System for operating a plurality of power supply modules in parallel
First Claim
1. A system, comprising at least two power supply modules which together feed a load with a DC supply voltage V0, are connected in a redundant configuration, and are each coupled to the load via a respective blocking diode whose cathode carries the voltage V0, each module comprising a feedback loop for its output voltage, which loop includes a voltage controller and a comparator whose positive input receives a respective reference voltage, each module also comprising, in order to realise said feedback, two output voltage terminals, one of which is provided on the anode and the other on the cathode of its respective blocking diode, which system is characterized in that the two output voltage terminals of each power supply module are connected to inputs of an output voltage selection means suitable to supply a predetermined fraction (k) of the cathode voltage of its respective blocking diode when its respective blocking diode is in the conductive state, and the predetermined fraction (k) of the anode voltage of its respective blocking diode when its respective blocking diode is blocked.
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Accused Products
Abstract
The power supply modules, together feeding a load (between the terminals 13 and 12) with the voltage V0, comprise blocking diodes D1 (or D2). A feedback loop controls the output voltage (controller 14 and comparator 15 which receives Vref1 (or Vref2)). Two output voltage terminals are used for locking, on the two electrodes of D1, the voltages V1 and V0 (or D2 with the voltage V2 and V0), and are connected to inputs of output voltage selection means (31) which are suitable to supply either the voltage kV0 (k≦1) when D1 (or D2) is conductive, or the voltage kV1 =Vref1 (or kV2 =Vref2) when D1 (or D2) is blocked.
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Citations
12 Claims
- 1. A system, comprising at least two power supply modules which together feed a load with a DC supply voltage V0, are connected in a redundant configuration, and are each coupled to the load via a respective blocking diode whose cathode carries the voltage V0, each module comprising a feedback loop for its output voltage, which loop includes a voltage controller and a comparator whose positive input receives a respective reference voltage, each module also comprising, in order to realise said feedback, two output voltage terminals, one of which is provided on the anode and the other on the cathode of its respective blocking diode, which system is characterized in that the two output voltage terminals of each power supply module are connected to inputs of an output voltage selection means suitable to supply a predetermined fraction (k) of the cathode voltage of its respective blocking diode when its respective blocking diode is in the conductive state, and the predetermined fraction (k) of the anode voltage of its respective blocking diode when its respective blocking diode is blocked.
Specification