公开(公告)号：EP2528222B1

公开(公告)日：2015-03-11

申请号：EP11167795.1

申请日：2011-05-27

申请人： ALSTOM Technology Ltd

发明人： Soeiro, Thiago Batista ,  Kolar, Johann W. ,  Ranstad, Per ,  Linner, Jörgen

IPC分类号： H02M7/487 ,  H02J3/18

CPC分类号： H02M7/487 ,  H02J3/1857 ,  Y02E40/26

公开(公告)号：EP2528222A1

公开(公告)日：2012-11-28

申请号：EP11167795.1

申请日：2011-05-27

申请人： Alstom Technology Ltd

发明人： Soeiro, Thiago Batista ,  Kolar, Johann W. ,  Ranstad, Per ,  Linner, Jörgen

IPC分类号： H02M7/487 ,  H02J3/18

CPC分类号： H02M7/487 ,  H02J3/1857 ,  Y02E40/26

摘要： Proposed is a method for the determination of a control scheme for a neutral point clamped (NPC) voltage source converter (VSC) with at least 3 levels, in particular as a shunt active power filter, with a topology of three bridge legs (21-23) between each of three phases (R,S,T) of a grid (11) and a neutral point (24), each leg (21-23) comprising at least four active switches (T1-T4), wherein there is provided a clamping carrier modulator (1) synchronized with the grid (1) for the control of no-switching intervals, said method comprising at least the following steps:
analyzing the waveform of the grid and/or a load voltage (ILR) and determination of windows (3) defining an allowed period for no switching of the corresponding bridge leg;
operating or simulating the operation of the voltage source converter with different clamping carrier modulator frequencies, and then analyzing the balance in the operating junction temperatures and/or power losses across the active switches and also analyzing the total losses of the voltage source converter; comparing the balance and the total losses of different clamping carrier modulator frequencies and selecting either the clamping carrier modulator frequency according to showing, as primary criterion, the better balance and, as secondary criterion, the lower total losses; operating or simulating the operation of the voltage source converter with the selected clamping carrier modulator frequency, while iteratively changing at least one of the following operating parameters of the voltage source converter: switching frequency, DC-link voltage reference, duty cycle of clamping carrier modulator, phase shift of the clamping carrier modulator relative to the grid, and optimizing the balance in the operating junction temperatures and/or power losses across the active switches and the total losses of the voltage source converter as a function of the adjustment of these operating parameters until reaching optimum operation parameters for the control scheme.

摘要翻译： 提出了一种用于对中性点的控制方案的测定方法钳位（NPC）电压源转换器（VSC）具有至少三个水平（特别是作为并联有源滤波器，具有三个桥臂的拓扑21- 23）每一个网格（11）和中性点（24）的三相（R，S，T）之间，每个腿（21-23），其包括至少四个有源开关（T1-T4），有worin 提供与电网同步的夹紧载波调制器（1）（1）对于没有切换间隔的控制，所述方法包括至少以下步骤：分析所述网格和/或负载电压（ILR）和判定的波形 窗口（3）定义允许用于没有桥相应支柱的切换周期; 操作或模拟运算与不同的夹紧载波调制器的频率的电压源转换器，然后分析在整个有源开关的工作结温度和/或功率损耗平衡等分析该电压源转换器的总损失; 比较平衡和不同的夹紧载波调制器的频率的总损耗和选择所述夹紧载波频率调制器gemäß到表示，作为主要准则，更好的平衡和作为次要标准中，较低的总损失; 操作或与所选择的夹紧载波调制器频率模拟操作的电压源转换器，同时反复地改变所述电压源转换器的以下操作参数中的至少一个：开关频率，直流母线电压参考，夹紧载波调制器的占空因数 ，夹紧支架相对于网格的调制器，以及优化在工作结温度和/或横跨有源开关功率损失和电压源转换器的总损失的合成操作参数的调整的功能的平衡的相位偏移 直到用于控制方案达到最佳操作参数。