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    System and method for phase lock loop gain stabilization
    1.
    发明授权
    System and method for phase lock loop gain stabilization 失效
    用于锁相环增益稳定的系统和方法

    公开(公告)号：US5625325A

    公开(公告)日：1997-04-29

    申请号：US577780

    申请日：1995-12-22

    申请人： Robert R. Rotzoll ,  Jaideep Prakash

    发明人： Robert R. Rotzoll ,  Jaideep Prakash

    IPC分类号： H03L7/089 ,  H03L7/093 ,  H03L7/099

    CPC分类号： H03L7/0898 ,  H03L7/099 ,  H03J2200/10 ,  H03L2207/05 ,  H03L7/093

    摘要： The system and method for phase lock loop (PLL) gain stabilization uses a digital compensation technique to correct for the large amount of gain variation present in a voltage controlled oscillator (VCO) utilizing a varactor diode. AVCO is arranged with additional capacitance in parallel with the vatactor diode of the VCO. By using multiple capacitors, more or less capacitance can be switched into parallel with the vatactor diode. Gain variation is accomplished by switching capacitors into the circuit, and for each combination of capacitors used in the resonant inductance-capacitance (LC) circuit of the VCO, the gain of the phase detector in the PLL is adjusted simultaneously. The phase detector has a charge pump that drives a current into a loop filter having a capacitor with a fixed value. The gain adjustment is accomplished by varying the amount of current available from the charge pump to this filter capacitor. The gain compensation circuit that generates this charge pump current takes the same digital code used to control the capacitors in the VCO as an input and performs a digital-to-analog conversion in current mode. The analog current is then transformed into a second-order polynomial via a current squarer and programmable current scalers to provide a gain compensation signal for the phase detector. The programmable current scalers determine the coefficients of the second order polynomial. Therefore, for any given VCO characteristic with regard to the additional capacitors and the varactor diode, the coefficients of the current scalers can be adjusted to accommodate a more precise PLL gain control.

    摘要翻译： 用于锁相环（PLL）增益稳定的系统和方法使用数字补偿技术来校正利用变容二极管的压控振荡器（VCO）中存在的大量增益变化。 AVCO与VCO的Vatactor二极管并联设置附加电容。 通过使用多个电容器，可以将或多或少的电容转换成与电抗器二极管并联。 通过将电容器切换到电路中来实现增益变化，并且对于在VCO的谐振电感 - 电容（LC）电路中使用的电容器的每个组合，PLL中的相位检测器的增益被同时调整。 相位检测器具有将电流驱动到具有固定值的电容器的环路滤波器中的电荷泵。 通过改变从电荷泵到该滤波电容器的可用电流量来实现增益调节。 产生该电荷泵电流的增益补偿电路采用与用于控制VCO中的电容器相同的数字代码作为输入，并在当前模式下执行数模转换。 然后通过电流平方和可编程电流定标器将模拟电流转换成二阶多项式，以为相位检测器提供增益补偿信号。 可编程电流定标器确定二阶多项式的系数。 因此，对于关于附加电容器和变容二极管的任何给定的VCO特性，可以调整电流定标器的系数以适应更精确的PLL增益控制。

    Inverter for use in photovoltaic module
    2.
    发明授权
    Inverter for use in photovoltaic module 有权

    公开(公告)号：US10468993B2

    公开(公告)日：2019-11-05

    申请号：US12121580

    申请日：2008-05-15

    申请人： Robert R. Rotzoll

    发明人： Robert R. Rotzoll

    IPC分类号： H02M5/45 ,  H02M7/00 ,  H02M7/493 ,  H02S40/32 ,  H02J3/38

    摘要： A photovoltaic module-mounted AC inverter circuit uses one or more integrated circuits, several power transistors configured as switches, several solid-dielectric capacitors for filtering and energy storage, several inductors for power conversion and ancillary components to support the above elements in operation. The integrated circuit includes all monitoring, control and communications circuitry needed to operate the inverter. The integrated circuit controls the activity of pulse-width modulated power handling transistors in both an input boost converter and a single-phase or multi-phase output buck converter. The integrated circuit also monitors all power processing voltages and currents of the inverter and can take appropriate action to limit power dissipation in the inverter, maximize the available power from the associated PV module and shut down the inverter output if the grid conditions so warrant. The integrated circuit implements power line communications by monitoring the AC wiring for signals and generating communications signals via the same pulse-width modulation system used to generate the AC power. Communications is used to report inverter and PV module status information, local identification code and to allow for remote control of inverter operation.

