Ricoh has acquired Presentation Products, an audiovisual integrator. The acquisition expands Ricoh’s digital services ...

Abstract: A power switching device is one of the key elements to determine the performance of hybrid electric vehicles (HEVs) and pure electric vehicles (EVs). Recently, the power devices using ...

Abstract: “Active flux” is an alternative unitary concept for the control of practically all ac drives. As aligned to rotor d-axis (for synchronous and flux-modulation machines) and to rotor flux axis ...