Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2006-05-16
2006-05-16
Nguyen, Matthew V. (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S021010
Reexamination Certificate
active
07046524
ABSTRACT:
The invention relates to a power supply device having several switch-mode power supplies connected in parallel to supply at least one consuming unit, each switch-mode power supply generating an output current I0and an output voltage U0(I0, RL) that is a function of the output current I0and a load resistance RL, and having a control device for each switch-mode power supply, the control device having a first stage with a P element (54) that receives a P element input voltage which is derived from the output voltage U0(I0, RL), and generates a P element control voltage UVS, that is used to control the respective switch-mode power supply, the first stage being active when 0≦I0≦I0P, a second stage having a current reproduction circuit which reproduces the output current I0of the respective switch-mode power supply and generates an output current control voltage UPwhich is used to control the respective switch-mode power supply, the second stage being active when I0P≦I0≦I0S, and a third stage having an amplifier circuit which amplifies a signal proportional to the output current I0and generates an amplified output current control voltage m·USwhich is used to control the respective switch-mode power supply, the third stage being active when I0S≦I0≦IK.
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Hoffman Hans
Rathmann Robert
Wiesmueller David
Minebea Co. Ltd.
Nguyen Matthew V.
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