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11. 发明专利

JPS5145732A 失效
公开(公告)号：JPS5145732A
公开(公告)日：1976-04-19
申请号：JP11937774
申请日：1974-10-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SEKINO YOSHIHIRO , MUROYAMA SEIICHI
IPC分类号： H02M7/521 , H02M7/515

12. 发明专利

JPH0928078A AC INPUT POWER SUPPLY DEVICE 失效
公开(公告)号：JPH0928078A
公开(公告)日：1997-01-28
申请号：JP17586395
申请日：1995-07-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TAKEUCHI AKIRA , OTSU SATOSHI , MUROYAMA SEIICHI
IPC分类号： H02M3/155 , H02M3/28 , H02M7/06 , H02M7/12
摘要： PROBLEM TO BE SOLVED: To supply exciting energy to an output only by passing it through a one-stage power converter circuit by controlling a switching element so that the stored energy of an energy storage element becomes equal to the discharged energy at one cycle of an input AC period. SOLUTION: Energy is stored in a transformer 4 during the turn-on period of a switching element 31, and the exciting energy stored into the transformer 4 during the simultaneous turn-off period of switching elements 31, 71 is supplied to an output. In a charging mode, the energy stored into transformer 4 during the turn-on period of the switching element 71 is charged into a capacitor 8. In a discharging mode, since electric power from an AC input source 1 and the capacitor 8 is simultaneously supplied to the output by turning on and off a switching element 92, a voltage between output terminals 61, 62 can be stabilized by controlling the switching elements 71, 92. Accordingly, a device which is miniaturized and has high efficiency and a high power factor can be formed.

13. 发明专利

JPH02131334A UNINTERRUPTIBLE POWER SOURCE EQUIPMENT 失效
公开(公告)号：JPH02131334A
公开(公告)日：1990-05-21
申请号：JP28014188
申请日：1988-11-04
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MUROYAMA SEIICHI , AOKI CHUICHI
IPC分类号： H02J7/34 , H02J9/06
摘要： PURPOSE:To reduce the size and the weight of an uninterruptible power source equipment by connecting an AC power source through a switchgear with a load and with an inverter provided with a battery and normally operating the inverter in charger mode while an inverter mode upon occurrence af power interruption. CONSTITUTION:An AC power source 1 is connected through a switchgear 2 with a load 7 and with the AC output side of an inverter 50. The inverter 50 has DC input side connected with a battery 4, and the operating mode thereof is switched between charger mode and inverter mode through a control circuit 56 from the output of a power interruption detecting circuit 8. The switchgear 2 is normally turned ON to feed AC voltage to the load 7 and the inverter 50 thus charging the battery 4. Upon detection of power interruption, the switchgear 2 is turned OFF and the inverter 50 is brought into inverter mode through a connecting circuit 56 to produce AC power which is fed to the load 7. Circuits 51-56 constituting the inverter 50, as well as high frequency transformer 53, are formed of high frequency parts. By such arrangement, a small, light and safety uninterrubtible power source equipment can be constituted.

14. 发明专利

JPH0274159A AC POWER SUPPLY 失效
公开(公告)号：JPH0274159A
公开(公告)日：1990-03-14
申请号：JP22397088
申请日：1988-09-07
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MUROYAMA SEIICHI , AOKI CHUICHI , KENMOCHI YOSHITAKA , ICHIKAWA OSAMU
IPC分类号： H02M5/20 , H02M5/297
摘要： PURPOSE:To contrive to miniaturize an apparatus and lower its noise by generating a signal synchronized with a high-frequency AC voltage on the basis of a PWM signal and by controlling the operation mode of a polarity switching circuit through said synchronized PWM signal. CONSTITUTION:A high-frequency power circuit 10 is controlled from a reference oscillator 31 via a driver circuit 34. A pulse width modulation signal generator circuit 32 generates a pulse width signal. A synchronizing PWM generator circuit 36 is composed of J-K flip-flops 36-1, 36-2 and outputs a PMW signal Vc synchronized with a high-frequency AC from a reference oscillator 31 inputted via a terminal Va. If the operation mode of a polarity switching circuit 20 is controlled by said PMW signal Vc via a logical circuit 33 and a driver circuit 35, no mode switching is conducted in the middle of a voltage e1, because a high-frequency AC voltage e1 also changes when said operation mode changes between a passing mode and a synchronous rectification mode.

15. 发明专利

JPS5855756B2 JPS5855756B2 - 失效
公开(公告)号：JPS5855756B2
公开(公告)日：1983-12-12
申请号：JP10225779
申请日：1979-08-13
申请人： Nippon Telegraph & Telephone
发明人： KUWATA YUTAKA , MUROYAMA SEIICHI
IPC分类号： H02M5/297
CPC分类号： H02M5/297

16. 发明专利

JPS561766A PHASE CONTROL CIRCUIT 失效
公开(公告)号：JPS561766A
公开(公告)日：1981-01-09
申请号：JP7517879
申请日：1979-06-16
申请人： NIPPON TELEGRAPH & TELEPHONE , SANKEN ELECTRIC CO LTD
发明人： MUROYAMA SEIICHI , KUWATA YUTAKA , HIROSE KAZUO
IPC分类号： G05F1/10 , H02M1/08
摘要： PURPOSE:To simplify the circuit with one circuit composed of the oscillation circuit and the serrated wave generation circuit by obtaining the phase control signal in comparison of the DC signal with the serrated wave voltage generated by the slack oscillation circuit. CONSTITUTION:The comparator compares the DC signal D with the serrated wave voltage B generated by the slack oscillation circuit 4 and the pulse train C with pulse widths theta, theta'... corresponding to the levels of the DC signal as phase control signal. The slack oscillation circuit 4 as illustrated employing UJTQ1, for example, is used to extract the serrated wave voltage developing across the capacitor C1 and the voltage is compared with the DC signal D to obtain the pulse train C having the phase proportional to the variations in the DC signal. Thus, the generation circuit and the serrated wave generation circuit compose one circuit to simplify the circuitry thereby producing the phase control circuit with limited number of the component parts.

