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1.发明授权Method and apparatus for use with grid connected inverters in distributed power generation 有权用于分布式发电的并网逆变器的方法和装置公开(公告)号：US09570970B1
公开(公告)日：2017-02-14
申请号：US14808408
申请日：2015-07-24
申请人： Suzan Eren , Majid Pahlevaninezhad , Praveen Jain
发明人： Suzan Eren , Majid Pahlevaninezhad , Praveen Jain
IPC分类号： H02M1/08 , H02M1/12 , H02M7/5387 , H02M7/44
CPC分类号： H02M1/12 , H02M7/53873 , H02M7/539 , H02M2001/0025 , H02M2007/4815 , Y02B70/1441
摘要： Systems, methods, and devices relating to the controlling of a grid-connected inverter. A grid connected inverter is controlled by a proportional-resonant controller which tracks the grid current. To adjust for changes in grid conditions, an update block dynamically and continuously adjusts coefficients used by the controller to ensure high gains provided by the controller at the grid frequency. A harmonic compensator is also provided to ensure that high loop gains at harmonic frequencies of the grid frequency are also provided for. To also adjust for changing grid conditions, a second update block also continuously adjusts the coefficients used by the harmonic compensator.
摘要翻译： 与并网逆变器的控制相关的系统，方法和设备。 并网逆变器由跟踪电网电流的比例谐振控制器控制。 为了调整电网条件的变化，更新块动态和连续地调整控制器使用的系数，以确保控制器在电网频率下提供的高增益。 还提供谐波补偿器，以确保还提供电网频率谐波频率的高回路增益。 为了也适应于改变电网条件，第二更新块还连续调整谐波补偿器使用的系数。
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公开(公告)号：US09537424B2
公开(公告)日：2017-01-03
申请号：US14674910
申请日：2015-03-31
申请人： Majid Pahlevaninezhad , Suzan Eren , Praveen Jain
发明人： Majid Pahlevaninezhad , Suzan Eren , Praveen Jain
摘要： Systems, methods, and devices for controlling a DC-bus voltage for a power conditioning system. A control system regulates the DC value of the DC-bus voltage. The control system uses an adaptive DC-value estimator/observer to estimate this DC-value. Instead of having to determine the DC-value of a signal with a low frequency ripple without compromising the signal's dynamic response, a suitably precise estimate for that DC-value is used.
摘要翻译： 用于控制功率调节系统的直流母线电压的系统，方法和设备。 控制系统调节直流母线电压的直流值。 控制系统使用自适应DC值估计器/观测器来估计该DC值。 不用必须在不影响信号的动态响应的情况下确定具有低频纹波的信号的DC值，因此使用对该DC值的适当精确的估计。
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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：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：US09729085B2
公开(公告)日：2017-08-08
申请号：US14838505
申请日：2015-08-28
申请人： Majid Pahlevaninezhad , Suzan Eren , Praveen Jain
发明人： Majid Pahlevaninezhad , Suzan Eren , Praveen Jain
IPC分类号： H02M7/538 , H02M7/5387 , H02M1/12 , H02M1/00
CPC分类号： H02M7/53871 , H02M1/126 , H02M2001/0009
摘要： Systems related to controlling a DC/AC converter. A control system uses a nonlinear adaptive observer to estimate the state variables inverter current and converter voltage using a sensed grid current and a bus voltage as inputs. For non-observable points (such as when the duty cycle=0.5), the required information can be found from the DC bus voltage.
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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：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：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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