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11. 发明专利

JPH03107349A HYDROGEN GAS PRESSURE REGULATOR 失效
公开(公告)号：JPH03107349A
公开(公告)日：1991-05-07
申请号：JP24352889
申请日：1989-09-21
申请人： TOSHIBA CORP
发明人： NAGAMURA HIDEHIRO
IPC分类号： H02K9/08 , H02K9/24
摘要： PURPOSE:To cut off a deteriorated case from a hydrogen gas circulation system without stopping a rotating machine so as to achieve on-line maintenance by arranging plural hydrogen storage alloy storing cases, which have deterioration detectors, in parallel, and providing automatic opening and closing valves in piping, and then opening and closing them based on the deterioration judgement signals from the deterioration detectors. CONSTITUTION:When the hydrogen storage alloy in a case 2n deteriorates, a deterioration detecting and judging device 7-n transmits a deterioration judgement instruction A-n, so valves 6a-n and 6b-n are closed automatically. The case 2-n, which is storing the deteriorated hydrogen storage alloy, is cut off from the hydrogen circulation system. The regulation of hydrogen gas pressure is done by the hydrogen storage ally stored in a remaining normal case. The deterioration detecting and judging device 7-n is composed of a sensor, which measures the state quantity (resistance value and conductivity) concerning the electric resistance of hydrogen storage alloy, and a control circuit.

12. 发明专利

JPH025703A BOILER/TURBINE COOPERATED CONTROL DEVICE 失效
公开(公告)号：JPH025703A
公开(公告)日：1990-01-10
申请号：JP15218788
申请日：1988-06-22
申请人： TOSHIBA CORP
发明人： NAGAMURA HIDEHIRO
IPC分类号： F01D17/00 , F01K13/02 , F22B35/00
摘要： PURPOSE:To make it possible to variably control main steam pressure smoothly and stably by previously adding CV opening signal as a bias signal to a flow control signal for controlling fuel and air quantity supplied to a boiler. CONSTITUTION:MSP deviation signal 29 receives CV opening command signal 23 before CV control unit 9 and it is previously added in an adder 24 as a bias signal 26. Thus, larger deviation volume is added to MSP deviation signal 29 so that it becomes possible to previously detect the change of excessive increase and decrease of MSP corresponding earlier to increase and decrease of CV opening by CV control unit 9. Accordingly, excessive change of MSP can be prevented so that stable changing pressure operation and constant operation can be usually continued.

13. 发明专利

JPH01231630A ELECTRIC POWER SYSTEM APPARATUS 失效
公开(公告)号：JPH01231630A
公开(公告)日：1989-09-14
申请号：JP5370388
申请日：1988-03-09
申请人： TOSHIBA CORP
发明人： NAGAMURA HIDEHIRO
IPC分类号： H01L39/14 , H02J15/00
摘要： PURPOSE:To reduce the frequency of fine adjustment of generator output, by arranging a branched superconduction energy storing device on the side of generator output winding of a main transformer. CONSTITUTION:When it is necessary to supply P02 from 8:00 AM, a converter 5 is turned ON while a flywheel switch 7 is turned OFF to feed superconductive coil current Id through a path A to the converter 5. Since the converter 5 is producing a negative voltage Ed2, power P02 is fed through a converter transformer 4 to the system bus side 10 thus feeding total power of PC1-PCmm. When the power demand is reversed from 8:00 PM and an excessive power P01 is produced, the output voltage of the converter 5 is set to a positive level Ed1 thus recovering the excessive power P01 to a superconduction energy storing device 3. When the excessive power P01 is absent, the converter 5 is turned OFF while the flywheel switch 7 is turned ON thus storing the energy in the form of electromagnetic energy. Consequently, the superconduction energy storing device can be used to reduce the frequency of fine adjustment of generator output.

