公开(公告)号：EP0178615A3

公开(公告)日：1987-08-05

申请号：EP85112998

申请日：1985-10-14

Applicant: KOLLMORGEN TECHNOLOGIES CORPORATION

Inventor： Byrne, John V. ,  McMullin, Francis, Dr. ,  Murphy, John ,  Egan, Michael ,  Kenneally, Patrick

IPC: H02M03/335 ,  H02P06/02

CPC classification number: H02P25/0925 ,  H02P25/092

Abstract: In a power supply system, an inductance L is connected between a rail at a voltage V, and a rail at earth through a switch S. When the switch is opened, a current i 1 flowing from the inductance L is directed to a third rail through a diode D, voltage on the third rail rising to V 1 . The system may function as a dc to dc converter with an output voltage between the V 1 rail and the V 2 rail equal to V 2 -V 1 . The system may alternatively be used in, for example, a reluctance motor drive, in which case a further inductance with associated switch and diode is included in the circuit in inverse configuration to prevent excessive voltage rise on the third rail.