Hybrid propulsion architecture for an aircraft comprising a motor with two reversible electric machines mounted on two shafts

An aircraft and hybrid technology, which is applied in the field of hybrid propulsion structure, can solve the problems of increased risk of device weight and unreliability, and achieve the effect of improving performance and simple characteristic structure.

Active Publication Date: 2019-12-31
SAFRAN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, controlling the different modes (including several different modes) necessary for the general operation of the engine means adding clutches to the transmissions that connect the motors to the shafts or the machines to each other, with the result that due to the control system, the Significantly increased weight of the device and risk of unreliability

Method used

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  • Hybrid propulsion architecture for an aircraft comprising a motor with two reversible electric machines mounted on two shafts
  • Hybrid propulsion architecture for an aircraft comprising a motor with two reversible electric machines mounted on two shafts
  • Hybrid propulsion architecture for an aircraft comprising a motor with two reversible electric machines mounted on two shafts

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Embodiment Construction

[0019] first of all right figure 1 and Figure 7 description of. An aircraft engine comprises, as usual, coaxial and concentric low pressure shafts 1 and high pressure shafts 2 . The aircraft engine is associated with two reversible electrical machines 3 and 4, each of which includes a stator 5 connected by cables from a power distribution network 6 to a control system 7 and through the control system to a battery or other Electric energy storage device 8. Figure 7 It is shown that the control system 7 is connected to all the electrical machines that characterize the invention, which is here advantageously applicable to each of both the engines 21 and 22 of the aircraft. The control system 7 interacts with the power electronics necessary to control the electric machines 3 and 4 . The structure can also have a turbine generator 9 which, inter alia, supplies the distribution network 6 and / or acts as an energy storage device for the battery system.

[0020] The motors 3 an...

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Abstract

The aircraft motor architecture comprises two reversible electric machines (3, 4), the rotors (10) of which are linked both to the low pressure shaft (1) and to the high pressure shaft (2) by transmissions (11, 12, 13, 14) alternately disengaged depending on the direction of rotation of the rotor (10), the transmissions comprising passive one-way clutches (15, 16, 17, 18), the engagement directions of which are opposed. Independent modes of operation of the machines, as a starter or as an electric generator of each of the shafts, are thus provided.

Description

technical field [0001] The invention relates to a hybrid propulsion structure for an aircraft comprising an engine coupled to a reversible electric machine mounted on the shaft of the engine. Background technique [0002] Hybrid propulsion architectures for modern aircraft include an engine associated with an electric machine that is connected through a power distribution grid to an electrical storage device or other electrical storage device. in addition to the necessary energy for propulsion, the engine can supply electrical energy used or stored elsewhere in the aircraft; the electric motor can also reciprocally supply the engine with support energy used on the ground and during certain phases of the mission . [0003] However, since commonly used turbines include low-pressure shafts BP and high-pressure shafts HP rotating at different speeds, and reversible power transmission may advantageously involve either of these shafts, we are led to associate each of the turbines...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64D27/24
CPCB64D27/24F02C7/32F02C7/36B64D2027/026Y02T50/60B64D31/00B64D35/00F02C6/20F05D2220/323F05D2220/76
Inventor 纳瓦尔·贾加尔法比安·德萨那德
Owner SAFRAN
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