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1. 发明专利

JPH0880044A RECTIFIER FOR HIGH VOLTAGE 失效
公开(公告)号：JPH0880044A
公开(公告)日：1996-03-22
申请号：JP21472394
申请日：1994-09-08
申请人： KANSAI ELECTRIC POWER CO , SHIKOKU ELEC POWER , ELECTRIC POWER DEV CO , TOSHIBA CORP , MITSUBISHI ELECTRIC CORP
发明人： ASANO KATSUNORI , YAMAJI KOJI , IROKAWA HIROYUKI , IMURA MASAYUKI , OTEGI HIROICHI , TERAMOTO HITOSHI , ASADA MASATAKA , YAMAMOTO YOSHIHIKO
IPC分类号： H02M7/04 , H02M7/12
摘要： PURPOSE: To optimize the arrangement of commutator modules by separating and disposing each of commutator module bodies and a frame in response to potential difference among each of the commutator module bodies and the frame. CONSTITUTION: When one module group is composed of two modules and one arm is constituted of four module groups, two module groups are arrayed at every one module group in a front row and a rear row while the module group in the front row is arranged while forming a stepped section at a place lower than the module group in the rear row by Δ. The residual two module groups are arranged similarly and the module groups are disposed between a pair of frames under the state of superposition at two stages at fixed distances to the module groups while the module groups are superposed at four stages and a section corresponding to one phase of a valve is constituted. Consequently, since a space between a pair of the frames can be reduced by ΔG, height can be lowered by 4ΔG as a whole when the module groups are laminated at four stages, but the mechanical strength of the valve is most subject to the effect of bending stress, and bending stress is proportional to height. Accordingly, mechanical strength is increased with the reduction of the height of the valve.

2. 发明专利

JPS61167375A COOLER OF AC/DC CONVERTER 失效
公开(公告)号：JPS61167375A
公开(公告)日：1986-07-29
申请号：JP721085
申请日：1985-01-18
申请人： KANSAI ELECTRIC POWER CO , MITSUBISHI ELECTRIC CORP
发明人： ABE YOICHIRO , HASEGAWA KIYOSHI , NISHIO ISAO , OTEGI HIROICHI
IPC分类号： H05K7/20 , H02M7/04
摘要： PURPOSE:To enhance the economy of an AC/DC converter by providing a plurality of coolers and blowers, detecting the temperature of the maximum temperature section in the converter to control to operate the coolers and the blowers in response to the detection signal, thereby reducing the less of auxiliary machines of a cooling system device. CONSTITUTION:When cooling air is flowed into a grounded vessel 2 for stacking and containing a plurality of AC/DC converters 1 to cool the converters 1. a plurality of coolers 3a, 3b and blowers 4a, 4b are provided in a cooling system. A temperature detector 8 is mounted at the section which becomes the maximum temperature of the converters 1, its detection signal is converted into a light signal, and transmitted through an optical fiber 11. The detection signal is converted by a converter 10 into an electric signal, fed to a temperature regulator 12 to control the operation/stop of the coolers 3a, 3b or 4a, 4b in response to the detected temperature.

3. 发明专利

JP2001178148A PROTECTOR FOR SELF-EXCITED CONVERTER 失效
公开(公告)号：JP2001178148A
公开(公告)日：2001-06-29
申请号：JP35763099
申请日：1999-12-16
申请人： MITSUBISHI ELECTRIC CORP
发明人： OTEGI HIROICHI
IPC分类号： H02H7/122 , H02J1/00 , H02J3/36 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To obtain a highly reliable protector for a self-excited converter, in which a fault current discharged from a DC capacitor and a fault current supplied from an AC system can be interrupted even in case of a fault in a DC circuit in the vicinity of the DC capacitor or a converter. SOLUTION: A self-extinguishing thyristor 30 and a diode 31 constituting a switch 29 are provided in series with a DC capacitor 14 and the switch 29 is controlled to open by detecting a fault current 33 discharged from the DC capacitor 14 in case of a fault in a DC circuit. An overcurrent relay 35 is provided on the DC side winding of a linkage transformer 19 and a main circuit breaker 20 is controlled to open by detecting a fault current 34 supplied from an AC system upon occurrence of a fault in the DC circuit.

4. 发明专利

JPH0453283A MAGNETIC PULSE COMPRESSION CIRCUIT AND MAGNETISM RESETTING METHOD OF MAGNETIC PULSE COMPRESSION SATURABLE REACTOR 失效
公开(公告)号：JPH0453283A
公开(公告)日：1992-02-20
申请号：JP16121390
申请日：1990-06-21
申请人： MITSUBISHI ELECTRIC CORP
发明人： OTEGI HIROICHI
IPC分类号： H01S3/097 , H02M9/04
摘要： PURPOSE:To obtain an MPC circuit where a saturable reactor is simple in structure by a method wherein at least an air-core reactor is connected to a saturable reactor in parallel or series. CONSTITUTION:In a magnetic pulse compression circuit which is formed of a close loop composed of a saturable reactor 1A and a pair of capacitors 6 and 7 and compresses a supplied pulse into a pulse provided with a sharper leading edge, at least an air-core reactor 14 is connected to the saturable reactor 1A in parallel or series. The electric energy of the fed pulses is partially injected into the air-core reactor 14, and a core 3 in the magnetic pulse compression saturable reactor 1A is reset in magnetization through the electric energy emitted from the air-core reactor 14 just after the compression of pulses to return to the magnetized state in which it was before pulses were compressed. By this constitute, the MPC saturable reactor 1A can be magnetically reset without providing a reverse magnetic flux generating power supply and a reverse magnetic flux generating winding coil.

