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1.发明公开DC-link capacitor voltage balancing for clamped multilevel converter systems with active rectifier by means of reactive power 审中-公开通过无功功率对带有有源整流器的钳位多电平变流器系统进行直流链路电容器电压平衡
公开(公告)号：EP2833538A1
公开(公告)日：2015-02-04
申请号：EP13382307.0
申请日：2013-07-30
发明人： Mazuela Larranaga, Mikel , Baraia Zubiaurre, Igor , Alvarez Hidalgo, Silverio , Atutxa Lekue, Iñigo
摘要： Multilevel power converting apparatus comprising an AFE rectifier (9), an inverter (5), a plurality of capacitors (C 1 , C 2 , C 3 , C 4 ) connected in series forming a capacitor bank (6) as a DC voltage bus arranged between the rectifier (9) and the inverter (5), and a controller adapted for determining if there is an imbalance in the intermediate nodes (of, O 2 , O 3 ). The controller increases the reactive power consumption of the rectifier (9) when they detect an imbalance in order to eliminate or reduce it, and the apparatus (100) comprises compensation means (7) for maintaining the power factor on the alternating-current system (101) as close as possible to the unit, which are arranged in parallel with the alternating-current system (101) and connected to the rectifier (9) and which comprise a behavior opposed to that of the rectifier (9) with respect to the reactive power consumption.
摘要翻译： （9），逆变器（5），串联连接的多个电容器（C1，C2，C3，C4）构成电容器组（6）的多电平功率转换装置，作为设置在整流器 （9）和逆变器（5），以及适于确定（O 2，O 3）的中间节点是否存在不平衡的控制器。 当控制器检测到不平衡以消除或减少它时，控制器增加整流器（9）的无功功率消耗，并且设备（100）包括用于维持交流系统上的功率因数的补偿装置（7） 101）与所述单元尽可能接近地布置，所述单元与所述交流系统（101）并联布置并且连接到所述整流器（9）并且包括与所述整流器（9）相对于所述整流器 无功功耗。
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