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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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公开(公告)号：US10386396B2
公开(公告)日：2019-08-20
申请号：US14875993
申请日：2015-10-06
申请人： Suzan Eren , Majid Pahlevaninezhad , Shangzhi Pan , Praveen Jain
发明人： Suzan Eren , Majid Pahlevaninezhad , Shangzhi Pan , Praveen Jain
摘要： Systems, methods, and devices relating to the extraction of parameters for a grid voltage. A multi-block hybrid PLL or hybrid observer receives grid voltage. The grid voltage is received by a harmonic/noise decomposer block which separates the harmonic/noise component of the incoming voltage from the clean voltage signal. The clean voltage signal is then output from the PLL/observer. The clean voltage signal is also sent to an amplitude estimator block which estimates the amplitude of the clean voltage signal. The harmonic/noise component of the input voltage signal is sent, along with the clean voltage signal, to a frequency estimator block. The frequency estimator block then determines the phase angle of the incoming signal as well as the frequency of the incoming voltage signal.
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公开(公告)号：US09887640B2
公开(公告)日：2018-02-06
申请号：US14699398
申请日：2015-04-29
申请人： Suzan Eren , Majid Pahlevaninezhad , Shangzhi Pan , Praveen Jain
发明人： Suzan Eren , Majid Pahlevaninezhad , Shangzhi Pan , Praveen Jain
IPC分类号： H02M7/5387 , H02M7/537 , H02M1/12 , H02M7/48
CPC分类号： H02M7/5387 , H02M1/12 , H02M1/126 , H02M7/537 , H02M2007/4803 , Y02B70/1441
摘要： Systems, methods, and devices which eliminate the DC current from the output of grid-connected inverters. A current controller is provided which interfaces with a grid-connected DC/AC inverter. The current controller uses a nonlinear adaptive filter which receives, as input, the output current of the inverter along with grid current frequency. The nonlinear adaptive filter estimates the DC value of the grid current and, in conjunction with an integrator, removes this DC current component. This is done by adjusting the duty cycle of the grid-connected inverter.
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公开(公告)号：US09804627B2
公开(公告)日：2017-10-31
申请号：US14562429
申请日：2014-12-05
CPC分类号： G05F1/67 , H02J3/385 , H02M3/3376 , Y02E10/58 , Y10T307/707
摘要： Systems, methods, and devices relating to the use of multiple DC power generation sources with DC/DC converters to thereby provide AC power suitable for provision to a power grid. Multiple DC power generation sources are each coupled to an input stage with a DC/DC converter. All the DC/DC converters in the multiple input stages are controlled by a single digital controller. Within the single digital controller are controller sub-blocks, each of which generates control signals for a specific DC/DC converter. Each controller sub-block provides multiple functions for improving the performance of the system as a whole.
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公开(公告)号：US09590531B2
公开(公告)日：2017-03-07
申请号：US14621736
申请日：2015-02-13
IPC分类号： H02M7/5387 , H02M1/14 , H02M1/00
CPC分类号： H02M7/5387 , H02M1/14 , H02M7/53871 , H02M2001/0054 , H02M2001/0058 , Y02B70/1491
摘要： Systems, methods, and devices relating to DC/AC converters. A circuit including a full bridge inverter is provided. One leg of power semiconductor subcircuits of the inverter is switched at line frequency while the other leg is soft switched at a higher frequency using an auxiliary circuit. A control system is used to calculate this higher optimal frequency. To minimize the output current ripple in the output filter, the output inductor is coupled to the auxiliary inductor in the auxiliary circuit.
摘要翻译： 与DC / AC转换器相关的系统，方法和设备。 提供了包括全桥逆变器的电路。 逆变器的一条支路的功率半导体子电路以线路频率切换，而另一条支路使用辅助电路以更高的频率软切换。 控制系统用于计算更高的最佳频率。 为了最小化输出滤波器中的输出电流纹波，输出电感耦合到辅助电路中的辅助电感器。
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公开(公告)号：US09343600B2
公开(公告)日：2016-05-17
申请号：US14562128
申请日：2014-12-05
申请人： Haibo Zhang , Jan Dressel , Praveen Jain , Majid Pahlevaninezhad , Shangzhi Pan
发明人： Haibo Zhang , Jan Dressel , Praveen Jain , Majid Pahlevaninezhad , Shangzhi Pan
CPC分类号： H01L31/024 , H02J3/383 , H02S40/32 , H02S40/34 , H02S40/425 , Y02E10/50 , Y02E10/563
摘要： Systems and devices relating to an integrated housing for microinverters. The housing has a cavity for housing the circuitry of the microinverter. The housing is mountable on a back sheet of a PV module by way of the housing's top cover. An opening at the back of the housing accommodates DC contacts coming from the PV module while a void configured for an output port is also present in the housing. When mounted on the PV module, the housing is spaced apart from the module.
摘要翻译： 与微型转换器集成住房相关的系统和设备。 壳体具有用于容纳微逆变器的电路的空腔。 外壳可通过外壳的顶盖安装在光伏组件的背板上。 壳体后部的开口容纳来自PV模块的DC触点，而在外壳中也存在配置为输出端口的空隙。 当安装在PV模块上时，壳体与模块间隔开。
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