公开(公告)号：US6125045A

公开(公告)日：2000-09-26

申请号：US379916

申请日：1999-08-24

申请人： Hiroyuki Nishikawa ,  Kihei Nakajima ,  Shoichi Irokawa ,  Hiroshi Uchino

发明人： Hiroyuki Nishikawa ,  Kihei Nakajima ,  Shoichi Irokawa ,  Hiroshi Uchino

IPC分类号： H02M7/155 ,  H02M5/45 ,  H02M7/12 ,  H02M7/515 ,  H02M7/5387

CPC分类号： H02M5/4505

摘要： A power converter includes first and second power conversion units that are connected to each other by a d.c. reactor. The first power conversion unit is a converter in which arms consisting of thyristors are connected in a bridge configuration. The second power conversion unit is an inverter in which arms each of a series combination of a thyristor and a self-excited switch unit having a GTO for producing a commutation voltage for the thyristor are connected in a bridge configuration.

摘要翻译： 功率转换器包括通过直流相互连接的第一和第二功率转换单元。 反应堆。 第一功率转换单元是其中由晶闸管组成的臂以桥式配置连接的转换器。 第二功率转换单元是以桥式结构连接晶闸管和具有用于产生用于晶闸管的换向电压的GTO的自激式开关单元的串联组合的臂的逆变器。

公开(公告)号：US4349867A

公开(公告)日：1982-09-14

申请号：US241100

申请日：1981-03-06

申请人： Kenichi Otsuka ,  Hiroshi Uchino ,  Kihei Nakajima

发明人： Kenichi Otsuka ,  Hiroshi Uchino ,  Kihei Nakajima

IPC分类号： H02M5/27 ,  H02M5/257

CPC分类号： H02M5/27 ,  H02M5/273

摘要： A control apparatus for a cycloconverter includes m sets of bridge converters connected between the input terminals of an m-phase load (m.gtoreq.3) and is applied for a cycloconverter of which the common connection point of the bridge converters is disconnected from a neutral point of the load. The output voltage of each bridge converter is controlled by a reference voltage signal during a 1/m period of one cycle of the load voltage. The center of the 1/m period is located at a positive or negative maximum amplitude point of the load voltage. The output voltage is also controlled during the remaining period of (1-1/m) by a phase control input signal corresponding to a difference between a reference current signal and the load current. The reference voltage signal and the phase control input signal are selected by switching signals from a logic circuit for detecting phase voltages of the load to alternately be applied to the phase control circuits.

摘要翻译： 用于循环换流器的控制装置包括连接在m相负载（m> / = 3）的输入端之间的m组桥式变换器，并被应用于其中桥式变流器的公共连接点与 中性点的负载。 在负载电压的一个周期的1 / m周期内，每个桥式变换器的输出电压由参考电压信号控制。 1 / m周期的中心位于负载电压的正或负最大振幅点。 输出电压也在（1-1 / m）的剩余时间内通过对应于参考电流信号和负载电流之间的差的相位控制输入信号来控制。 通过从用于检测负载的相电压的逻辑电路的信号切换来交替地施加到相位控制电路来选择参考电压信号和相位控制输入信号。

公开(公告)号：US4517636A

公开(公告)日：1985-05-14

申请号：US512004

申请日：1983-07-08

申请人： Hiroshi Uchino ,  Kihei Nakajima ,  Ryoichi Kurosawa

发明人： Hiroshi Uchino ,  Kihei Nakajima ,  Ryoichi Kurosawa

IPC分类号： H02M7/515 ,  H02M7/525

CPC分类号： H02M7/5155 ,  H02M7/525

摘要： An inverter apparatus includes a plurality of gate-turn-off thyristors being provided at each end of thyristor-branches, and bias sources or capacitors connected in parallel with the gate-turn-off thyristors for applying reverse voltage to the thyristor-branches when the gate-turn-off thyristor is turned off.

摘要翻译： 逆变器装置包括在晶闸管分支的两端设置的多个栅极截止晶闸管，以及与栅极截止晶闸管并联连接的偏置源或电容器，用于在晶闸管支路施加反向电压时 门极关断晶闸管关闭。

公开(公告)号：US4649334A

公开(公告)日：1987-03-10

申请号：US788744

申请日：1985-10-17

申请人： Kihei Nakajima

发明人： Kihei Nakajima

IPC分类号： G05F1/67 ,  G05F5/00

CPC分类号： G05F1/67 ,  Y02E10/58 ,  Y10S136/293 ,  Y10S323/906

摘要： In a method of and a system for controlling a photovoltaic power system including a solar battery and a power converter receiving the output of the solar battery, the voltage of the solar battery is kept at a voltage reference which is determined in accordance with the operating condition of the system thereby to maximize the power of the solar battery. Operating mode is switched between a first mode in which the voltage reference is periodically decreased and a second mode in which the voltage reference is periodically increased. The switching between the first and the second mode is effected in accordance with the direction of change of the power and the voltage of the solar battery. Where there is a reactance between the solar battery and the point at which the voltage or the current is detected, or a time lag element in a voltage detector or a current detector, an arrangement may be provided to compensate detection error due to the reactance or the time lag element.

