中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

36 records (took 0.03 seconds)

    Active snubber topology
    1.
    发明公开
    Active snubber topology 有权
    AktiveDämpfertopologie

    公开(公告)号：EP2787617A1

    公开(公告)日：2014-10-08

    申请号：EP13161957.9

    申请日：2013-04-02

    Applicant: ABB Research Ltd.

    Inventor： Li, Tin-Ho ,  Ho, Ngai-Man ,  Escobar, Gerardo ,  Bradshaw, Jonathan

    IPC: H02M1/34

    CPC classification number: H02M1/34 ,  H02M2001/342 ,  Y02B70/1491

    Abstract: The present discloses an active snubber circuit and a power converter comprising the active circuit. The active snubber circuit comprises a series connection of a first diode and a first inductor connected between a first interfacing point (A 1 ) and a first connection point (D), a second diode connected between a second connection point (E) and a second interfacing point (B), a series connection of a third diode and a second inductor connected between a third interfacing point (C) and the second connection point (E), a switching device connected between the first connection point (D) and the third interfacing point (C), and a first capacitor connected between the first connection point (D) and the second connection point (E). The first, the second, and the third diode are forward-biased in a first direction along a path between the first interfacing point (A 1 ) and the second interfacing point (B) and through the third interfacing point (C), and the switching device is configured to control a flow of current in the first direction.

    Abstract translation: 本发明公开了一种有源缓冲电路和包括有源电路的功率转换器。 有源缓冲电路包括连接在第一接口点（A 1）和第一连接点（D）之间的第一二极管和第一电感器的串联连接，连接在第二连接点（E）和第二连接点 连接点（B），连接在第三接口点（C）和第二连接点（E）之间的第三二极管和第二电感器的串联连接;连接在第一连接点（D）和第三连接点 连接点（C）和连接在第一连接点（D）和第二连接点（E）之间的第一电容器。 第一，第二和第三二极管沿第一方向沿着第一接口点（A 1）和第二接口点（B）之间的路径以及通过第三接口点（C）向前偏置，并且 开关装置被配置成控制电流在第一方向上的流动。

    Method and arrangement for estimating angular frequency
    4.
    发明公开
    Method and arrangement for estimating angular frequency 审中-公开
    方法和装置用于估计角频率

    公开(公告)号：EP2372376A9

    公开(公告)日：2011-12-21

    申请号：EP10158614.7

    申请日：2010-03-31

    Applicant: ABB Research Ltd

    Inventor： Escobar, Gerardo ,  Coccia, Antonio ,  Serpa, Leonardo-Augusto ,  Pettersson, Sami ,  De-Novaes, Yales

    IPC: G01R19/25

    CPC classification number: G01R23/02 ,  G01R19/2513

    Abstract: Method and arrangement for estimating the frequency and the positive sequence of a fundamental component of a measured three-phase voltage (ν αβ ) the method comprising the steps of measuring the three-phase voltage (ν αβ ), calculating estimates of the fundamental frequency voltage component (ν̂ αβ,1 ) and the difference (ϕ̂ αβ,1 ) between positive and negative sequence components of the fundamental frequency voltage from the error (ν̃ αβ ) between the measured three-phase voltage (ν αβ ) and the calculated estimate of the fundamental frequency voltage component (ν̂ αβ,1 ) and from an estimate of the angular frequency (ω̂ 0 ) of the fundamental voltage component, wherein the estimate of the angular frequency (ω̂ 0 ) of the fundamental voltage component is calculated from the estimated difference (ϕ̂ αβ,1 ) and from the error (ν̃ αβ ) between the measured three-phase voltage and the calculated estimate of the fundamental component.

    Control method for single-phase grid-connected LCL inverter
    5.
    发明公开
    Control method for single-phase grid-connected LCL inverter 有权
    用于电网连接的单相逆变器控制LCL方法

    公开(公告)号：EP2362515A9

    公开(公告)日：2011-11-23

    申请号：EP10154113.4

    申请日：2010-02-19

    Applicant: ABB Research Ltd

    Inventor： Coccia, Antonio ,  Escobar, Gerardo ,  Serpa, Leonardo-Augusto ,  Paakkinen, Mikko ,  Pettersson, Sami

