METHOD FOR OPTIMIZING VOLTAGE SELF-ADAPTATION CONTROL BASED ON IGBT SERIES LOSS

摘要

A method for optimizing voltage self-adaption control based on IGBT series loss. The method comprises the following steps: (1) detecting a voltage at an IGBT end; (2) adjusting a main switching stage time; and (3) adjusting a preliminary switching stage time. By means of the method, when the IGBTs are connected in series, the voltage balance degree is improved, the switching loss is reduced, and the switching voltage stress is controllable.