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公开(公告)号：US5457300A
公开(公告)日：1995-10-10
申请号：US285002
申请日：1994-08-02
CPC分类号： B23K9/0956
摘要： An inverter controlled DC arc welder of consumable electrode type includes an input rectifier for rectifying AC input power, an inverter for converting the rectifier output to high frequency AC power, an output transformer for stepping down the inverter output voltage, and an output rectifier for rectifying the transformer output voltage to provide a DC output voltage to be applied to a welder load. The welder further includes means for detecting current flowing through the welder load to produce a detection signal, a differentiator circuit for differentiating the detection signal, and correction means for correcting a predetermined reference voltage in accordance with the differentiator output voltage. Feedback control means controls the inverter in accordance with the difference between the transformer output and the corrected reference voltage.
摘要翻译： 一种易损电极类型的逆变器控制直流电弧焊机，包括用于整流交流输入电源的输入整流器，用于将整流器输出转换为高频交流电的逆变器，用于降低逆变器输出电压的输出变压器，以及用于整流的输出整流器 变压器输出电压提供要施加到焊机负载的直流输出电压。 焊机还包括用于检测流过焊机负载的电流以产生检测信号的装置，用于区分检测信号的微分电路和用于根据微分器输出电压校正预定参考电压的校正装置。 反馈控制装置根据变压器输出与校正参考电压之间的差异来控制变频器。
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2.发明授权Arc welder with timed control of arcing recovery and means for reducing weight, size, and power loss in the welder 失效具有电弧恢复定时控制的弧焊机，以及减少焊机重量，尺寸和功率损耗的手段
公开(公告)号：US5343017A
公开(公告)日：1994-08-30
申请号：US120049
申请日：1993-09-13
CPC分类号： B23K9/0738 , B23K9/0731 , Y02P70/181
摘要： An arc welder provided with a low frequency square waveform a.c. power supply as a main power supply for welding in order to improve its power of recovering an arc which may go out at the time of polarity transition of a welding load and an auxiliary d.c. power supply for super-posing its output upon the input of the main power supply to further improve the recovering power, in which a switching element is inserted in a supply path of the output of the auxiliary d.c. power supply and the switching element is put in conduction by a suitable control device only for a necessary shortest arc recovery time in order to reduce a power loss due to continuous supply of the auxiliary d.c. output. The welder may include a diode which is put in conduction in response to an excessive transient voltage induced at the input of an invertor of the main power supply at the time of polarity transition of the welding load and, in order to prevent excessive charge of the capacitor in this case, the conduction time of the switching element may be extended to discharge an excess charge through the switching element to the invertor when a voltage across the capacitor exceeds a predetermined value.
摘要翻译： 弧焊机提供低频方波形a.c。 电源作为焊接的主要电源，以提高其恢复在焊接负载和辅助直流极性转变时可能熄灭的电弧的功率。 用于在主电源的输入端超高输出的电源，以进一步提高恢复功率，其中开关元件插入辅助直流输出的供电路径中。 电源和开关元件由合适的控制装置导通，只需要最短的电弧恢复时间，以减少由于辅助直流电的连续供电导致的功率损耗。 输出。 焊机可以包括二极管，其响应于在焊接负载的极性转变时在主电源的逆变器的输入处感应到的过大的瞬态电压而被导通，并且为了防止 电容器在这种情况下，当电容器两端的电压超过预定值时，开关元件的导通时间可以延长以通过开关元件将过量的电荷放电到逆变器。
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公开(公告)号：US5643475A
公开(公告)日：1997-07-01
申请号：US554657
申请日：1995-11-08
CPC分类号： B23K10/00
摘要： A power supply apparatus for a plasma arc cutter includes an inverter which converts DC power to high-frequency power. An output developing circuit rectifies and smooths the high-frequency power for application between a torch electrode and a workpiece which form together a plasma load. A current detecting unit detects current flowing through the plasma load. A reference signal generating unit generates a reference signal including a preset DC signal and a predetermined AC signal superposed on the DC signal. A control units control the inverter, in accordance with the difference between the output of the current detecting unit and the reference signal, so that the output current to be supplied between the electrode and the workpiece has a predetermined constant DC current and a predetermined AC current superposed on the DC current.The reference signal generating unit can vary the frequency and amplitude of the AC signal in the reference signal.
