BIDIRECTIONAL CONVERTER
- A
non-isolated bidirectional DC-DC Converter has been presented in this article for
charging and discharging the battery bank through single circuit in applications
of Uninterruptible Power Supplies (UPS) and the hybrid electric vehicles.
- The
presented bidirectional converter operates under zero voltage switching (ZVS)
condition and provides large voltage diversity in both the modes of operation.
- This enables the circuit to step up the low battery bank voltage to high DC
link voltage and vice versa.
- The bidirectional operation of the converter is
achieved by employing only three active switches, a coupled inductor and an
additional voltage clamped circuit.
- The experimental results of a 300W prototype of the proposed
converter confirmed the validity of the circuit.
- The maximum efficiency of 96%
is obtained at half load for boost operation mode, and 92% for buck mode of
operation.
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