Boost Multilevel Cascade Inverter for Hydrogen Fuel Cell Light Railway Vehicles

This article presents a ground breaking traction drive for fuel cell-powered light rail vehicles based on multilevel cascade converter with H-bridge cells. The provides dc–ac power conversion unique buck–boost capability to compensate the variation of cell terminal voltage load power. In comparison conventional boost inverter, connection dc–dc and source proposed has significant benefits much smaller inductor size, lower dc side current ripple, waveforms at ac output. modeling design submodule capacitors, taking into account full speed range motor. concept been fully validated bespoke experimental prototype driving an induction motor, showing suitability as hydrogen-powered vehicles.