IGBT series connection under Active Voltage Control
IGBT series connection under Active Voltage Control
复制标题
有源电压控制下的IGBT串联
DOI：
--
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Z. Wang
中科院分区：
文献类型：
--
作者：
WeiWei He;P. Palmer;Xueqiang Zhang;Mark Snook;Z. Wang
本文提出了一种用于绝缘栅双极晶体管串联连接和二极管恢复控制的有源电压控制（AVC）技术。AVC技术可以根据预先设定的参考信号控制IGBT的开关轨迹。在串联连接中，每个串联连接的IGBT都遵循参考电压，从而实现动态电压共享。对于静态电压平衡，AVC技术可以将集电极到发射极的最高电压箝位到预设的箝位电压水平。通过选择夹紧电压的值，可以将串联igbt之间的差控制在可接受的范围内。AVC的另一个关键优势是，通过改变导通时的参考信号，可以优化二极管的恢复。
In this paper an Active Voltage Control (AVC) technique is presented, for series connection of insulated-gate-bipolar-transistors (IGBT) and control of diode recovery. The AVC technique can control the switching trajectory of an IGBT according to a pre-set reference signal. In series connections, every series connected IGBT follows the reference and so that the dynamic voltage sharing is achieved. For the static voltage balancing, the AVC technique can clamp the highest collector-to-emitter voltage to a pre-set clamping voltage level. By selecting the value of the clamping voltage, the difference among series connected IGBTs can be controlled in an accepted range. Another key advantage for AVC is that by changing the reference signal at turn-on, the diode recovery can be optimized.