Dissertation > Excellent graduate degree dissertation topics show

Research on the Differential Three-Level Inverter with Stand-alone and Grid-connected Operation Modes

Author: MaFeng
Tutor: LiLei
School: Nanjing University of Technology and Engineering
Course: Power Electronics and Power Drives
Keywords: TL single-stage non-isolated differential PV inverter constant-frequencycurrent hysteretic control
CLC: TM464
Type: Master's thesis
Year: 2013
Downloads: 110
Quote: 0
Read: Download Dissertation

Abstract


In recent years, the environment problems become more and more serious and prominent, especially the lack of energy which restricts the economy of fast sustainable development. In order to solve the problems, the renewable resources become growing attractive for most countries. The solar energy is one of the most potential green ones, because it’s clean, pollution-free and renewable. As China is rich in solar resource, making a rational use of it means a vital strategy. The photovoltaic (PV) inverter is the core part of the PV regeneration system, as its performance has a direct effect on the PV system. With regards to the PV inverter, it’s meaningful to carry out related research on its topology and control method.Focusing on the research status and development trend of the PV inverter, the single-stage PV ones are further emphasized by introducing the differential structure and three-level (TL) technology. As a result, a family of non-isolated TL DC-DC converter type differential inverters is proposed.The thesis chooses the Buck type TL differential inverter as an example to analyse. When it’s working at the stand-alone mode, two control methods called full-cycle operation and half-cycle operation are presented respectively. The different working stages are discussed in detail too, which are all proved by simulation.The thesis explores the control ways of Buck type TL differential inverter when working at the grid-connected mode. A novel constant-frequency current hysteretic control strategy is put forward. By comparing the simulation waveforms of the new constant-frequency current hysteretic control with the traditional one, its feasibility and superiority are verified.Finally the paper designs the hardware of the Buck type TL differential inverter, including the main circuit, driving circuit, sensing circuit and so on. The DSP chip TMS320F2808, combined with its CCS4.3simulation platform and V2simulator are utilized to produce the switch control software codes and debug the prototype. The final experimental waveforms of the prototype further prove the correctness of the theory analysis.

Related Dissertations

  1. Research on Scheduling of Whole-set Orders in JSP Based on Differential Evolution Algorithm,F273
  2. Research on Data Acquisition and Processing Methods for Weapon Evaluation System,TJ06
  3. The Means of Clinical Screening in Make Differential Diagnosis between L4-L5 and L5-S1,R681.53
  4. Research on the Theory of the Transmission-line Metamaterials and Their Applications,O441.6
  5. Stochastic Optimal Dispatch of Power System Considering Uncertain Line Failures under Extreme Weather Disaster,TM73
  6. Anatomy of Root, Stem and Its Lignin Content and Expression of Related Key Genes in Lignin Synthesis of Lodging Resistant Brassica Napus L.,S565.4
  7. Resistant Identification and Genotype Analysis of Several Rice Varieties to Blast in Jiangsu Area,S511
  8. The cDNA-AFLP Analysis of Gene Differential Expression and RNA Editing of ATP6 Gene between Cytoplasmic Male Sterile Lines and Their Maintainer Lines in Soybean (Glycine max (L.) Merrill),S565.1
  9. The Genes Expression Analysis of Cotton Fiber Initiation Stage and Characterization of Three New Genes in Gossypium,S562
  10. A Normal Criterion Concerning Differential Polynomial and Omitted Function,O174
  11. Gene Differential Expression and RNA Editing of atp9 between Soybean Cytoplasmic-Nuclear Male Sterile Lines and Their Maintainer Lines,S565.1
  12. Quantiative Proteomics of Liver Immortalized Cell Line Chang Liver and Liver Cancer Cell Line HepG2,R735.7
  13. Differences in different populations compared proprioception and Brain Mechanisms,B845
  14. Hyperaccumulators Solanum nigrum (Solanum nigrum L.) tolerance and accumulation of Cd physiological and molecular mechanism of,X173
  15. Study on a New Method for Digital Transformer Protection Based on Wavelet Neural Network and FPGA,TM407
  16. Research on the Mechanism of Polyester Silk-like Fabric Based on Differential Polyester Fiber,TS151
  17. Existence and Iterative Approximations of Nonoscillatory Solutions of Higher Order Functional Differential Equations,O175
  18. Qualitative Study of Almost Periodic Solutions of Some Competition System,O175
  19. Stability Criteria for Fuzzy and Set Control Differential Equations,O175
  20. DB logistics company operating system problems and countermeasures,F259.23
  21. Preliminary Study of the MRI Diagnosis and Differential Diagnosis in Multiple System Atrophy , Progressive Supranuclear Palsy and IPD,R445.2

CLC: > Industrial Technology > Electrotechnical > Transformers, converters and reactors > Converter > Inverter
© 2012 www.DissertationTopic.Net  Mobile