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1. 发明专利

JPS56157223A CONTROL CIRCUIT FOR REACTIVE POWER COMPENSATING DEVICE 失效
公开(公告)号：JPS56157223A
公开(公告)日：1981-12-04
申请号：JP6014780
申请日：1980-05-07
申请人： JAPAN NATIONAL RAILWAY , MITSUBISHI ELECTRIC CORP
发明人： FUJIE HIROSHI , TAKEDA MASATOSHI
IPC分类号： H02J3/18 , G05F1/70

2. 发明专利

JPH06261548A UNBALANCE COMPENSATOR FOR THREE PHASE/TWO PHASE CONVERTER 失效
公开(公告)号：JPH06261548A
公开(公告)日：1994-09-16
申请号：JP4760593
申请日：1993-03-09
申请人： RAILWAY TECHNICAL RES INST , MITSUBISHI ELECTRIC CORP
发明人： MOCHINAGA YOSHIFUMI , HISAMIZU TAIJI , TAKEDA MASATOSHI , MIYASHITA TAKESHI
IPC分类号： H02J3/18 , H02M5/14 , H02M5/45
摘要： PURPOSE:To obtain an unbalance compensator capable of suppressing harmonic current by comprising a converter control circuit which controls a both power converter on the basis of command signals from a power interchange control circuit, a reactive power compensation circuit, and a harmonic circuit. CONSTITUTION:A power converter 10 communicates power in both directions between AC power of an M connection power source circuit on the secondary side of a Scott connection transformer 2 and DC power of a DC intermediate circuit, and a power converter 11 between AC power of a T connection power source circuit and DC power of the DC intermediate circuit. A power interchange control circuit 15, a DC voltage control circuit 16, a reactive power compensation circuit 17, and a harmonic compensation circuit 18 output command signals complying with control targets, which are synthesized in a batch by a current command operational circuit 19, so that the power converters 10,11 undergo on-off switching control through a current control circuit 20 and a PWM control circuit 21 on the basis of the command signal. As a result, two-phase side active power becomes equal, and simultaneously reactive power and harmonic current are compensated to provide a complete equalization of current.

3. 发明专利

JPH0630029B2 失效
公开(公告)号：JPH0630029B2
公开(公告)日：1994-04-20
申请号：JP9788186
申请日：1986-04-30
申请人： MITSUBISHI ELECTRIC CORP
发明人： IKEDA KAZUO , TAKEDA MASATOSHI
IPC分类号： G05F1/45

4. 发明专利

JPH065816B2 失效
公开(公告)号：JPH065816B2
公开(公告)日：1994-01-19
申请号：JP27071086
申请日：1986-11-13
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKEDA MASATOSHI
IPC分类号： H03K17/725

5. 发明专利

JPH05341864A 失效
公开(公告)号：JPH05341864A
公开(公告)日：1993-12-24
申请号：JP15192192
申请日：1992-06-11
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKEDA MASATOSHI
IPC分类号： G05F1/70 , H02J3/18 , H02J3/50 , H02M7/48
摘要： PURPOSE:To reduce the loss of a power converting device which includes a PWM self-excited inverter connected to a system. CONSTITUTION:A power voltage disturbance detecting circuit 15 is used to detect the voltage disturbance of an AC power supply 1 in addition to a carrier frequency varying circuit 19 which varies the PWM control carrier frequency of a PWM self-excited inverter 4 connected to the power supply 1. The carrier frequency of the inverter 4 is usually kept at a low level and then set at a high level when the power supply 1 has the voltage disturbance. Thus the inverter 4 is usually operated with reduction of the switching loss.

