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1. 发明专利

JPS58172982A POWER SOURCE FOR NUCLEAR FUSION REACTOR 失效
公开(公告)号：JPS58172982A
公开(公告)日：1983-10-11
申请号：JP5343682
申请日：1982-03-31
申请人： JAPAN ATOMIC ENERGY RES INST , TOKYO SHIBAURA ELECTRIC CO
发明人： SHIMADA RIYUUICHI , MIYA NAOYUKI , AOYANAGI TETSUO , OZAKI AKIRA , TAGAMI YOSHIROU
IPC分类号： G21B1/11 , G21B1/25 , H02M9/00 , H02M11/00
摘要： PURPOSE:To eliminate the production of an abnormal voltage in a coil at the abnormally erasing time of a plasma current by detecting a voltage between the anode and the cathode of a thyristor and firing a thyristor when the voltage becomes larger than the prescribed value. CONSTITUTION:When a plasma current is abruptly decreased or erased, the current of a current transformer coil 4 decreases in the negative absolute value, and the current is intermittently flowed. Since the overvoltage which is produced in the coil 4 at this time becomes forward to the thyristor 14, this voltage is detected in a self-firing type gate circuit 15, and when it exceeds the prescribed overvoltage level, it generates a gate signal to fire the thyristor 14. Then, the coil 4 is shortcircuited, thereby preventing a high voltage from being generated between the terminals.

2. 发明专利

JPH0417519A HIGH DC VOLTAGE GENERATION APPARATUS 失效
公开(公告)号：JPH0417519A
公开(公告)日：1992-01-22
申请号：JP11856790
申请日：1990-05-10
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： MIZUNO MAKOTO , OZAKI AKIRA
IPC分类号： H05H5/02 , H02J1/02 , H02M3/28
摘要： PURPOSE:To suppress oscillation of current at the time of switching of an inverter through a simple circuitry by connecting an inductance element and a resistor element in parallel between the output terminal of the inverter and the input terminal of a rectifying transformer. CONSTITUTION:Since a commutation current i' is a high frequency current, it does not flow through the inductance element 7L in an oscillation suppressing circuit 7 but through a resistance element 7R. Since the commutation current flows through an L-C-R series circuit of a DC power supply 1, the leakage inductance 3L of a high voltage rectifying transformer 3, the stray capacitance 3C of the transformer 3, the snubber capacitors 4CV, 4CX of a diode rectifier 4, and the resistance element 7R of the oscillation suppressing circuit 7, oscillation of the commutation current can be suppressed by selecting the resistance of the resistance element 7R appropriately. Since the load current flows only through the inductance element 7L under steady state, the resistance element 7R produces no loss.

3. 发明专利

JPS63202812A PROTECTOR FOR DC BREAKER 失效
公开(公告)号：JPS63202812A
公开(公告)日：1988-08-22
申请号：JP3446187
申请日：1987-02-19
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： SHIMADA RYUICHI , OZAKI AKIRA
IPC分类号： H01H33/59

4. 发明专利

JPH01238500A POWER SOURCE 失效
公开(公告)号：JPH01238500A
公开(公告)日：1989-09-22
申请号：JP6341488
申请日：1988-03-18
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： SHIMADA RYUICHI , OZAKI AKIRA
IPC分类号： H02J1/00 , H02H7/06 , H02P9/10 , H02P9/14
摘要： PURPOSE:To prevent an overvoltage at the time of simultaneous load breakage by securing a high voltage at the time of load current rise, and thereafter suppressing the high voltage to a predetermined width. CONSTITUTION:An automatic voltage regulator 7 controls an exciter 6 so that the output voltage V of an AC generator 1 becomes equal to a rated voltage reference value V0. The output of the generator 1 is supplied to loads 5a-5c through breakers 3a-3c and DC power sources 4a-4c. On the other hand, a voltage controller 101 reduces the value V0 when the output current I of the generator 1 increases above a predetermined value. Accordingly, even if a simultaneous load breakage occur so that the voltage abruptly rises, the value of the overvoltage becomes small.

