期刊
SUSTAINABLE ENERGY GRIDS & NETWORKS
卷 16, 期 -, 页码 145-155出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.segan.2018.07.004
关键词
Voltage source inverter; Active damping; Single voltage loop and modified digital resonant controller
资金
- CNPq [404927/2013-0]
- CAPES
- FAPEMIG [APQ-01666-15]
- INERGE
- UFJF
- UNIFEI
This paper deals with the output voltage control problem of a three-phase three-wire voltage source Inverter (VSI) with LC output filter. A novel discrete-time active damping technique is proposed in order to damp the filter resonance without the need of current feedback. The method is based on an inner voltage feedback with digital lead compensator on the feedback path. A modified digital resonant controller is also proposed to reject the current harmonic disturbance drawn by nonlinear loads. The resonant controllers are connected in series and the design is based on its zeros damping. Results from a small scale experimental setup are used to validate the proposed control strategy. (C) 2018 Elsevier Ltd. All rights reserved.
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