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A new switching scheme for Z-source inverter to minimize ripples in the Z-source elements

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Abstract

This paper presents a modification in pulse width modulation (PWM) scheme with unequal shoot-through distribution for the Z-source inverter (ZSI) which can minimize ripples in the current through the Z-source inductors as well as the voltage across the Z-source capacitors. For the same system parameters, the proposed control technique provides better voltage boost across the Z-source capacitor, DC-link, and also the AC output voltage than the traditional PWM. The ripples in the Z-network elements are found to be reduced by 75% in the proposed modulation scheme with optimum harmonic profile in the AC output. Since the Z-network requirement will be based on the ripple profile of the elements, the Z-network requirements can be greatly reduced. The effectiveness of the proposed modulation scheme has been simulated in Matlab/Simulink software and the results are validated by the experiment in the laboratory.

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Authors and Affiliations

  1. School of Electrical Systems Engineering, University Malaysia Perlis, Perlis, 02000, Malaysia

    Sengodan Thangaprakash

  2. K.S.R. College of Engineering, Tamilnadu, 637215, India

    Ammasai Krishnan

Authors
  1. Sengodan Thangaprakash
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  2. Ammasai Krishnan
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Corresponding author

Correspondence to Sengodan Thangaprakash.

Additional information

Sengodan Thangaprakash received his B.Eng. degree in electrical and electronics engineering and his M.Eng. degree in power electronics and drives from Bharathiar University and Anna University Chennai, Tamilnadu, India in 2002 and 2004, respectively. He then received his Ph.D. degree in electrical engineering from Anna University Chennai, India in 2011. From 2004 to mid-2011, he was working with the KSR College of Engineering and the Sri Shakthi Institute of Engineering and Technology, Tamilnadu, India. Currently he is working as a senior lecturer in the School of Electrical Systems Engineering, University Malaysia Perlis (UniMAP), Malaysia. He has authored more than twenty papers in international journals and conferences. He is a member of IEEE, IEEE-Power Electronics Society, IEEE-Communications Society and a life member of the Indian Society for Technical Education (ISTE). He was an organizing Chair for the IEEE sponsored second International Conference on Computer Communication and Informatics (ICCCI 2012) held at Coimbatore, India during 10–12, January 2012. He is an editorial board member for the International Journal of Engineering, Science and Technology, Nigeria and a reviewer for the European Transactions on Electrical Power and technical program committee member for various IEEE international/ national conferences.

His research interests include power electronics circuits, renewable power conversion systems and solid state control of electrical drives.

Ammsasi Krishnan received the B. Sc. degree in electrical engineering and the M. Sc. degree in control systems from Madras University, India in 1966 and 1974, respectively. Then he received the Ph.D. degree in electrical engineering (control, computers) from Indian Institute of Technology, Kanpur in 1979. He has been in the field of technical teaching and research for more than four decades at Government College of Technology and Coimbatore Institute of Technology, Tamilnadu, India. From 1994 to 1997, he was an associate professor in electrical engineering at University Pertanian Malaysia (UPM), Malaysia. Currently he is a Dean with K.S.R. College of Engineering, Tamil Nadu, India. He has published more than 200 papers in International Journals and Conferences. He is a senior member of IEEE, life fellow Institution of Engineers of India, IETE of India and Computer Society of India.

His research interests include control systems, power electronics and electrical machines.

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Thangaprakash, S., Krishnan, A. A new switching scheme for Z-source inverter to minimize ripples in the Z-source elements. Int. J. Autom. Comput. 9, 200–210 (2012). https://doi.org/10.1007/s11633-012-0634-4

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  • DOI: https://doi.org/10.1007/s11633-012-0634-4

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