摘要翻译： 用于等离子体电弧刀的电源装置包括将直流电力转换为高频电力的逆变器。 输出显影电路整流和平滑用于焊接电极和工件之间的等离子体负载的高频功率。 电流检测单元检测流过等离子体负载的电流。 参考信号产生单元生成包括预置的DC信号和叠加在DC信号上的预定AC信号的参考信号。 控制单元根据电流检测单元的输出与参考信号的差异来控制逆变器，使得在电极和工件之间提供的输出电流具有预定的恒定直流电流和预定的交流电流 叠加在直流电流上。 参考信号生成单元可以改变参考信号中的AC信号的频率和幅度。
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公开(公告)号：US5630952A
公开(公告)日：1997-05-20
申请号：US579254
申请日：1995-12-27
CPC分类号： H05H1/36
摘要： A plasma-arc power supply apparatus includes a main electrode terminal, a nozzle electrode terminal and a workpiece terminal which are respectively coupled to a main electrode, a nozzle electrode and a workpiece of a plasma-arc apparatus. A DC power supply has its first output terminal coupled to the main electrode terminal, and a second output terminal. A pilot arc path is coupled between the second output terminal and the nozzle electrode terminal. A switch is connected in the pilot arc path. A plasma-arc path is coupled between the second output terminal and the workpiece terminal. A current detector has its first input coupled to the plasma-arc path, has its second input coupled to the pilot arc path, and produce a detection signal corresponding to the values of pilot arc and plasma-arc currents in the pilot arc and and plasma-arc paths, respectively. When the pilot arc current is flowing, a control unit closes the switch and controls current from the DC power supply in accordance with the difference between detection signal and a predetermined pilot arc reference signal, and when the plasma-arc current is flowing, the control unit opens the switch and controls current from the DC power supply in accordance with the difference between the detection signal and a predetermined plasma-arc signal.
摘要翻译： 等离子弧电源装置包括主电极端子，喷嘴电极端子和工件端子，它们分别连接到等离子体电弧装置的主电极，喷嘴电极和工件。 直流电源具有与主电极端子耦合的第一输出端子和第二输出端子。 引弧步骤连接在第二输出端和喷嘴电极端之间。 开关连接在导电弧路径中。 等离子体电弧路径耦合在第二输出端子和工件端子之间。 电流检测器具有耦合到等离子体电弧路径的第一输入端，其第二输入端耦合到先导电弧路径，并且产生对应于导向电弧中的导电电弧和等离子体电弧电流值的检测信号和等离子体 -arc路径。 当导通电弧电流流动时，控制单元关闭开关并根据检测信号和预定的导频电弧参考信号之间的差异控制来自直流电源的电流，并且当等离子体电弧电流流动时，控制 单元打开开关并根据检测信号和预定的等离子体电弧信号之间的差异控制来自直流电源的电流。
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公开(公告)号：US5942139A
公开(公告)日：1999-08-24
申请号：US009613
申请日：1998-01-20
CPC分类号： B23K9/1043 , B23K9/0956
摘要： DC power from a smoothing capacitor is converted into high frequency power by an inverter, and then lowered by an output transformer. The lowered high frequency power is converted into DC power by an output rectifier and a DC reactor, and then supplied to a load. The load is short-circuited and then opened to initiate arcing. The short-circuiting and the arcing alternate. An auxiliary rectifier provides a load-voltage representative signal, and a current detector detects a load current. A load-current representative signal is differentiated by a differentiation circuit. The signals from the auxiliary rectifier, the current detector and the differentiation circuit, and a reference signal are applied to an operational amplifier. A control circuit controls the inverter such that the output of the operational amplifier can be zero. An integration circuit receives at least the load-voltage representative signal to detect a period of a cycle consisting of the arcing and the short-circuiting and provide an operation-cycle-period representative signal to the operational amplifier.
