MODULAR MULTILEVEL DC/AC CONVERTER COMPRISING A SERIES CONNECTION OF DC/AC INVERTER SUB-MODULES FOR THE GENERATION OF POLYPHASE OUTPUT VOLTAGES

摘要

The power converter circuitry (4) has two sub modules (22) that are provided in series arrangement, to supply electric power over an inductance (20) from power source (8) delivering direct current (DC) voltage (16). A single-phase half bridge and a single-phase full bridge of the sub modules are connected in parallel for an intermediate circuit capacitor. An inverter half bridge of the first sub module is connected in parallel to the full bridge, to form a multiphase inverter bridge circuit together with the full bridge for supplying a multiphase winding system. Independent claims are included for the following: (1) electromotor; (2) vehicle; and (3) method for operating power converter circuitry.