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    • 81. 发明申请
    • METHODS AND DEVICES FOR RESPONDING TO HIGH PRIMARY SUPPLY VOLTAGES OF WELDING SYSTEMS
    • 用于响应焊接系统高主要电源电压的方法和装置
    • US20110198330A1
    • 2011-08-18
    • US12946775
    • 2010-11-15
    • Craig Steven Knoener
    • Craig Steven Knoener
    • B23K9/095
    • B23K9/10B23K9/32B23K37/006H02M1/10
    • Methods and devices for controlling a welding power source based on a primary supply voltage level are provided. One method may include sensing activation of the welding power source and sensing a primary supply voltage established on a control transformer of the welding power source. The method may also include establishing a substantial current draw from a primary power supply that exceeds a predefined current threshold when the sensed primary supply voltage exceeds a predefined voltage threshold. The substantial current draw may be adapted to trip a circuit breaker of the welding power source to disallow current through the welding power source when the sensed primary supply voltage exceeds the predefined voltage threshold.
    • 提供了用于基于主电源电压电平来控制焊接电源的方法和装置。 一种方法可以包括感测激活焊接电源并感测在焊接电源的控制变压器上建立的初级电源电压。 该方法还可以包括当感测到的主电源电压超过预定电压阈值时,从主电源建立超过预定电流阈值的实际电流消耗。 当感测到的主电源电压超过预定义的电压阈值时,大体上的电流消耗可以适于使焊接电源的断路器跳闸以禁止通过焊接电源的电流。
    • 82. 发明申请
    • DC-DC CONVERTER
    • DC-DC转换器
    • US20110074379A1
    • 2011-03-31
    • US12792581
    • 2010-06-02
    • Yoshinobu MorimotoShinji Asakawa
    • Yoshinobu MorimotoShinji Asakawa
    • G05F3/08H02J9/00
    • H02M1/10Y10T307/625
    • A DC-DC converter including a power supply supplying direct current (DC) to an inductor, a switching device controlling the supply of DC from the power supply to the inductor by switching between a conductive state and a disconnected state according to a modulation signal, a signal output device generating the modulation signal for increasing or decreasing a period of the conductive state of the switching device, wherein the signal output device increases or decreases a duty ratio of the modulation signal to increase or decrease the period of the conductive state of the switching device, and a delay device controlling an increase of a duty ratio of the modulation signal, wherein the signal output device outputs the modulation signal with the controlled duty ratio to the switching device, thereby delaying the switching device from reaching a conductive state in which the duty ratio is a value of 1.
    • 一种DC-DC转换器,包括向电感器提供直流电的电源,开关装置,根据调制信号,通过在导通状态和断开状态之间切换来控制从电源向电感器的DC供电, 生成用于增加或减少开关装置的导通状态的周期的调制信号的信号输出装置,其中,所述信号输出装置增加或减少所述调制信号的占空比以增加或减少所述开关装置的导通状态的周期 切换装置,以及控制调制信号的占空比增加的延迟装置,其中信号输出装置将具有受控占空比的调制信号输出到开关装置,从而延迟开关装置达到导通状态,其中 占空比为1。
    • 84. 发明申请
    • METHOD AND DEVICE FOR LOWERING THE IMPEDANCE OF A FET (FIELD EFFECT TRANSISTOR)
    • 降低FET阻抗的方法和装置(场效应晶体管)
    • US20100253144A1
    • 2010-10-07
    • US11993701
    • 2006-06-23
    • Timothy D.F. FordBernard Moffett
    • Timothy D.F. FordBernard Moffett
    • H02J1/10
    • H03K3/012H02J7/0034H02M1/10H02M3/142Y10T307/50Y10T307/839
    • A low impedance polarity conversion circuit for driving a load with a DC power source is disclosed. The DC power source has a first pole from which a first DC signal originates and a second pole from which a second DC signal originates. The first DC signal has a voltage greater than a voltage of the second DC signal. The conversion circuit includes a circuit output node through which an output DC signal is delivered from the conversion circuit to the load. The conversion circuit also includes a charge conditioning circuit for generating third and fourth DC signals. The third DC signal has a voltage greater than the first DC signal voltage and the fourth DC signal has a voltage less than the second DC signal voltage. A rectification circuit includes first and second inputs for attachment to the first pole and the second pole. A Field-Effect Transistor (FET) bridge is electrically connected to the first and second inputs. The FET bridge includes first and second pairs of cooperating FETs. The third voltage controls a first of the first pair of FETs and a first of the second pair of FETs. The fourth voltage controls a second of the first pair of FETs and a second of the second pair of FETs. The FET bridge is for rectifying the first and second DC signals in order that the output DC signal is the same polarity irrespective of whether the first input is attached to the first pole or the second pole.
