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51. 发明专利

JP2006311736A Operating method of power supply device and power supply device 有权
标题翻译：电源设备和电源设备的操作方法
公开(公告)号：JP2006311736A
公开(公告)日：2006-11-09
申请号：JP2005132718
申请日：2005-04-28
申请人： Origin Electric Co Ltd , Tokyo Electric Power Co Inc:The , オリジン電気株式会社 , 東京電力株式会社
发明人： OSHIMA MASAAKI , FUKUI JIRO , USHIKI SHUICHI
IPC分类号： H02M7/48
摘要： PROBLEM TO BE SOLVED: To operate a power supply configured by connecting, in parallel, inverters, each having an equivalent internal impedance which can be varied by simply regulating control parameters, in a region of high power efficiency by properly sharing a load, or the like. SOLUTION: When the voltage feedback gain is α, the current feedforward gain is β, and the inverter current gain is G, a plurality of inverters each having a DC resistance represented by (1-β×G)/(α×G) as an equivalent internal impedance are connected in parallel in the power supply device where the plurality of inverters operate at the same frequency. The equivalent internal impedance is varied by varying both or any one of the voltage feedback gain α and the current feedforward gain β, and sharing of load among the inverters is regulated by varying the equivalent internal impedance. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：通过并联连接逆变器来操作各自具有等效内部阻抗的电源，每个逆变器具有通过简单地调节控制参数而改变的等效内部阻抗，在高功率效率的区域中，通过适当地共享负载，等等。
解决方案：当电压反馈增益为α时，电流前馈增益为β，逆变器电流增益为G，多个逆变器各自具有由（1-β×G）/（α× G）作为等效内部阻抗并联连接在多个逆变器以相同频率工作的电源装置中。通过改变电压反馈增益α和电流前馈增益β中的任一个或任何一个来改变等效内部阻抗，通过改变等效内部阻抗来调节逆变器之间的负载共享。版权所有（C）2007，JPO＆INPIT

52. 发明专利

JP2000209775A SERIAL CONNECTED STEP NUMBER SWITCHING TYPE CAPACITOR POWER UNIT 失效
公开(公告)号：JP2000209775A
公开(公告)日：2000-07-28
申请号：JP858099
申请日：1999-01-18
申请人： OKAMURA KENKYUSHO KK , TOKYO ELECTRIC POWER CO , POWER SYSTEM KK , JEOL LTD
发明人： OKAMURA MICHIO , OSHIMA MASAAKI , YAMAGISHI MASAAKI , MOGAMI AKINORI
IPC分类号： H02J7/02 , H02J1/00 , H02J7/10 , H02J7/34 , H02J7/36
摘要： PROBLEM TO BE SOLVED: To stabilize the output voltage of a capacitor power unit by switching and controlling the connection of a capacitor with a smaller number of switches and to reduce the switching loss of the power unit by controlling a simple change-over switch. SOLUTION: The number of serially connected steps of capacitor banks C4 and C5 for adjustment is switched by detecting the charged and discharged states of capacitor banks C1-C3 for output, by using a plurality of controlled rectifier elements including a reverse-direction unidirectional controlled rectifier element S23 connected in parallel with a charging-direction rectifier element D23, which connects the capacitor banks C4 and C5 in series with the capacitor banks C1-C3 and a reverse-direction unidirectional controlled rectifier element S11 connected in parallel with a discharging-direction rectifier element D1, which disconnects the capacitor banks C4 and C5 from the capacitor banks C1-C3 by bypassing and selectively conducting controlled rectifier elements S11, S12, S22, and S23 according to the charged and discharged states of the capacitor banks C1-C3.

53. 发明专利

JPH1132435A POWER CONVERTER 失效
公开(公告)号：JPH1132435A
公开(公告)日：1999-02-02
申请号：JP18282997
申请日：1997-07-08
申请人： MITSUBISHI ELECTRIC CORP , TOKYO ELECTRIC POWER CO
发明人： NAKAMURA FUMINORI , TAMAI SHINZO , YAMAMOTO TOUMA , OSHIMA MASAAKI , MIYAZAKI SATOSHI
IPC分类号： H02J3/01 , G05F1/70 , H02J3/18
摘要： PROBLEM TO BE SOLVED: To obtain an AC current waveform close to a desired waveform by supplying a power output section with a power command value varying such that the impedance characteristics of a power converter, viewed from an AC power supply, suppresses a harmonic current flowing into the power converter. SOLUTION: A current IS flowing from an AC power supply 1 into a capacitor 6 is detected by a second current detector 7b at a position closer to the AC power supply 1 than the joint of the capacitor 6 and a reactor 5 and the output current Ia from a voltage type inverter 3 is corrected by operating the harmonic component of the detection current IS according to a transfer function. Since such impedance characteristics as the harmonic current IS is suppressed by the output current Ia from the voltage type inverter 3 are attained, the harmonic current IS flowing into the capacitor 6 from the AC power supply 1 can be suppressed effectively even if the output voltage from the AC power supply 1 contains a harmonic voltage.

