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公开(公告)号：US06069811A
公开(公告)日：2000-05-30
申请号：US212159
申请日：1998-12-15
申请人： Haruo Moriguchi , Toru Arai , Tetsuro Ikeda , Toshikazu Fujiyoshi , Masayuki Ono , Hideo Ishii
发明人： Haruo Moriguchi , Toru Arai , Tetsuro Ikeda , Toshikazu Fujiyoshi , Masayuki Ono , Hideo Ishii
IPC分类号： B23K9/073 , H02H7/125 , H02H9/00 , H02M1/08 , H02M3/155 , H02M3/28 , H02M3/337 , H02M7/12 , H02M7/217 , H02M1/10
CPC分类号： H02M1/4225 , H02H7/1257 , H02M3/337 , H02H9/001 , H02M1/32 , H02M1/36
摘要： A DC power supply apparatus includes a rectifier circuit which rectifies an input commercial AC voltage. The rectifier output voltage is smoothed in a smoothing capacitor. The DC voltage from the capacitor is converted to a high-frequency voltage in an inverter. The high-frequency voltage from the inverter is voltage-transformed by a transformer into a voltage-transformed, high-frequency voltage, which is then converted back into a DC voltage in a high-frequency-to-DC converter circuit. When an input commercial AC voltage is applied to the DC power supply apparatus, a pre-charging circuit pre-charges the smoothing capacitor from the input AC voltage. If a voltage having a magnitude larger than a prescribed value is applied to the DC power supply apparatus, an overvoltage protection circuit renders the rectifier circuit and the pre-charging circuit inoperative.
摘要翻译： 直流电源装置包括整流电路，其对输入的商用交流电压进行整流。 整流器输出电压在平滑电容器中平滑化。 来自电容器的直流电压在逆变器中转换成高频电压。 来自变频器的高频电压由变压器电压转换为电压变换的高频电压，然后将其转换回高频至直流转换电路中的直流电压。 当输入商用交流电压被施加到直流电源装置时，预充电电路从输入的交流电压对平滑电容器进行预充电。 如果将具有大于规定值的电压的电压施加到直流电源装置，则过电压保护电路使整流电路和预充电电路不起作用。
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公开(公告)号：US5926381A
公开(公告)日：1999-07-20
申请号：US159485
申请日：1998-09-23
申请人： Haruo Moriguchi , Toru Arai , Toshikazu Fujiyoshi , Masayuki Ono , Satoshi Hamada , Hideo Ishii
发明人： Haruo Moriguchi , Toru Arai , Toshikazu Fujiyoshi , Masayuki Ono , Satoshi Hamada , Hideo Ishii
IPC分类号： H02M3/28 , H02M3/335 , H02M7/25 , H02M7/5387
CPC分类号： H02M7/5387 , H02M7/25
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US5930122A
公开(公告)日：1999-07-27
申请号：US152017
申请日：1998-09-11
申请人： Haruo Moriguchi , Toru Arai , Toshikazu Fujiyoshi , Masayuki Ono , Satoshi Hamada , Hideo Ishii
发明人： Haruo Moriguchi , Toru Arai , Toshikazu Fujiyoshi , Masayuki Ono , Satoshi Hamada , Hideo Ishii
CPC分类号： H02M3/285 , H02M1/10 , H02M3/33569 , H02M2001/0074
摘要： An inverter includes a series circuit of two current conducting units connected between two input terminals adapted to be connected to a DC power supply. Two first capacitors are connected in series between the two input terminals. A primary winding of a transformer is connected between the junction of the current conducting units and the junction of the first capacitors. Each of the current conducting units includes a parallel circuit of an IGBT, a diode and a second capacitor. The IGBT has a collector, an emitter and a gate and is rendered conductive when a control signal is applied to the gate while a voltage of a predetermined polarity is applied between the collector and the emitter. The diode is connected in inverse parallel with the IGBT. An inverter control circuit applies alternately the control signals to the respective IGBTs with a predetermined quiescent period disposed between the respective control signals applied.
