Abstract: Power supply arrangement for distribution of power from a DC power source having a positive terminal and a negative terminal to at least a first and a second DC power consumer, comprising: a first DC power consumer connected to the negative terminal of the DC power source, a first DC-DC switching power converter connected to the first DC power consumer, and connected to the positive terminal of said DC power source, a second DC power consumer connected to the negative terminal of the DC power source, a second DC-DC switching power converter connected to the second DC power consumer, and connected to the positive terminal of said DC power source, wherein a unit comprising a capacitor connected in parallel with an electrical device is arranged in each of the first and second return lines, wherein said electrical device has a diode function, whereby circulating ground loop currents are prevented.

Abstract: A high power electrical distribution system for distribution high power to at least one consumer arranged on a rotatable element. The distribution system includes at least one high frequency alternating current HFAC generator configured to generate HFAC. A rotary power transformer is connected to the at least one HFAC generator. The rotary power transformer includes a stationary part and a rotatable part and is configured to receive HFAC from the at least one HFAC generator and to couple HFAC electrical energy from the stationary part to the rotatable part. At least one high power distribution bus is located on the rotatable element and is configured to receive HFAC from the rotary power transformer and to distribute HFAC to the at least one consumer.

Abstract: A power converter system suitable to provide a load with electrical power, the system comprising; an input voltage terminal; an output voltage terminal; a first power converter unit; a second power converter unit; an input relay unit; an output relay unit; a control unit; wherein the control unit is configured to control the input relay unit and the output relay unit such that the first and second power converter units are engaged alternating at subsequent power ups of the voltage input terminal.

Abstract: A power converter system suitable to provide a load with electrical power, the system comprising; an input voltage terminal; an output voltage terminal; a first power converter unit; a second power converter unit; an input relay unit; an output relay unit; a control unit; wherein the control unit is configured to control the input relay unit and the output relay unit such that the first and second power converter units are engaged alternating at subsequent power ups of the voltage input terminal.

Abstract: Power supply arrangement for distribution of power from a DC power source having a positive terminal and a negative terminal to at least a first and a second DC power consumer, comprising: a first DC power consumer connected to said negative terminal of said DC power source by means of at least a first return line, a first DC-DC switching power converter connected to said first DC power consumer, and connected to said positive terminal of said DC power source, a second DC power consumer connected to said negative terminal of said DC power source by means of at least a second return line, a second DC-DC switching power converter connected to said second DC power consumer, and connected to said positive terminal of said DC power source, wherein a unit comprising a capacitor connected in parallel with an electrical device is arranged in each of said first and second return lines, wherein said electrical device has a diode function, whereby circulating ground loop currents are prevented.

Abstract: A high power electrical distribution system for distribution high power to at least one consumer arranged on a rotatable element. The distribution system includes at least one high frequency alternating current HFAC generator configured to generate HFAC. A rotary power transformer is connected to the at least one HFAC generator. The rotary power transformer includes a stationary part and a rotatable part and is configured to receive HFAC from the at least one HFAC generator and to couple HFAC electrical energy from the stationary part to the rotatable part. At least one high power distribution bus is located on the rotatable element and is configured to receive HFAC from the rotary power transformer and to distribute HFAC to the at least one consumer.

Abstract: A DC/DC-rectifier includes a transformer and a primary side bridge. The primary side bridge comprises a first pair of switches and a second pair of switches, and a secondary side bridge also comprises a first pair of switches and a second pair of switches. The switching of the first pair of switches on the primary side is linked to the switching of the first pair of switches on the secondary side. The linking is accomplished by switching off the first pair on the secondary side when the first pair on the primary side is switched on, and conversely, when the first pair on the primary side is switched off.

Abstract: The invention relates to a method for use in a DC/DC-rectifier, with a transformer and a primary side bridge, the primary side bridge comprising a first pair of switches and a second pair of switches, and a secondary side bridge comprising a first pair of switches and a second pair of switches, with linking of the switching of the first pair of switches on the primary side to the switching of the first pair of switches on the secondary side. The method comprises linking of the switching of the first pair of switches on the primary side to the switching of a first pair of switches on the secondary side by switching off the first pair on the secondary side when the first pair on the primary side is switched on, and conversely, when the first pair on the primary side is switched off.

Abstract: The invention relates to a power device (100), comprising at least a first and a second DC-DC-converter (110, 120, 130), each converter having respective input and output voltages, and respective input and output currents, each converter (110, 120, 130) converting an input DC-voltage level to an output DC-voltage level, each converter comprising input means for a control signal (Vc), the device (100) additionally comprising a control means (140) common to the first and second converters, and arranged to detect a first output voltage (Vtest) at a point (150) in the device which is a common point for the output voltages of the first and second converter (110, 120, 130), the control means (140) delivering a common control signal (Vc) to the control input means of each converter, said common control signal (Vc) being varied according to the level of the voltage at said common point (150).