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公开(公告)号：US10381836B2
公开(公告)日：2019-08-13
申请号：US14570540
申请日：2014-12-15
摘要： Power converter communications, including power converter communication methods and power converters that can communicate information, are disclosed. A control variable of a power converter is modulated, to modulate an output of the power converter for communicating information. Modulation of voltage or current on a circuit path to which the power converter is coupled could be detected, by another power converter, for example. Such modulation could be detected by sensors that are also used in controlling the power converter. Either or both of transmission and reception could therefore be provided without requiring any additional hardware at a power converter.
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公开(公告)号：US09853443B2
公开(公告)日：2017-12-26
申请号：US14316477
申请日：2014-06-26
CPC分类号： H02H3/46 , H01L31/02021 , H02H1/0015 , H02H7/20 , Y02E10/56
摘要： A first switch for connection in a first circuit path between a PV panel string and an inverter in a power system, and a second switch for connection in a second circuit path across an output of the PV panel string, are normally closed and open, respectively, during non-fault operation of the power system. Both series and parallel arc faults in the power system can be extinguished by further control of the switches. Arc fault detection could be based on probabilistic frequency analysis of current or power flow measurements in the PV panel string, current or power imbalance, interruption in communications with the PV panels, or combinations of these techniques.
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公开(公告)号：US20160329715A1
公开(公告)日：2016-11-10
申请号：US14707119
申请日：2015-05-08
发明人： Raymond Kenneth ORR , Kadir YILMAZ
CPC分类号： H02J3/383 , G01R31/026 , H02M7/42 , H02M2001/325 , H02S50/00 , H02S50/10 , Y02B10/14 , Y02E10/563
摘要： Photovoltaic power system inverter detection apparatus and methods are disclosed. Electrical continuity between an inverter in a PV power system and a PV panel disconnect switch, which switchably couples one or more DC PV panels to the PV power system, is tested while the PV panel disconnect switch is open. A state of the electrical continuity is determined based on measurements of an electrical parameter after the test signal is applied. The PV panel disconnect switch is maintained open on determining no electrical continuity, and closed on determining that there is electrical continuity between the PV panel disconnect switch and the inverter. A shutdown device that implements inverter detection may be located and/or adapted to meet safety conditions, by being located less than 10 feet from the PV panel array and/or adapted to limit a test signal to a maximum of 30V and 240VA.
摘要翻译： 公开了光伏电力系统逆变器检测装置和方法。 PV光伏电源系统中的逆变器与PV面板断开开关之间的电气连续性在PV面板断开开关断开时进行测试，PV开关可以将一个或多个DC PV面板切换到PV电源系统。 基于测试信号施加后的电参数的测量来确定电连续性的状态。 PV面板断开开关在确定无电气连续性时保持打开，并且在确定PV面板断开开关和逆变器之间存在电气连续性时关闭。 实现逆变器检测的关闭装置可以通过位于距离PV面板阵列小于10英尺的位置和/或适于将测试信号限制在最大30V和240VA的范围内来定位和/或适于满足安全条件。
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公开(公告)号：US09219421B2
公开(公告)日：2015-12-22
申请号：US13657171
申请日：2012-10-22
CPC分类号： H02M3/33546 , H02M3/33584 , H02M3/33592 , H02M2001/0058 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491
摘要： Forward boost power converters, and related methods, are disclosed. In a switching mode power converter coupled between a first terminal pair and a second terminal pair, a first inductance is coupled to a first switch in a first circuit path across the first terminal pair. A capacitance is coupled to a second inductance in a second circuit path, and to the first inductance in a third circuit path. During their respective conduction periods, the first switch couples the first inductance across the first terminal pair, a second switch completes a circuit between the second terminal pair and one of: the second circuit path or the third circuit path, and a third switch completes the other of: the second circuit path and the third circuit path. Energy transfer involves both substantially linearly varying currents and substantially half sinusoidal current pulses.
摘要翻译： 正向升压功率转换器及相关方法。 在耦合在第一端子对和第二端子对之间的开关模式功率转换器中，第一电感耦合到穿过第一端子对的第一电路中的第一开关。 电容耦合到第二电路中的第二电感，并且耦合到第三电路中的第一电感。 在它们各自的导通时段期间，第一开关将第一电感耦合在第一端子对上，第二开关完成第二端子对与第二电路路径或第三电路路径之一的电路，第三开关完成 另一个：第二电路路径和第三电路路径。 能量转移涉及基本线性变化的电流和基本上一半的正弦电流脉冲。
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公开(公告)号：US20130342389A1
公开(公告)日：2013-12-26
申请号：US14004110
申请日：2012-03-08
申请人： Christian Cojocaru , Antoine Paquin
发明人： Christian Cojocaru , Antoine Paquin
CPC分类号： G01S11/06 , G01S3/74 , G01S5/14 , G01S13/876 , H01L31/02021 , Y02E10/50
摘要： A photovoltaic (PV) panel is described that can be used in a PV installation, in cooperation with a central control unit to provide a map of locations of individual PV panels. The map can be determined by the central control unit based on measurements of a characteristic made at the plurality of PV panels. The characteristic provides an indication of adjacent PV panels, allowing the map of locations of individual PV panels to be constructed.
