Analysis of multidevice interleaved boost converter for high power applications

In this paper, a multidevice interleaved boost converter (MDIBC) is proposed for high-voltage and high-power applications. One of challenge in designing a boost converter for high power application is how to handle the high current at the input side. A multidevice structure with interleaved control is proposed to reduce the input current ripples, the output voltage ripples, size and weight of the passive components with high efficiency compared with the other topologies. In addition, low EMI and low stress in the switches are expected, which decreases the conduction losses and lengthens the life time of input source. Even the low voltage stress makes the low-voltage-rated switching devices can be adopted for reductions of conduction losses and cost. The proposed converter is compared to other converter topologies such as conventional boost converter (BC), multidevice boost converter (MDBC), and two-phase interleaved boost converter (TBC). Furthermore, a state space average model is derived for these dc/dc converters. The dc/dc converter topologies and their controller are designed and investigated by using MATLAB/ Simulink. The simulation results have demonstrated that the proposed converter is more efficient than other dc/dc converter topologies in achieving high performance and reliability for high-power dc/dc converters.