DC link voltage controller for three phase vienna rectifier with compensated load current and duty

Lee, Seung Tae; Lim, Jae-Uk; Kim, Hag-Wone; Cho, Kwan-Yuhl

doi:10.1109/peds.2017.8289288

Cited by 2 publications

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When a microgrid system operates in standalone mode, it is necessary to further improve the accuracy of the reactive power sharing, because the inverter operates as a voltage source, and has characteristics that are sensitive to the system environment and parameters. A study was made to design a feed-forward controller through the modeling of a three-phase inverter and rectifier [21][22][23]. However, the algorithm for seamless transfer in the grid-connected system was not considered, and the research was conducted under simple inverter load conditions.…”

Section: Introductionmentioning

confidence: 99%

Seamless Transfer Algorithm of AC Microgrid Inverter Compensating Load Current for Weak Grid

et al. 2019

Self Cite

View full text Add to dashboard Cite

In this paper, we propose a voltage control technique for the seamless transfer algorithm of a microgrid inverter. When the microgrid inverter is switched from grid-connected mode to standalone operation mode, an output voltage transient may occur, and adversely affect the load. To solve this, seamless transfer algorithms that complete mode switching within 4 ms have been studied. However, previous control techniques have very complex structures. In this study, we find the cause of the voltage transient occurring in the mode conversion, through state average modeling of the inverter. Subsequently, we propose a feed-forward compensator for seamless transfer. The cause of the voltage transient is removed by the compensation, and smooth mode switching is achieved. The proposed controller is verified by Powersim (PSIM) simulations.

show abstract

Section: Introductionmentioning

confidence: 99%