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    • 12. 发明授权
    • Power supply apparatus
    • 电源设备
    • US07339807B2
    • 2008-03-04
    • US11651299
    • 2007-01-08
    • Masao KatookaTetsuro IkedaKenzo DanjoTakeshi MorimotoHideo Ishii
    • Masao KatookaTetsuro IkedaKenzo DanjoTakeshi MorimotoHideo Ishii
    • H02M7/00H02H7/122
    • H02M1/10
    • One of a plurality of voltages is adapted to be applied to power supply terminals (2a, 2b, 2c). A rectifying circuit (6) rectifies the applied voltage and develops a rectified voltage between the output terminals (6a, 6b) thereof. Inverters (16a, 16b) are connected into one of a plurality of inverter connections between the rectifier output terminals (6a, 6b) in response to one of a plurality of inverter connection indicative signals. The inverter connections are set to correspond to respective ones of the plurality of voltages, so that a predetermined voltage can be applied to each inverter whichever one of the plurality of voltages is applied to the power supply terminals. An inverter connection indicative signal generating circuit (34) is manually operated to generate a desired one of the inverter connection indicative signals. A thyristor (8) is disposed between the rectifier output terminals (6a, 6b) and the inverters (16a, 16b). When one of the plurality of voltages is applied to the power supply terminals, a voltage detecting circuit (38) generates an inverter connection indicative signal corresponding to the voltage applied to the power supply terminals. A judging unit (26d) determines whether or not the inverter connection indicative signals from the voltage detecting circuit (38) and the inverter connection indicative signal generating circuit (34) match. When the two signals match, a thyristor control unit (26a) provides a CLOSE signal to the thyristor (8). When the two signals do not match, an alarm circuit (42) is activated.
    • 多个电压中的一个适于施加到电源端子(2a,2b,2c)。 整流电路(6)对施加的电压进行整流,并在其输出端子(6a,6b)之间产生整流电压。 响应于多个逆变器连接指示信号中的一个,逆变器(16a,16b)连接到整流器输出端子(6a,6b)之间的多个逆变器连接中的一个。 逆变器连接被设置为对应于多个电压中的相应电压,使得可以向每个逆变器施加预定电压,无论哪一个电压被施加到电源端子。 逆变器连接指示信号发生电路(34)被手动操作以产生期望的一个逆变器连接指示信号。 在整流器输出端子(6a,6b)和逆变器(16a,16b)之间设置晶闸管(8)。 当多个电压中的一个施加到电源端子时,电压检测电路(38)产生与施加到电源端子的电压相对应的反相器连接指示信号。 判断单元(26d)判定来自电压检测电路(38)和逆变器连接指示信号生成电路(34)的逆变器连接指示信号是否一致。 当两个信号匹配时,晶闸管控制单元(26a)向晶闸管(8)提供CLOSE信号。 当两个信号不匹配时,报警电路(42)被激活。
    • 13. 发明申请
    • Power supply apparatus for arc-utilizing apparatuses
    • 电弧利用装置用电源装置
    • US20070217231A1
    • 2007-09-20
    • US11384845
    • 2006-03-20
    • Hideo IshiiTetsuro IkedaKenzo DanjoYuji Ikejiri
    • Hideo IshiiTetsuro IkedaKenzo DanjoYuji Ikejiri
    • H02M3/335
    • H02J1/102B23K9/0956
    • A power supply apparatus for use with arc-utilizing apparatuses includes a plurality of power supply blocks (2a, 2b) of the same capacity. Each power supply block (2a, 2b) includes an input-side rectifying circuit (4a, 4b), an inverter (10a, 10b), a transformer (12a, 12b), and an output-side rectifying circuit (18a, 18b). The inverter (10a, 10b) is controlled by a control circuit (30a, 30b) in such a manner that high-frequency current flowing the inverter (10a, 10b) or current flowing through the output-side rectifying circuit (18a, 18b) can correspond to a reference signal provided by a reference signal generator (34a, 34b). The outputs of the output-side rectifying circuits (18a, 18b) of the power supply blocks are connected in parallel with each other. The values of the reference signals generated by the reference signal generators (34a, 34b) are made always equal by the action of equipotential lines (40, 42).
    • 与电弧利用装置一起使用的电源装置包括具有相同容量的多个电源块(2a,2b)。 每个电源块(2a,2b)包括输入侧整流电路(4a,4b),反相器(10a,10b),变压器(12a,12b)和输出侧整流电路 侧整流电路(18a,18b)。 逆变器(10a,10b)由控制电路(30A,30b)控制,使得流过逆变器(10a,10b)的高频电流或流过输出侧整流的电流 电路(18a,18b)可以对应于由参考信号发生器(34a,34b)提供的参考信号。 电源块的输出侧整流电路(18a,18b)的输出端彼此并联连接。 由参考信号发生器(34a,34b)生成的参考信号的值通过等电位线(40,42)的作用总是相等。
    • 14. 发明申请
    • Power supply apparatus
    • 电源设备
    • US20070210736A1
    • 2007-09-13
    • US11712679
    • 2007-02-28
    • Hideo IshiiToru Arai
    • Hideo IshiiToru Arai
    • H02H7/08
    • H05K7/20209H02M3/00
    • A power supply unit includes an input-side rectifying circuit (4), an inverter (8) and an output-side rectifying circuit (12), which include power semiconductor devices. The power supply unit is powered during a powering period, and the powering is interrupted during a pausing period. The powering and pausing periods alternate. A fan (18) is driven during each powering period to cool the power semiconductor devices. A temperature detector (30) measures the temperature of the power semiconductor devices and develops a measured-temperature representative signal. A setter (38) produces a reference value, which decreases over the pausing period from the measured-temperature representative signal at the beginning of the pausing period to an intended-temperature representative signal representing the temperature to be attained by the power semiconductor devices at the end of the pausing period. The reference value is prepared from the measured-temperature representative signal at the beginning of the pausing period, the intended-temperature representative signal, and the length of the pausing period. An error amplifier (36) and a fan control unit (22) control the rotation rate of the fan (18) to make the measured-temperature representative signal track the reference value.
