公开(公告)号：US20160006366A1

公开(公告)日：2016-01-07

申请号：US14855808

申请日：2015-09-16

Applicant: SMA Solar Technology AG

Inventor： Vitali Sakschewski ,  Stijn Stevens ,  Christian Hardt

IPC: H02M7/44

CPC classification number: H02M7/44 ,  H02J3/383 ,  H02M1/32 ,  H02M7/53875 ,  Y02E10/563

Abstract: A method for operating an inverter which is connected to an energy supply grid via a transformer for feeding in electrical energy into the energy supply grid, includes measuring output currents and output voltages of the inverter, and actuating power switches of the inverter using actuation signals that are generated as a function of the measured output currents and the measured output voltages at a fundamental frequency of the energy supply grid. The actuation signals are further generated as a function of a harmonic component of the measured output voltages of the inverter at a multiple of the fundamental frequency using a control loop with positive feedback.

Abstract translation: 一种用于操作变频器的方法，所述逆变器通过变压器连接到能量供应电网以将电能馈送到所述能量供应电网中，包括测量所述逆变器的输出电流和输出电压，以及使用致动信号致动所述逆变器的功率开关 作为测量的输出电流和测量的输出电压在能量供应网格的基频处的函数产生。 使用具有正反馈的控制回路，进一步产生致动信号作为以基频倍数的测量的输出电压的谐波分量的函数。

公开(公告)号：US20150115722A1

公开(公告)日：2015-04-30

申请号：US14571481

申请日：2014-12-16

Applicant: SMA Solar Technology AG

Inventor： Yehia Tarek Fawzy ,  Daniel Premm ,  Vitali Sakschewski ,  Stijn Stevens ,  Christian Tschendel

IPC: H02J3/38 ,  H02M7/44

CPC classification number: H02J3/38 ,  H02J3/18 ,  H02M7/44 ,  Y02E40/30 ,  Y10T307/707

Abstract: In order to control a plurality of inverters, which are connected on their input side to a current source each and on their output side to a common grid connection point, electrical variables are measured at the individual inverters and are used for controlling the individual inverters, currents being output by the individual inverters depending on the electrical variables measured at the location of the individual inverters Effects of the connection equipment between the individual inverters and the common grid connection point on currents are determined, electrical variables being measured at the grid connection point and are set in relation to the electrical variables measured at the same time at the individual inverters. The connection equipment between the individual inverters and the common grid connection point is taken into consideration in controlling the individual inverters.

Abstract translation: 为了将其输入侧的电流源和其输出侧的电流源连接到公共电网连接点的多个逆变器，在各个逆变器处测量电变量，并用于控制各个逆变器， 各个逆变器根据各个逆变器的位置测量的电气变量输出的电流被确定，各个逆变器与公共电网连接点之间的连接设备对电流的影响被确定，电变量在电网连接点和 相对于在各个逆变器处同时测量的电变量设定。 在控制各个逆变器时，考虑各个逆变器与公共电网连接点之间的连接设备。