14. 发明专利

JPH01177839A SUPERCONDUCTING ENERGY STORAGE SYSTEM 失效
公开(公告)号：JPH01177839A
公开(公告)日：1989-07-14
申请号：JP54588
申请日：1988-01-05
申请人： TOSHIBA CORP
发明人： NAGAMURA HIDEHIRO
IPC分类号： H02J15/00
摘要： PURPOSE:To obtain a system in which power loss is suppressed to a remarkably small value by providing a switch in series with a superconductor for forming a DC closing circuit at the time of storing energy, and operating to open or close the switch at the time of switching normal conduction/superconduction. CONSTITUTION:A system for forming a DC closing circuit by connecting superconducting coil 5 and a superconducting conductor 3 in series with the DC side of an AC/DC converter 1, and switching the conductor 3 to a superconducting state at the time of storing energy, a switch 2 is provided in series with the conductor 3. The switch 2 is closed immediately before the conductor 3 is switched to the superconducting state, and the switch 2 is opened immediately after the conductor 3 is switched to a normal conducting state. Thus, a large current circuit can be opened or closed even by the switch 2 having a small rated value, and power loss at the conductor 3 can be suppressed.

15. 发明专利

JPH01174224A ACTIVE FILTER FOR DC POWER SUPPLY DEVICE 失效
公开(公告)号：JPH01174224A
公开(公告)日：1989-07-10
申请号：JP32877787
申请日：1987-12-25
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： MATSUOKA MAMORU , NAGAMURA HIDEHIRO
IPC分类号： H02J3/00
摘要： PURPOSE:To avoid ripple component and adjust energy resistivity at the time of the discharge destruction of a load, by connecting a capacitive element with polarities reversed to each other, to both the ends of the output lines of two sets of DC chopper units. CONSTITUTION:When current is permitted to flow to DC chopper units 10, 11, and to a capacitive element 12 with polarities reversed to each other, then charge voltage is applied to an inductive element 4 and a leakage reactance 14. In this case, the DC chopper units 10, 11 are controlled to be synchronized with the ripple voltage of a DC power supply device 1 so that voltage time integrating values with opposite phases and half waves may be made equal to each other. Because of the pure resistance of a load 5, the ripple voltage is cancelled, and ripple component generated from the DC power supply device 1 is avoided. In the meantime, when discharge destruction is generated on the load 5, then by the working of the DC chopper units 10, 11, conductive current Ib flows reversed to the charge voltage of the capacitive element 12 and is gradually attenuated to come to zero. In this process, the electromagnetic energy of the inductive element 4 and the leakage reactance 14 of a rectifier transformer 1a is absorbed to the capacitive element 12 as electrostatic energy to be stored.

16. 发明专利

JPH07333282A DETECTING DEVICE OF GROUND FAULT OF VVVF SYSTEM 失效
公开(公告)号：JPH07333282A
公开(公告)日：1995-12-22
申请号：JP15176194
申请日：1994-06-10
申请人： TOSHIBA CORP
发明人： NAGAMURA HIDEHIRO
IPC分类号： G01R31/02 , H02H7/08 , H02H7/122 , H02M7/48 , H02P1/30 , H02P27/06 , H02P7/63
摘要： PURPOSE:To obtain a detecting device of a ground fault of a VVVF system which enables detection of an accident of the ground fault even in a low-frequency area without changing sharply a controlling system of an existing drive motor and which has few components and is simple. CONSTITUTION:This detecting device is equipped with a transformer 18 for a grounded type instrument which is connected to an electric circuit of the secondary side of an output transformer connected to a drive motor of a VVVF system for operating a rotary machine and in a tertiary winding of which a zero-phase voltage is generated when an accident of a ground fault occurs, and with a limiting resistor 20 on which the zero-phase voltage generated in the tertiary winding of the transformer 18 for the grounded type instrument is impressed. Moreover, it is equipped with a zero-phase voltage detector 21 which detects the zero-phase voltage on the basis of the value of a current flowing through the limiting resistor 20 and with a ground fault detector 19 which determines the accident of the ground fault as occurring, when the zero-phase voltage detected by the zero-phase voltage detector 21 is the value of a starting zero- phase voltage or above which is generated when the accident of the ground fault occurs in the course of a starting frequency operation of the drive motor.

