Full Order Observer Based Control of Single-Phase Inverter Both in Standalone and Gridtie Modes
| Autor: | Nagulapati Kiran |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Control and Optimization Computer Networks and Communications business.industry LC circuit Inductor law.invention Capacitor Electric power system Hardware and Architecture Control and Systems Engineering law Control theory Filter (video) Computer Science (miscellaneous) Electronic engineering Inverter Grid-tie inverter Electrical and Electronic Engineering business Instrumentation Information Systems |
| Zdroj: | Bulletin of Electrical Engineering and Informatics. 5:442-450 |
| ISSN: | 2302-9285 2089-3191 |
| DOI: | 10.11591/eei.v5i4.562 |
| Popis: | In 3-phase systems, the reliability of 3-phase Inverter is not good. In such situations Paralleled Inverter Systems are used. Parallel Inverter operation has a major topic in uninterruptible power system (UPS) applications where the design is focused on the standalone operation, and output stage is typically an inductor-capacitor filter. Most of the standalone inverter systems use a LC filter and proportional-integral (PI) controller in their control loops. When connecting the paralleled inverters to utility grids, the capacitor becomes redundant and thus either a pure inductor or an LCL filter can be used as inverter output stage. Compared with the L filter, the LCL filter is more attractive because it cannot only provide higher harmonics attenuation with same inductance value, but also allow inverter to operate both in standalone and grid-tie modes, which makes it a universal inverter for distributed generation applications. Output of Inverter should always be checked. In this paper, a full order observer for Inverter System is designed and is used for estimation of State Variables of the Inverter System. Two modes are adopted: a) Grid-tie Mode b) Standalone Mode. MATLAB/Simulink is used to verify and validate the proposed idea. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|