54. 发明专利

JPH10337034A CONSTANT SAMPLING CURRENT CONTROL SYSTEM FOR SINE WAVE INPUT SINGLE PHASE RECTIFIER CIRCUIT 失效
公开(公告)号：JPH10337034A
公开(公告)日：1998-12-18
申请号：JP15163497
申请日：1997-05-26
申请人： TOKYO ELECTRIC POWER CO
发明人： SHODA EISUKE , OSHIMA MASAAKI
IPC分类号： H02M7/219 , H02M7/12
摘要： PROBLEM TO BE SOLVED: To obtain a switching algorithm for substantially bringing the power factor of input current to 1 in a mixed bridge circuit. SOLUTION: The single phase rectifier circuit comprises a mixed bridge comprising two active elements X, Y and a smoothing capacitor CD, and a single phase AC system linked with the mixed bridge wherein an error function between the actual AC current at a linking point and a target function of sine wave current is derived by detecting the actual AC current at a constant sampling period and comparing with the target function. Based on the value of a target function obtained at each sampling time and each value of current error, a switching mode is selected for each main element X, Y of the mixed bridge after a specified control time and the mixed bridge is operated.

55. 发明专利

JPH10136651A CONSTANT SAMPLING TYPE CURRENT CONTROL SYSTEM FOR 3-PHASE SELF-EXCITED AC/DC CONVERTER 失效
公开(公告)号：JPH10136651A
公开(公告)日：1998-05-22
申请号：JP30702096
申请日：1996-11-01
申请人： TOKYO ELECTRIC POWER CO
发明人： SHODA EISUKE , OSHIMA MASAAKI
IPC分类号： H02M7/155 , H02M7/12
摘要： PROBLEM TO BE SOLVED: To extend a sampling period and enable the application to a 3-phase 3-wire AC system by a method, wherein when the comparison results between the real currents of interlinking points and target functions are out of a predetermined range, the switching modes of the respective main elements of an AC/DC converter are selected and operated by the values of an error function only. SOLUTION: 3-phase AC currents at interlinking points are detected and compared with target functions ja (tn), jb (tn) and jc (tn), which are composed of predetermined balanced 3-phase sine waves by comparators 14, 14-1 and 14-2. If the comparison results are out of a predetermined target range in a lower direction, an upward switching mode is selected. If the comparison results are out of a predetermined range in an upper direction, a downward switching mode is selected. Such control is repeated for every current sampling time, and the balanced 3-phase target functions ja (tn), jb (tn) and jc (tn) are followed. For this purpose, the gate commands of respective switching elements can be selected only according to the values of an error function at the respective sampling times.

56. 发明专利

JPH1090311A APPARATUS FOR DETECTING A.C. AMPLITUDE 失效
公开(公告)号：JPH1090311A
公开(公告)日：1998-04-10
申请号：JP24623696
申请日：1996-09-18
申请人： MITSUBISHI ELECTRIC CORP , TOKYO ELECTRIC POWER CO
发明人： TAMAI SHINZO , NAKAMURA FUMINORI , YAMAMOTO TOUMA , OSHIMA MASAAKI , MIYAZAKI SATOSHI
IPC分类号： G01R19/00 , G01R19/04
摘要： PROBLEM TO BE SOLVED: To simplify a circuit constitution by forming an a.c. amplitude estimation value, controlling a controller to make zero an error between the value and an amplitude value of an a.c. signal to be detected, and obtaining the amplitude value from an output. SOLUTION: A phase advancement circuit 5, receiving a voltage signal from an a.c. voltage detector 4, outputs a shift phase voltage signal having a phase advanced by a predetermined amount. A multiplier 14 and a multiplier 15 operate respectively a first, a second a.c. estimation signals by multiplying a first a.c. reference wave of the same phase as that of a voltage signal output from a trigonometric function calculator 13, a second phase-advanced a.c. reference wave output from the calculator 13 by an output of a controller 11. An output of a subtracter 6 becomes a difference of the voltage signal and the first a.c. estimation signal, and an output of a subtracter 7 becomes a difference of the output of the phase advancement circuit 5 and the second a.c. estimation signal. These outputs are multiplied by the first, second a.c. reference waves, and the results are added thereby obtaining an output at an adder 10. The output of the controller 11 as an integrator is changed so that the output of the adder 10 becomes close to zero, whereby the output is nearly equal to the voltage signal, and an amplitude value of a target voltage is detected.

