High Pulse Current IGBT Power Module for MRM Drive

The Magnet Reversal Motor (MRM) is an innovative motor to achieve substantial reduction of conduction loss in Cu wire by employing magnetization reversal principle by high magnetic flux pulse in the stator. MRM has significant advantages over conventional motors in energy efficiency in low rpm range which the conventional motor has the problem of lowering in the efficiency. This paper presents newly developed IGBT power module with very low profile to MRM high flux generation. In a single PCB based module consists of a full-bridge with isolated gate drivers as well as a DC-link capacitor. Several PCBs are installed on top of each other as multi-cascade flux pulse generation (MCMF) in order to integrate the drive circuits compactly. These designed PCB s were used to demonstrated to generate 1-2T flux density required to drive the MRM.