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公开(公告)号：US20200373873A1
公开(公告)日：2020-11-26
申请号：US16766235
申请日：2018-11-23
Applicant: Rolls-Royce Deutschland Ltd & Co KG
Inventor： Behnam Houshmand , Christian Loesch , Markus Sons
Abstract: The disclosure relates to a redundant electric machine for driving a propulsion means with increased operational safety. The machine may include two systems, with each system including a stator winding system and a rotor assigned thereto with permanent magnets, wherein the rotors are fastened on a common shaft for driving the propulsion means. If a fault occurs in one of the stator winding systems, the rotor, which continues to rotate, has to be prevented from inducing electric voltages in the stator winding system because this may lead to a fire in the machine. A demagnetization apparatus is therefore provided which, in a targeted manner, demagnetizes the permanent magnets of the rotor assigned to the faulty stator winding system such that the inducing of electric voltages is prevented.
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Patent Agency Ranking
公开(公告)号：US12021421B2
公开(公告)日：2024-06-25
申请号：US17059558
申请日：2019-05-29
Applicant: Rolls-Royce Deutschland Ltd & Co KG
Inventor： Christian Loesch , Markus Sons , Jens Weidauer
CPC classification number: H02K21/028 , B64C11/00 , B64D27/02 , B64D27/24 , B64D27/026 , H02K2213/06
Abstract: The electric machine includes a rotor and a stator, wherein the stator has stator coils, each with a coil core. The electric machine additionally includes an error-recovery device configured to change a magnetic flux coupling of coil cores with one another by a flux conducting element. The hybrid electric aircraft is a hybrid electric airplane, in particular, and the hybrid electric aircraft has such an electric machine.
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公开(公告)号：US11837914B2
公开(公告)日：2023-12-05
申请号：US17730164
申请日：2022-04-26
Applicant: Rolls-Royce Deutschland Ltd & Co KG
Inventor： Philipp Schildt , Markus Sons
CPC classification number: H02J9/062 , H02J7/0013 , H02J7/0024 , H02J7/0025 , H02J7/0063 , B64D27/24 , B64D2221/00 , H02J2207/20 , H02J2310/44
Abstract: An electric drive system includes at least one electric drive unit. The at least one electric drive unit includes an electric motor and inverters that are each supplied with DC voltage via a high-voltage bus. The electric drive system includes a main battery system that has a plurality of battery modules that supply DC voltage to each of the high-voltage buses. The electric device system includes a plurality of reserve batteries. A separate reserve battery is provided for each high-voltage bus. The drive system is configured to make a change to the supply of DC voltage when a corresponding control signal is present for each of the high-voltage buses. A change is made from a supply of DC voltage of the battery module of the main battery system that is assigned to the high-voltage bus to a supply of DC voltage of the reserve battery assigned to the high-voltage bus.
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公开(公告)号：US20210234445A1
公开(公告)日：2021-07-29
申请号：US17059558
申请日：2019-05-29
Applicant: Rolls-Royce Deutschland Ltd & Co KG
Inventor： Christian Loesch , Markus Sons , Jens Weidauer
Abstract: The electric machine includes a rotor and a stator, wherein the stator has stator coils, each with a coil core. The electric machine additionally includes an error-recovery device configured to change a magnetic flux coupling of coil cores with one another by a flux conducting element. The hybrid electric aircraft is a hybrid electric airplane, in particular, and the hybrid electric aircraft has such an electric machine.
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公开(公告)号：US20220344968A1
公开(公告)日：2022-10-27
申请号：US17730164
申请日：2022-04-26
Applicant: Rolls-Royce Deutschland Ltd & Co KG
Inventor： Philipp Schildt , Markus Sons
Abstract: An electric drive system includes at least one electric drive unit. The at least one electric drive unit includes an electric motor and inverters. The inverters are each supplied with DC voltage via a high-voltage bus. The electric drive system also includes a main battery system that has a plurality of battery modules that supply DC voltage to each of the high-voltage buses. The electric device system includes a plurality of reserve batteries. A separate reserve battery of the plurality of reserve batteries is provided for each high-voltage bus. The drive system is configured to make a change to the supply of DC voltage when a corresponding control signal is present for each of the high-voltage buses. A change is made from a supply of DC voltage of the battery module of the main battery system that is assigned to the high-voltage bus to a supply of DC voltage of the reserve battery assigned to the high-voltage bus. A method for supplying DC voltage of a reserve battery to a high-voltage bus is also provided.
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公开(公告)号：US11482964B2
公开(公告)日：2022-10-25
申请号：US16766235
申请日：2018-11-23
Applicant: Rolls-Royce Deutschland Ltd & Co KG
Inventor： Behnam Houshmand , Christian Loesch , Markus Sons
Abstract: The disclosure relates to a redundant electric machine for driving a propulsion means with increased operational safety. The machine may include two systems, with each system including a stator winding system and a rotor assigned thereto with permanent magnets, wherein the rotors are fastened on a common shaft for driving the propulsion means. If a fault occurs in one of the stator winding systems, the rotor, which continues to rotate, has to be prevented from inducing electric voltages in the stator winding system because this may lead to a fire in the machine. A demagnetization apparatus is therefore provided which, in a targeted manner, demagnetizes the permanent magnets of the rotor assigned to the faulty stator winding system such that the inducing of electric voltages is prevented.
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