Abstract
A novel CLL resonant converter with a semi-bridgeless active rectifier (S-BAR) is analyzed, and its hybrid control strategy is proposed in this paper. This topology is developed by replacing rectifier lower diodes with synchronous switches and regulation by a phase-shifted pulsewidth-modulation signal. Theoretical and simulation results show that the performance of the proposed S-BAR is appropriate for resonant converters and secondary-side controlled infrastructure requiring a wide voltage range control at the secondary side. The hybrid control algorithm is obtained with the phase-shift and frequency tuning considering the voltage at the load terminal. High efficiency can be maintained by this proposed control, reducing conduction losses and providing zero-voltage switching soft-switching condition with a wide output voltage range. To confirm the performance of the proposed converter, experimental results are provided for which the output voltage/current range from 0 to 80 V/0 to 8.75 A with an input of 120 V and an average efficiency value of 93%.
| Original language | English (US) |
|---|---|
| Article number | 7131532 |
| Pages (from-to) | 6877-6886 |
| Number of pages | 10 |
| Journal | IEEE Transactions on Industrial Electronics |
| Volume | 62 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 1 2015 |
Keywords
- CLL converter
- Frequency
- hybrid
- phase-shift
- resonant
- semi-bridgeless active rectifier
ASJC Scopus subject areas
- Control and Systems Engineering
- Electrical and Electronic Engineering