Abstract: Power supply system for mounting to a rail has an AC/DC converter for converting high voltage AC power to low voltage DC power a controller for controlling the power supply system, an AC/DC converter and controller module for mounting to the rail and for connection to the AC/DC converter and controller respectively, and a battery connection and LVBD contactor module for mounting to the rail and for connection to a first battery, wherein the battery connection and LVBD contactor module on a first side is connected to the AC/DC converter and controller module by a first connection interface and where the battery connection and LVBD contactor module on a second side, opposite of the first side, has a first connector of a second connection interface.

Abstract: The invention relates to a method for controlling a series resonant DC/DC converter. The method comprises the steps of: defining a switching period TP having a first half period TA and a second half period TB and defining a subsequent switching period TP+1 after the switching period TP. In a next step, a first set (S1sc1; S1sc1, S4sc1) of switches of a first switching circuit (SC1) is controlled to be ON from the beginning Tstart of the first half period TA minus a time interval ?TAE1, where the time interval ?TAE1 is provided at the end of the first half period TA and a second set (S2sc1; S2sc1, S3sc1) of switches of the first switching circuit (SC1) is controlled to be ON from the beginning Tcenter of the second half period TB minus a time interval ?TBE1, where the time interval ?TBE1 is provided at the end of the second half period TB.

Abstract: Power supply system for mounting to a rail has an AC/DC converter for converting high voltage AC power to low voltage DC power a controller for controlling the power supply system, an AC/DC converter and controller module for mounting to the rail and for connection to the AC/DC converter and controller respectively, and a battery connection and LVBD contactor module for mounting to the rail and for connection to a first battery, wherein the battery connection and LVBD contactor module on a first side is connected to the AC/DC converter and controller module by a first connection interface and where the battery connection and LVBD contactor module on a second side, opposite of the first side, has a first connector of a second connection interface.

Abstract: The present invention relates to a device arranged for converting an AC input voltage to a DC output voltage, comprising a bridgeless boost converter; and a surge protection system. The surge protection system comprises a first protection diode (Dprot1), where the anode is connected to a first AC input terminal and the cathode is connected to a positive boost output terminal (Obp); a second protection diode (Dprot2), where the anode is connected to a negative boost output terminal (Obn) and the cathode is connected to the first AC input terminal; a third protection diode (Dprot3), where the anode is connected to a second AC input terminal and the cathode is connected to the positive boost output terminal (Obp); and a fourth protection diode (Dprot4), where the anode is connected to the negative boost output terminal (Obn) and the cathode is connected to the second AC input terminal.

Abstract: A balancing circuit for systems having at least first and second transformers. The transformers' primary sides are connected to one another. The transformers' secondary sides also are connected to one another. The balancing circuit includes a branch connecting one terminal on the secondary side of the first transformer and the corresponding terminal on the secondary side of the second transformer. The branch has a significant impedance such that the voltage in the secondary sides of the transformers is forced to be substantially equal. A method is also provided for performing balanced operation of a system includes at least a first and a second transformer.