    PHOTOVOLTAIC MODULE-MOUNTED AC INVERTER
    4.
    发明申请
    PHOTOVOLTAIC MODULE-MOUNTED AC INVERTER 审中-公开
    光伏模块安装交流逆变器

    公开(公告)号：US20080285317A1

    公开(公告)日：2008-11-20

    申请号：US12121580

    申请日：2008-05-15

    申请人： Robert R. Rotzoll

    发明人： Robert R. Rotzoll

    IPC分类号： H02M3/335

    CPC分类号： H02M7/003 ,  H02J3/383 ,  H02M7/493 ,  H02S40/32 ,  Y02B10/14 ,  Y02E10/563

    摘要： A photovoltaic module-mounted AC inverter circuit uses one or more integrated circuits, several power transistors configured as switches, several solid-dielectric capacitors for filtering and energy storage, several inductors for power conversion and ancillary components to support the above elements in operation. The integrated circuit includes all monitoring, control and communications circuitry needed to operate the inverter. The integrated circuit controls the activity of pulse-width modulated power handling transistors in both an input boost converter and a single-phase or multi-phase output buck converter. The integrated circuit also monitors all power processing voltages and currents of the inverter and can take appropriate action to limit power dissipation in the inverter, maximize the available power from the associated PV module and shut down the inverter output if the grid conditions so warrant. The integrated circuit implements power line communications by monitoring the AC wiring for signals and generating communications signals via the same pulse-width modulation system used to generate the AC power. Communications is used to report inverter and PV module status information, local identification code and to allow for remote control of inverter operation.

    摘要翻译： 光伏模块安装的AC逆变器电路使用一个或多个集成电路，配置为开关的几个功率晶体管，用于滤波和能量存储的几个固体介电电容器，用于功率转换的几个电容器和用于支持上述元件的操作的辅助部件。 集成电路包括操作变频器所需的所有监控，控制和通信电路。 集成电路控制输入升压转换器和单相或多相输出降压转换器中的脉宽调制功率处理晶体管的活动。 集成电路还监控逆变器的所有功率处理电压和电流，并且可以采取适当的措施来限制变频器的功率消耗，从而使相关PV模块的可用功率最大化，并在电网条件如此保证的情况下关闭变频器输出。 该集成电路通过监视用于信号的交流布线并通过用于产生交流电源的相同的脉宽调制系统产生通信信号来实现电力线通信。 通信用于报告逆变器和PV模块状态信息，本地识别码，并允许远程控制变频器运行。

    PHOTOVOLTAIC AC INVERTER MOUNT AND INTERCONNECT
    5.
    发明申请
    PHOTOVOLTAIC AC INVERTER MOUNT AND INTERCONNECT 审中-公开
    光伏交流逆变器安装和互连

    公开(公告)号：US20080283118A1

    公开(公告)日：2008-11-20

    申请号：US12121578

    申请日：2008-05-15

    申请人： Robert R. Rotzoll ,  Rajan N. Kapur

    发明人： Robert R. Rotzoll ,  Rajan N. Kapur

    IPC分类号： H01L31/042

    CPC分类号： H02M7/003 ,  H02J3/383 ,  H02M7/493 ,  H02S40/32 ,  Y02B10/14 ,  Y02E10/563

    摘要： A replaceable photovoltaic inverter is mounted on each of a plurality of photovoltaic module for the conversion of direct current, produced by the photovoltaic cells, to alternating current. The inverter is coupled to a mounting bracket on the photovoltaic module such that is can be easily replaced. Replacement of an individual photovoltaic module inverter can occur during continuous operation of the photovoltaic module system with minimal impact on overall power production. The inverter is also mounted apart from the photovoltaic module to facilitate heat transfer generated by operation of the inverter.

    摘要翻译： 可替换的光伏逆变器安装在多个光伏组件中的每一个上，用于将由光伏电池产生的直流转换成交流电。 逆变器耦合到光伏模块上的安装支架，使得可以容易地更换。 单个光伏模块逆变器的替换可以在光伏模块系统的连续操作期间发生，对总功率产生的影响最小。 逆变器还与光伏模块分开安装，以便于通过逆变器的操作产生的热传递。