17. 发明专利

JPH09285131A STEP-UP TYPE 3-PHASE FULL-WAVE RECTIFIER AND ITS CONTROL METHOD 失效
公开(公告)号：JPH09285131A
公开(公告)日：1997-10-31
申请号：JP12098196
申请日：1996-04-18
申请人： ORIGIN ELECTRIC , NIPPON TELEGRAPH & TELEPHONE
发明人： SUZUKI YOSHIO , KII YASUO , OTSU SATOSHI , MUROYAMA SEIICHI
IPC分类号： H02M7/219 , H02M7/12
摘要： PROBLEM TO BE SOLVED: To provide a control method excellent in controllability which reduces switching loss of a switching semiconductor device and power loss of an inductor for voltage step-up, and does not distort an input current waveform. SOLUTION: In this control method, there are provided with a current detector 4 detecting phase currents flowing in the respective 3-phase AC lines, inductors 5 for voltage step-up which are installed on the respective lines, a 3-phase full-wave rectifying circuit 3 constituted by connecting switching semiconductor elements in 3-phase bridge constitution, a smoothing capacitor 7, and a control circuit 9 which makes the switching semiconductor device operate in high frequency switching by previously determined sequence. The switching semiconductor element are made to operate sequentially in high frequency switching with period T1, in the respective period T of an AC input voltage while putting a pause term between the periods. The period T1 is rather short as compared with the period T. An AVR signal depends on a load side voltage. A pause signal interrupts the supply of the AVR signal to a plurality of the switching semiconductor elements. When the AVR signal exists at the start end and the terminal end of the pause signal, the AVR signal has priority to the pause signal.

18. 发明专利

JPH09117074A INTERMITTENT CHARGING CIRCUIT FOR SECONDARY BATTERY 失效
公开(公告)号：JPH09117074A
公开(公告)日：1997-05-02
申请号：JP26834995
申请日：1995-10-17
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TAKENO KAZUHIKO , YAMAZAKI MIKIO , MUROYAMA SEIICHI
IPC分类号： H02J7/02 , H01M10/44 , H02J9/02 , H02J9/06
摘要： PROBLEM TO BE SOLVED: To make it possible to use a relatively inexpensive Ni-Cd battery or a high capacity nickel-hydrogen battery, employing no substance polluting the environment, as the stand-by power supply for an uninterruptible power supply. SOLUTION: Under a state where a secondary battery 1 is charged, an MOSFET 3 is turned off when the voltage of the secondary battery 1 reaches the maximum threshold voltage of a Schmidt circuit 8 to interrupt the charging operation thus bring about the open circuit state of the secondary battery 1. At a stage where the voltage of the secondary battery 1 drops down to the minimum threshold voltage of the Schmidt circuit 8, the MOSFET 3 is turned on to start the charging operation and this operation is repeated.

19. 发明专利

JPH08107677A CONTROL CIRCUIT OF AC-INPUT POWER-SUPPLY UNIT 失效
公开(公告)号：JPH08107677A
公开(公告)日：1996-04-23
申请号：JP24045394
申请日：1994-10-05
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TAKEUCHI AKIRA , OTSU SATOSHI , MUROYAMA SEIICHI
IPC分类号： H02M7/217 , H02M3/28 , H02M3/335 , H02M3/337 , H02M7/23
摘要： PURPOSE: To reduce the AC-frequency ripple generated in the output voltage of an AC-input power-supply unit while maintaining its stability. CONSTITUTION: In a control circuit of an AC-input power-supply unit, during a term wherein its input power is larger than its output power, a part of its input power is charged in a capacitor 3 via a second switching part 4, and during the term other than this term, a part of its output power is discharged from the capacitor 3 into its output via a first switching part 2, and thereby, the electric energy fed to its output is made constant. In this control circuit, a plurality of error amplifiers 102, 104, 108, 110, 120 each of which inputs an output voltage and a reference voltage and has each differnt feedback gain and each different reference voltage from others are provided in parallel. Further, the outputs of these amplifiers are inputted to the first and second switching parts 2, 4, and thereby, the AC-frequency ripple of the output voltage of the power-supply unit is reduced.

20. 发明专利

JPH04265641A DC UNINTERRUPTIVE POWER FEEDER 失效
公开(公告)号：JPH04265641A
公开(公告)日：1992-09-21
申请号：JP2458191
申请日：1991-02-19
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAMOTO KATSUHIKO , SUGIURA TOSHIYUKI , KOIZUMI YASUYUKI , OZORA SHIZUO , MUROYAMA SEIICHI
IPC分类号： H02J7/00 , H02J7/34 , H02J9/06
摘要： PURPOSE:To supply the power from a storage battery without break even in the case where the AC power gets in power stoppage condition by magnetically coupling the two pairs of input ends and the two pairs of output ends of a DC-DC converter, and changing over the combinations of input terminals and output terminals. CONSTITUTION:A DC-DC converter 13 converts the power from an AC-DC converter 3 onto the voltage level that the load 5 requires, when AC power is supplied, and converts it into DC, and smooths it and supplies it to the load 5. When AC power is not supplied, it converts the power from the storage battery 2 onto the voltage level and converts it into DC and smoothes it, and then supplies it to the load 5. Hereby, even at emergency power stoppage or power stoppage, the load 5 can be supplied with power without instantaneous break as in the past.

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