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公开(公告)号：US09461553B2
公开(公告)日：2016-10-04
申请号：US14550487
申请日：2014-11-21
CPC分类号： H02J3/383 , H02M1/083 , H02M3/33507 , H02M3/33569 , H02M3/337 , H02M2001/0058 , H02M2001/007 , Y02B70/1491 , Y02E10/563
摘要： Systems, methods, and devices for use in a DC/DC converter. A circuit uses a full-bridge power semiconductor subcircuit along with a high power transformer subcircuit, a diode bridge subcircuit, and a parallel capacitor to provide galvanic isolation and boost the voltage from a power source such as a photovoltaic panel. To ensure zero voltage switching for the power semiconductors, either a passive auxiliary subcircuit or an inductor coupled in parallel to a transformer in the transformer subcircuit may be used. A controller which derives its timing signals from the transformer primary current is used to control the timing of the power semiconductors in the circuit. The circuit and its controller allows for self-adjusting regardless of load and uses the entire switching cycle to be used for power transfer.
摘要翻译： 用于DC / DC转换器的系统，方法和设备。 电路使用全桥功率半导体子电路以及高功率变压器子电路，二极管桥接电路和并联电容器来提供电流隔离并且提高来自诸如光伏面板的电源的电压。 为了确保功率半导体的零电压切换，可以使用与变压器子电路中的变压器并联的无源辅助分支电路或电感器。 使用从变压器初级电流导出其定时信号的控制器来控制电路中的功率半导体的时序。 该电路及其控制器允许在不管负载的情况下进行自调整，并将整个开关周期用于电力传输。
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公开(公告)号：US09571005B2
公开(公告)日：2017-02-14
申请号：US14590684
申请日：2015-01-06
CPC分类号： H02M7/5387 , H02M1/126 , H02M2001/0058 , H02M2007/4815 , Y02B70/1441 , Y02B70/1491
摘要： Systems and methods relating to zero voltage switching for inverters. A full bridge inverter is used in conjunction with a passive auxiliary circuit and an output filter. A control system controls the current by way of the auxiliary circuit and injects a high quality current to a power grid. The control system adjusts the duty ratio and switching frequency of the gate pulses applied to the power semiconductors in the full-bridge inverter. As well, the control system adjusts the phase shift between gate pulses for both the leading leg and lagging leg power semiconductors to control the current passing through the auxiliary circuit.
摘要翻译： 与逆变器的零电压开关相关的系统和方法。 全桥逆变器与无源辅助电路和输出滤波器结合使用。 控制系统通过辅助电路控制电流，并向电网注入高质量的电流。 控制系统调整施加到全桥逆变器中的功率半导体的栅极脉冲的占空比和开关频率。 同样，控制系统调节前腿和滞后脚功率半导体的门脉冲之间的相移，以控制通过辅助电路的电流。
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公开(公告)号：US09935562B2
公开(公告)日：2018-04-03
申请号：US14845037
申请日：2015-09-03
申请人： Suzan Eren , Majid Pahlevaninezhad , Shangzhi Pan , Praveen Jain
发明人： Suzan Eren , Majid Pahlevaninezhad , Shangzhi Pan , Praveen Jain
CPC分类号： H02M7/5387 , H02M1/126 , H02M2001/0058 , H02M2001/0064 , H02M2007/4815 , Y02B70/1441 , Y02B70/1491
摘要： Systems, methods, and devices relating to a DC/AC inverter. The inverter has a full bridge converter and an output filter with an integrated magnetic subcircuit. The subcircuit has main and auxiliary inductors and is designed to steer the current ripple of the inverter's output to the power semiconductors in the full bridge converter. By doing so, zero voltage switching is achieved by the power semiconductors, thereby mitigating switching losses. At the same time the current ripple in the inverter's output is attenuated.
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公开(公告)号：US09859714B2
公开(公告)日：2018-01-02
申请号：US14743571
申请日：2015-06-18
CPC分类号： H02J3/382 , H02J1/102 , H02J3/28 , H02J3/383 , H02J3/385 , H02J3/386 , H02M7/48 , H02M2001/007 , Y02E10/563 , Y02E10/58 , Y02E10/763
摘要： Systems, methods, and devices relating to power converters. A power conditioning system uses multiple DC/DC power converter blocks. The output of each of the converter blocks is received by an energy storage and combiner block. The output of the combiner block is then received by a DC/AC inverter. The various components of the power conditioning system are controlled by a central controller. The power semiconductors within each DC/DC converter are controlled by a subsystem of the central controller and MPPT is also provided by the central controller. Also provided for are a novel three-phase DC/AC inverter topology with reduced output ripple and a control scheme for controlling the power semiconductors in the DC/AC inverter.