摘要翻译： 来自平滑电容器的直流电力由逆变器转换为高频功率，然后由输出变压器降低。 降低的高频功率由输出整流器和直流电抗器转换为直流电力，然后提供给负载。 负载短路，然后打开以启动电弧。 短路和电弧交替。 辅助整流器提供负载电压代表信号，电流检测器检测负载电流。 负载电流代表信号由微分电路区分。 来自辅助整流器，电流检测器和微分电路的信号以及参考信号被施加到运算放大器。 控制电路控制逆变器，使得运算放大器的输出可以为零。 积分电路至少接收负载电压代表信号，以检测由电弧和短路组成的周期的周期，并向运算放大器提供操作周期代表信号。
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公开(公告)号：US5877952A
公开(公告)日：1999-03-02
申请号：US954816
申请日：1997-10-21
CPC分类号： B23K9/0678
摘要： Power supply apparatus includes a converter which converts a commercial AC voltage into a DC voltage. An inverter converts the DC voltage into a high frequency voltage. The high frequency voltage is voltage-transformed by a transformer, and then rectified and smoothed by a rectifier and a smoothing reactor into a DC voltage. This DC voltage is applied between a workpiece and a torch. A high frequency voltage generator generates a high frequency voltage and applies it to a primary winding of a coupling transformer. A boosted high frequency voltage is induced in a first secondary winding and applied between the workpiece and the torch, so that arcing is initiated. The coupling transformer includes a second secondary winding in which another high frequency voltage is induced. The high frequency voltage induced in the second secondary winding is converted into a DC voltage by a diode and a smoothing capacitor for application between the workpiece and the torch, so that the arcing is sustained.
摘要翻译： 电源装置包括将商用AC电压转换成DC电压的转换器。 逆变器将直流电压转换成高频电压。 高频电压由变压器进行电压转换，然后由整流器和平滑电抗器整流并平滑成直流电压。 该直流电压施加在工件和割炬之间。 高频电压发生器产生高频电压并将其施加到耦合变压器的初级绕组。 在第一次级绕组中感应出升高的高频电压，并施加在工件和割炬之间，从而启动电弧。 耦合变压器包括其中引入另一高频电压的第二次级绕组。 在第二次级绕组中感应的高频电压通过二极管和平滑电容器转换成直流电压，用于工件和焊炬之间的应用，从而保持电弧。
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公开(公告)号：US5751568A
公开(公告)日：1998-05-12
申请号：US758691
申请日：1996-12-03
CPC分类号： B23K9/1056 , H02M7/48
摘要： A power supply apparatus for arc-utilizing equipment includes a first converter for converting a received AC voltage to a DC voltage. An inverter converts the DC voltage to a high-frequency voltage, which is applied to a voltage-transformer with primary and second windings. A voltage-transformed high-frequency voltage induced in the secondary winding is converted to a DC voltage in a second converter, which is developed between two output terminals. The respective ones of the two output terminals are connected to a torch electrode of the arc-utilizing equipment and a workpiece. A bypass capacitor and a high-frequency voltage generator circuit are serially connected between the two output terminals. A control circuit controls the high-frequency voltage generator circuit and the inverter circuit. The bypass capacitor is connected directly between one of the two output terminals and the high-frequency voltage generator circuit.