5. 发明专利

JPS60123804A FIXING DEVICE FOR LIGHT GUIDE 失效
公开(公告)号：JPS60123804A
公开(公告)日：1985-07-02
申请号：JP23297683
申请日：1983-12-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： OTEGI HIROICHI , TAKEYASU KAZUHISA
IPC分类号： G02B6/00 , G02B6/44
摘要： PURPOSE:To obtain a device capable of holding a press-contacting state invariably according to the shrinkage and expansion of a light quide by allowing one tubular support to move through a spring. CONSTITUTION:A semicircular holder 4 fixed on a rack 1 with a bolt 2 is coupled with a semitubular holder 5 with a bolt 7 and a nut 8 through a spring 9 and a washer 10. Plural light guides 6 are held in a press-contacting state by a fixed holder 4 and a movable holder 5. Even when the light guide 6 shrink or expand with ambient temperature, the spring 9 shrinks or expands according to that, so variation in press-contacting force between the fixed holding part 4 and movable fixing part 5 is supplied to hold the light guides 6 without any damage to the light guides 6.

6. 发明专利

JPH0683035B2 失效
公开(公告)号：JPH0683035B2
公开(公告)日：1994-10-19
申请号：JP31546189
申请日：1989-12-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： OTEGI HIROICHI
IPC分类号： H01S3/097 , H02M9/06 , H03K3/53

7. 发明专利

JPH03177108A PULSE GENERATOR 失效
公开(公告)号：JPH03177108A
公开(公告)日：1991-08-01
申请号：JP31546189
申请日：1989-12-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： OTEGI HIROICHI
IPC分类号： H01S3/097 , H02M9/06 , H03K3/53
摘要： PURPOSE:To improve efficiency by providing a satuable reactor for reverse current prevention having the voltage-time product of large enough to prevent saturation while the pulse compression of a first stage is executed. CONSTITUTION:One end of the satuable reactor 12 for reverse current prevention is connected to a capacitor 3 for charging at its one end, and the other end is connected to the junction point of the capacitor 4 for compression and the satuable reactor 8. Since this satuable reactor 12 for reverse current prevention becomes high impedance in a non-saturated state for a period that the pulse compression of the first stage is executed, it prevents a pulse current from flowing in a reverse direction. Thus, a pulse current in the reverse direction is prevented from flowing after time when the pulse compression of the first stage is executed, and the pulse generation device of high efficiency can be obtained.

8. 发明专利

JPS6423776A HIGH TENSION PULSE GENERATOR 失效
公开(公告)号：JPS6423776A
公开(公告)日：1989-01-26
申请号：JP17935287
申请日：1987-07-16
申请人： MITSUBISHI ELECTRIC CORP
发明人： OTEGI HIROICHI , YASUDA MASARU
IPC分类号： H02M9/04
摘要： PURPOSE:To reduce component parts and simplify the wiring of a main circuit, by realizing the forming of pulse voltage equal to or higher than line voltage, with a capacitor, an inversion means, and a saturable reactor. CONSTITUTION:To a first capacitor 4 connected to a DC power source 1, a thyratron 2 as an inversion means is connected in parallel with each other. To both ends of the first capacitor 4, a saturable reactor 6 and a second capacitor 8 are connected in series. When the first and second capacitors 4, 8 are charged with specified voltage by the DC power source 1, to allow the thyratron 2 to turn ON, then the voltage polarity of the first capacitor 4 is inverted, and at the time when the inversion comes to an end, the saturable reactor 6 is saturated to allow the electrical energy of the first capacitor 4 to shift to the second capacitor 8, and the second capacitor 8 is charged with voltage higher than specified voltage. To the second capacitor 8, a pair of main discharge electrodes 9 are connected in parallel with each other.

9. 发明专利

JPS60123810A FIXING DEVICE FOR LIGHT GUIDE 失效
公开(公告)号：JPS60123810A
公开(公告)日：1985-07-02
申请号：JP23297783
申请日：1983-12-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： YOSHIOKA AKIYOSHI , OTEGI HIROICHI
IPC分类号： G02B6/24 , G02B6/36 , G02B6/44 , H02G11/00
摘要： PURPOSE:To receive a load uniformly by supports of respective stages and to eliminate the load on the connection part between a light guide and an electric device by supporting and fixing a bundle of light guides zigzag. CONSTITUTION:Pipe type supports 2 which support bundled light guides 1 are arranged zigzag at respective stages of a rack 4 to support the light guides zigzag longitudinally. Thus, the supports are arranged to reduce the own weight of the bundle of the light guides in the gravitational direction and prevent the bundle from falling from the supports easily, and consequently the load on the connection part between the light guides and electric device is prevented from increasing. Further, flexural guide parts for the light guides may be formed by curving the supports 2.

10. 发明专利

JP2000197366A DC POWER TRANSMISSION DEVICE 失效
公开(公告)号：JP2000197366A
公开(公告)日：2000-07-14
申请号：JP36885098
申请日：1998-12-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： ETO NOBUO , OTEGI HIROICHI
IPC分类号： H02M7/12 , H02M7/162
摘要： PROBLEM TO BE SOLVED: To provide a DC power transmission device which can reduce harmonic loss. SOLUTION: In a DC power transmission device, a power conversion device 7 which bridge-connects bulbs 5a-5f formed of a thyristor with three phases and the DC winding wire 4a-side of a transformer 4 are connected, and an AC power is converted into a DC power or DC power is converted into AC power. The commutation of the thyristor is controlled with an inductance obtained by adding the inductance of the transformer 4 and the inductance of a reactor.

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