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1. 发明专利

DE3363178D1 DEVICE FOR MONITORING THE VALVES OF A POWER CONVERTER OF AN ALTERNATING VOLTAGE POWER CONVERTER 未知
公开(公告)号：DE3363178D1
公开(公告)日：1986-05-28
申请号：DE3363178
申请日：1983-08-11
申请人： FUJI ELECTRIC CO LTD
发明人： KONISHI SHIGEO , SHIRAISHI HIROTAKA
IPC分类号： G01R31/02 , H02H7/12 , H02M7/525 , H03K17/725
摘要： 1. A device for monitoring the controlled rectifiers (TH11, TH12, TH21, TH22) of an alternating power converter, wherein at least two switching units are respectively connected in series with an anti-parallel circuit of two power converter-controlled rectifiers, at least one of which is controllable in each switching unit and where at least one signal sensor (R1, C1 ; R2, C2) is arranged for each switching unit, which signal sensor (R1, C1 ; R2, C2) forms a signal dependent upon the voltage connected to the switching unit and is fed to an analysing device by means of a transmission device, characterized in that a common signal generator (D11 to D14 ; CP1, CP2 ; ZD1, ZD2) is arranged to emit a signal in consecutive half-cycles of each period of the supply voltage for the one or the other of the two switching devices for the signal sensors (R1, C1 ; R2, C2) of two consecutives switching units, and that the combined signal is transmitted by means of a common transmission line (LG1).

2. 发明专利

AT19446T EINRICHTUNG ZUR UEBERWACHUNG DER STROMRICHTERVENTILE EINES WECHSELSTROMSTELLERS. 未知
公开(公告)号：AT19446T
公开(公告)日：1986-05-15
申请号：AT83107970
申请日：1983-08-11
申请人： FUJI ELECTRIC CO LTD
发明人： KONISHI SHIGEO , SHIRAISHI HIROTAKA
IPC分类号： G01R31/02 , H02H7/12 , H02M7/525 , H03K17/725

3. 发明专利

JP2003189475A SYSTEM LINKED POWER CONVERTER 审中-公开
公开(公告)号：JP2003189475A
公开(公告)日：2003-07-04
申请号：JP2001387608
申请日：2001-12-20
申请人： FUJI ELECTRIC CO LTD
发明人： SUZUKI AKIO , KONISHI SHIGEO , EGUCHI NAOYA
IPC分类号： H02J3/18 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide a system linked power converter in which a plurality of self-exciting single phase inverters are directly connected in series to each other, while DC circuit thereof are independent from each other to realize multiple outputs, connected to an AC power system via reactors, and which does not need a multiplex transformer for realizing a DC multiplex system. SOLUTION: A first system linked power converter 1 includes a power converting circuit 2 including self-exciting single phase inverters connected in series to each other, a switching pulse supply unit 3 which generates and supplies switching pulse signals, an apparatus loss detection unit 4 which detects DC output voltages of smoothing capacitors constituting the single phase AC inverters in the power converting circuit 2 and calculates the apparatus losses according to the detected output voltages, and an output voltage control unit 5 which controls the output voltages of the single phase AC inverters in the power converting circuit 2 according to the calculation results. The respective outputs of the power converting unit 2 are connected to respective phases of a three-phase AC power system Vs via reactors L1-L3. COPYRIGHT: (C)2003,JPO

4. 发明专利

JPH0625953B2 失效
公开(公告)号：JPH0625953B2
公开(公告)日：1994-04-06
申请号：JP3905586
申请日：1986-02-26
申请人： FUJI ELECTRIC CO LTD
发明人： KONISHI SHIGEO
IPC分类号： G05F1/70 , H02J3/18

5. 发明专利

JPH0527134B2 失效
公开(公告)号：JPH0527134B2
公开(公告)日：1993-04-20
申请号：JP7101784
申请日：1984-04-11
申请人： FUJI ELECTRIC CO LTD
发明人： YAMAMOTO MITSUTOSHI , KONISHI SHIGEO
IPC分类号： G05F1/70 , H02J3/18

6. 发明专利

JPH04271226A DETECTING CIRCUIT FOR POWER SYSTEM FAILURE 失效
公开(公告)号：JPH04271226A
公开(公告)日：1992-09-28
申请号：JP5581891
申请日：1991-02-26
申请人： FUJI ELECTRIC CO LTD
发明人： KONISHI SHIGEO
IPC分类号： G01R29/16 , H02H3/34 , H02H7/122
摘要： PURPOSE:To prevent an overcurrent in a self-exciting power converter connected to the system by detecting rapidly and accurately various system failures including an unbalance failure such as grounding and short circuit of lines. CONSTITUTION:A normal phase/reverse phase voltage calculating device 100 calculates the real number part and the imaginary number part of a normal phase/reverse phase voltage from a three-phase system voltage. A normal phase/ reverse phase voltage converting device 200 converts the real number part and the imaginary number part into the DC values ¦e1¦, ¦e2¦ of the normal phase/ reverse phase voltage respectively. A failure detecting part 300 compares the DC values with the set value by means of comparators 6a, 6b, outputting a failure detection signal through an OR gate 7.

7. 发明专利

JPH0444778B2 失效
公开(公告)号：JPH0444778B2
公开(公告)日：1992-07-22
申请号：JP7219783
申请日：1983-04-26
申请人： FUJI ELECTRIC CO LTD
发明人： MOTOYOSHI OSAMU , KONISHI SHIGEO
IPC分类号： G05F1/70 , H02J3/18

8. 发明专利

JPH0359448B2 失效
公开(公告)号：JPH0359448B2
公开(公告)日：1991-09-10
申请号：JP21773282
申请日：1982-12-14
申请人： FUJI ELECTRIC CO LTD
发明人： KONISHI SHIGEO
IPC分类号： H02J3/18 , G05F1/70

9. 发明专利

JPH039704B2 失效
公开(公告)号：JPH039704B2
公开(公告)日：1991-02-12
申请号：JP15385982
申请日：1982-09-06
申请人： FUJI ELECTRIC CO LTD
发明人： KONISHI SHIGEO
IPC分类号： G05F1/56 , H02M1/08

10. 发明专利

JPH01183915A POWER UNIT FOR GATE DRIVING CIRCUIT OF GTO THYRISTER 失效
公开(公告)号：JPH01183915A
公开(公告)日：1989-07-21
申请号：JP760088
申请日：1988-01-19
申请人： FUJI ELECTRIC CO LTD
发明人： KONISHI SHIGEO
IPC分类号： H02M1/06 , H03K17/00 , H03K17/16 , H03K17/73 , H03K17/732
摘要： PURPOSE:To omit a large and expensive insulating transformer and to improve reliability such as noise resistance by obtaining a power source from a snubber circuit provided for a GTO thyrister in the gate driving circuit of a gate turn-off(GTO) thyrister. CONSTITUTION:A second capacitor 30 is charged from a snubber capacitor 22 to constitute a snubber circuit through an impedance element 32 and a thyrister 34. The thyrister 34, when an ON command signal is inputted to a monostable 44 simultaneously with a gate driving unit 12 of a GTO thyrister 10, the signal waveform-shaped to a prescribed pulse width is outputted from the monostable 44, the output signal is inputted as the gate pulse of the thyrister 34, the thyrister 34 is ignited and the second capacitor 30 is charged. Thus, the charging voltage per one time of the second capacitor 30 can be made smaller than the element voltage of the GTO thyrister 10.

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