Journal
IET POWER ELECTRONICS
Volume 13, Issue 16, Pages 3686-3696Publisher
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/iet-pel.2020.0215
Keywords
feedforward; electric current control; power generation control; distributed power generation; control system synthesis; voltage control; power supply quality; compensation; grid-forming improvements; feed-forward action; load current prediction; control law design; experimental verification; grid-forming dispatchable distributed generation; prime mover; microgrid voltage quality; control strategy; outer voltage loop; external loop; DC voltage; high-quality AC waveform; suitable current controller; feed-forward compensation; output voltage quality
Categories
Funding
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brasil (CAPES) [001]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico - Brasil (CNPq)
- Fundacao de Amparo a Pesquisa no Estado de Minas Gerais (FAPEMIG)
Ask authors/readers for more resources
This work deals with the control law design and experimental verification of a grid-forming dispatchable distributed generation based on a back-to-back converter. The proposed system brings several improvements to the prime mover as well as to the microgrid voltage quality. The control strategy is based on an inner current and an outer voltage loop for both sides of the converter. The external loop of the back-to-back input side, which is connected to the generator, is responsible for regulating the DC voltage. On the other hand, in the output side, the voltage loop ensures a high-quality AC waveform to feed the loads. A comprehensive discussion regarding the current controller with harmonic mitigation is performed to justify the controller's choice. It is shown that a suitable current controller significantly improves the disturbance rejection. A feed-forward compensation based on the load current prediction without any additional sensor is proposed to improve the output voltage quality. Experimental results are used to validate the proposed control law and to show the improvements and benefits of the system.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available