公开(公告)号：WO2010022220A1

公开(公告)日：2010-02-25

申请号：PCT/US2009/054430

申请日：2009-08-20

Applicant: ABB INC. ,  TRUETTNER, Donald, J. ,  GOKHALE, Kalyan, P.

Inventor： TRUETTNER, Donald, J. ,  GOKHALE, Kalyan, P.

IPC: H02M3/335

CPC classification number: H02M3/33569

Abstract: A voltage converter includes a transformer with a pair of primary coils and a secondary coil. The converter has a DC input and a capacitor bank, having a pair of capacitors, is connected across the DC input. A switch is associated with each primary coil. A gate drive feedback module outputs a pulse width modulated signal to drive either the first or second primary coil. A gate drive switch has as an input the pulse width modulated signal and outputs to the first second switch. A pulse steering logic module determines which of the first or second capacitors has a higher voltage and controls the gate drive switch to direct the pulse width modulated signal in response thereto.

Abstract translation: 电压转换器包括具有一对初级线圈和次级线圈的变压器。 该转换器具有一个直流输入和一个电容器组，具有一对电容器，跨过直流输入端连接。 开关与每个初级线圈相关联。 栅极驱动反馈模块输出脉宽调制信号来驱动第一或第二初级线圈。 门驱动开关具有作为输入的脉宽调制信号并输出​​到第一第二开关。 脉冲转向逻辑模块确定第一或第二电容器中的哪一个具有较高的电压，并且控制栅极驱动开关以响应于此而引导脉宽调制信号。

公开(公告)号：WO2013016002A1

公开(公告)日：2013-01-31

申请号：PCT/US2012/046391

申请日：2012-07-12

Applicant: ABB INC. ,  GOKHALE, Kalyan, P.

Inventor： GOKHALE, Kalyan, P.

IPC: G01R15/18 ,  G01R19/00 ,  G01R15/20

CPC classification number: G01R15/183 ,  G01R19/0015

Abstract: A current sensor (70) is provided for measuring DC current (Ι^) in a primary conductor (40) also carrying AC current (lac). The current sensor includes a ferromagnetic core (50) through which the primary conductor may extend. The core has a narrow air gap (56) formed there in and a magnetic flux sensor (58) is disposed in the air gap. A secondary winding (60) is mounted to the core and has an impedance (72) connected therein. The impedance has a value of substantially zero at one or more frequencies of the AC current. The impedance may be a short or an impedance source that includes a capacitor (76) and an inductor (74).

Abstract translation: 提供电流传感器（70），用于测量也承载AC电流（lac）的初级导体（40）中的直流电流（Ω）。 电流传感器包括铁磁芯（50），主导体可以通过该铁磁芯延伸。 芯具有形成在其中的窄气隙（56），磁通量传感器（58）设置在气隙中。 次级绕组（60）安装到芯上并具有连接在其中的阻抗（72）。 阻抗在交流电流的一个或多个频率处具有基本为零的值。 阻抗可以是包括电容器（76）和电感器（74）的短路或阻抗源。

公开(公告)号：WO2011156199A2

公开(公告)日：2011-12-15

申请号：PCT/US2011/038882

申请日：2011-06-02

Applicant: ABB INC. ,  ABB OY ,  KARRAKER, Douglas, W. ,  GOKHALE, Kalyan, P. ,  JUSSILA, Matti, T.

Inventor： KARRAKER, Douglas, W. ,  GOKHALE, Kalyan, P. ,  JUSSILA, Matti, T.

IPC: H02M7/487

CPC classification number: H02M7/487 ,  H02J3/383 ,  Y02E10/563

Abstract: A full-bridge, NPC inverter uses pulse width modulation (PWM) to convert the DC voltage from a solar panel array to an AC voltage at the output of the inverter that is acceptable for connection to a utility. The PWM control unit has a predetermined carrier frequency. The carrier unit uses for each carrier period either positive or negative values of a reference voltage to generate a predetermined number of signals to control the switching on and off of each of the eight inverter switching elements in a predetermined pattern for a predetermined period of the carrier frequency period to thereby produce the acceptable alternating current voltage at the inverter output and not produce between the inverter input and earth ground a carrier frequency component.