6. 发明专利

JPH04289731A DEVICE FOR COPING WITH POWER SUPPLY FAILURE 失效
公开(公告)号：JPH04289731A
公开(公告)日：1992-10-14
申请号：JP2080391
申请日：1991-02-14
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKEDA MASATOSHI , FUKADA MASAKAZU
IPC分类号： H02J3/16 , H02J3/26
摘要： PURPOSE:To compensate a voltage drop, voltage unbalance and negative-phase current due to an impedance at the power supply side and an impedance of a transformer for feeder without using a series capacitor. CONSTITUTION:For a transformer for feeder, a modified wood bridge connection transformer 7 is used which is constituted of a primary winding 71 connected to a three-phase ac supply 1, a secondary winding 72 connected to a train load 6, and a tertiary winding 73. When distributing the impedance across each winding to the three windings, it is so distributed that an impedance may be zero at the secondary winding 72 side. Then, by operating an SVC 4 connected to the tertiary winding 73 of the modified wood bridge connection transformer 7, a voltage drop, voltage unbalance and negative-phase current due to an impedance 2 at the power supply side and an impedance of the modified wood bridge connection transformer 7 are compensated.

7. 发明专利

JPH0219485B2 失效
公开(公告)号：JPH0219485B2
公开(公告)日：1990-05-02
申请号：JP8294783
申请日：1983-05-10
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKEDA MASATOSHI
IPC分类号： G05F1/70 , H02H3/20 , H02H7/12 , H02J3/18

8. 发明专利

JPH01227630A ACTIVE FILTER APPARATUS 失效
公开(公告)号：JPH01227630A
公开(公告)日：1989-09-11
申请号：JP5203588
申请日：1988-03-04
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKEDA MASATOSHI , ATSUTSUKA TOMOHIKO , TACHIBANA YOSHITAKA
IPC分类号： H02J3/01 , H02J3/02
摘要： PURPOSE:To improve higher harmonic compensating characteristics of an apparatus by computing and outputting correction signals to be added to a current command value on the basis of past deviation signals. CONSTITUTION:A control deviation signal between a current command value and a feedback signal is inputted to a learing control circuit 15, in which the control deviation signal with a phase earlier than said current command value by a phase corresponding to the lag time of said feedback signal is added to said command value for every period and outputted as a correction signal. Then, a current correction command value obtained by adding said correction signal and current command value is inputted as the current correction of an active filter 5. Thus, an active filter output current lagging behind the current correction command value in a control response normally coincides with the current command value.

9. 发明专利

JPS62256010A CONTROL METHOD FOR HIGH VOLTAGE AC THYRISTOR CONTROL SWITCH 失效
公开(公告)号：JPS62256010A
公开(公告)日：1987-11-07
申请号：JP9788186
申请日：1986-04-30
申请人： MITSUBISHI ELECTRIC CORP
发明人： IKEDA KAZUO , TAKEDA MASATOSHI
IPC分类号： G05F1/45
摘要： PURPOSE:To reduce the maximum value of a voltage between terminals, by connecting a thyristor anti-parallel connecting body only to two phases of a three-phase AC line, setting a phase current having a slow phase as the first cut-off phase, and cutting off the one having a fast phase after cutting off the one having the slow phase. CONSTITUTION:When three phase currents iR, iS, and iT are cut off by a high voltage AC thyristor control switch 5, first of all, the gate of a thyristor anti-parallel connecting body 31 is blocked at a time of t3, and at the time t4 of the first zero point of a following R-phase current iR, the R-phase current iR is cut off. Next, when the gate of a thyristor anti-parallel connecting body 33 is blocked at a time t4 in the neighborhood of an electrical angle of 90 deg. from a time t4, both the phase currents of S-phase and T-phase iS and iT are cut off at a time t6 (electrical angle of 90 deg. later than the time t4) of the first zero point of following phase currents of S-phase and T-phase iS and iT (=the inverse of iS). Thus, by cutting the R-phase having the phase slower than the T-phase first, setting it as the first cut-off phase, and cutting off the T-phase next, it is possible to minimize comparatively the maximum voltage between terminals applied on the thyristor anti-parallel connecting body after extinction of arc.

10. 发明专利

JPS61109434A Control circuit for energy shifter between superconducting coil 失效
标题翻译：超导线圈之间的能量转换控制电路
公开(公告)号：JPS61109434A
公开(公告)日：1986-05-27
申请号：JP22958884
申请日：1984-10-31
申请人： Mitsubishi Electric Corp
发明人： TAKEDA MASATOSHI
IPC分类号： H02J15/00
CPC分类号： Y02E40/67

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