Abstract
This paper proposes a new inrush current suppressor using a series-connected small-rated PWM converter for a transformer. The PWM converter is directly connected in series between the source and transformer without a matching transformer. The inrush phenomena of the matching transformer, thus, can be avoided. The control gain and required ratings of the series-connected small-rated PWM converter arc discussed in detail. The capacity of the DC capacitor of the PWM converter is also discussed considering the active power flows into the PWM converter. The PSCAD/EMTDC is used to verify the validity of the proposed inrush current suppressor. A prototype experimental model is constructed and tested. The experimental results demonstrate that the proposed suppressor can perfectly overcome the inrush phenomena of transformers.
| Original language | English |
|---|---|
| Pages (from-to) | 45-55 |
| Number of pages | 11 |
| Journal | Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi) |
| Volume | 160 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Aug 2007 |
Keywords
- Inrush current
- Matching transformer-less
- Small-rated voltage-source PWM converter
- Transformer
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering