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71. 发明专利

CA2223679A1 RECTIFICATION, DERECTIFICATION AND POWER FLOW CONTROL 未知
公开(公告)号：CA2223679A1
公开(公告)日：1997-01-09
申请号：CA2223679
申请日：1996-06-21
申请人： DC TRANSFORMATION INC
发明人： LIMPAECHER RUDOLF
IPC分类号： H02M3/142 , H02M3/315 , H02M5/45 , H02M9/04 , H03K3/57 , H02M1/00 , H02M7/00 , H02M1/12 , H02M1/14 , H02J3/18 , H02M3/18
摘要： A method of transferring energy from a power source into an output node including the steps of separately charging each of a plurality of energy storage elements from the power source; after the plurality of energy storage elements are charged, discharging a selected one of the energy storage elements through an inductive element into the output node; and as the selected energy storage element is being discharged through the inductive element, when its voltage reaches a preselected value, discharging another one of the energy storage elements through the inductive element into the output node.

72. 发明专利

DE69009122T2 未知
公开(公告)号：DE69009122T2
公开(公告)日：1994-10-13
申请号：DE69009122
申请日：1990-08-20
申请人： TOYO ELECTRIC MFG CO LTD
发明人： IIDA KATSUJI , KISHIMOTO TAKAHIRO
IPC分类号： H02M3/135 , H02M3/142 , H02M3/155
摘要： A direct current to direct current converting chopper device comprising essentially two switching elements, two reactors, two diodes and three condensers likewisely with a conventional device but able to maintain rather stable output voltages to avoid higher harmonic noises and able to provide output voltage higher than the input voltage.

73. 发明专利

CA2107934A1 SEMICONDUCTOR VALVE 未知
公开(公告)号：CA2107934A1
公开(公告)日：1994-06-18
申请号：CA2107934
申请日：1993-10-07
申请人： TOSHIBA KK
发明人： SEKI NAGATAKA
IPC分类号： H02M1/00 , H02M1/088 , H02M3/142 , H03K17/0814 , H03K17/10 , H03K17/56
摘要： A semiconductor valve including a plurality of series-connected semiconductor devices and a plurality of capacitors. Each of the capacitors is connected in parallel to one of the semiconductor devices, respectively. Each of the semiconductor devices is a switching valve device having a pair of main electrodes and at least one control electrode. The semiconductor devices are such that a first variation in quantities with respect to tail charges on turn-off of the semiconductor devices is within a first prescribed value.

74. 发明专利

AU3945293A Compact and efficient transformerless power conversion system 未知
公开(公告)号：AU3945293A
公开(公告)日：1993-11-08
申请号：AU3945293
申请日：1993-04-02
申请人： D C TRANSF INC
发明人： LIMPAECHER RUDOLF
IPC分类号： H02M7/19 , H02J3/18 , H02M3/07 , H02M3/142 , H02M3/158 , H02M5/257 , H02M7/04 , H02M7/10 , H02M7/155 , H02M7/48 , H03K17/0814
摘要： An electrical charge transfer apparatus is described for transferring charge from one phase to another phase of a multiphase power line carrying an AC signal having a period of TAC. The apparatus employs a capacitive storage circuit and a plurality of charging circuits, each of which is arranged to couple a different phase of the multiphase AC power line to the capacitive storage circuit and to thereby transfer charge from that phase to the storage circuit, Each of the plurality of charging circuits includes a unidirectional switch and an inductor, and is adapted when coupled to the capacitive storage circuit to form a corresponding resonant circuit having a resonant frequency of 1/Ti, where i is an index identifying the charging circuit and wherein the various Ti are all less than TAC. A plurality of injection circuits are also provided, each of which is arranged to couple the capacitive storage circuit to a different one of the phases of the multiphase power line, thereby to inject charge from the capacitive storage circuit into the phase to which it is coupled. Each of these injection circuits comprising an inductor and a unidirectional switch. A control circuit is arranged to operate the unidirectional switches of the plurality of charging circuits to produce a sequence of resonant charging cycles that transfer charge from one phase to the capacitive storage unit, and is also arranged to operate the unidirectional switches of the plurality of injecting circuits to transfer charge from the capacitive storage unit to another phase.