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公开(公告)号：US10063057B2
公开(公告)日：2018-08-28
申请号：US14921629
申请日：2015-10-23
申请人： Suzan Eren , Majid Pahlevaninezhad , Shangzhi Pan , Praveen Jain
发明人： Suzan Eren , Majid Pahlevaninezhad , Shangzhi Pan , Praveen Jain
CPC分类号： H02J3/385 , H01L31/02021 , Y02E10/58
摘要： Systems, methods, and devices relating to the control of power conditioning systems. For a micro-inverter, a controller block controls the DC/DC converter while a separate controller block controls the DC/AC inverter. A dynamic maximum efficiency tracker (DMET) control block receives state variable outputs from the converter and the inverter. The control block then perturbs specific control input parameters for the converter and the inverter and determines the effect of the perturbation on the converter and inverter efficiencies and on micro-inverter efficiency as a whole. If the efficiency decreases, then the direction of the perturbation is reversed. Other system control tasks, such as maximum power point tracking and DC-bus voltage regulation can be performed concurrently by adjusting other control input parameters.
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公开(公告)号：US10050445B2
公开(公告)日：2018-08-14
申请号：US15209439
申请日：2016-07-13
申请人： Majid Pahlevaninezhad , Suzan Eren , Shangzhi Pan , Praveen Jain
发明人： Majid Pahlevaninezhad , Suzan Eren , Shangzhi Pan , Praveen Jain
摘要： Systems, methods, and devices relating to inverters. A control system for use with photovoltaic panel coupled inverters controls the function and operation of the inverter based on the voltage at the point of common coupling. The inverter is operated in either current control mode or in voltage control mode based on whether or not the inverter is coupled to a grid or whether other energy sources are available to control the voltage at the point of common coupling.
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公开(公告)号：US09882389B2
公开(公告)日：2018-01-30
申请号：US15198804
申请日：2016-06-30
CPC分类号： H02J3/383 , H02M1/083 , H02M3/33507 , H02M3/33569 , H02M3/337 , H02M2001/0058 , H02M2001/007 , Y02B70/1491 , Y02E10/563
摘要： Systems, methods, and devices for use in a DC/DC converter. A circuit uses a full-bridge power semiconductor subcircuit along with a high power transformer subcircuit, a diode bridge subcircuit, and a parallel capacitor to provide galvanic isolation and boost the voltage from a power source such as a photovoltaic panel. To ensure zero voltage switching for the power semiconductors, either a passive auxiliary subcircuit or an inductor coupled in parallel to a transformer in the transformer subcircuit may be used. A controller which derives its timing signals from the transformer primary current is used to control the timing of the power semiconductors in the circuit. The circuit and its controller allows for self-adjusting regardless of load and uses the entire switching cycle to be used for power transfer.
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公开(公告)号：US09461551B2
公开(公告)日：2016-10-04
申请号：US14841195
申请日：2015-08-31
IPC分类号： H02M3/335 , H02S40/32 , H02S40/34 , G01R19/00 , G01R21/133 , G01R31/40 , H02M3/337 , H02J3/38 , H02M1/00
CPC分类号： H02M3/33507 , G01R19/0092 , G01R21/133 , H02J3/385 , H02M3/3376 , H02M2001/0009 , H02M2001/0058 , H02S40/32 , H02S40/34 , H02S50/00 , Y02B70/1491 , Y02E10/58
摘要： Systems, methods, and devices for use with photovoltaic micro-inverters. A control system for controlling power switches in a full bridge inverter in a DC/DC converter uses an estimate of the output current of a photovoltaic (PV) panel. The estimate is provided by a current estimator that takes as input the output voltage of the PV panel as well as the bus voltage of the DC/DC converter. Also used as input to the current estimator are two of the control signals for specific power switches in the full bridge inverter in the DC/DC converter.
摘要翻译： 用于光伏微逆变器的系统，方法和设备。 用于控制DC / DC转换器中的全桥逆变器中的功率开关的控制系统使用光伏（PV）面板的输出电流的估计。 该估计由电流估计器提供，该估计器将PV面板的输出电压以及DC / DC转换器的总线电压作为输入。 也用作电流估计器的输入是DC / DC转换器中全桥逆变器中特定功率开关的两个控制信号。
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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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