    • 电源单元包括输入侧整流电路(4),反相器(8)和输出侧整流电路(12),其包括功率半导体器件。 电源单元在供电期间供电,并且在暂停期间中断供电。 供电和暂停时段交替使用。 在每个供电周期期间驱动风扇(18)以冷却功率半导体器件。 温度检测器(30)测量功率半导体器件的温度并产生测量温度的代表信号。 设定器(38)产生参考值,其在暂停期间从测量温度代表信号在暂停期开始时减小到预期温度代表信号,该预期温度代表信号表示功率半导体器件在 暂停期结束。 参考值由暂停期开始时的测量温度代表信号,预期温度代表信号和暂停时间段的长度来制备。 误差放大器(36)和风扇控制单元(22)控制风扇(18)的旋转速度,使得测量温度代表信号跟踪参考值。
    • 16. 发明授权
    • Casting apparatus
    • 铸造设备
    • US06935407B2
    • 2005-08-30
    • US10360359
    • 2003-02-07
    • Kunio ShikataYoshiaki KomuroMasayuki OnoKumiko KuroharaHideo Ishii
    • Kunio ShikataYoshiaki KomuroMasayuki OnoKumiko KuroharaHideo Ishii
    • B22D37/00
    • B22D37/00
    • A casting apparatus has a melting pot (4) in which pieces of metal (8) to be melted is placed. A RF induction heater coil (10) is disposed in association with the melting pot (4) to heat the metal pieces (8). An inverter (18) supplies the coil (10) with high-frequency power to melt the metal pieces (8) in the melting pot (4), and the resulting molten metal is poured into a die (6). A control unit (36), after all of the metal pieces (8) having various sizes and shapes are melted, causes the operation of the inverter (18) to continue for a first time period and, after that, to suspend the operation of the inverter (18) for a second time period so that the heating can be stopped. After that, the control unit (36) causes the inverter (18) to resume its operation to heat the melted metal (8) in the melting pot (4) until the molten metal (8) assumes a predetermined state and, a third predetermined time after that, operates a melting pot driver (9) to cause the molten metal (8) to be poured into the die (6).
    • 铸造装置具有熔化锅(4),待熔化的金属(8)被放置。 RF感应加热器线圈(10)与熔炉(4)相关联地设置以加热金属片(8)。 逆变器(18)向线圈(10)提供高频电力以熔化熔池(4)中的金属片(8),并将所得到的熔融金属倒入模具(6)中。 在具有各种尺寸和形状的所有金属片(8)熔化之后,控制单元(36)使逆变器(18)的操作第一时间持续,然后暂停操作 逆变器(18)第二时间段,使得能够停止加热。 之后,控制单元(36)使逆变器(18)恢复其操作,以加热熔炉(4)中的熔融金属(8),直到熔融金属(8)呈现预定状态,并且第三预定 之后,操作熔炉驱动器(9)以使熔融金属(8)注入模具(6)中。
    • 18. 发明授权
    • DC power supply apparatus
    • 直流电源装置
    • US5926381A
    • 1999-07-20
    • US159485
    • 1998-09-23
    • Haruo MoriguchiToru AraiToshikazu FujiyoshiMasayuki OnoSatoshi HamadaHideo Ishii
    • Haruo MoriguchiToru AraiToshikazu FujiyoshiMasayuki OnoSatoshi HamadaHideo Ishii
    • H02M3/28H02M3/335H02M7/25H02M7/5387
    • H02M7/5387H02M7/25
    • A DC power supply apparatus includes an input-side rectifier which rectifies an input AC voltage and supplies the rectified voltage to a voltage-boosting converter. The voltage-boosting converter converts the supplied voltage to a voltage of a predetermined magnitude. The predetermined magnitude voltage is, then, converted to a high-frequency voltage by an inverter and applied to a primary winding of a transformer. An output-side rectifier rectifies a high-frequency voltage induced in a secondary winding of the transformer. The inverter includes IGBTs and diodes, which are connected in a full-bridge configuration. A capacitor is connected in parallel with each IGBT. When the IGBTs are rendered conductive by the charging and discharging of the capacitors, no current flows through the IGBTs, and when the IGBTs are rendered nonconductive, the voltages applied to the IGBTs are made to become zero.
    • 直流电源装置包括输入侧整流器,其对输入的交流电压进行整流,并将整流的电压提供给升压转换器。 升压转换器将所提供的电压转换成预定大小的电压。 然后,通过逆变器将预定的幅度电压转换成高频电压并施加到变压器的初级绕组。 输出侧整流器对变压器次级绕组感应的高频电压进行整流。 逆变器包括以全桥配置连接的IGBT和二极管。 电容器与每个IGBT并联连接。 当通过电容器的充放电导致IGBT导通时,IGBT中不会流过电流,当IGBT变为不导通时,施加于IGBT的电压为零。