TWO-DIRECTIONAL CURRENT DOUBLE-BOOST QUADRATIC DC/DC CONVERTER
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Abstract
A current reversible DC/DC double-boost quadratic converter, capable of performing high transformation ratios.
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Citations
7 Claims
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1-3. -3. (canceled)
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4. A current-reversible DC/DC Boost converter that will act as an interface between a first DC voltage source and a second DC voltage source, a voltage of the first DC voltage source being less than a voltage of the second DC voltage source, topology of the converter comprising the following branches:
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a first branch connecting positive poles of the first and the second DC voltage sources and comprising a first induction coil, a first switch controlled in opening and in closing, a second induction coil and a third switch controlled in opening and in closing, in series from the first to the second DC voltage sources; a second branch connecting negative poles of the first and the second DC voltage sources; a third branch, connected in parallel to the first switch and the second coil in series, comprising a diode of which an anode is on a side of the positive pole of the first voltage source; a fourth branch, connected between the second branch and a part of the first branch located between the first induction coil and the first switch, comprising a second diode an anode of which is on a side of the second branch; a fifth branch, connected between the second branch and a part of the first branch located between the first switch and the second induction coil, comprising a first capacitor; a sixth branch, connected between the second branch and a part of the first branch located between the second induction coil and the third switch, comprising a second switch controlled in opening and in closing; a seventh branch, connected in parallel on the second DC voltage source and comprising a second capacitor; the converter further comprising means for controlling switches so that; when the current in the converter circulates from the first to the second voltage source, during a control period varying from 0 to T and for a cyclic ratio α
;from time t=0 to time t=α
T, where 0<
α
<
1, the first and third switches are open and the second switch is closed,from time t=α
T to time t=T, the first and third switches are closed and the second switch is open;when the current in the converter circulates from the second to the first voltage source for a control period varying from 0 to T and for a cyclic ratio α
;from time t=0 to time t=α
T, where 0<
α
<
1, the first and third switches are closed and the second switch is open,from time t=α
T to time t=T, the first and third switches are open and the second switch is closed. - View Dependent Claims (5, 6, 7)
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Specification