75. 发明专利

CS272101B1 PROTECTIVE CONNECTION FOR THYRISTOR'S CONTROL CIRCUIT 未知
公开(公告)号：CS272101B1
公开(公告)日：1991-01-15
申请号：CS674487
申请日：1987-09-18
申请人： SOVA JIRI , REJENT JAN
发明人： SOVA JIRI ING , REJENT JAN ING CSC
IPC分类号： H02M3/10 , H02M3/142

76. 发明专利

DE3465668D1 ACCELERATION POWER SUPPLY 未知
公开(公告)号：DE3465668D1
公开(公告)日：1987-10-01
申请号：DE3465668
申请日：1984-09-24
申请人： TOSHIBA KK
发明人： MATSUOKA MAMORU , HIGA OSAMU C O PATENT DIVISION
IPC分类号： H02M7/155 , G05F1/46 , H02M3/142 , H02M7/12 , H05H5/02 , H02M7/10
摘要： An acceleration power supply includes a series-connected semiconductor switches with voltage dividing elements and another semiconductor switch coupled in series to the series-connected semiconductor switches for cutting off a power supply line connected to a load of the apparatus. The series-connected semiconductor switches and cutting-off semiconductor switch have a function of a series regulator.

77. 发明专利

FR2568734B1 未知
公开(公告)号：FR2568734B1
公开(公告)日：1986-12-05
申请号：FR8412254
申请日：1984-08-02
申请人： ALSTHOM ATLANTIQUE
发明人： VOLUT SERGE
IPC分类号： H02M3/142 , H02P7/00 , H02P7/29 , H02P7/295

78. 发明专利

AU3790485A CHOPPER CONTROL SYSTEM 未知
公开(公告)号：AU3790485A
公开(公告)日：1986-05-22
申请号：AU3790485
申请日：1985-01-18
申请人： HITACHI LTD
发明人： NOMI MAKOTO , MIYAMOTO SHOJI , TAKAOKA TADASHI , OSHIMA HIROYASU
IPC分类号： H02P7/29 , H02M3/135 , H02M3/137 , H02M3/142 , H02P7/291 , H02P7/295
摘要： A novel control system for the motor or the like is disclosed which operates basically on principle that the power flowing in during the conduction of a chopper gate of a chopper device is integrated, and when the integrated value reaches a target, the gate is turned off, thereby realizing the control of an instantaneous value and high response and stability without the conventional feedback control. The target value is also reduced against the excess of the source voltage under variations in load for the regenerated power. Further, a constant-voltage control limiter is added to improve the ability to prevent a slip and race.

79. 发明专利

DE3136782A1 未知
公开(公告)号：DE3136782A1
公开(公告)日：1982-06-03
申请号：DE3136782
申请日：1981-09-16
申请人： GEN MOTORS CORP
发明人： KARADSHEH SAM MARK , RADOMSKI THOMAS ANDREW
IPC分类号： H02M3/142 , H02M3/125
摘要： A multiple phase SCR chopper controller for establishing a normal phase relationship among the various SCR phases and for modifying the normal phase relationship for input signals for which the SCR commutation networks cannot be sufficiently charged. These input signals correspond to conduction period overlap, and the modified phase relationship avoids chopper commutation failure under such conditions.

80. 发明专利

GB2085677A MULTIPLE PHASE CHOPPERS 未知
公开(公告)号：GB2085677A
公开(公告)日：1982-04-28
申请号：GB8127333
申请日：1981-09-10
申请人： GEN MOTORS CORP
IPC分类号： H02M3/142 , H02M1/08 , H02M3/135
摘要： A multiple phase SCR chopper controller for establishing a normal phase relationship among the various SCR phases and for modifying the normal phase relationship for input signals for which the SCR commutation networks cannot be sufficiently charged. These input signals correspond to conduction period overlap, and the modified phase relationship avoids chopper commutation failure under such conditions.

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