Abstract translation: 全桥NPC逆变器使用脉冲宽度调制（PWM）将来自太阳能电池板阵列的直流电压转换为连接到公用设施可接受的逆变器输出端的交流电压。 PWM控制单元具有预定的载波频率。 载波单元在每个载波周期使用参考电压的正值或负值，以产生预定数量的信号，以在载波的预定时段内以预定模式控制八个逆变器开关元件中的每一个的开关 从而在逆变器输出端产生可接受的交流电压，并且不会在变频器输入和接地之间产生载波频率分量。

公开(公告)号：WO2011153427A2

公开(公告)日：2011-12-08

申请号：PCT/US2011/039053

申请日：2011-06-03

Applicant: ABB INC. ,  ABB OY ,  GOKHALE, Kalyan, P. ,  KARRAKER, Douglas, W. ,  PAJARI, Ilkka, T. ,  JUSSILA, Matti, T.

Inventor： GOKHALE, Kalyan, P. ,  KARRAKER, Douglas, W. ,  PAJARI, Ilkka, T. ,  JUSSILA, Matti, T.

IPC: H02M7/48 ,  H01H47/00

CPC classification number: H02M1/32

Abstract: A system for the detection of welded contacts in a circuit of a line converter system has a plurality of inverter switches, a plurality of utility switches in which a pair of utility switches is connected in series through a line to a utility, a voltage detector, an electronic controller, and a DC input source. The line converter system converts incoming DC power into AC output power that is delivered to the utility grid. The voltage detector measures the voltage across a first node and a second node of the circuit and provides an output that is interpreted by an electronic controller for each step performed during a method of detection of welded contacts. The detection method has a sequence of test steps in which at least one switch is opened and/or closed, a DC bus of the inverter or the utility grid is used as a stimulus voltage, and the voltage is measured. If a voltage is not detected across the first and second nodes, the test sequence is continued until a welded contact is detected or the electronic controller determines that none of the contacts are welded. If the controller determines that none of the contacts are welded, the line converter system is permitted to connect and supply AC power to the utility.

Abstract translation: 用于检测线路转换器系统的电路中的焊接触点的系统具有多个逆变器开关，多个效用开关，其中一对效用开关通过线路串联连接到公用设施，电压检测器， 电子控制器和DC输入源。 线路转换器系统将输入的直流电力转换成交付输出功率，并输送到公用电网。 电压检测器测量电路的第一节点和第二节点上的电压，并提供由电子控制器解释的输出，用于在焊接触点的检测方法期间执行的每个步骤。 检测方法具有一系列测试步骤，其中至少一个开关被打开和/或关闭，逆变器或公用电网的DC总线用作激励电压，并且测量电压。 如果在第一和第二节点之间没有检测到电压，则继续测试序列直到检测到焊接接触点，或者电子控制器确定没有焊接接触点。 如果控制器确定没有一个触点被焊接，则允许线路转换器系统连接并向公用设施提供AC电力。

公开(公告)号：WO2004025816A2

公开(公告)日：2004-03-25

申请号：PCT/US2003/026583

申请日：2003-08-26

Applicant: ABB INC. ,  ABB OY

Inventor： GOKHALE, Kalyan, P. ,  VALLINMAKI, Alpo, K. ,  SODO, Nicklas, Jan, Anders

IPC: H02M

CPC classification number: H01F3/14 ,  H01F38/023 ,  H02M1/126 ,  Y10T29/4902 ,  Y10T29/49069 ,  Y10T29/49075 ,  Y10T29/49078

Abstract: Non-linear inductor(s) are used to reduce the percent total harmonic distortion of the harmonics in the line currents in the input side rectifier system of an ac drive system. Several constructions for the non-linear inductor(s) are described. The non-linear inductor(s) may be constructed from E and I laminations. The gap depends on the construction of the middle leg of the E laminations and may have a step with a constant spacing or a variable spacing which depends on the stacking of the laminations. Alternatively the non-linear inductor(s) may be constructed from a toriodal core that either has a step gap or a variable type gap.

Abstract translation: 非线性电感用于降低交流驱动系统输入侧整流系统中线路电流中谐波的总谐波失真百分比。 描述了用于非线性电感器的若干结构。 非线性电感器可以由E和I叠层构成。 间隙取决于E叠片的中间腿的结构，并且可以具有取决于叠片的堆叠的恒定间隔或可变间隔的台阶。 或者，非线性电感器可以由具有阶跃间隙或可变型间隙的环形磁芯构成。