中文摘要：

IGBT串联技术的关键在于保持每个IGBT开通或关断同步，至少应该保证任何时刻，尤其在IGBT开通或关断过程中，使每个IGBT的电压不能超过其额定值。为了达到这个目的，在研究多种IGBT串联的控制方法．后，采用了一种结构简单、控制容易的均压辅助电路并对其工作机理进行了详尽的说明。实验结果表明，所采用的辅助分压电路在IGBT串联运行时能够很好地抑制IGBT开通和关断不同步造成的过电压，能够使开关不同步造成的过电压≤10％，确保IGBT串联顺利运行。对工程实际具有一定的参考意义。

英文摘要：

The key point of IGBT-series technology is to keep each connected IGBT in a circuit turned on or turned off synchronously. The voltage across every IGBT can not surpass its rated voltage value, especially at the moment of turning on or turning off IGBTs. In order to achieve the goal, we introduced a simple easily controlled circuit and used it to make voltage across every IGBT equal, and verified how the circuit works in detail, which can further be approved by the experiment data. Experimental data shows that the auxiliary sharing-voltage circuit taken in the article can diminish overvoltage across IGBTs obviously, which is generated because of IGBTs turned on or off at different time. The overvoltage can be limited to no more than 10% of IGBT static voltage so as to guarantee that a circuit including IGBT series can be operated in a good state.