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    • 2. 发明公开
    • Improved multilevel voltage source converters and systems
    • Verbesserte mehrstufige Spannungsquellenwandler und Systeme
    • EP2816719A2
    • 2014-12-24
    • EP14167709.6
    • 2014-05-09
    • Rockwell Automation Technologies, Inc.
    • Narimani, MehdiWu, BinCheng, ZhongyuanZargari, Navid R.
    • H02M7/483H02M7/487
    • H02M3/07H02M7/483H02M7/487H02M7/49H02M7/5395H02M2007/53876
    • Nested neutral point clamped (NNPC) multilevel power converter stages (100) and systems (300) are presented, in which the converter stage includes an NPC inverter core circuit (110) with a flying (switched) capacitor nesting circuit (104), with the switches of the NPC core (110) and the switched capacitor circuit (104) being gated using selected redundant switching states to control the voltage of the switched capacitors to achieve a multilevel output voltage having equally spaced voltage step values. Multiple inverter stages (100) can meet cascaded or connected in various configurations to implement single or multiphase power conversion systems, and higher output voltages can be achieved by forming to converter stages (100) into an H-bridge configuration, and connecting multiple H-bridge stages in series with one another.
    • 提出了嵌套中性点钳位(NNPC)多电平功率转换器级(100)和系统(300),其中转换器级包括具有飞行(开关)电容器嵌套电路(104)的NPC逆变器核心电路(110) NPC内核(110)和开关电容器电路(104)的开关选择使用选择的冗余切换状态来控制开关电容器的电压,以实现具有相等间隔的电压阶跃值的多电平输出电压。 多个逆变器级(100)可以满足各种配置的级联或连接以实现单相或多相电力转换系统,并且可以通过将转换器级(100)形成为H桥配置来实现更高的输出电压, 桥梁阶段相互串联。