摘要翻译： 描述了可以与中央控制单元合作用于PV安装中的光伏（PV）面板，以提供各个PV板的位置图。 该地图可以由中央控制单元基于在多个PV面板上制成的特性的测量来确定。 该特性提供了相邻的PV板的指示，允许构建各个PV板的位置图。
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公开(公告)号：US20130342017A1
公开(公告)日：2013-12-26
申请号：US14003578
申请日：2012-03-08
申请人： Tudor Lipan
发明人： Tudor Lipan
IPC分类号： G05F1/67
摘要： Photovoltaic system maximum power point tracking methods and apparatus are disclosed. Output power samples from one or more photovoltaic (PV) cells are obtained. The output power samples include perturbed samples for which a perturbation is applied to an operating voltage or current of the PV cell(s) and non-perturbed samples for which no perturbation is applied to the operating voltage or current. A control output, to change the operating voltage or current of the PV cell(s) for a next perturbed sample by a next perturbation, is generated. The next perturbation could be based on an estimated change in output power due to a previous perturbation. The next perturbation could also or instead be in a direction based on a change in output power samples, and of a magnitude based on the direction and a direction of perturbations applied for one or more perturbed samples preceding the next perturbed sample.
摘要翻译： 公开了光伏系统最大功率点跟踪方法和装置。 获得来自一个或多个光伏（PV）电池的输出功率样品。 输出功率样本包括干扰的样本，其扰动被施加到PV电池的工作电压或电流以及没有扰动施加于工作电压或电流的非扰动样本。 产生用于通过下一个扰动来改变下一个被扰动的样本的PV电池的工作电压或电流的控制输出。 下一个扰动可以基于由于以前的扰动而导致的输出功率的估计变化。 接下来的干扰也可以或者取决于基于输出功率样本的变化的方向，以及基于施加到下一个扰动样本之前的一个或多个扰动样本的扰动的方向和方向的幅度。
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公开(公告)号：US10672918B2
公开(公告)日：2020-06-02
申请号：US15653961
申请日：2017-07-19
IPC分类号： H01L31/02 , H02S50/10 , H02H3/02 , H02H3/06 , H02J7/35 , H02H7/20 , H02H1/00 , H02H11/00 , H02J3/38
摘要： A test signal is applied from a continuity test source to a photovoltaic (PV) panel string, to test electrical continuity in the PV panel string and between the PV panel string and an inverter that is coupled to the PV panel string. If the test signal is detected at a PV panel disconnect switch that is separate from the continuity test source and switchably couples one or more Direct Current (DC) PV panels in the PV panel string, then the PV panel disconnect switch is controlled to connect the one or more DC PV panels in the PV panel string. Otherwise, the PV panel disconnect switch is controlled to disconnect the one or more DC PV panels from the PV panel string. The test signal could be, for example, an Alternating Current (AC) signal tuned to a PV installation that includes the PV panel string and the inverter.
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公开(公告)号：US09812863B2
公开(公告)日：2017-11-07
申请号：US14574827
申请日：2014-12-18
摘要： An electrical power source includes a power converter and either an electrical generator or an electrical energy storage device. Power flow is controlled through control of the power converter based on a voltage source and resistance model of the electrical power source. A power converter for an electrical generator is controlled to synthesize a constant voltage of the voltage source and a variable value of the resistance. The resistance value is controlled to deliver a maximum available output power to the electrical microgrid over a range of microgrid voltages up to a voltage below a maximum allowable voltage of the electrical microgrid. For an electrical energy storage device, the power converter is controlled to synthesize a resistance value of the resistance that is dependent upon a phase angle between the voltage at the microgrid side of the electrical power source and current of the electrical energy storage device.
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公开(公告)号：US09780234B2
公开(公告)日：2017-10-03
申请号：US14286076
申请日：2014-05-23
CPC分类号： H01L31/02021 , H02J3/383 , Y02E10/563 , Y10T307/76
摘要： A PhotoVoltaic (PV) panel switching arrangement includes a first switch and a second switch, which in some embodiments are in a DC converter. The first switch is to be coupled between a power system and a first end of a circuit path of the PV panel, and the second switch is to be coupled between (i) a point between the first switch and the power system and (ii) a point between a second end of the circuit path and the power system. The switches are controlled for DC conversion of PV panel output where the circuit path of the PV panel is not to be bypassed, and to disconnect the first end of the circuit path from the power system and to close a bypass circuit path that bypasses the circuit path on a determination that the circuit path of the PV panel is to be bypassed.
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公开(公告)号：US09742278B2
公开(公告)日：2017-08-22
申请号：US14881809
申请日：2015-10-13
CPC分类号： H02M3/158 , H02M7/5387 , H02M2001/0003 , H02M2001/0009
摘要： In event-based switching for power conversion, binary electrical event signals are selected from a number of available binary electrical event signals. Fewer than all of the available binary electrical event signals are selected. The selected binary electrical event signals are optionally processed in generating respective processed binary electrical event signals. One of the respective processed binary event signals is selected as a switch turn-on signal and another of the respective processed binary electrical event signals is selected as a switch turn-off signal, to control at least one switch in a switching mode power converter.
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