5. 发明专利

JPH04156214A HIGH VOLTAGE FEEDER 失效
公开(公告)号：JPH04156214A
公开(公告)日：1992-05-28
申请号：JP27889690
申请日：1990-10-19
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： WATANABE KAZUHIRO , MIZUNO MAKOTO , OZAKI AKIRA
IPC分类号： H02G3/22
摘要： PURPOSE:To give a radiation shielding ability and high insulating property to a high voltage feeder and, at the same time, to shield radiation without making any special construction work to the perforated section of the partition of a building by forming a labyrinth structure composed of a material having a radiation shielding ability between an inner and outer tubes. CONSTITUTION:A plurality of projections 13 made of a material having a radiation shielding ability are fitted to the external surface of an inner tube 9 in the axial direction toward an outer tube and a plurality of projections 14 made of the material having the radiation shielding ability are fitted to the internal surface of an outer tube 10 in the axial direction toward the inner tube 9. The projections 13 and 14 are fitted to the inner and outer tubes 9 and 10 so that the projections 9 and 10 can form a labyrinth structure, with the projections 13 and 14 overlapping each other at some places, when the tube 9 is put in the tube 10. Therefore, no radiation leakage occurs through a high voltage feeder, because the radiation passing through the space between the inner and outer tubes 9 and 10 is scattered, absorbed, and attenuated by means of the projections 13 and 14 respectively fitted to the tubes 9 and 10.

6. 发明专利

JPH05226097A HIGH VOLTAGE POWER SUPPLY DEVICE FOR CORPUSCULAR BEAM SOURCE 失效
公开(公告)号：JPH05226097A
公开(公告)日：1993-09-03
申请号：JP2397492
申请日：1992-02-10
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： MIZUNO MAKOTO , OZAKI AKIRA
IPC分类号： H05H5/02
摘要： PURPOSE:To function a measurement controller continuously even when a power source facility is stopped by switching an initial power receiving system into a commercial power source at the time of pausing of a power generation facility, during which the power necessary for maintaining the function is fed to the measurement controller from a power storage device. CONSTITUTION:Initial power receiving is carried out from a power source facility 9 with an initial power receiving system switcher 12 closed and an initial power receiving system switcher 13 open, at the time of driving a corpuscular beam source, while a power storage device 15 is charged. When the generation of the facility 9 is stopped following the pause of a corpuscular beam source 4, the switcher 12 is opened while the switcher 13 is closed before pausing the generation of the facility 9, and an initial power receiving system 14 is switched from the facility 9 into a commercial power source 11, and the generation of the facility 9 is paused thereafter. Power is fed from the power storage device 15 during the pause of the facility 9.

7. 发明专利

JPS63202220A DC SOURCE 失效
公开(公告)号：JPS63202220A
公开(公告)日：1988-08-22
申请号：JP3489487
申请日：1987-02-18
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： SHIMADA RYUICHI , AOYANAGI TETSUO , MATSUKAWA MAKOTO , OZAKI AKIRA
IPC分类号： H02M7/155 , G05F1/10 , H02J1/00 , H02M1/32 , H02M7/12

8. 发明专利

JPS5674035A ARC POWER SOURCE 失效
公开(公告)号：JPS5674035A
公开(公告)日：1981-06-19
申请号：JP15070879
申请日：1979-11-22
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： OZAKI AKIRA , HIGA OSAMU
IPC分类号： H02J1/00 , H05H1/22

9. 发明专利

JPS5791672A PROTECTIVE DEVICE FOR THYRISTOR CONVERTER 失效
公开(公告)号：JPS5791672A
公开(公告)日：1982-06-07
申请号：JP16531280
申请日：1980-11-26
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： OZAKI AKIRA , KITAHARA TADAYUKI , MATSUSHITA TETSUSHI
IPC分类号： H02M1/00 , H02M7/12 , H02M7/155 , H02M7/162
摘要： PURPOSE:To enable to absorb overvoltage into a surge absorbing circuit by a method wherein a forward direction overvoltage detection circuit is provided on each arm of a transformer respectively and the thyristor of each arm is turned on. CONSTITUTION:A DC-side surge absorbing circuit 14 is rovided in parallel with a load 12 and at the same time, forward direction overvoltage detecting circuit 15-20 are provided on a thydristor arms U-Z respectively. When the polarity of the overvoltage is a backward overvoltage to thyristors U and Y, it is turned to forward direction overvoltage to thyristors V and X without fail. Accordingly, the forward overvoltage of the thyristors V and X is detected by forward direction overvoltage detecting circuits 16 and 18, the thysrisors V and X are turned on by a gate pulse generating circuit 11, andthe oervoltage is absorbed by a surge absorbing circuit 14.

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