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    HYBRID ZERO-VOLTAGE SWITCHING (ZVS) CONTROL FOR POWER INVERTERS
    2.
    发明申请
    HYBRID ZERO-VOLTAGE SWITCHING (ZVS) CONTROL FOR POWER INVERTERS 有权
    用于电力逆变器的混合零电压开关（ZVS）控制

    公开(公告)号：US20150062988A1

    公开(公告)日：2015-03-05

    申请号：US14471961

    申请日：2014-08-28

    Applicant: University of Central Florida Research Foundation, Inc.

    Inventor： AHMADREZA AMIRAHMADI ,  HAIBING HU ,  ISSA BATARSEH

    IPC: H02M7/5387 ,  H02M1/08

    CPC classification number: H02M7/53873 ,  H02M1/083 ,  H02M2001/0058 ,  Y02B70/1491

    Abstract: A power inverter combination includes a half-bridge power inverter including first and second semiconductor power switches receiving input power having an intermediate node therebetween providing an inductor current through an inductor. A controller includes input comparison circuitry receiving the inductor current having outputs coupled to first inputs of pulse width modulation (PWM) generation circuitry, and a predictive control block having an output coupled to second inputs of the PWM generation circuitry. The predictive control block is coupled to receive a measure of Vin and an output voltage at a grid connection point. A memory stores a current control algorithm configured for resetting a PWM period for a switching signal applied to control nodes of the first and second power switch whenever the inductor current reaches a predetermined upper limit or a predetermined lower limit.

    Abstract translation: 电力逆变器组合包括半桥功率逆变器，其包括接收输入功率的第一和第二半导体功率开关，其中间节点之间提供通过电感器的电感器电流。 控制器包括输入比较电路，其接收具有耦合到脉冲宽度调制（PWM）产生电路的第一输入的输出的电感器电流，以及具有耦合到PWM产生电路的第二输入的输出的预测控制块。 预测控制块被耦合以在电网连接点处接收Vin的测量值和输出电压。 存储器存储电流控制算法，其被配置用于仅在电感器电流达到预定上限或预定下限时复位施加到第一和第二电源开关的控制节点的开关信号的PWM周期。

    MULTI-INPUT SINGLE-RESONANT TANK LLC CONVERTER
    3.
    发明申请
    MULTI-INPUT SINGLE-RESONANT TANK LLC CONVERTER 审中-公开

    公开(公告)号：US20200052604A1

    公开(公告)日：2020-02-13

    申请号：US16536911

    申请日：2019-08-09

    Applicant: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.

    Inventor： SEYED-MILAD TAYEBI ,  ISSA BATARSEH ,  Haibing Hu

    IPC: H02M3/335 ,  H01L31/042

    Abstract: A multi-input power DC-DC converter includes a first and second bridge circuit for receiving power from a first and second electric power source. The first bridge circuit includes a first power switches with a first switch output node in between, and a second bridge circuit for receiving power from a second electric power source including second power switches with a second switch output node in between. At least one of the first and second electric power source is a photovoltaic (PV) panel. A single LLC resonant tank coupled to both the first and second output node is configured together with a transformer including a secondary winding and a primary winding that provides a magnetizing inductance which provides a second inductance for the single LLC resonant tank. A rectifier is coupled to the secondary winding.

    SYNCHRONOUS SAMPLING DC LINK VOLTAGE CONTROL FOR MICROINVERTERS
    4.
    发明申请
    SYNCHRONOUS SAMPLING DC LINK VOLTAGE CONTROL FOR MICROINVERTERS 审中-公开

    公开(公告)号：US20190058395A1

    公开(公告)日：2019-02-21

    申请号：US16105661

    申请日：2018-08-20

    Applicant: University of Central Florida Research Foundation, Inc.

    Inventor： SEYED-MILAD TAYEBI ,  ISSA BATARSEH

    IPC: H02M1/44 ,  H02M3/04 ,  H02M7/44 ,  H03L7/08 ,  H02M1/14

    Abstract: A two-stage microinverter for coupling a PV panel to a power grid includes a DC/DC converter stage having an input for coupling to the PV panel and a DC/AC inverter stage that has an output for coupling to the grid, with at least one DC link capacitor between the DC/DC converter and DC/AC inverter stage. A synchronous controller that includes a loop compensator coupled to a mixer is between an analog-to-digital converter (ADC) and a phase-locked loop (PLL) for coupling to an output voltage from the grid. The ADC receives a DC link voltage from the DC link capacitor. An output of the PLL is for controlling a timing of sampling by the ADC of the DC link voltage so that the ADC samples the DC link voltage when an AC component of a ripple voltage on the DC link voltage intersects an average value of the DC link voltage.

    VARIABLE FREQUENCY ITERATION MPPT FOR RESONANT POWER CONVERTERS
    5.
    发明申请
    VARIABLE FREQUENCY ITERATION MPPT FOR RESONANT POWER CONVERTERS 审中-公开
    用于谐振电源的变频器MPPT

    公开(公告)号：US20140334190A1

    公开(公告)日：2014-11-13

    申请号：US14272110

    申请日：2014-05-07

    Applicant: University of Central Florida Research Foundation, Inc.