摘要翻译： 逆变器包括连接在适于连接到直流电源的两个输入端之间的两个导电单元的串联电路。 两个第一电容器串联连接在两个输入端子之间。 变压器的初级绕组连接在电流传导单元的接头和第一电容器的接点之间。 每个电流传导单元包括IGBT，二极管和第二电容器的并联电路。 IGBT具有集电极，发射极和栅极，并且当在集电极和发射极之间施加预定极性的电压时，控制信号施加到栅极时导通。 二极管与IGBT反向并联连接。 逆变器控制电路将控制信号交替地施加到各个IGBT，其中预定的静态周期设置在施加的各个控制信号之间。
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公开(公告)号：US6054674A
公开(公告)日：2000-04-25
申请号：US231892
申请日：1999-01-14
申请人： Haruo Moriguchi , Tetsuro Ikeda , Toshikazu Fujiyoshi , Kenzo Danjo , Kunio Karino , Hideo Ishii
发明人： Haruo Moriguchi , Tetsuro Ikeda , Toshikazu Fujiyoshi , Kenzo Danjo , Kunio Karino , Hideo Ishii
CPC分类号： B23K9/1043
摘要： An AC voltage applied among power input supply terminals is rectified by a rectifier, and the rectified voltage is adapted to be reduced in a voltage-reducing converter with a switch connected in parallel with it. A switching circuit connect smoothing capacitors in series or parallel to the voltage-reducing converter. Inverters are connected in parallel with the respective smoothing capacitors. The output voltages of the inverters are voltage-transformed by transformers. The transformed voltages from the transformers are converted to DC voltages by converters. A control unit renders the voltage-reducing converter operative and causes the switching circuit to connect the smoothing capacitors in series when a third AC voltage is applied among the power supply input terminals. When a second AC voltage lower than the third AC voltage is applied among the power supply input terminals, the control unit causes the switch connected in parallel with the voltage-reducing converter to be closed and causes the switching circuit to connect the smoothing capacitors in series. If a first AC voltage about one-half as high as the second AC voltage is applied, the control unit causes the switch to be closed and causes the switching circuit to connect the smoothing capacitors in parallel.
摘要翻译： 电源输入电源端子之间施加的交流电压由整流器整流，并且整流后的电压适于在降压转换器中减少，开关与其并联连接。 开关电路将平滑电容器与降压转换器串联或并联连接。 逆变器与各个平滑电容器并联连接。 逆变器的输出电压由变压器进行电压转换。 变压器的变换电压通过转换器转换为直流电压。 当在电源输入端子之间施加第三交流电压时，控制单元使电压降低转换器工作并使开关电路串联连接平滑电容器。 当在电源输入端子之间施加低于第三交流电压的第二交流电压时，控制单元使与降压转换器并联的开关闭合，并使开关电路串联连接平滑电容器 。 如果施加大约为第二交流电压的一半的第一交流电压，则控制单元使开关闭合，并使开关电路并联连接平滑电容器。
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公开(公告)号：US6051806A
公开(公告)日：2000-04-18
申请号：US236703
申请日：1999-01-25
申请人： Kunio Shikata , Masayuki Ono , Masao Katooka , Haruo Moriguchi , Tetsuro Ikeda , Kenzo Danjo , Atsushi Kinoshita , Fumi Noda , Hideo Ishii
发明人： Kunio Shikata , Masayuki Ono , Masao Katooka , Haruo Moriguchi , Tetsuro Ikeda , Kenzo Danjo , Atsushi Kinoshita , Fumi Noda , Hideo Ishii
CPC分类号： B23K9/0956
摘要： A power supply apparatus for welders includes an input-side AC-to-DC converter for converting an input commercial AC voltage into a DC voltage, which is, in turn, converted to a high-frequency voltage in an inverter. The high-frequency voltage is transformed to a high-frequency voltage having a desired magnitude in a transformer. The transformed high-frequency voltage is then converted back to a DC voltage in an output-side high-frequency-to-DC converter. The DC voltage is developed between output terminals of the power supply apparatus. A current detector detects the current flowing through the output terminals and develops a detected-current representative signal. A voltage detector detects the voltage between the output terminals and develops a detected-voltage representative signal. A CPU has three control modes and controls, in a first mode, the inverter in such a manner that the current representative signal becomes equal to a reference-current representative signal. In a second mode, the CPU activates and, then, deactivates a high-frequency generator, which provides a high-frequency voltage between the output terminals, and, thereafter, performs the first mode of control. In a third control mode, the CPU controls the inverter in such a manner that the voltage representative signal becomes equal to a reference-voltage representative signal and also controls a wire feeder for feeding a wire to be connected to one of the output terminals.
