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91. 发明专利

JPS55118113A POWER UNIT FOR LARGE DIRECT CURRENT 失效
公开(公告)号：JPS55118113A
公开(公告)日：1980-09-10
申请号：JP2453279
申请日：1979-03-05
申请人： MASUDA MASAMI , SHINTOMI TAKAKAZU , ASACHI KIYOYUKI
发明人： MASUDA MASAMI , SHINTOMI TAKAKAZU , ASACHI KIYOYUKI
IPC分类号： H02M7/17 , G05F1/56 , H02M7/155
摘要： PURPOSE:To secure the easy generation for the large direct current without using any transformer for large current but by using the rectifying bridge which rectifies the input of the direct AC power source, the small current rectification and constant current driving circuit and the commutating capacitor each. CONSTITUTION:Small current rectification and constant current driving circuit A consists of input AC power terminal 1, rectifying small current thyristors 2a-2f, DC ripple eliminating capacitor 3a, transient controlling reactor 3b, constant current controlling galvanometer 4, constant current setting circuit 5, and phase shifter 6 each. The DC output of thyristors 2a-2f are given to thyristors 7a-7f via the filter comprising 3a and 3b, and thus 3-phase AC generating circuit B is formed. In this case, 8a-8c are commutating capacitors each. Then the rectification is given again at large direct current rectifying circuit C and via thyristors 9a-9f, and then the load is supplied to the direct current.

93. 发明专利

JPS5553184A POLARITYYCHANGEABLE RECTIFIER 失效
公开(公告)号：JPS5553184A
公开(公告)日：1980-04-18
申请号：JP12620678
申请日：1978-10-16
申请人： HITACHI LTD
发明人： ITOU TETSUO
IPC分类号： H02M7/17 , H02M7/145
摘要： PURPOSE:To facilitate control of changing current polarity by directly connecting a gate-triggering-current supply element which can supply a gate-triggering current to a gate terminal without relation to the potentials of the anode and cathode of a thyristor. CONSTITUTION:A constant current circuit 16 is connected to the gate terminal of a thyristor 15 and a constant current circuit 18 is connected to the gate terminal of a thyristor 17 which is connected in the opposing direction of the thyristor 15. The constant-current circuits 16 and 18 are controlled by a constant-current control circuit 19, and the polarity of the current which is supplied to a load 3 from an ac power supply 2 can be changed by a current-polarity changing circuit 20.

94. 发明专利

JPS5534776A ELECTRIC POWER CONVERTING DEVICE 失效
公开(公告)号：JPS5534776A
公开(公告)日：1980-03-11
申请号：JP10843878
申请日：1978-09-04
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： KITAMURA HIROYUKI
IPC分类号： H02M7/17 , G05F1/585
摘要： PURPOSE:To get rid of the current control impossible area and make the control response and the power-factor of power supply side satisfactory, by mounting the forward converter such as thyristor-Leonard, etc. and the reverse converter such as thrystor-inverter, etc. CONSTITUTION:This device is formed by the forward converter A consisting of thyristors 20-25, the reverse converter B consisting of main thyristors 1-6, diodes 7-12, and commutation condensers 13-18, and the control circuit C consisting of the voltage detection circuit 34, etc. And the voltage detection circuit 70 is connected to the output terminal of A, and based on the aforesaid output the polarity discrimination circuit 71 discriminates the polarity of A, outputs the discriminating signal ''k'' depending on positive or negative, and the inverter 72 outputs the inversion signal by inverting the signal ''k''. Also, the primary delay circuit alleviates the output signal of the voltage control circuit 43, namely, a frastic change of the voltage deviation signal.

95. 发明专利

JPS5523741A METHOD OF CONTROLLING OPERATION OF ACCDC CHANGEOVER UNIT 失效
公开(公告)号：JPS5523741A
公开(公告)日：1980-02-20
申请号：JP9461578
申请日：1978-08-04
申请人： HITACHI LTD
发明人： KONISHI HIROO , KAWAI TADAO , SUGAWARA SHIYOUICHI
IPC分类号： H02M7/17 , H02J3/36 , H02J5/00 , H02M7/145

96. 发明专利

JPS553094A NONCIRCULATION CURRENT TYPE DUPLEX RECTIFIER CONTROL UNIT 失效
公开(公告)号：JPS553094A
公开(公告)日：1980-01-10
申请号：JP10567778
申请日：1978-08-31
申请人： BBC BROWN BOVERI & CIE
发明人： RUTSUTSU BERUKUMAN
IPC分类号： G05F1/585 , H02M7/17 , H02M7/757 , H02P7/03

99. 实用新型

JPS5378410U 失效
公开(公告)号：JPS5378410U
公开(公告)日：1978-06-29
申请号：JP15996376
申请日：1976-11-29
IPC分类号： H02P1/22 , H02M7/155 , H02M7/17 , H02P9/10 , H02P9/30 , H02P21/22 , H02P21/36 , H02P23/00 , H02P23/24 , H02P25/022 , H02P25/10 , H02P103/20 , H02P7/36

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