    Inventor： QIAN ZHANG ,  ISSA BATARSEH ,  LIN CHEN

    IPC: H02M3/335

    CPC classification number: H02M3/33507 ,  H02M3/3376 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1491

    Abstract: A method of maximum power point tracking (MPPT) uses an MPPT algorithm to determine a switching frequency for a resonant power converter, including initializing by setting an initial boundary frequency range that is divided into initial frequency sub-ranges bounded by initial frequencies including an initial center frequency and first and second initial bounding frequencies. A first iteration includes measuring initial powers at the initial frequencies to determine a maximum power initial frequency that is used to set a first reduced frequency search range centered or bounded by the maximum power initial frequency including at least a first additional bounding frequency. A second iteration includes calculating first and second center frequencies by averaging adjacent frequent values in the first reduced frequency search range and measuring second power values at the first and second center frequencies. The switching frequency is determined from measured power values including the second power values.

    Abstract translation: 最大功率点跟踪（MPPT）的方法使用MPPT算法来确定谐振功率转换器的开关频率，包括通过设置初始边界频率范围来初始化，初始边界频率范围被划分为初始频率范围，初始频率范围包括初始频率 中心频率和第一和第二初始边界频率。 第一迭代包括测量初始频率处的初始功率以确定用于设置由包括至少第一附加边界频率的最大功率初始频率居中或限制的第一降频检索范围的最大功率初始频率。 第二次迭代包括通过平均第一降频搜索范围中的相邻频率值并测量第一和第二中心频率处的第二功率值来计算第一和第二中心频率。 开关频率由包括第二功率值的测量功率值确定。

    POWER INVERTER IMPLEMENTING PHASE SKIPPING CONTROL
    8.
    发明申请
    POWER INVERTER IMPLEMENTING PHASE SKIPPING CONTROL 有权
    电力逆变器实施相位跳闸控制

    公开(公告)号：US20140334211A1

    公开(公告)日：2014-11-13

    申请号：US14271949

    申请日：2014-05-07

    Applicant: University of Central Florida Research Foundation, Inc.

    Inventor： UTSAV SOMANI ,  AHMADREZA AMIRAHMADI ,  CHARLES JOURDAN ,  ISSA BATARSEH

    IPC: H02M7/537

    CPC classification number: H02M7/53875 ,  H02M7/537 ,  H02P23/00 ,  H02P27/02

    Abstract: A power inverter includes a DC/AC inverter having first, second and third phase circuitry coupled to receive power from a power source. A controller is coupled to a driver for each of the first, second and third phase circuitry (control input drivers). The controller includes an associated memory storing a phase skipping control algorithm, wherein the controller is coupled to receive updating information including a power level generated by the power source. The drivers are coupled to control inputs of the first, second and third phase circuitry, where the drivers are configured for receiving phase skipping control signals from the controller and outputting mode selection signals configured to dynamically select an operating mode for the DC/AC inverter from a Normal Control operation and a Phase Skipping Control operation which have different power injection patterns through the first, second and third phase circuitry depending upon the power level.

    Abstract translation: 电力逆变器包括具有耦合以从电源接收功率的第一，第二和第三相电路的DC / AC逆变器。 控制器耦合到第一，第二和第三相电路（控制输入驱动器）中的每一个的驱动器。 控制器包括存储相位跳过控制算法的相关存储器，其中控制器被耦合以接收包括由电源产生的功率电平的更新信息。 驱动器耦合到第一，第二和第三相电路的控制输入，其中驱动器被配置为用于接收来自控制器的跳频控制信号，并且输出模式选择信号，其被配置为动态地选择DC / AC逆变器的工作模式 正常控制操作和相跳过控制操作，其根据功率水平通过第一，第二和第三相电路具有不同的功率注入模式。

    PHOTOVOLTAIC (PV)-BASED AC MODULE AND SOLAR SYSTEMS THEREFROM
    9.
    发明申请
    PHOTOVOLTAIC (PV)-BASED AC MODULE AND SOLAR SYSTEMS THEREFROM 审中-公开
    光伏（PV） - 交流模块和太阳能系统

    公开(公告)号：US20140333141A1

    公开(公告)日：2014-11-13

    申请号：US14272030

    申请日：2014-05-07

    Applicant: University of Central Florida Research Foundation, Inc.

    Inventor： HAIBING HU ,  ISSA BATARSEH ,  AHMADREZA AMIRAHMADI

    IPC: H02M7/5387 ,  H02J3/00

    CPC classification number: H02M7/4807 ,  H01L31/00 ,  H02J3/383 ,  Y02E10/563 ,  Y10T307/718

    Abstract: A photovoltaic (PV)-based AC module (module) includes a PV panel and a three-phase micro-inverter system attached to or integrated directly into the PV panel including a DC/AC inverter stage including first, second and third phase circuitry each having a plurality of semiconductor power switches. A first, second and third control input driver are coupled to drive control inputs of the plurality of semiconductor power switches in the first, second and third phase circuitry, respectively. The module can include a control unit coupled to drive the first, second and third control input driver, and a transceiver and antenna coupled to the control unit for implementing wireless communications.

    Abstract translation: 基于光伏（PV）的AC模块（模块）包括PV面板和连接到或直接集成到PV面板中的三相微逆变器系统，其包括DC / AC逆变器级，其包括第一，第二和第三相电路 具有多个半导体功率开关。 第一，第二和第三控制输入驱动器分别耦合到第一，第二和第三相电路中的多个半导体功率开关的驱动控制输入。 模块可以包括耦合以驱动第一，第二和第三控制输入驱动器的控制单元，以及耦合到控制单元的收发器和天线，用于实现无线通信。

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