摘要翻译： 一种用于焊接机的电源装置包括：输入侧AC-DC转换器，用于将输入的商用AC电压转换成直流电压，然后转换成逆变器中的高频电压。 在变压器中将高频电压变换成具有期望幅度的高频电压。 然后将变换的高频电压转换回输出侧高频至直流转换器中的直流电压。 在电源装置的输出端子之间产生直流电压。 电流检测器检测流过输出端子的电流并产生检测到的电流代表信号。 电压检测器检测输出端子之间的电压并产生检测到的电压代表信号。 CPU在第一模式中具有三种控制模式和控制，即逆变器使得当前代表信号变得等于参考电流代表信号。 在第二模式中，CPU激活并且然后去激活在输出端之间提供高频电压的高频发生器，之后执行第一控制模式。 在第三控制模式中，CPU以这样的方式控制逆变器，使得代表性的代表信号变得等于参考电压代表信号，并且还控制用于馈送要连接到一个输出端子的导线的送丝机。
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公开(公告)号：US5917711A
公开(公告)日：1999-06-29
申请号：US198420
申请日：1998-11-24
申请人： Kunio Shikata , Haruo Moriguchi , Tetsuro Ikeda , Kenzo Danjo , Takeshi Omura , Hideo Ishii
发明人： Kunio Shikata , Haruo Moriguchi , Tetsuro Ikeda , Kenzo Danjo , Takeshi Omura , Hideo Ishii
CPC分类号： H02M3/33569 , H02M2001/0009
摘要： DC power supply apparatus includes an input-side rectifier for converting an AC signal from an AC power supply into a DC signal. A DC-to-high-frequency converter converts the DC signal into a high frequency signal in response to a control signal from a control unit. An output-side rectifier converts the high frequency signal into a DC signal and applies it to a load. An input current detector detects an input current flowing through the input-side rectifier and generates a signal representative of the input current. A load current detector detects a load current flowing through the load and generates a signal representative of the load current. The control unit receives the input-current and load-current representative signals, a reference input current signal and a reference load current signal, and provides the DC-to-high-frequency converter with the control signal such that the input-current representative signal can be equal to the reference input current signal and the load-current representative signal can be equal to the reference load current signal.
