【摘要】 开关管的开关速度是影响逆变焊机频率提高的主要因素,通过比较IGBT和MOSFET的优缺点,认为MOSFET焊机可以获得较好的动态响应速度。分析了MOSFET应用时存在的问题,并提出并联栅极强脉冲同步触发的解决方案。仿真显示,该方法可以有效提高MOSFET的并联效果。更多还原

【Abstract】 The speed of switching component is the primary factor that influences boosting frequency of inverter.Compared with IGBT,MOSFET can be used to improve dynamic responding speed.Aiming at the question of applying MOSFET,synchronized trigger circuit of paralleling grid electrode with high-power pulse is designed.The simulation indicates that this circuit can availably improve the parallel connection effect of MOSFET.更多还原