A second-order generalized differentiator method for eliminating DC component in the three-phase PLL for grid-connected inverters
| Autor: | Choong-Ryeol Lee, Hong-Hee Lee, Tae-Won Chun |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
business.industry 020209 energy 020208 electrical & electronic engineering 02 engineering and technology Synchronization (alternating current) Phase-locked loop Differentiator Three-phase Control theory Integrator Frequency grid 0202 electrical engineering electronic engineering information engineering business Digital signal processing DC bias |
| Zdroj: | 2017 20th International Conference on Electrical Machines and Systems (ICEMS). |
| DOI: | 10.1109/icems.2017.8056010 |
| Popis: | This, paper proposes a method to eliminate the dc component in the measured three-phase grid voltage as the input signals of phase-locked loop (PLL). The dc component in the input signals of PLL causes a low-frequency oscillation of grid frequency. The dc component elimination can be achieved by replacing the integrator in the second-order generalized integrator (SOGI) with a differentiator, named as second-order generalized differentiator (SOGD). The good performance of a proposed SOGD is validated with experimental results with 32-bit DSP by using unbalanced three-phase signals with dc components. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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