MODULE FOR CONVERTING VOLTAGE BETWEEN A HIGH-VOLTAGE ELECTRICAL NETWORK OF AN AIRCRAFT AND AN ENERGY STORAGE ELEMENT

• US 20130285615A1
• Filed: 12/22/2011
• Published: 10/31/2013
• Est. Priority Date: 12/28/2010
• Status: Active Grant

• Current Assignee: Safran Landing Systems
• Original Assignee: Messier-Bugatti-Dowty, Hispano-Suiza (Safran SA), Sagem Defense Securite (Safran SA)
• Inventors: Vieillard, Sebastien, Brosson, Laurent Bernard, Karimi, Charif, Pontrucher, Marc Henri Yues
• Granted Patent: US 9,197,088 B2
• Time in Patent Office: Days
• US Class Current: 320/128
• CPC Class Codes: H02J 4/00 Circuit arrangements for mains or distribution networks not specified as ac or dc
• CPC Class Codes: H02J 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence
• CPC Class Codes: H02J 7/345 using capacitors as storage or buffering devices
• CPC Class Codes: H02M 3/1584 with a plurality of power processing stages connected in parallel

Abstract

A module converting voltage between a high-voltage electrical network and at least one energy storage element an aircraft, the conversion module configured to reversibly convert between a DC voltage of the high-voltage electrical network and a DC voltage of the energy storage element, the DC voltage of the energy storage element floating relative to the DC voltage of the high-voltage electrical network and centered relative to the mass of the aircraft, the module including an input module including two filters each capable of receiving a DC voltage, a first arm and a second arm including switches, and a mechanism controlling the switches, operating per cycle of a switching period and capable of controlling at least one first switch and at least one second switch identically but offset by a half-period, whereby the first switch is open when the second switch is closed and vice versa.

Claims

1. A module for converting voltage between a high-voltage electrical network of an aircraft, especially a high-voltage DC network, and at least one energy storage element of said aircraft, especially a super-capacitor, said conversion module being able to reversibly perform a conversion between a DC voltage E of the high-voltage electrical network of the aircraft and a DC voltage V_S of the energy storage element of the aircraft, said voltage V_S of the aircraft storage element being floating with respect to the voltage E of the high-voltage electrical network of the aircraft and centered with respect to the earth of the airplane, the module comprising an input module, comprising two filters each able to receive a DC voltage E/2, a first arm and a second arm comprising switches, and control means for said switches, the control means operating by cycle of a switching period T and being able to control at least one first switch and at least one second switch in an identical manner but shifted by a half-period T/2 so that the first switch is open when the second switch is closed and vice versa.

2. The module as claimed in claim 1, in which the control means control switches (k₁, k₁₁, k₄₄, k₄, k₃, k₃₃, k₂₂, k₂) and in which:

the input module comprises;

i. a first input terminal and a second input terminal which is linked to earth, for the application of a first voltage E/2, a first inductor Le₁ and a capacitor C₁, the inductor Le₁ and the capacitor C₁ being joined to a point with potential V_A,

ii. a third input terminal and the second input terminal which is linked to earth, for the application of a first voltage E/2, a second inductor Le₂ and a capacitor C₂, the inductor Le₂ and the capacitor C₂ being joined to a point with potential V_B, the capacitors C₁ and C₂ being joined to a point with potential V₀=0 V,

the first arm comprises four switches (k₁, k₁₁, k₄₄, k₄) and two inductors (Ls₁, Ls₁₁), the switch k₁ being situated between the point with potential V_A and a point with potential V₁, the inductor Ls₁ being situated between the point with potential V₁ and a point with potential V_C, the switch k₁₁ being situated between the point with potential V₁ and the point with potential V₀, the inductor Ls₁₁ being situated between the point with potential V₀ and a point with potential V₄, the switch k₄₄ being situated between the point with potential V₀ and the point with potential V₄, the switch k₄ being situated between the point with potential V₄ and the point with potential V_B, the control means for the switches being able simultaneously to maintain the switches k₁ and k₄ open and the switches k₁₁ and k₄₄ closed and vice versa, the voltage V_S being measured between the point with potential V_C and V₀;

the second arm comprises four switches (k₃, k₃₃, k₂₂, k₂) and two inductors (Ls₂, Ls₂₂), the switch k₃ being situated between the point with potential V_A and a point with potential V₃, the inductor Ls₂ being situated between the point with potential V_C and the point with potential V₃, the switch k₃₃ being situated between the point with potential V₃ and the point with potential V₀, the inductor Ls₂₂ being situated between the point with potential V₀ and a point with potential V₂, the switch k₂₂ being situated between the point with potential V₀ and the point with potential V₂, the switch k₂ being situated between the point with potential V₂ and the point with potential V_B, the control means for the switches being able simultaneously to maintain the switches k₁ and k₄ open and the switches k₁₁ and k₄₄ closed and vice versa, the voltage V_S being measured between the point with potential V_C and V₀, and

the control means control the switches k₁ and k₄ in an identical manner on the one hand and k₂ and k₃ in an identical manner on the other hand, the switches k₁ and k₃ being shifted by a half-period T/2 so that the switches k₁ and k₄ are open when the switches k₂ and k₃ are closed and vice versa.

