Power Conversion Performance and the Suitability of Z-Source Inverter of PMSG Based WECS at Variable Wind Speed Conditions

Abstract:

This paper presents a Permanent Magnet Synchronous Generator (PMSG) based wind energy conversion system with Z-source inverter. The output voltage of a Z-source inverter remains constant so long as the wind speed remains constant. Unfortunately, wind speed keeps changing and hence the output voltage at the inverter outlet. This poses a problem in getting the inverter connected to the grid. Recognizing the fact that the output voltage level at the inverter depends on the shoot through period, the authors propose a varying shoot through period depending on the wind velocity which enables the voltage level remain constant at the inverter output. A neural network is trained and made use of to predict the required shoot through period depending on the current wind velocity.

• Periodical: Applied Mechanics and Materials (Volume 550)
• Pages: 144-156
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.550.144
• Online since: May 2014
• Authors: Radhika A*, L. Sivakumar

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