摘要翻译： 在一种用于控制包括太阳能电池和接收太阳能电池的输出的功率转换器的光伏电力系统的方法和系统中，太阳能电池的电压被保持在根据操作条件确定的电压基准 从而使太阳能电池的功率最大化。 操作模式在其中电压基准周期性地降低的第一模式和周期性地增加电压基准的第二模式之间切换。 第一和第二模式之间的切换是根据太阳能电池的功率和电压的变化方向进行的。 在太阳能电池与检测到电压或电流的点之间存在电抗或电压检测器或电流检测器中的时滞元件的情况下，可以提供这样的配置来补偿由于电抗引起的检测误差或 时滞元素。

公开(公告)号：US06563691B2

公开(公告)日：2003-05-13

申请号：US09954213

申请日：2001-09-18

申请人： Kenji Kijima ,  Kihei Nakajima

发明人： Kenji Kijima ,  Kihei Nakajima

IPC分类号： H01G438

CPC分类号： H05K1/0231 ,  H05K1/0254 ,  H05K1/113 ,  H05K3/3426 ,  H05K2201/09309 ,  H05K2201/10522 ,  H05K2201/10545 ,  H05K2201/10818

摘要： The mounting structure has a plurality of unit capacitors (1) comprising ceramic capacitor elements (2) with terminals (3), (4), and a three-tier substrate (10) comprising an insulating layer (11) sandwiched between two electrodes (12), (13). A plurality of apertures (15) is formed in the first electrode, in which are positioned bosses (16) being continuous with the second electrode (13), while the plurality of unit capacitors (1) is arranged on the first electrode (12), one terminal of each unit capacitor (1) being in contact with the first electrode (12) and the other with the second electrode (13) via a boss (16) so as to connect all the unit capacitors (1) electrically in parallel fashion. In this manner a mounting structure for capacitors is provided which permits of high capacity in a compact form.

摘要翻译： 安装结构具有包括具有端子（3），（4）的陶瓷电容器元件（2）和夹在两个电极之间的绝缘层（11）的三层基板（10）的多个单位电容器（1） 12），（13）。 在第一电极中形成有多个孔（15），其中定位的凸起（16）与第二电极（13）连续，而多个单位电容器（1）布置在第一电极（12）上， 每个单位电容器（1）的一个端子经由凸台（16）与第一电极（12）接触，另一端与第二电极（13）接触，以便将所有单元电容器（1）并联电连接 以这种方式，提供了用于电容器的安装结构，其允许以紧凑形式的高容量。

公开(公告)号：US5001619A

公开(公告)日：1991-03-19

申请号：US526689

申请日：1990-05-22

申请人： Kihei Nakajima ,  Shinji Sato

发明人： Kihei Nakajima ,  Shinji Sato

IPC分类号： H02M7/48 ,  H02M7/527

CPC分类号： H02M7/527

摘要： In an apparatus for carrying out PWM control of an inverter having a filter connected to the a.c. output side thereof, pulse patterns adapted for determining switching timings for canceling a specified harmonic component, e.g., the fifth order harmonic component included in a voltage on the output side of the filter without exerting an influence on the output voltage fundamental wave, are stored in advance into a memory with respect to various vector quantities of the specified harmonic component to select, from a plurality of pulse patterns stored in the memory, each time a pulse pattern for reducing the specified harmonic component. The inverter is subjected to PWM control in accordance with the pulse pattern thus selected.

公开(公告)号：US4878208A

公开(公告)日：1989-10-31

申请号：US250853

申请日：1988-09-29

申请人： Nagataka Seki ,  Kiyoshi Ogawa ,  Kihei Nakajima

发明人： Nagataka Seki ,  Kiyoshi Ogawa ,  Kihei Nakajima

IPC分类号： H02J3/38 ,  H02M7/48

CPC分类号： H02J3/38 ,  Y10T307/511

摘要： In a system interconnecting inverter apparatus, an inverter for controlling power of an AC power system is coupled, via a coupling reactor, to the AC power system having a system voltage. A system phase signal indicating the phase of the system voltage is detected by a system phase detection circuit in real time. Another phase signal indicating the phase of the system voltage is detected by a comparison phase detection circuit with a predetermined delay time, and the detection result is temporarily stored in the circuit as a comparison phase signal. The system phase signal and the comparison phase signal are phase-compared by a stop circuit. When a phase difference between the system phase signal and the comparison phase signal exceeds a predetermined value, the stop circuit stops the operation of the inverter.

公开(公告)号：US4246528A

公开(公告)日：1981-01-20

申请号：US14098

申请日：1979-02-22

申请人： Kihei Nakajima

发明人： Kihei Nakajima

IPC分类号： H02P6/06 ,  H02P6/08 ,  H02P25/02 ,  H02P5/28

CPC分类号： H02P25/03

摘要： In a control system of an AC motor fed from a frequency converter including a thyristor rectifier and a thyristor inverter, the speed of the motor is controlled by a current control system comprising a speed control circuit responsive to a reference speed signal and an actual speed signal, and a current control circuit which produces a pulse signal supplied to the rectifier. The inverter is controlled by another pulse signal corresponding to the angular position of the rotor of the motor. An additional current instruction circuit is provided which in response to the two pulse signals described above controls the current control circuit.

摘要翻译： 在从包括晶闸管整流器和晶闸管逆变器的变频器馈送的AC电动机的控制系统中，电动机的速度由包括响应于参考速度信号和实际速度信号的速度控制电路的电流控制系统控制 以及产生提供给整流器的脉冲信号的电流控制电路。 逆变器由对应于电动机转子的角位置的另一个脉冲信号控制。 提供了一个额外的电流指令电路，其响应于上述两个脉冲信号控制电流控制电路。