    • 公开了一种用直流电源驱动负载的低阻极性转换电路。 直流电源具有从其起始的第一直流信号的第一极和来自第二直流信号的第二极。 第一直流信号的电压大于第二直流信号的电压。 转换电路包括电路输出节点,通过该电路输出节点将输出DC信号从转换电路传送到负载。 转换电路还包括用于产生第三和第四DC信号的电荷调节电路。 第三直流信号的电压大于第一直流信号电压,第四直流信号的电压小于第二直流信号电压。 整流电路包括用于连接到第一极和第二极的第一和第二输入。 场效应晶体管(FET)桥与第一和第二输入电连接。 FET桥包括第一和第二对配合FET。 第三电压控制第一对FET中的第一个和第二对FET中的第一对。 第四电压控制第一对FET中的第二个和第二对FET中的第二对。 FET桥用于整流第一和第二DC信号,以便输出DC信号是相同的极性,而不管第一输入是连接到第一极还是第二极。
    • 86. 发明授权
    • Bi-polar bi-directional energy balancing power-conversion engine
    • 双极双向能量平衡电力转换引擎
    • US07786709B2
    • 2010-08-31
    • US11682169
    • 2007-03-05
    • Thomas E. LawsonWilliam H. Morong
    • Thomas E. LawsonWilliam H. Morong
    • G05F1/70H02M7/02
    • H02M7/44G05F1/10H02M1/10H02M3/04H02M3/158H02M3/1582H02M5/04H02M5/257H02M7/04H02M7/797
    • The invention provides a power converter and method for controlling same, comprising a plurality of switch elements, an inductive reactor, and at least two ports for the movement of electrical energy. Any energy-moving port may be made unipolar, bidirectional, bipolar, or bidirectionally bipolar. Ports may be equipped with sensing circuitry to allow the converter output to be controlled responsively to an input signal. The invention may be configured to be used in many ways, for example, as a power-supply, as an amplifier, or as a frequency converter. The invention may comprise energy predictive calculating means to obtain excellent transient response to line and load variations. The invention may also include a switch to create a low impedance path around the inductor to allow current to recirculate through the inductor when it is not needed at any of the ports.
    • 本发明提供一种功率转换器及其控制方法,包括多个开关元件,感应电抗器和用于电能移动的至少两个端口。 任何能量移动端口可以是单极的,双向的,双极的或双向的。 端口可以​​配备感测电路,以允许响应于输入信号控制转换器输出。 本发明可以被配置为以许多方式使用,例如作为电源,放大器或变频器。 本发明可以包括能量预测计算装置,以获得对线路和负载变化的优异瞬态响应。 本发明还可以包括用于在电感器周围产生低阻抗路径的开关,以允许电流在任何端口处不需要时通过电感器再循环。
    • 87. 发明授权
    • Dual input power supply
    • 双路输入电源
    • US07768153B2
    • 2010-08-03
    • US11370065
    • 2006-03-08
    • Chia Hua Wang
    • Chia Hua Wang
    • H02J7/00
    • H02M1/10H01F3/12H01F37/00Y10T307/625Y10T307/658
    • A dual input power supply is provided, which comprises a dual input, a connector, a power converter circuit and an output. The dual input has a first input and a second input. The connector is an integrated magnetic element used for integrating the input powers having different power signals from the first input and the second input. The power converter circuit comprises an AC-to-DC converter, a DC-to-DC converter, a feedback circuit and a filter circuit. In the present invention, the dual input uses a set of transformer coils or inductive coils, thus the size of the present power supply can be reduced.
    • 提供双输入电源,其包括双输入,连接器,功率转换器电路和输出。 双输入具有第一输入和第二输入。 连接器是用于集成来自第一输入和第二输入的具有不同功率信号的输入功率的集成磁性元件。 电力转换器电路包括AC-DC转换器,DC-DC转换器,反馈电路和滤波电路。 在本发明中,双输入使用一组变压器线圈或感应线圈,因此可以减小当前电源的尺寸。
    • 88. 发明申请
    • POWER SYSTEM HAVING AC AND DC POWER SOURCES
    • 具有交流和直流电源的电力系统
    • US20100188869A1
    • 2010-07-29
    • US12452658
    • 2007-07-26
    • Steven J. FredetteWesley E. Sedlacek, JR.
    • Steven J. FredetteWesley E. Sedlacek, JR.
