Comparative Analysis of Conventional, FWZSI and ZSMLI Based UPS Systems
Suresh.V1, Senthil Kumar. R2
1Suresh.V, Assistant Professor, Department of Electrical & Electronics Engineering, Bannari Amman Institute of Technology, Alathukombai, Sathya Mangalam, Tamil Nadu, India.
2Senthil Kumar R, Assistant Professor, Department of Electrical & Electronics Engineering, Bannari Amman Institute of Technology, Alathukombai, Sathya Mangalam, Tamil Nadu, India.
Manuscript received on 01 December 2018 | Revised Manuscript received on 06 December 2018 | Manuscript Published on 26 December 2018 | PP: 115-120 | Volume-8 Issue- 2S2 December 2018 | Retrieval Number: BS2023128218/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The UPS systems always have the drawbacks such as higher switching stress, higher THD value and lower efficiency when normal inverters used. Four wire z-source inverter (FWZSI) and z-source multilevel inverter (ZSMLI) are proposed for UPS application to overcome these problems. A comparison is carried out between the proposed FWZSI and ZSMLI with the conventional power converters for UPS systems. The comparison is made based on voltage boost, dc link voltage, ripples in capacitor voltage and inductor current, voltage stress across power switches, power quality and power conversion efficiency . Also the shoot through pulse insertion in the four wire Z-source inverter and z-source multilevel inverter are compared and analyzed in detail. The performance of proposed and conventional power converters are compared for different values of input and output conditions. The results for each scheme are verified with the laboratory experimental set up [1], [2].
Keywords: FWZSI, ZSMLI, UPS, Voltage Stress, THD.
Scope of the Article: Computer Architecture and VLSI