17. 发明专利

JPH0538054A PHASE MODIFIER 失效
公开(公告)号：JPH0538054A
公开(公告)日：1993-02-12
申请号：JP19422591
申请日：1991-08-02
申请人： TOSHIBA CORP
发明人： NAGAMURA HIDEHIRO
IPC分类号： H02J3/18 , B28D5/04
摘要： PURPOSE:To prevent lowering of efficiency due to power loss and to reduce installation space by eliminating the drive motor conventionally employed for starting a synchronous phase modifier. CONSTITUTION:When a power converter 11 produces AC three-phase power, a rotating field is induced in the primary windings 6a, 6b, 6c of an AC exciter to cause rotation of the rotary side, i.e., the secondary winding 3, of the AC exciter. Consequently, a synchronous phase modifier 1 coupled therewith is started. When the synchronous phase modifier 1 reaches a synchronous speed, a circuit breaker 10 is thrown in to conduct only semiconductor elements 8a, 8e, 8f and thereby DC power is outputted from the power converter 11. At that time a nonrotating field is induced in the primary windings 6a, 6b, 6c but since the secondary winding 3 is rotating, an AC voltage is produced and a field current flows through a rectifier 4 into the field winding 5. Consequently, the synchronous phase modifier 1 can feeds the system with reactive power.

18. 发明专利

JPH02311139A HYDROGEN-GAS PRESSURE REGULATOR FOR HYDROGEN-COOLED ROTARY ELECTRIC MACHINE 失效
公开(公告)号：JPH02311139A
公开(公告)日：1990-12-26
申请号：JP13001989
申请日：1989-05-25
申请人： TOSHIBA CORP
发明人： NAGANO RYOJI , NAGAMURA HIDEHIRO , KOBAYASHI YOSHIO , SHIROTA ATSUKO
IPC分类号： H02K9/08 , H02K9/24
摘要： PURPOSE:To enable maintenance and safety operation on an on-line by regulating hydrogen-gas pressure in a hydrogen-cooled rotary electric machine in response to load fluctuation by using a hydrogen-reserve alloy. CONSTITUTION:Hydrogen-gas pressure in the housing case 2-1 of a hydrogen- reserve alloy and hydrogen gas pressure in a hydrogen-reserve alloy housing case 102 for a sample are monitored periodically by a deterioration detecting deciding device 12, thus easily detecting the deterioration of the hydrogen-reserve alloy. The hydrogen reserve alloy, a lifetime of which is decided to expire by deciding the deterioration of the hydrogen-reserve alloy, is detached automatically from a hydrogen-gas circulation system. An other case 2-2-2-n system in which the previously mounted hydrogen-reserve alloy is housed is utilized automatically. The hydrogen-reserve alloy as content is replaced with new one in the detached hydrogen-reserve alloy housing case 2-1 and the housing case 2-1 is connected again for spare, and the housing case 2-1 is used as the hydrogen-gas pressure regulator of a hydrogen-cooled rotary electric machine 1.

19. 发明专利

JPH01126139A SUPERCONDUCTIVE ENERGY STORAGE APPARATUS 失效
公开(公告)号：JPH01126139A
公开(公告)日：1989-05-18
申请号：JP28100587
申请日：1987-11-09
申请人： TOSHIBA CORP
发明人： NAGAMURA HIDEHIRO
IPC分类号： H01F6/00 , H01L39/14 , H02J15/00
摘要： PURPOSE:To obtain a small-scale superconductive energy storage apparatus dissipating no heat in the environment, by connecting a series connector of a switch and a device for converting electrical energy into electrochemical energy in parallel with a superconducting coil. CONSTITUTION:A switch 2 and a device 4 for converting electrical energy into electrochemical energy (for example, lithium electrolytic device) are connected in parallel with a superconducting coil 3 connected with a power supply 1. Normally, said switch 2 is opened and stores energy in said superconducting coil 3 or takes it out therefrom via said power supply 1. When the superconducting coil 3 is likely to be quenched, the power supply 1 is blocked, the switch 2 is closed, and an electromagnetic energy stored in the superconducting coil 3 is treated as electrochemical energy by the device 4.

20. 发明专利

JPS63202897A HIGH VOLTAGE DC SOURCE 失效
公开(公告)号：JPS63202897A
公开(公告)日：1988-08-22
申请号：JP3489587
申请日：1987-02-18
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： MATSUOKA MAMORU , NAGAMURA HIDEHIRO
IPC分类号： H05H1/22 , H02J1/00 , H02M9/00 , H05H3/02 , H05H5/02

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