High Performance Control of Interleaved Boost Converter for AC Railway Application

This paper describes the development of four-cell interleaved boost converter as well as the operation of this converter and its control scheme. The algorithm for digital control of singlephase boost-type switching-mode-rectifier is developed and digitally implemented in a digital signal processor based system. A prototype of the boost converter, rated at 120 kW, has been designed and implemented for use as an auxiliary power supply of electrical vehicles. Experimental results in digital control, synchronization operation and current sharing are presented.