    IPC: H02J3/01

    CPC classification number: H02J3/01 ,  Y02E40/40

    Abstract: A method of controlling the grid-side current of a single-phase grid-connected converter having an LCL filter connected between the output of the converter and the grid, the method comprising the steps of measuring a grid voltage (ν S ) and at least one signal in a group of signals comprising a grid-side current ( i 0 ), a converter-side current ( i 1 ) and a capacitor voltage ( ν C 0 ). The method comprises the steps of estimating the fundamental component ( ν S ,1 ) of the grid voltage ( ν S ), forming a grid-side current reference a converter-side current reference and a capacitor voltage reference for the grid-side current of the LCL filter using the fundamental component of the grid voltage (ν S,1 ), forming estimates for the non-measured signals in said group of signals, forming a grid-side current difference term ( ĩ 0 ), a converter-side current difference term ( ĩ 1 ) and a capacitor voltage difference term ( ν̃ C 0 ) from the differences between the references and measured/estimated values of said signals, forming an injection term for damping the resonance of the LCL filter by using an active damping injection mechanism (ADI), in which the grid-side current difference term ( ĩ 0 ), the converter-side current difference term ( ĩ 1 ) and the capacitor voltage difference term (ν̃ C 0 ) are used, forming an estimate of harmonic distortion term (φ̂) using the grid-side current difference term ( ĩ 0 ), controlling the output voltage ( e ) of the converter on the basis of the grid voltage, formed injection term and formed estimate of the harmonic distortion term (φ̂) to produce a grid side ( i 0 ) current corresponding to the current reference.

    Method and arrangement of tracking the maximum power point of a photovoltaic module
    6.
    发明公开
    Method and arrangement of tracking the maximum power point of a photovoltaic module 有权
    方法和装置用于跟踪光伏模块的最大功率点

    公开(公告)号：EP2372486A1

    公开(公告)日：2011-10-05

    申请号：EP10158569.3

    申请日：2010-03-31

    Applicant: ABB Research Ltd

    Inventor： Coccia, Antonio ,  Escobar, Gerardo ,  Serpa, Leonardo-Augusto ,  Paakkinen, Mikko ,  Pettersson, Sami

    IPC: G05F1/67

    CPC classification number: G05F1/67 ,  Y02E10/58

    Abstract: A method and an arrangement for tracking the maximum power point of a photovoltaic module, the method comprising measuring current ( i ) from the photovoltaic module, measuring output voltage (ν C ) of the photovoltaic module, calculating power ( p ) of the module as the product of the measured current ( i ) and output voltage (ν C ). The method further comprises extracting a selected harmonic component ( p̃ ) from the calculated power ( p ), extracting a selected harmonic component ( ν̃ C ) from the measured voltage (ν C ), multiplying the extracted harmonic components of power and voltage, extracting a DC component (〈 p̃ν̃ C 〉 DC ) from the obtained product ( p̃ν̃ C ), and forming a control signal (P; V ref ) for controlling an inverter connected to the photovoltaic module by using the extracted DC component in a PI algorithm.

    Abstract translation: 一种用于跟踪光伏模块，所述方法包括从所述光伏模块的测量电流（i）的最大功率点，测量光伏模块的输出电压（1/2 C），计算所述模块的功率（P），其方法和装置的 的电流的测得的产物（i）和输出电压（1/2 C）。 该方法还包括提取从所计算的功率（P）的选定谐波分量（P），从提取的测量电压（1/2 C）所选择的谐波分量（1/2 C）乘以功率和电压的所提取的高次谐波成分，提取 DC分量（OE©p½çŒªDC）从所获得的产品（P½C），并形成控制信号（P; V REF），用于在由一个PI使用所提取的DC分量连接到光伏模块逆变器控制 算法。

    Method and apparatus for producing three-phase current
    9.
    发明公开
    Method and apparatus for producing three-phase current 有权
    用于产生三相电流的方法和设备

    公开(公告)号：EP2770624A1

    公开(公告)日：2014-08-27

    申请号：EP13156384.3

    申请日：2013-02-22

    Applicant: ABB Research Ltd.

    Inventor： Ho, Ngai-Man ,  Escobar, Gerardo ,  Canales, Francisco

    IPC: H02M7/493 ,  H02M7/497

    CPC classification number: H02M7/49 ,  H02M3/335 ,  H02M7/487 ,  H02M7/493 ,  H03B1/00

    Abstract: The present disclosure discloses a method and an apparatus for implementing the method for producing a three-phase current to a three-phase output. The method comprises producing a positive current, a negative current, and an intermediate current by using switching converters. The produced positive current follows a path of a highest phase of a sinusoidal three-phase signal at a given time, the produced negative current follows a path of a lowest phase of the three-phase signal at the given time, and the produced intermediate current follows a path of a phase of the three-phase signal between the highest and the lowest phase at the given time. The produced currents are switched to each phase conductor of the three-phase output in sequence so that phase currents of the three-phase current are formed in the output conductors.

Patent Agency Ranking