Reduction of parasitic resistance effect in high current energy conversion using bidirectional interleaved converter topology

In practice components used in energy conversion systems are not ideal. These non-idealities not only limit output voltage but also decrease efficiency of conversion. Non-ideality of inductors has considerable effect in comparison with other non-idealities in high current DC-DC converters. This paper proposes the interleave technique to reduce the parasitic resistance effect and to decrease resistive dissipations of converters. Conventional and interleaved DC-DC converters are modeled and simulated to study and compare the dissipation of parasitic resistance in boost and buck modes of operation for the same size of reactive components. Voltage gain and efficiency are obtained for both converters. Results show that in both boost and buck modes of operation interleaved converters introduce resistive dissipations far lower than those in case of conventional converters.