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公开(公告)号：US08467200B2
公开(公告)日：2013-06-18
申请号：US13094260
申请日：2011-04-26
IPC分类号： H02M1/12
CPC分类号： H02M7/4807 , H02J3/383 , H02M3/337 , Y02B70/1433 , Y02E10/563
摘要： Provided are methods, circuits, and systems for obtaining power from a power generator such as a photovoltaic cell or a fuel cell. The methods, circuits, and systems comprise converting substantially DC output power from the power generator into a high frequency AC voltage while rejecting or minimizing oscillations in the output power from the power generator; converting the high frequency AC voltage into a high frequency substantially sinusoidal voltage or current; and converting the high frequency substantially sinusoidal AC voltage or current into (i) a DC voltage or current, and (ii) a low frequency substantially sinusoidal AC voltage or current; wherein the high frequency substantially sinusoidal AC voltage or current is isolated from the DC voltage or current or the low frequency substantially sinusoidal AC voltage or current.
摘要翻译： 提供了用于从诸如光伏电池或燃料电池的发电机获得电力的方法，电路和系统。 方法，电路和系统包括将来自发电机的基本上DC输出功率转换成高频AC电压，同时抑制或最小化来自发电机的输出功率的振荡; 将高频交流电压转换成高频大致正弦电压或电流; 并将高频大体正弦交流电压或电流转换为（i）直流电压或电流，以及（ii）低频大致正弦交流电压或电流; 其中所述高频大体上正弦的AC电压或电流与所述直流电压或电流或所述低频大体正弦交流电压或电流隔离。
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公开(公告)号：US20110261593A1
公开(公告)日：2011-10-27
申请号：US13094260
申请日：2011-04-26
IPC分类号： H02M3/335
CPC分类号： H02M7/4807 , H02J3/383 , H02M3/337 , Y02B70/1433 , Y02E10/563
摘要： Provided are methods, circuits, and systems for obtaining power from a power generator such as a photovoltaic cell or a fuel cell. The methods, circuits, and systems comprise converting substantially DC output power from the power generator into a high frequency AC voltage while rejecting or minimizing oscillations in the output power from the power generator; converting the high frequency AC voltage into a high frequency substantially sinusoidal voltage or current; and converting the high frequency substantially sinusoidal AC voltage or current into (i) a DC voltage or current, and (ii) a low frequency substantially sinusoidal AC voltage or current; wherein the high frequency substantially sinusoidal AC voltage or current is isolated from the DC voltage or current or the low frequency substantially sinusoidal AC voltage or current.
摘要翻译： 提供了用于从诸如光伏电池或燃料电池的发电机获得电力的方法，电路和系统。 方法，电路和系统包括将来自发电机的基本上DC输出功率转换成高频AC电压，同时抑制或最小化来自发电机的输出功率的振荡; 将高频交流电压转换成高频大致正弦电压或电流; 并将高频大体正弦交流电压或电流转换为（i）直流电压或电流，以及（ii）低频大致正弦交流电压或电流; 其中所述高频大体上正弦的AC电压或电流与所述直流电压或电流或所述低频大体正弦交流电压或电流隔离。
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公开(公告)号：US20110264288A1
公开(公告)日：2011-10-27
申请号：US13094207
申请日：2011-04-26
IPC分类号： G06F1/28
摘要： A maximum power point tracking method and system for use with a power generator comprises sampling instantaneous output voltage and current of the power generator at a first instant in time and at a second instant in time to obtain first and second power samples, generating a reference voltage or current signal from a difference of the first and second power samples; comparing the reference voltage or current to the instantaneous power generator voltage or current and generating at least one gating signal; and repeating so as to minimize the difference of the first and second power samples; wherein the gating signal affects magnitude of the output voltage and current of the power generator; wherein the maximum power point is tracked when the difference signal is minimized. The power generator may be at least one photovoltaic cell, wind turbine, or fuel cell.
摘要翻译： 用于发电机的最大功率点跟踪方法和系统包括在时间和时间的第二时刻对发电机的瞬时输出电压和电流进行采样，以获得第一和第二功率采样，产生参考电压 或来自第一和第二功率样本的差的当前信号; 将参考电压或电流与瞬时发电机电压或电流进行比较并产生至少一个选通信号; 并重复以使所述第一和第二功率样本的差异最小化; 其中门控信号影响发电机的输出电压和电流的大小; 其中当差信号最小化时跟踪最大功率点。 发电机可以是至少一个光伏电池，风力涡轮机或燃料电池。
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公开(公告)号：US08612058B2
公开(公告)日：2013-12-17
申请号：US13094207
申请日：2011-04-26
IPC分类号： G05D27/00
摘要： A maximum power point tracking method and system for use with a power generator comprises sampling instantaneous output voltage and current of the power generator at a first instant in time and at a second instant in time to obtain first and second power samples, generating a reference voltage or current signal from a difference of the first and second power samples; comparing the reference voltage or current to the instantaneous power generator voltage or current and generating at least one gating signal; and repeating so as to minimize the difference of the first and second power samples; wherein the gating signal affects magnitude of the output voltage and current of the power generator; wherein the maximum power point is tracked when the difference signal is minimized. The power generator may be at least one photovoltaic cell, wind turbine, or fuel cell.
