High frequency three-phase PWM grid connected drive using silicon-carbide switches

Publication: Research - peer-reviewArticle in proceedings

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This paper presents controller design procedure for a fully silicon-carbide (SiC) based three-phase grid-connected PWM drive. The influence of the feedforward compensation for the presented setup is studied and the transfer function of the system with feedforward is derived and compared with the normal condition. The presented analytical model helps to calculate the parameters of the close-loop system with the feedforward compensation. According to this model, the stability analysis can be carried out more accurately and a valid comparison can be provided between the system without and with this compensation. The controller is designed for a 5 kW SiC based three-phase rectifier (switching frequency 50 kHz) connected to a 7.5kW SiC based inverter (switching frequency 32 kHz). Experimental results are also carried out to validate the operation of the controller under different operating conditions. A failure test is also conducted to highlight the drawbacks of feedforward with high forward gain.
Original languageEnglish
Title of host publicationProceedings of the 2nd IEEE Annual Southern Power Electronics Conference
Number of pages6
PublisherIEEE
Publication date2016
ISBN (print)978-1-5090-1547-4
ISBN (electronic)978-1-5090-1546-7
DOIs
StatePublished - 2016
Event2nd IEEE Annual Southern Power Electronics Conference - Auckland, New Zealand

Conference

Conference2nd IEEE Annual Southern Power Electronics Conference
Nummer2
LandNew Zealand
ByAuckland
Periode05/12/201608/12/2016