, S.H.: Reduction of audible switching noise in
induction motor drives using random position space vector PWM. IEE Proceedings
Electric Power Applications, 149. 195~200 (2002)
6. Jiang, D., Wang, F.F.: Variable Switching Frequency PWM for Three-Phase Converters Based on Current Ripple Prediction. IEEE Transactions on Power Electronics. 28, 4951-
4961(2013)
7. Chen, G., Wu, Z., Zhu, Y.: Harmonic Analysis of random pulse position space vector
PWM. Journal of Tongji University. 40, 1111-1117(2012) 8. Wu, Z., Chen, G., Zhu, Y., Tian, G.: Harmonic analysis of random zero-vector distribution
space vector pulse-width modulation. Journal of Tongji University39, 901-907(2011)
9. Chen, G., Zhang, M., Zhao, J.: Harmonic distortion factor of a hybrid space vector PWM
based on random zero-vector distribution and random pulse position. Advances in
Information Sciences and Service Sciences.4, 242-250(2012) 10. Albatran, S., Yong, F., Albanna, A.: Comprehensive mathematical description and
harmonic analysis of hybrid two-dimensional-three-dimensional space vector modulation.
IEEE Transactions on Industrial Electronics. 61, 3327-3336(2014)
11. Holtz, J., Holtgen, M., Krah, J.O.: A Space Vector Modulator for the High-Switching
Frequency Control of Three-Level SiC Inverters. IEEE Transactions on Power Electronics. 29, 2618-2626(2014)
12. Chen, G., Kang, J.,: Harmonic analysis of a random zero vector distribution space vector
pulse width Modulation. International Journal of Signal Processing, Image Processing and
Pattern Recognition. 6, 227-240(2016)
Advanced Science and Technology Letters Vol.138 (ISI 2016)