摘要:
A magnetizing device for superconductor and a superconducting synchronous machine are provided capable of constituting more compact and simple equipment that uses a superconductor as a magnet. The magnetizing device for superconductor includes a superconductor (131); a coolant chamber (142) for cooling the superconductor (131) down to or below a critical temperature at which the transition to a superconducting state occurs; coils (111, 111′) for generating a magnetic field equal to or higher than a critical magnetic field in which the intrusion of a magnetic flux into the superconductor (131) starts, around the superconductor (131) cooled down to or below the critical temperature at which the transition to the superconducting state occurs; and position modification means capable of arranging the superconductor (131) on a disk (120) and modifying the relative positional relationship with the coils (111, 111′).
摘要:
A magnetizing device for superconductor and a superconducting synchronous machine are provided capable of constituting more compact and simple equipment that uses a superconductor as a magnet. The magnetizing device for superconductor includes a superconductor (131); a coolant chamber (142) for cooling the superconductor (131) down to or below a critical temperature at which the transition to a superconducting state occurs; coils (111, 111′) for generating a magnetic field equal to or higher than a critical magnetic field in which the intrusion of a magnetic flux into the superconductor (131) starts, around the superconductor (131) cooled down to or below the critical temperature at which the transition to the superconducting state occurs; and position modification means capable of arranging the superconductor (131) on a disk (120) and modifying the relative positional relationship with the coils (111, 111′).
摘要:
A joint includes a housing and a refrigerant tube connected to a refrigerant source and communicated with a target part in a rotating machine. A rotating member is loosely fitted inside with the refrigerant tube and fixed to a rotary part of the rotating machine. A relatively rotating member has a fixed-side member and rotating-side member. The fixed-side member is connected to the refrigerant tube via a refrigerant tube extension section. The rotating-side member is connected to the rotating member via a rotating member extension section. A refrigerant zone is formed by spaces defined between the refrigerant tube and the rotating member, and between the refrigerant tube and rotating member extension sections. A sealing member is installed between the fixed-side and rotating-side members. A vacuum chamber and pressure chamber are defined within the housing.
摘要:
Problem to be SolvedTo provide a small, lightweight, cryo-rotary joint.SolutionA joint includes a housing 2, a refrigerant tube 3 connected to a refrigerant source and communicated with a target part in a rotating machine, a rotating member 4 loosely fitted inside with the refrigerant tube and fixed to a rotary part of the rotating machine, and a relatively rotating member 5 having a fixed-side member 5a and rotating-side member 5b, wherein the fixed-side member is connected to the refrigerant tube via a refrigerant tube extension section 3a, the rotating-side member is connected to the rotating member via a rotating member extension section 4a, a refrigerant zone is formed by spaces 7 and 8 defined by the refrigerant tube, rotating member, and refrigerant tube and rotating member extension sections, a sealing member 10 is installed between the fixed-side and rotating-side members, and a vacuum chamber and pressure chamber are defined within the housing.
摘要:
The inventive Langmuir-Blodgett film is made of an amphiphilic organic carboxylic acid, such as a long chain fatty acid, and a tetrathiafulvalene derivative having no long chain alkyl group. For example, the long chain fatty acid comprises behenic acid, and the tetrathiafulvalene derivative comprises 4,5-ethylenedioxy-4',5'-ethylenedithio-tetrathiafulvalene or bis-ethylenedioxy-tetrathiafulvalene. Such Langmuir-Blodgett film comprises uniform and well-ordered layered structure, may be readily produced and may exhibit a high electrical conductivity.
摘要:
The present invention provides a superconductive rotating electric machine drive control system that has higher efficiency and is smaller size and lighter in weight than conventional systems, and also provides a superconductive rotating electric machine drive control method to be implemented in the superconductive rotating electric machine drive control system. By the superconductive rotating electric machine drive control system and the superconductive rotating electric machine drive control method in accordance with the present invention, a control operation is performed so that the field current If2 applied to the superconductive field winding of the synchronous rotating electric machine satisfies an equation for the field current If2 in accordance with the variation of the electric power exchanged between the synchronous rotating electric machine and the power unit.
摘要:
The present invention provides a superconductive rotating electric machine drive control system that has higher efficiency and is smaller size and lighter in weight than conventional systems, and also provides a superconductive rotating electric machine drive control method to be implemented in the superconductive rotating electric machine drive control system. By the superconductive rotating electric machine drive control system and the superconductive rotating electric machine drive control method in accordance with the present invention, a control operation is performed so that the field current If2 applied to the superconductive field winding of the synchronous rotating electric machine satisfies the following equation (11) in accordance with the variation of the electric power exchanged between the synchronous rotating electric machine and the power unit: If2=E2/k4n2ν=√{square root over ((Vt cos θ−r2I)2+(Vt sin θ−x2I)2)}{square root over ((Vt cos θ−r2I)2+(Vt sin θ−x2I)2)}/k4n2ν (11) where If2 represents the field current applied to the superconductive field winding the synchronous rotating electric machine, I represents the line current, E2 represents the induced electromotive force of the synchronous rotating electric machine, Vt represents the terminal voltage, k4 represents the constant, n2 represents the number of winding wires in the superconductive field winding, ν represents the rotation speed of the synchronous rotating electric machine, θ represents the power factor angle, r2 represents the resistance of the synchronous rotating electric machine, and χ2 represent the reactance of the synchronous rotating electric machine.
摘要:
A detector of near-infrared light includes a light receiving device having a perovskite-type composite oxide expressed by a general formula of La1-xPrxCrO3 (where 0