High power high voltage gain interleaved DC-DC boost converter application

DC-DC converter is usually an important part in many industrial applications. Especially, high power and high voltage gain DC-DC converter is now required in Fuel Cell Vehicle applications. This paper presents a high power high voltage gain interleaved DC-DC converter. It is a kind of non-isolated boost converter, which will raise a DC voltage of 120 V to a voltage of 700 V. The rating power of the converter may be at 60 kW. There are four modules of DC boost converter in this converter topology. All four modules are connected in parallel and controlled by 90 phase shifting degree to each other. The converter topology will be simulated by MATLAB/SIMULINK. The classical PI controller is selected for each current loop. Experiments on this converter are conducted based on a novel test bench, which uses a boost converter and a buck converter to form an energy cycle. Then experimental results will be studied in the lab for this converter.

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