Design of Voltage Source Inverter for Ph.D candidate.pptx

Design of VSI

1. DEFENCE SERVICES TECHNOLOGICAL ACADEMY DEPARTMENT OF ELECTRICAL ENGINEERING 9th BATCH, DOCTOR OF PHILOSOPHY Presented by; Captain Tin Tun Aung Pyin Oo Lwin Date – 10.5.2024 Proposal of the Research Work about “ Dynamic Analysis and Control Strategies for Improvement of Output Quality of Voltage Source Inverter”

2. 2 Outline of Presentation Proposed Thesis Title Abstract Introduction Problem Statement Aim Objectives Field of Study Literature Review Methodology Expected Outcomes Timeline Plan Proposed Supervisors

3. Proposed Thesis Title Dynamic Analysis and Control Strategies for Improvement of Output Quality of Voltage Source Inverter 3

4. Abstract The enhancement of output quality in Voltage Source Inverters (VSIs), crucial components in power electronics systems, is explored in this research work. VSI behavior under diverse conditions is investigated through dynamic analysis, employing modeling, simulation, and experimentation. Control strategies, including advanced modulation techniques and predictive control, are proposed to mitigate shortcomings and bolster output quality. Integration of digital signal processors and emerging technologies is explored for real-time implementation and efficiency. The effectiveness of these strategies is validated through case studies. Overall, insights into dynamic analysis and control strategies for optimizing VSI output quality are provided, contributing to the advancement of power electronics. 4

5. Introduction The introduction of the research work on dynamic analysis and control strategies for improving the output quality of Voltage Source Inverters (VSIs) is aimed at setting the stage for understanding the significance of VSIs in power electronic systems. Emphasis is placed on the importance of output quality, with parameters like total harmonic distortion (THD) and voltage regulation being highlighted. The objectives of the study, including dynamic analysis techniques and control strategies aimed at enhancing VSI performance, are outlined. Furthermore, an overview of the paper's structure is provided, indicating the sections that will be covered, such as dynamic analysis, control strategies, and the integration of emerging technologies. 5

6. Voltage source inverters (VSIs) are critical components in modern power systems, converting DC power into AC power. However, challenges such as transient effects during load changes and switching operations, harmonic distortion in the output voltage, and the need for robust control algorithms hinder the achievement of high-quality output voltage. Therefore, the problem statement of this research is to investigate dynamic analysis techniques and develop effective control strategies customized for voltage source inverters to enhance the quality of the output voltage. Problem Statement 6

7. Aim The aim of this research is to investigate dynamic analysis techniques and develop effective control strategies customized for voltage source inverters to enhance the quality of the output voltage. 7

8. Objectives To analyze and mitigate transient effects during load changes, and switching operations to ensure smooth and stable voltage output. To identify harmonic components and implement control measures to minimize harmonic distortion in the output voltage, to meet power quality standards. To develop robust control algorithms suitable for VSIs that can adapt to varying operating conditions and disturbances while ensuring precise voltage regulation. 8

9. Field of Study Power Electronics Control Systems Electrical Machines Harmonics and Power Quality Transient Analysis 9

10. Literature Review Dynamic Analysis of Voltage Source Inverters : Several studies have investigated the dynamic characteristics of VSIs under different operating conditions, load types, and control methods. Control Strategies for Voltage Source Inverters : Various control strategies have been proposed to enhance the output quality of VSIs, including traditional proportional-integral (PI) control, advanced nonlinear control techniques, and model predictive control (MPC). Harmonic Mitigation Techniques: Various harmonic mitigation techniques, including passive filters, active filters, and modulation strategies have been developed . 10

11. Literature Review (Continued) Eugen Vereschago,Vitalii Kostiuchenko, Sergii Novogretskyi, 2020 “Analysis of dynamic characteristics of the inverter operating on a complex load”, Eastern-European Journal of Enterprise Technologies. Nasrudin Abd Rahim, Mohammad Parvez , Mohamad Elias, Mohamad Fathi , F. Blaabjerg, Derek Abbott, Said Al- Sarawi , 2020, “Comparative Study of Discrete PI and PR Controls for Single-Phase UPS Inverter ”, IEEE Access, 10.1109 / ACCESS.2020.2964603. Xie Yinyin , Pei Xuejun , Wang Hongliang , Kang Yong, Chen Yu, Nie Songsong , 2009, “Improvement of The Output Voltage Waveform Technology for Single-phase Inverte ”, 2nd International Conference on Power Electronics and Intelligent Transportation System. 11

