A Full-Feedforward Harmonic Mitigation Scheme in Multi-Parallel Grid-tied Inverters
| Autor: | Kiarash Gharani Khajeh, Firuz Zare, Davood Solatialkaran, Mithulananthan Nadarajah |
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| Rok vydání: | 2020 |
| Předmět: |
Admittance
Computer science 020209 energy 020208 electrical & electronic engineering Feed forward 02 engineering and technology Grid Transfer function Control theory Harmonics Distortion 0202 electrical engineering electronic engineering information engineering Harmonic Inverter Computer Science::Distributed Parallel and Cluster Computing |
| Zdroj: | 2020 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES). |
| DOI: | 10.1109/pedes49360.2020.9379896 |
| Popis: | The main power quality challenge of a set of parallel grid-tied inverters is the effect of grid voltage harmonics on the injecting current of the inverter set. In this paper, a novel full-feedforward strategy is proposed for suppression of the current harmonics, caused by the grid distortion, in a multi-parallel grid-tied inverters based system. The proposed strategy is based on producing a negative virtual admittance (equal to total system admittance) by applying a full-feedforward function from the grid voltage into only one of the inverters' set control loop. The produced negative admittance cancels the whole system admittance and consequently, the grid voltage harmonic effect on the system output current is disabled. The main contribution of this paper is that the proposed feedforward transfer function is applied to only one of the inverters. Hence, the conventional time and cost investments are considerably reduced. The simulation results prove the efficiency of the proposed method. |
| Databáze: | OpenAIRE |
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