logging in or signing up power electronics in wind energy system hussyh64 Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 409 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: April 07, 2013 This Presentation is Public Favorites: 0 Presentation Description In this presentation the different generators used in wind energy system is analysed and suitable converts for the generators are proposed and explained. Comments Posting comment... Premium member Presentation Transcript POWER ELECTRONICS IN WIND ENERGY SYSTEM a paper presentation on power electronic converters in wind energy systems : POWER ELECTRONICS IN WIND ENERGY SYSTEM a paper presentation on power electronic converters in wind energy systems By Althaf hussaisn Shaik(K L university) Nadendla. Srikanth(K L University) 1Theme: Theme To improve the utilization of wind energy effectively by using power electronic converters . 2contents: contents Introduction Wind energy conversion system Types of wind energy systems DFIG P.E converter in WEC Comparison of WEC systems Boost converter and Inverter Importance of Z-Source Converter Switching sequence MATLAB simulation model C onclusion 3Wind Energy Conversion System : W ind E nergy C onversion S ystem F ig: Block diagram Fixed speed wind turbines Partially Variable speed wind turbines Fully Variable speed wind turbines Electrical G enerator Wind turbine Power electronic interface Gird 4Variable speed wind energy conversion system: V ariable speed wind energy conversion system DFIG Transformer Wind gear external box grid partial-rating power converter Fig: variable speed wind energy conversion system G DC AC AC 5Fully variable wind energy conversion system: Fully variable wind energy conversion system AC-DC converter DC-AC converter DC A C G rid Gear box Syn generator DC-Link Fig: Fully-variable system 6Why DFIG ?: Why DFIG ? DFIG provides more operating range compared to other It provides -40% to +30% speed range. The power flows in both rotor and stator 7Why a P.E converter is needed in wind energy conversion ?: Why a P.E converter is needed in wind energy conversion ? The wind flows may not be fully controlled and can cause variances in the frequency at which the power is generated . Power electronic devices are utilized in these systems to convert the generated ac voltages into HVDC. Through these devices, the power delivered by these systems is cleaner and has a higher P.F . 8Comparison of wind energy conversion systems: Comparison of wind energy conversion systems Sno: WEC Based on Generator Grid integration 1 Fixed speed System Induction generator Direct 2 Partially variable System DFIG VSC 3 Fully-variable system Induction or synchronous VSC or ZSC 9Wind energy conversion system: Wind energy conversion system Fig: fully variable system 10Boost converter + Inverter: Boost converter + Inverter Fig: WEC system with boost converter and inverter 11Z-source inverter: Z-source inverter Fig: WEC system with Z-source converter 12Single phase ZSC: Single phase ZSC v z s a s t z s a s Fig: single phase z-source converter 13Active state: Active state Fig: Active state 14Shoot through state: Shoot through state Fig: Shoot through state 15Switching sequence: Switching sequence S.no S1 S2 S3 S4 STATE 1 1 1 0 0 Zero 2 1 1 0 1 Shoot through 3 1 0 1 0 Active 4 1 1 1 0 Shoot through 5 0 0 1 1 Zero 6 0 1 1 1 Shoot through 7 0 1 1 0 Active 8 1 0 1 1 Shoot through 164: 4 Fig: MATLAB simulation 17Results: Results Fig: Active and shoot through states 18ZSI shoot through stage: ZSI shoot through stage Fig: shoot through state 19Conclusion:: Conclusion: By using both DFIG and ZSI in wind energy systems we can get more efficiency and control over the active and reactive powers. The proposed system has high performance, minimal count, increased efficiency and reduced cost. 20PowerPoint Presentation: Any queries ??? 21PowerPoint Presentation: Thank You 22 You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.