Method and architecture for processing electrical energy regenerated from an aircraft

• US 9,467,077 B2
• Filed: 11/22/2011
• Issued: 10/11/2016
• Est. Priority Date: 11/23/2010
• Status: Active Grant

• Current Assignee: Safran Electrical & Power
• Original Assignee: Labinal Power Systems
• Inventors: Rambaud, Julien, Vieillard, Sebastien
• Primary Examiner(s): Barnie, Rexford
• Assistant Examiner(s): Mourad, Rasem
• Application Number:
  US13/885,103
• Publication Number:
  US 20130229053A1
• Time in Patent Office: 1,785 Days
• Field of Search: 307/9.1, 307/10.1
• US Class Current: 1/1
• CPC Class Codes: B60L 7/20 Braking by supplying regenerated power to the prime mover of vehicles comprising engine-driven generators
• CPC Class Codes: B60R 16/0307 using generators driven by a machine different from the vehicle motor
• CPC Class Codes: H02P 3/14 by regenerative braking
• CPC Class Codes: H02P 3/18 for stopping or slowing an ac motor
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/92 Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

Abstract

A method and architecture processing electrical energy regenerated from an aircraft, to address drawbacks posed by customary solutions for dissipating low energy of resistors, conventionally ceramics, which require a significant volume of ceramic and an additional power converter. The method and architecture return energy to an electric generator to convert the energy into mechanical energy. The architecture includes a reversible electric generator, driven by a thermal machine and configured to deliver an AC voltage, electric actuators, and a voltage converter circuit with multiple links. The circuit includes AC voltage rectifiers for voltage originating from the generator and power converters arranged on the multiple links to drive as many electric actuators. The converter circuit also includes a mechanism for electrical energy inverse transmission applied to the generator operating in a motor mode.

Claims

1. A processing method for energy regenerated by reversible electrical actuators of an aircraft, the aircraft comprising:

a generator driven by a thermal machine;

a voltage converting multi-way circuit;

a plurality of actuators; and

corresponding links that connect each actuator to the voltage converting multi-way circuit;

wherein;

the generator operates to generate power in a nominal mode;

the generator supplies power via the voltage converting multi-way circuit to the actuators;

the actuators operate in one of two operating modes, including;

a motive mode that consumes energy; and

an electrical energy generating mode that regenerates energy;

wherein the method comprises the steps of;

operating a first set of actuators in the generating mode to produce regenerated energy and supplying the regenerated energy through the corresponding links;

operating a second set of actuators in the motive mode;

transmitting regenerated energy to the generator through a reverse energy transmission from the first set of actuators through a dedicated link between the first set of actuators and the generator; and

converting the transmitted energy into mechanical energy by the thermal machine via the generator.

2. The processing method according to claim 1, wherein the voltage converting multi-way circuit is dedicated either to a taxiing function of an aircraft on the ground or to a starting function for the thermal machine.

3. The processing method according to claim 2, wherein the mechanical energy produced by the generator in the motive mode is supplied to at least one of the thermal machine and an equipment of the aircraft configured to operate via a power transfer mechanical adaptation means.

4. An architecture, comprising:

a generator driven by a thermal machine and configured to deliver an alternative voltage;

a voltage converting multi-way circuit comprising voltage rectifying means configured to convert the alternative voltage into a direct voltage, and power converters arranged on corresponding links, supplied by the direct voltage emitted by the rectifying means and configured to pilot a plurality of actuators;

connecting means, mounted in bypass on at least one corresponding link of at least one power converter, configured to allow the generator to be piloted via a busbar to form reverse energy transmission means from the power converters, a direct voltage bus and the other converters that, being not bypassed, are energy suppliers; and

the corresponding links connect each actuator to the voltage converting multi-way circuit,

wherein;

the generator operates to generate power in a nominal mode;

the generator supplies power via the voltage converting multi-way circuit to the actuators;

the actuators operate in one of two operating modes, including;

a motive mode that consumes energy; and

an electrical energy generating mode that regenerates energy; and

wherein;

a first set of actuators is operated in the generating mode to produce regenerated energy and supplying the regenerated energy through the corresponding links;

a second set of actuators is operated in the motive mode;

regenerated energy is transmitted to the generator through a reverse energy transmission from the first set of actuators through a dedicated link between the first set of actuators and the generator; and

the transmitted energy is converted into mechanical energy by the thermal machine via the generator.

5. The architecture according to claim 4, wherein the rectifying means includes at least one rectifier or one converter.

6. The architecture according to claim 4, wherein the electrical energy is supplied by a direct voltage source so as to supply the thermal machine in a starting mode via the generator.

7. The architecture according to claim 6, wherein the direct voltage source is a low voltage source connected to the connecting means through an over-supplying inductor, or by a battery or a three-phase voltage source transmitted by a ground plug and converted into a direct voltage by a rectifier.

8. The architecture according to claim 4, wherein the thermal machine is an auxiliary power unit or equivalent dedicated to starting of main engines of the aircraft and to substitution of the main engines in a case of a failure.