摘要翻译： 直流电源装置包括用于将来自AC电源的AC信号转换为DC信号的输入侧整流器。 DC到高频转换器响应于来自控制单元的控制信号将DC信号转换成高频信号。 输出侧整流器将高频信号转换为直流信号并将其施加到负载。 输入电流检测器检测流过输入侧整流器的输入电流并产生表示输入电流的信号。 负载电流检测器检测流过负载的负载电流并产生代表负载电流的信号。 控制单元接收输入电流和负载电流代表信号，参考输入电流信号和参考负载电流信号，并向DC到高频转换器提供控制信号，使得输入电流代表信号 可以等于参考输入电流信号，负载电流代表信号可以等于参考负载电流信号。
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公开(公告)号：US06498320B2
公开(公告)日：2002-12-24
申请号：US09999023
申请日：2001-11-15
申请人： Haruo Moriguchi , Tetsuro Ikeda , Hideo Ishii
发明人： Haruo Moriguchi , Tetsuro Ikeda , Hideo Ishii
IPC分类号： B23K910
CPC分类号： B23K9/1056
摘要： One of commercial AC voltages is coupled to power supply terminals from one of commercial AC power supplies. The AC power supplies belong to either a first group providing higher voltages or a second group providing lower voltages. A rectifier rectifies the AC voltage applied to the power supply terminals, and a rectified voltage is developed between two rectifier output terminals. A switching unit operates to connect voltage-boosting converters selectively in series and in parallel between the rectifier output terminals. Inverters are connected in the output sides of and in association with the respective voltage-boosting converters for converting DC voltages from the associated voltage-boosting converters to high-frequency voltages. The high-frequency voltages are voltage-transformed by associated voltage-transformers, and the voltage-transformed high-frequency voltages are converted into a DC voltage by a rectifier circuit and a reactor. The DC voltage is developed between output terminals of the apparatus. A switching control unit controls the switching unit so as to connect the voltage-boosting converters in series between the rectifier output terminals when a commercial AC power supply of the first group is connected to the power supply terminals, while connecting the voltage-boosting converters in parallel between the rectifier output terminals when a commercial AC power supply of the second group is connected to the power supply terminals.
摘要翻译： 商用交流电压之一与商用交流电源之一的电源端子耦合。 交流电源属于提供较高电压的第一组或提供较低电压的第二组。 整流器对施加到电源端子的交流电压进行整流，并在两个整流器输出端子之间产生整流电压。 开关单元用于将升压转换器选择性地串联并联在整流器输出端子之间。 逆变器连接在相应的升压转换器的输出侧并与之相关联，用于将来自相关升压转换器的直流电压转换成高频电压。 高压电压由相关的电压互感器进行电压转换，并且通过整流电路和电抗器将电压变换的高频电压转换成直流电压。 在设备的输出端之间产生直流电压。 开关控制单元控制开关单元，以将第一组的商用AC电源连接到电源端子时将整流器输出端子之间的升压转换器串联连接，同时将升压转换器 当第二组的商用交流电源连接到电源端子时，整流器输出端子之间并联。
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公开(公告)号：US06278080B1
公开(公告)日：2001-08-21
申请号：US09440053
申请日：1999-11-18
申请人： Haruo Moriguchi , Tetsuro Ikeda , Atsushi Kinoshita , Hideo Ishii
发明人： Haruo Moriguchi , Tetsuro Ikeda , Atsushi Kinoshita , Hideo Ishii
IPC分类号： B23K910
CPC分类号： H05K7/20209 , B23K9/1056 , H02M1/36 , H02M3/3376 , H02M2001/008
摘要： A power supply apparatus includes a power supply unit disposed within a casing. The power supply unit includes power semiconductor devices. A fan is provided in the casing for cooling the power semiconductor devices. The power supply unit is operated in a plurality of contiguous cycles each including a running and pausing modes of operation. Each cycle lasting a relatively short time period. The power supply unit operates in the running mode and the pausing mode, respectively in response to the closing and opening of a start switch. In association with the closing and opening of the start switch, a switch for the cooling fan causes the fan to rotate and stop, respectively, which results in minimizing the difference between the highest and lowest temperatures of the power semiconductor devices so that the lifetime of the power semiconductor devices can be prolonged.
