Voltage-Mode-Current-Control Concept for Current-Source- Inverters in Grid Integration

Konferenz: PCIM Europe 2019 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07.05.2019 - 09.05.2019 in Nürnberg, Deutschland

Tagungsband: PCIM Europe 2019

Seiten: 6Sprache: EnglischTyp: PDF

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Sandaruwan, Borala Liyanage Lahiru; Abeyratne, Sunil Gamini (University of Peradeniya, Sri Lanka)
De Silva, Ranmuni Thilesh Thanura (CodeGen International (Pvt.) Ltd., Sri Lanka)

Proliferation of Power electronics is causing power-quality issue with regard to harmonics and common-mode voltages at the grid-edge. The voltage-source inverters are inherently weaker due to common-mode voltage in this context. However, the current-sourced inverters generate pure-sinusoidal voltages and thus have an edge on the voltage-sourced inverters in the grid integration of renewables. This paper presents a current-sourced, unity power-factor, controller for grid integration. The controller is unique in the structure that it is named as "Voltage-Mode-Current-Controller". The simulation results show that the inner voltage-loops with the outer current-loop suppresses the LC oscillations effectively due to the dead-beat voltage controller.