摘要翻译： 用于电弧利用设备的电源装置包括用于将接收的AC电压转换为DC电压的第一转换器。 逆变器将直流电压转换为施加到具有初级和第二绕组的电压互感器的高频电压。 在次级绕组中感应的电压变换的高频电压被转换成在两个输出端之间产生的第二转换器中的直流电压。 两个输出端子中的相应的端子连接到电弧利用设备的炬电极和工件。 旁路电容器和高频电压发生器电路串联连接在两个输出端子之间。 控制电路控制高频电压发生器电路和逆变器电路。 旁路电容器直接连接在两个输出端子之一和高频电压发生器电路之间。
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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：US08664566B2
公开(公告)日：2014-03-04
申请号：US11422624
申请日：2006-06-07
申请人： Hideo Ishii , Tetsuro Ikeda , Kenzo Danjo , Atsushi Kinoshita
发明人： Hideo Ishii , Tetsuro Ikeda , Kenzo Danjo , Atsushi Kinoshita
IPC分类号： B23K9/10
CPC分类号： B23K9/0673 , B23K9/167
摘要： An arc welding apparatus includes a main power supply circuit for outputting an arc current, a control circuit for controlling the main power supply circuit, and a high-frequency voltage generating circuit for generating a high-frequency voltage. When an operation switch is turned on for a first time since the apparatus is powered on, the control circuit activates the main power supply circuit to output a high voltage, and the high-frequency voltage generating circuit to generate a high-frequency voltage. With the high voltage superimposed on the high-frequency voltage, the control circuit passes a welding arc current through a torch and a base material. The switch is then turned off, and the control circuit passes a pilot arc current through the torch and the base material. The switch is turned on again, and the control circuit activates the main power supply circuit to output a high voltage, thereby allowing smooth arc transition.
摘要翻译： 一种电弧焊接装置，包括用于输出电弧电流的主电源电路，用于控制主电源电路的控制电路和用于产生高频电压的高频电压发生电路。 当操作开关从设备通电开始第一次时，控制电路激活主电源电路以输出高电压，高频电压产生电路产生高频电压。 由于高电压叠加在高频电压上，控制电路通过焊炬和基材使焊接电弧电流通过。 然后关闭开关，并且控制电路通过导电电弧电流通过焊炬和基材。 开关再次接通，控制电路激活主电源电路输出高电压，从而实现平滑的电弧转换。
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公开(公告)号：US20070284349A1
公开(公告)日：2007-12-13
申请号：US11422624
申请日：2006-06-07
申请人： Hideo Ishii , Tetsuro Ikeda , Kenzo Danjo , Atsushi Kinoshita
发明人： Hideo Ishii , Tetsuro Ikeda , Kenzo Danjo , Atsushi Kinoshita
IPC分类号： B23K9/06
CPC分类号： B23K9/0673 , B23K9/167
摘要： An arc welding apparatus includes a main power supply circuit for outputting an arc current, a control circuit for controlling the main power supply circuit, and a high-frequency voltage generating circuit for generating a high-frequency voltage. When an operation switch is turned on for a first time since the apparatus is powered on, the control circuit activates the main power supply circuit to output a high voltage, and the high-frequency voltage generating circuit to generate a high-frequency voltage. With the high voltage superimposed on the high-frequency voltage, the control circuit passes a welding arc current through a torch and a base material. The switch is then turned off, and the control circuit passes a pilot arc current through the torch and the base material. The switch is turned on again, and the control circuit activates the main power supply circuit to output a high voltage, thereby allowing smooth arc transition.
摘要翻译： 一种电弧焊接装置，包括用于输出电弧电流的主电源电路，用于控制主电源电路的控制电路和用于产生高频电压的高频电压发生电路。 当操作开关从设备通电开始第一次时，控制电路激活主电源电路以输出高电压，高频电压产生电路产生高频电压。 由于高电压叠加在高频电压上，控制电路通过焊炬和基材使焊接电弧电流通过。 然后关闭开关，并且控制电路通过导电电弧电流通过焊炬和基材。 开关再次接通，控制电路激活主电源电路输出高电压，从而实现平滑的电弧转换。
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