摘要翻译： 电源装置包括设置在壳体内的电源单元。 电源单元包括功率半导体器件。 壳体中设置有用于冷却功率半导体器件的风扇。 电源单元以多个连续周期操作，每个循环包括运行和暂停操作模式。 每个周期的持续时间相对较短。 电源单元响应于启动开关的闭合和打开而分别在运行模式和暂停模式下操作。 与启动开关的关闭和打开相关联，用于冷却风扇的开关分别使风扇旋转和停止，这导致功率半导体器件的最高和最低温度之间的差异最小化，使得寿命 可以延长功率半导体器件。
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公开(公告)号：US5306894A
公开(公告)日：1994-04-26
申请号：US25775
申请日：1993-03-03
申请人： Haruo Moriguchi , Tetsurou Ikeda , Kenzo Danjo , Toshikazu Fujiyoshi , Masahiro Aoyama , Kunio Karino
发明人： Haruo Moriguchi , Tetsurou Ikeda , Kenzo Danjo , Toshikazu Fujiyoshi , Masahiro Aoyama , Kunio Karino
CPC分类号： B23K9/1056 , G05F1/08
摘要： An invertor controlled D.C. arc welder of consumable electrode type which is arranged to rectify an a.c. power from a commercial power supply, convert it into a high frequency a.c. power by an invertor, rectify it again to obtain a d.c. power output for welding and stabilize the output voltage by feedback control of the invertor based upon the output voltage and provided with means for discriminating shorting and arcing periods of its welding load from the output voltage and additionally controlling the invertor based upon a resultant discrimination signal to raise the output voltage during the early time of the arcing period, thereby preventing defective welding due to insufficient output current. This invention is especially, effective for supplementing such insufficient output current as an aftereffect of insufficient output power during the shortening period in such welder which is provided with means for reducing the output voltage during the shortening period to prevent generation of undesirable spattering.
摘要翻译： 一种易损电极类型的逆变器控制直流电弧焊机，其设置为对一个直流电源进行整流。 从商用电源供电，将其转换成高频率。 权力由逆变器，再次纠正获得一个d.c. 用于焊接的功率输出并且通过基于输出电压的逆变器的反馈控制来稳定输出电压，并且具有用于区分其焊接负载的短路和电弧周期与输出电压的装置，并且基于所得到的鉴别信号来控制逆变器 在电弧期的早期阶段提高输出电压，防止由于输出电流不足导致的焊接不良。 本发明特别有效地补充这种不足的输出电流，作为在这种焊接机的缩短期间输出功率不足的后果，其具有用于在缩短期间减小输出电压的装置，以防止产生不期望的飞溅。
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公开(公告)号：US5760372A
公开(公告)日：1998-06-02
申请号：US669993
申请日：1996-06-21
申请人： Kunio Karino , Haruo Moriguchi , Shigeru Okamoto , Kenzo Danjo , Atushi Kinoshita , Toshikazu Fujiyoshi
发明人： Kunio Karino , Haruo Moriguchi , Shigeru Okamoto , Kenzo Danjo , Atushi Kinoshita , Toshikazu Fujiyoshi
CPC分类号： B23K9/0956
摘要： An arc welder includes an inverter for converting a DC voltage to a RF voltage which, then, is rectified by a rectifier. The output of the rectifier is smoothed by a DC reactor. A RF generator provides RF current to flow between a workpiece and a main electrode of the welder forming a welder load, which initiates arcing between the workpiece and the main electrode. Initiation of arcing causes output current from the DC reactor to be supplied to the welder load, so that steady-state arcing is established. The DC reactor has a relatively small inductance which permit the output current from the DC reactor to reach a value required for establishing the steady-state arcing within a time period during which the RF generator provides RF current. The RF voltage from the inverter has a relatively high frequency so that the output current from the DC reactor can sustain the steady-state arcing.
摘要翻译： 电弧焊机包括用于将DC电压转换成RF电压的逆变器，然后由整流器整流。 整流器的输出由直流电抗器平滑。 RF发生器提供RF电流以在焊接工件的工件和主电极之间流动，形成焊接负载，其启动工件和主电极之间的电弧。 引起电弧会使直流电抗器的输出电流提供给焊机负载，从而建立稳态电弧。 DC电抗器具有相对小的电感，其允许来自DC电抗器的输出电流达到在RF发生器提供RF电流的时间段内建立稳态电弧所需的值。 来自逆变器的RF电压具有相对高的频率，使得来自DC电抗器的输出电流可以维持稳态电弧。
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