12. Literature Review (Continued) Ghazanfar Shahgholian , Jaward Faiz , Mohsen Arezoomand , 2009, “Dynamic analysis and Control Design of a Single-Phase UPS Inverter with Novel Topology and Experimental Implementation,” International Review of Electrical Engineering (I.R.E.E ). H. Shi, Jian Zong , Lin Ren, 2019,” Modified Model Predictive Control of Voltage Source Inverter”, IEEE Advanced Information Technology, Electronic and Automation Control Conference. Lu Wang, 2022, “Optimization of Voltage Dynamic Performance at Inverter Output with Machine Learning and Intelligent Virtual Impedance”, Mobile Information Systems. 12

13. The current state of VSI dynamic analysis under load variations reveals limitations in control strategy optimization. While existing techniques can achieve steady-state voltage regulation, further research is necessary to minimize voltage fluctuations during load transients. Additionally, the need exists to explore multi-objective optimization techniques for control strategies. This would allow for a balance to be achieved between voltage regulation, THD minimization, and efficiency under varying load conditions, ultimately leading to improved VSI performance. 13 Gap to be fulfilled

14. The research methodology includes the following steps: Analyzing existing control strategies and their performance during load transients. Developing improved dynamic models that incorporate the transient behavior of VSIs under varying load conditions. Define performance metrics for VSI control, including voltage regulation accuracy, THD level, and switching losses. Developing a multi-objective optimization framework that considers these metrics simultaneously. Evaluating the performance of optimized control strategies through simulations and hardware testing under various load profiles . Methodology 14

15. Flow Chart of Methodology 15 Analyzing Existing Control Strategies Presenting Final Optimization Control Strategy and its Performance     Evaluating Performance of VSI Control   START Developing mathematical models of VSIs that capture their transient behavior under varying load conditions.. Defining Performance Metrics of VSI Control     Developing Multi-Objective Optimization Framework   END Is Results satisfactory ? Yes No

16. System Block Diagram 16 Input Output VSI +Control Circuit Sensors Controller

17. Expected Outcomes The expected outcome is to develop dynamic models that will accurately capture the transient behavior of Voltage Source Inverters (VSIs) under varying load conditions, providing a more comprehensive framework for control strategy optimization . 17

18. 18 Timeline Plan No. Title 2024 2025 2026 Apr May June July Aug Sep Oct Nov Dec Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec Jan Feb Mar Apr 1 Literature Review                                                   2 Title Defence                                                   3 Literature Review                                                   4 Analysis of existing control strategies for VSIs and their performance during load transients                                                   5 Writing Chapter I,II                                                   6 First Credit Seminar                                                   7 Design of Improved dynamic models                                                   8 Mathematical Modeling of Improved dynamic models                                                   9 Writing Chapter III                                                   10 Second Credit Seminar                                                   11 Definition of performance metrics                                                   12 Multi-Objective Optimization Framework                                                   13 Writing Chapter VI                                                   14 Third Credit Seminar                                                   15 Evaluation of Optimized Control Strategies                                                   16 Simulation of Optimized Control Strategies                                                   17 Writing Chapter V                                                   18 Fourth Credit Seminar                                                   19 Preparing for Defence                                                   20 Defending the Thesis                                                  

19. Effectiveness of Dissertation The dissertation on dynamic analysis and control strategies for enhancing the output quality of Voltage Source Inverters (VSIs) serves as a critical resource for academic and educational endeavors. It offers comprehensive insights into theoretical frameworks, practical applications, and advanced methodologies in power electronics and control systems. Through detailed exploration and implementation of improved dynamic models and control strategies, it provides students with a hands-on learning experience, reinforcing theoretical concepts with practical applications. Moreover, the dissertation inspires further research and innovation in the field by showcasing the significance of dynamic analysis and optimization techniques. As a teaching tool, it makes electrical engineering lessons more interesting, encourages students to do research, and helps share knowledge with others. 19

20. Proposed Supervisors Supervisor – Major Kyaw Zaw Lin Co-Supervisor – Major Min Ye Tun 20

21. Any Comments and Suggestions Please ! 21

22. Thank You for Your Time and Attention 22

23. Proposed Thesis Title Dynamic Analysis and Control Strategies for Improvement of Output Quality of Voltage Source Inverter (or) Robust Control Strategies for VS Inverter under Fluctuating Load Conditions 24