3. The module as claimed in claim 1, in which the control means control switches (k₁, k₁₁, k₂₂, k₂) and in which:

the input module comprises;

i. a first input terminal and a second input terminal which is linked to earth, for the application of a first voltage E/2, a first inductor Le₁ and a capacitor C₁, the inductor Le₁ and the capacitor C₁ being joined to a point with potential V_A,

ii. a third input terminal and the second input terminal which is linked to earth, for the application of a first voltage E/2, a second inductor Le₂ and a capacitor C₂, the inductor Le₂ and the capacitor C₂ being joined to a point with potential V_B, the capacitors C₁ and C₂ being joined to a point with potential V₀=0 V,

the first arm comprises two switches (k₁, k₁₁) and an inductor Ls₁, the switch k₁ being situated between the point with potential V_A and a point with potential V₁, the inductor Ls₁ being situated between the point with potential V₁ and a point with potential V_C1, the switch k₁₁ being situated between the point with potential V₁ and the point with potential V₀, the voltage V_S being measured between the point with potential V_C1 and V₀, the control means for the switches being able simultaneously to maintain the switch k₁ open and the switch k₁₁ closed and vice versa, the voltage V_S being measured between the point with potential V_C1 and V₀;

the second arm comprises two switches (k₂, k₂₂) and an inductor Ls₂,

the switch k₂ being situated between the point with potential V₂ and the point with potential V_B, the inductor Ls₂ being situated between the point with potential V₂ and a point with potential V_C2, the switch k₂₂ being situated between the point with potential V₂ and the point with potential V₀, the control means for the switches being able simultaneously to maintain the switch k₂ open and the switch k₂₂ closed and vice versa, the voltage V_S being measured between the point with potential V_C2 and between the point with potential V₀, and

the control means control the switches k₁ and k₂ in an identical manner but shifted by a half-period T/2 so that the switch k₁ is open when the switch k₂ is closed and vice versa.

4. The module as claimed in claim 1, in which the control means control switches (k₁, k₁₁, k₄₄, k₄, k₃, k₃₃, k₂₂, k₂) and in which:

the input module comprises;

i. a first input terminal and a second input terminal which is linked to earth, for the application of a first voltage E/2, a first inductor Le₁ and a capacitor C₁, the inductor Le₁ and the capacitor C₁ being joined to a point with potential V_A,

ii. a third input terminal and the second input terminal which is linked to earth, for the application of a first voltage E/2, a second inductor Le₂ and a capacitor C₂, the inductor Le₂ and the capacitor C₂ being joined to a point with potential V_B, the capacitors C₁ and C₂ being joined to a point with potential V₀=0 V,

the first arm comprising four switches (k₁, k₁₁, k₄₄, k₄) and two inductors (Ls₁, Ls₁₁), the switch k₁ being situated between the point with potential V_A and a point with potential V₁, the inductor Ls₁ being situated between the point with potential V₁ and a point with potential V_C1, the switch k₁₁ being situated between the point with potential V₁ and the point with potential V₀, the inductor Ls₁₁ being situated between a point with potential V_C2 and a point with potential V₄, the switch k₄₄ being situated between the point with potential V₀ and the point with potential V₄, the switch k₄ being situated between the point with potential V₄ and the point with potential V_B, the control means for the switches being able simultaneously to maintain the switches k₁ and k₄ open and the switches k₁₁ and k₄₄ closed and vice versa, the voltage V_S being measured between the point with potential V_C1 and between the point with potential V₀, and between the point with potential V₀ and the point with potential V_C2;

the second arm comprising four switches (k₃, k₃₃, k₂₂, k₂) and two inductors (Ls₂, Ls₂₂), the switch k₃ being situated between the point with potential V_A and a point with potential V₃, the inductor Ls₂ being situated between the point with potential V₃ and the point with potential V_C1, the switch k₃₃ being situated between the point with potential V₃ and the point with potential V₀, the inductor Ls₂₂ being situated between the point with potential V₂ and a point with potential V_C2, the switch k₂₂ being situated between the point with potential V₀ and the point with potential V₂, the switch k₂ being situated between the point with potential V₂ and the point with potential V_B, the control means for the switches being able simultaneously to maintain the switches k₁ and k₄ open and the switches k₁₁ and k₄₄ closed and vice versa, the voltage V_S being measured between the point with potential V_C1 and between the point with potential V₀, and between the point with potential V₀ and the point with potential V_C2, and

the control means controlling the switches k₁ and k₄ in an identical manner on the one hand and k₂ and k₃ in an identical manner on the other hand, k₁ and k₃ being shifted by a half-period T/2 so that the switches k₁ and k₄ are open when the switches k₂ and k₃ are closed and vice versa.

5. The module as claimed in claim 1, in which E=270 or 540 V and 60<

V_S<

120 V.

6. A storage system comprising a conversion module as claimed in claim 1 and at least one storage element connected between the points with potential corresponding to the voltage V_S.

7. The storage system as claimed in claim 6, in which a storage element is connected between the points with potential V_C and V₀.

8. The storage system as claimed in claim 6, in which a first storage element is connected between the points with potential V_C1 and V₀ and a second storage element is connected between the points with potential V₀ and V_C2.

9. The system as claimed in claim 6, in which the storage element is a super-capacitor.

10. The system as claimed in claim 9, in which the super-capacitor is configured to store energy when an input voltage V_S is applied to it, with 60≦

V_S≦

120 V.

11. The system as claimed in claim 6, in which the storage element is a battery.

12. The system as claimed in claim 11, in which the battery is configured to store energy when an input voltage V_S is applied to it, with 60≦

V_S≦

120 V.