摘要翻译： 用于发电机的最大功率点跟踪方法和系统包括在时间和时间的第二时刻对发电机的瞬时输出电压和电流进行采样，以获得第一和第二功率采样，产生参考电压 或来自第一和第二功率样本的差的当前信号; 将参考电压或电流与瞬时发电机电压或电流进行比较并产生至少一个选通信号; 并重复以使所述第一和第二功率样本的差异最小化; 其中门控信号影响发电机的输出电压和电流的大小; 其中当差信号最小化时跟踪最大功率点。 发电机可以是至少一个光伏电池，风力涡轮机或燃料电池。
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公开(公告)号：US08688287B2
公开(公告)日：2014-04-01
申请号：US12884822
申请日：2010-09-17
IPC分类号： G05D3/12
CPC分类号： H02M1/12 , G05F1/67 , G05F1/70 , H02J3/01 , H02J3/18 , H02J3/383 , H02M1/14 , H02M1/36 , H02M1/42 , H02M7/44 , H02M2001/0012 , Y02E10/563 , Y02E10/58 , Y02E10/763 , Y02E40/30 , Y02E40/40
摘要： Described herein are methods, systems, and apparatus for a controller for a power circuit that interfaces distributed power generation with a power distribution grid, comprising: a first portion, including a maximum power point tracker, that receives signals corresponding to the distributed power generation voltage and current, and outputs to the power circuit a signal for controlling the voltage of the distributed power generation; a second portion, including a current reference generator, a current controller, and a dc voltage controller, that receives signals corresponding to a dc voltage of the power circuit, the power distribution grid voltage and current, and the inverter current, and outputs signals for controlling the power circuit output voltage; wherein the current reference generator includes nonlinear circuit elements and generates a current reference signal from the dc voltage of the power circuit and the grid voltage and current; such that substantially harmonic-free power is injected into the power distribution grid. The distributed power generation may be, for example, a photovoltaic module or a wind turbine.
摘要翻译： 这里描述了用于将分布式发电与配电网接口的电力电路的控制器的方法，系统和装置，包括：第一部分，包括最大功率点跟踪器，其接收对应于分布式发电电压的信号 和电流，并且向电力电路输出用于控制分布式发电的电压的信号; 第二部分，包括电流参考发生器，电流控制器和直流电压控制器，其接收对应于电力电路的直流电压，配电网电压和电流以及逆变器电流的信号，并且输出用于 控制电源电路输出电压; 其中所述电流参考发生器包括非线性电路元件，并从所述电源电路的直流电压和所述电网电压和电流产生电流参考信号; 使得基本上无谐波的功率被注入到配电网中。 分布式发电可以是例如光伏模块或风力涡轮机。
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公开(公告)号：US20100236612A1
公开(公告)日：2010-09-23
申请号：US12709166
申请日：2010-02-19
CPC分类号： H02M1/14 , G05F1/67 , H01L31/02021 , H02J3/383 , H02M1/12 , H02M7/48 , Y02E10/563 , Y02E10/58
摘要： Provided is a maximum power point (MPP) tracker for a PV cell inverter, and a PV cell inverter. The MPP tracker decouples output power oscillations from the input power generation and extracts maximum available power from the PV cell. The PV cell inverter uses the MPP tracker and generates a sinusoidal output current from the MPP tracker output. The sinusoidal output current may be fed to a power distribution grid. The PV cell inverter may use a pulse width modulation technique to cancel harmonics in the sinusoidal output current. The circuits use a minimum number of components and avoid use of large electrolytic capacitors.
