Research on key techniques of green mechanical press directly driven by transverse flux machine

A novel driving system of mechanical press is proposed for achieving green production equipment by direct drive technology. Its major parameters are analyzed and defined. The motor suitable for direct drive applications in the new system plays a crucial role, so transverse flux machine (TFM) is an ideal alternative for its high force densities. A new design of TFM which features a unique configuration that is composed of assembled stators and flux-concentrating rotor is proposed. It exhibits low manufacturing costs and meets high torque, low speed applications. 3-D FEA based optimization is used to define new TFM important parameters. The driving system of green mechanical press is very simple and it achieves a reduction of 30% of the energy losses compared with that of JB23-63 mechanical press which is the initial equipment of the new design.