Nonlinear Disturbance Observer Based Control of Three Phase Grid Forming Inverter for Distributed Generation System
| Autor: | Rishi Kant Sharma, Shivraman Mudaliyar, Sukumar Mishra |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Observer (quantum physics)
business.industry Computer science 020209 energy 020208 electrical & electronic engineering 02 engineering and technology Nonlinear system Three-phase Control theory Distributed generation 0202 electrical engineering electronic engineering information engineering Waveform Inverter business Voltage |
| Zdroj: | 2018 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES). |
| DOI: | 10.1109/pedes.2018.8707734 |
| Popis: | The operation of three phase grid forming inverter for standalone distributed generation (DG) system under unbalanced and nonlinear loading condition is considered. Under unbalanced and nonlinear loading conditions, the output voltage of grid forming inverter gets distorted and its power quality is diminished. Hence, to reject the undesirable effects of load on the output voltage waveform of grid forming inverter, a novel multivariable nonlinear disturbance observer (NDOB) is proposed. The controller and observer are designed in synchronous reference frame (SRF). The observed disturbances are rejected using feed-forward control in the outer voltage control loop. The proposed nonlinear disturbance observer based control (NDOBC) with conventional multi-loop proportional-integral (PI) voltage and current control enhances the power quality of output voltage waveform under load disturbances. The experimental results verifies the effectiveness of proposed observer based disturbance rejection control for three phase grid forming inverter. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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