摘要翻译： 提供了用于PV电池逆变器的最大功率点（MPP）跟踪器和PV电池逆变器。 MPP跟踪器将输出功率振荡与输入发电分离，并提取PV电池的最大可用功率。 PV电池逆变器使用MPP跟踪器，并从MPP跟踪器输出产生正弦输出电流。 正弦输出电流可以馈送到配电网。 PV电池逆变器可以使用脉冲宽度调制技术来消除正弦输出电流中的谐波。 电路使用最少数量的元件，避免使用大型电解电容器。
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公开(公告)号：US08670249B2
公开(公告)日：2014-03-11
申请号：US12709166
申请日：2010-02-19
CPC分类号： H02M1/14 , G05F1/67 , H01L31/02021 , H02J3/383 , H02M1/12 , H02M7/48 , Y02E10/563 , Y02E10/58
摘要： Provided is a maximum power point (MPP) tracker for a PV cell inverter, and a PV cell inverter. The MPP tracker decouples output power oscillations from the input power generation and extracts maximum available power from the PV cell. The PV cell inverter uses the MPP tracker and generates a sinusoidal output current from the MPP tracker output. The sinusoidal output current may be fed to a power distribution grid. The PV cell inverter may use a pulse width modulation technique to cancel harmonics in the sinusoidal output current. The circuits use a minimum number of components and avoid use of large electrolytic capacitors.
摘要翻译： 提供了用于PV电池逆变器的最大功率点（MPP）跟踪器和PV电池逆变器。 MPP跟踪器将输出功率振荡与输入发电分离，并提取PV电池的最大可用功率。 PV电池逆变器使用MPP跟踪器，并从MPP跟踪器输出产生正弦输出电流。 正弦输出电流可以馈送到配电网。 PV电池逆变器可以使用脉冲宽度调制技术来消除正弦输出电流中的谐波。 电路使用最少数量的元件，避免使用大型电解电容器。
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公开(公告)号：US08284576B2
公开(公告)日：2012-10-09
申请号：US12761472
申请日：2010-04-16
IPC分类号： H02J1/10
CPC分类号： H02M3/33584 , H02M2001/0032 , Y02B70/16
摘要： A multi-module bidirectional power converter may comprise a low side common node, a high side common node and at least first and second bidirectional DC/DC converter modules. The modules may comprise first and second low voltage switches, first and second high voltage switches and a transformer. The transformer may comprise a low side winding having first and second legs and a high side winding having first and second legs. The first leg of the low side winding may be connected with the first and second low voltage switches of the module. The second leg of the low side winding may be connected with the low side common node of the multi-module bidirectional power converter. The first leg of the high side winding may be connected with the first and second high voltage switches of the module. The second leg of the high side winding may be connected to the high side common node of the multi-module bidirectional power converter. Such an arrangement may provide operability of the multi-module bidirectional power converter with any one or more of the modules so that efficiency is maintained when electrical loads are high and so that Zero Voltage Switching is maintained when electrical loads are low.
摘要翻译： 多模块双向功率转换器可以包括低侧公共节点，高侧公共节点和至少第一和第二双向DC / DC转换器模块。 模块可以包括第一和第二低压开关，第一和第二高压开关和变压器。 变压器可以包括具有第一和第二腿部的低侧绕组和具有第一和第二腿部的高侧绕组。 低端绕组的第一段可以与模块的第一和第二低压开关连接。 低侧绕组的第二支路可以与多模块双向功率转换器的低侧公共节点连接。 高边绕组的第一段可以与模块的第一和第二高压开关连接。 高侧绕组的第二支路可以连接到多模块双向功率转换器的高侧公共节点。 这种布置可以提供多模块双向功率转换器与任何一个或多个模块的可操作性，使得当电负载高时保持效率，并且使得当电负载低时维持零电压开关。
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公开(公告)号：US09543859B2
公开(公告)日：2017-01-10
申请号：US14604412
申请日：2015-01-23
IPC分类号： H02M7/797 , H02M7/5387
CPC分类号： H02M7/797 , H02J3/18 , H02M7/53871 , H02M2007/53876 , Y02E40/30
摘要： Systems, methods, and devices for use with active/reactive power control in power conditioning systems. To provide quick active/reactive power control by way of a grid-connected inverter, an estimator estimates the P and Q coefficients based on an instantaneous power from the grid-connected inverter. The estimator receives grid current and voltage and estimates of the P and Q coefficients are used with reference P and Q values to determine whether active or reactive power needs to be injected to the grid. The P coefficient is a DC offset of the instantaneous power of the grid and the Q coefficient is the coefficient of a sine component of the instantaneous power.
摘要翻译： 用于功率调节系统中的有功/无功功率控制的系统，方法和装置。 为了通过并网逆变器提供快速有功/无功功率控制，估计器基于并网逆变器的瞬时功率来估计P和Q系数。 估计器接收电网电流和电压，并使用P和Q系数的估计与参考P和Q值来确定有功或无功功率是否需要注入电网。 P系数是电网的瞬时功率的直流偏移，Q系数是瞬时功率的正弦分量的系数。
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