57. 发明专利

JPH09182316A DECENTRALIZED POWER FACILITY 失效
公开(公告)号：JPH09182316A
公开(公告)日：1997-07-11
申请号：JP33939795
申请日：1995-12-26
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： OSHIMA MASAAKI , MIYAZAKI SATOSHI , SHINOHARA HIROFUMI , IGAWA HIDEKAZU , INAGAKI KATSUHISA , HATAKEYAMA MASAHITO
IPC分类号： H02J9/06 , H02J3/38 , H02J15/00 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To supply power to a load surely without interruption at the failure of a power system by cutting a power converter off from the power system, when the failure of the power system is detected, changing the control of the power converter over to voltage control form current control instantaneously, and shifting the operation from system cooperation operation to independing operation. SOLUTION: When a power system 10 side stops power supply, an interconnecting circuit-breaker 11 is interrupted at a high-speed and a power converter 12 is cut off from the power system 10. Along with it, the operation mode of the power converter 12 is switched from current control over to voltage control, and the operation is shifted from system operation to independent operation. Accordingly, it becomes possible to continue to supply power to a load 14 surely without interruption, even at the failure of the power system 10, since it becomes possible to cut the power converter 12 off from the power system 10 instantaneously, and to perform operation it over to an independent operation mode, at the failure of the power system 10, by causing the power converter 12 to have an interruptively power supplying function, and using only one power converter 12.

58. 发明专利

JPH0898539A PWM INVERTER 失效
公开(公告)号：JPH0898539A
公开(公告)日：1996-04-12
申请号：JP22545494
申请日：1994-09-21
申请人： TOKYO ELECTRIC POWER CO , MEIDENSHA ELECTRIC MFG CO LTD
发明人： OSHIMA MASAAKI , ICHIHARA AKIFUMI , KATAOKA YASUO
IPC分类号： H02M7/48 , H03H11/04
摘要： PURPOSE: To obtain a PWM inverter which surely prevents harmonics, which achieves the small size and the low loss of an output filter and in which an impedance at a fundamental frequency is made low. CONSTITUTION: A PWM-inverter main circuit 2 is linked to a system 10 through an output filter which removes harmonic components from the output of the PWM-inverter main circuit. At this time, series resonance circuits 13, 14 in which the carrier frequency and the double frequency of a PWM inverter are used as resonance frequencies across the connection point of linkage reactors 11, 12 and a reference potential are used as the output filter, and only the component of the carrier frequency is removed. In addition, the filter is not inserted between the inverter and the system, and an impedance at a fundamental frequency is lowered.

59. 发明专利

JPH07277836A PRODUCTION OF POWDERY BETA"-ALUMINA CERAMIC STOCK AND PRODUCTION OF SINTERED COMPACT OF THE SAME 失效
公开(公告)号：JPH07277836A
公开(公告)日：1995-10-24
申请号：JP6587394
申请日：1994-04-04
申请人： HITACHI LTD , TOKYO ELECTRIC POWER CO
发明人： KONO KAZUSHIGE , NAKAZAWA TETSUO , KOIKE SEIJI , NISHIMURA SHIGEOKI , OSHIMA MASAAKI , MARUYAMA TADASHI
IPC分类号： C04B35/628 , C04B35/113 , H01M10/39
摘要： PURPOSE:To prevent the decomposition and deterioration of powdery beta-alumina ceramic stock due to moisture absorption and to obtain a '''-alumina ceramic sintered compact having a fine uniform crystal structure and high mechanical strength by adding a water-repellent dispersing aid at the time of mixing constituent components of stock and carrying out dry mixing. CONSTITUTION:When seed crystals of hygroscopic constituent components are dispersed and mixed to produce powdery '''-alumina ceramic stock to be sintered, a water-repellent dispersing aid is added at the time of mixing the constituent components and dry mixing is carried out. Palmitic acid, stearic acid, oleic acid, linolic acid, linolenic acid, clupanodonic acid or a mixture of such acids is used as the dispersing aid and the pref. amt. of the dispersing aid added is 0.5-10wt.%.

60. 发明专利

JPH07161380A SOLID ELECTROLYTE FOR SODIUM-SULFUR BATTERY AND MANUFACTURE OF SODIUM-SULFUR BATTERY USING THE SOLID ELECTROLYTE 失效
公开(公告)号：JPH07161380A
公开(公告)日：1995-06-23
申请号：JP31002993
申请日：1993-12-10
申请人： HITACHI LTD , TOKYO ELECTRIC POWER CO
发明人： NAKAZAWA TETSUO , KONO KAZUSHIGE , OKADA HIDEO , OSHIMA MASAAKI , MARUYAMA TADASHI
IPC分类号： H01M10/39
摘要： PURPOSE:To suppress the deterioration of beta-alumina-based ceramics due to humidity absorption by coating the beta-alumina-based ceramics with a water repelling material, granulating the ceramics to have prescribed particle size, and then firing the resulting ceramics. CONSTITUTION:A synthetic powder of beta''-alumina, a beta-alumina-based ceramic consisting of beta-alumina, or a ceramic containing both ceramics is coated with a water repelling material. The resulting powder is granulated into 30-100mum particle size and the granulated powder is molded and then sintered. As a result, at the time of production of solid electrolytes, deterioration and size alteration due to humidity absorption before sintering and damage and crack formation attributed to them at the time of sintering are suppressed and formability is improved. a sodium-sulfur battery having the solid electrolyte prepared in that way surely has high reliability. Furthermore, since coating with the water repelling material is done, materials containing water as a main component may be selected as a binder and a solvent at the time of granulation and thus there is a wide option to select binders and solvents.

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