TWO-DIRECTIONAL CURRENT DOUBLE-BOOST QUADRATIC DC/DC CONVERTER

• US 20130119966A1
• Filed: 07/29/2011
• Published: 05/16/2013
• Est. Priority Date: 07/30/2010
• Status: Active Grant

• Current Assignee: IFP Energies Nouvelles, Universite de Poitiers
• Original Assignee: IFP Energies Nouvelles, Universite de Poitiers
• Inventors: Touzani, Youssef, Kefsi, Laid, Champenois, Gerard, Gaubert, Jean-Paul
• Granted Patent: US 9,000,740 B2
• Time in Patent Office: Days
• US Class Current: 323/312
• CPC Class Codes: B60L 2210/12 Buck converters
• CPC Class Codes: B60L 2210/14 Boost converters
• CPC Class Codes: B60L 2220/42 with use of more than one motor
• CPC Class Codes: B60L 50/40 using propulsion power supplied by capacitors
• CPC Class Codes: B60L 58/20 having different nominal voltages
• CPC Class Codes: H02M 1/007 Plural converter units in cascade push-pull DC/DC converters with pre-regulator H02M3/3374; DC-AC converters following a DC-DC stage including a high frequency transformer H02M7/4807; DC-AC converters following a DC-DC conversion stage generating periodically varying voltages H02M7/4826
• CPC Class Codes: H02M 3/158 including plural semiconductor devices as final control devices for a single load
• CPC Class Codes: H02M 3/1582 Buck-boost converters H02M3/1584 takes precedence
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility

Abstract

A current reversible DC/DC double-boost quadratic converter, capable of performing high transformation ratios.

Claims

1-3. -3. (canceled)

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:

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.

5. A converter according to claim 4, in which the cyclic ratio α

is between 0.25 and 0.75.

6. A converter according to claim 4, in which switches controlled in opening and in closing are components chosen from among MOSFETs and IGBTs, with diodes installed in parallel.

7. A converter according to claim 5, in which switches controlled in opening and in closing are components chosen from among MOSFETs and IGBTs, with diodes installed in parallel.