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    • 8. 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。
    • 9. 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。
    • 10. 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。