Abstract:
This study presents a design of 4 phases bidirectional DC converter circuit with interleaved
technique based on the buck and boost converter circuit working principles. For Direction 1 (buck
mode), 24-voltage circuit was transferred into 12-voltage battery load for power storage whereas the
boost converter circuit acted as a voltage-fed circuit to transfer 12V power to a 24V load in
Direction 2 (boost mode).
In this research, a 4 phases bidirectional DC converter circuit was designed and constructed
by using a MOSFET device as a switch mode, switching frequency at 25 kHz, a signal generator, a
microcontrollers control set, and power management by multi-loop PID control.
The test result from MATLAB program through STM32 microcontroller operated with the
4 phase bidirectional DC converter circuit showed that the circuit could be operated and switched in
both directions of buck and boost circuit modes.