    • H02J1/00
    • H02M1/10H01H2300/018Y10T307/544Y10T307/615
    • A power system (110; 210; 310) combines a power source (14) having a DC output (20A, 20B) with an AC supply from the AC grid (12) to provide AC to customer's loads (16) and DC to various DC auxiliary loads (134, 134A). The DC output of the DC power source (14) is connected in steady-state to the DC input (120A, 120B, 60) of a converter/bi-directional inverter (122; 222) for conversion therein to AC for connection (124, 124A, 32) to the customer's loads (16) and (124, 124B) to any AC auxiliary loads (134, 234). During start-up of the DC power source (14), an open isolation switch (70) disconnects that DC power source (14) from the bi-directional inverter (122; 222). A start-up power supply (50, 60; 250, 60; 90, 180, 60) selectively connects (56; 94) between the AC power grid (12) and the bi-directional inverter (122; 222) and/or DC controllers (134A) to provide a supply of rectified DC power at the inverter DC input and to certain DC auxiliary loads (134, 234). DC power is supplied to the auxiliary loads (134; 234) from the inverter DC input substantially continuously during start-up and steady state.
    • 电力系统(110; 210; 310)将具有DC输出(20A,20B)的电源(14)与来自AC电网(12)的AC电源组合,以向客户的负载(16)提供AC并将DC提供给各种 直流辅助负载(134,134A)。 直流电源(14)的直流输出端连接到转换器/双向逆变器(122; 222)的直流输入端(120A,120B,60),用于将其转换成用于连接的交流电(124) ,124A,32)连接到客户的负载(16)和(124,124B)到任何AC辅助负载(134,234)。 在DC电源(14)启动期间,开路隔离开关(70)将该直流电源(14)与双向逆变器(122; 222)断开。 启动电源(50,60; 250,60; 90,180,60)有选择地在交流电网(12)和双向逆变器(122; 222)之间连接(56; 94)和/或 DC控制器(134A),用于在逆变器DC输入端和某些DC辅助负载(134,234)处提供整流直流电源。 在启动和稳定状态期间,基本上连续地从逆变器DC输入向辅助负载(134; 234)提供直流电力。
    • 89. 发明授权
    • Method and apparatus to reduce the volume required for bulk capacitance in a power supply
    • 降低电源中体积电容所需体积的方法和装置
    • US07760524B2
    • 2010-07-20
    • US11873697
    • 2007-10-17
    • David Michael Hugh Matthews
    • David Michael Hugh Matthews
    • H02M1/15
    • H02M7/217H02M1/10H02M2001/0096
    • A driver circuit included in a power supply having a rectifier coupled to a single phase AC input voltage is disclosed. An example driver circuit includes a drive signal generator to generate a drive signal to be coupled to a variable impedance element. A voltage sensor is coupled to the drive signal generator and is to be coupled to sense a voltage across a high voltage capacitance. The driver circuit is to be coupled to control the variable impedance element in response to the voltage sensor. A low voltage capacitance is allowed to receive current from the input if the sensed voltage is less than a second threshold value. The low voltage capacitance is prevented from receiving current from the input if the sensed voltage is greater than a first threshold value.
    • 公开了一种包括在具有耦合到单相AC输入电压的整流器的电源中的驱动器电路。 示例性驱动器电路包括用于产生要耦合到可变阻抗元件的驱动信号的驱动信号发生器。 电压传感器耦合到驱动信号发生器并且被耦合以感测高电压电容两端的电压。 驱动电路将被耦合以响应于电压传感器来控制可变阻抗元件。 如果感测到的电压小于第二阈值,则允许低电压电容从输入端接收电流。 如果感测到的电压大于第一阈值,则防止低电压电容从输入端接收电流。
    • 90. 发明申请
    • Power supply having a two-way DC to DC converter
    • 电源具有双向DC到DC转换器
    • US20100165673A1
    • 2010-07-01
    • US12459428
    • 2009-07-01
    • Shun-Te ChangWei-Liang Lin
    • Shun-Te ChangWei-Liang Lin
    • H02M3/335
    • H02M1/10
    • A power supply having a two-way DC to DC converter has an AC to DC converter and a two-way DC to DC converter. When an AC power is input to the AC to DC converter, the AC to DC converter transforms the AC power to a middle level DC power and the two-way DC to DC converter transforms the middle level DC power to a low level DC power. When the AC power is unavailable and the two-way DC to DC converter obtains an external DC power, the two-way DC to DC converter transforms the external DC power to the middle level DC power. Therefore, if the power supply obtains the external DC power, the power supply can still output the middle level DC power even the AC power is unavailable.
    • 具有双向DC-DC转换器的电源具有AC至DC转换器和双向DC-DC转换器。 当交流电源输入到交流直流转换器时,交流 - 直流转换器将交流电转换为中间电平的直流电,双向直流 - 直流转换器将中间级直流电转换成低电平的直流电。 当交流电源不可用,双向DC-DC转换器获得外部直流电源时,双向直流 - 直流转换器将外部直流电源转换为中间级直流电源。 因此,如果电源获得外部直流电源,即使交流电不可用,电源仍然可以输出中间级直流电源。