Abstract
In this letter, a universal single-stage on-board charger topology is proposed to support a single-phase ac grid without additional power decoupling (PD) circuits. The converter can control not only power transfer but also PD with only additional capacitor. For an integrated decoupling operation, a novel switching modulation scheme derived from the single-stage dual active bridge with PD analysis is also easy to implement. In addition, the decoupling capacitor is designed by considering both PD and zero-voltage switching (ZVS) operation to ensure efficient full-range operation. The proposed topology has been verified by experimental results for a 6.4-kW modular prototype. A peak efficiency of 96.6% was achieved at a full load condition. The current total harmonic distortion is lower than 5%.
| Original language | English |
|---|---|
| Pages (from-to) | 127-131 |
| Number of pages | 5 |
| Journal | IEEE Transactions on Power Electronics |
| Volume | 41 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2026 |
Keywords
- Full power operation
- high efficiency
- integrated active power decoupling (APD)
- on-board charger (OBC)
- single-phase operation
- single-stage
- switching scheme