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- Title
Soft-switching bidirectional DC–DC converter with high voltage conversion ratio.
- Authors
Molavi, Navid; Adib, Ehsan; Farzanehfard, Hosein
- Abstract
This study introduces a soft-switching non-isolated bidirectional DC-DC converter with high voltage conversion ratio and low voltage stress across semiconductor devices. The presented topology is well suited for high step-up/step-down applications. By integrating coupled inductors and switched capacitors techniques, a high step-up/step-down voltage gain is achieved. Active clamp circuits are employed in both high step-up and high step-down operating states to recycle the leakage inductance energy and realise zero-voltage-switching condition for all switches to mitigate the switching losses and improve efficiency. Also, the reverse recovery problem of the body diodes is completely alleviated owing to zero-current-switching performance. The operation principles and theoretical analysis of proposed converter are presented in details. Finally, the experimental results of a 200 W prototype circuit are provided to confirm the validity of the proposed topology.
- Subjects
SWITCHING power supplies; DC-to-DC converters; VOLTAGE control; HIGH voltages; ZERO current switching; ZERO voltage switching
- Publication
IET Power Electronics (Wiley-Blackwell), 2018, Vol 11, Issue 1, p33
- ISSN
1755-4535
- Publication type
Article
- DOI
10.1049/iet-pel.2016.0771