摘要
针对地铁车辆辅助逆变器方案设计进行研究,分析了常用的5种辅助逆变器方案,可知两电平加工频变压器隔离方案和直直变换加高频变压器隔离方案具有优势,但后者需增加一个工频变压器来产生220 V输出电压,增加了系统的体积和重量。因此,选取两电平加工频变压器隔离方案作为辅助逆变器方案。辅助逆变器采用输出电压、电流瞬时值反馈双闭环控制,通过正弦脉宽调制(SPWM)控制策略,实现辅助逆变器的逆变控制,以输出稳定的三相交流电压。最后,通过仿真验证了此方案的可行性,实验结果也达到了预期目标。
For the design of metro vehicle auxiliary inverter scheme, five kinds of used auxiliary inverter schemes are introduced, and the two-level scheme with the power-frequency transformer isolation and the DC/DC converter scheme with the high-frequency transformer isolation relatively have some advantages, but the DC/DC converter scheme which needs to add a power-frequency transformer generates the output voltage of 220 V, so this increases the volume and weight of the system.Therefore ,the two-level scheme with the power-frequency transformer isolation is selected as the proposed auxiliary inverter scheme.The dual closed loop control with instantaneous voltage and current feedback is used by the auxiliary inverter, through the sine pulse width modulation（SPWM） control strategy, the inverter control of the auxiliary inverter is realized and the steady three-phase AC voltage is outputted.Finally, the simulation verifies the feasibility of this scheme and the experimental results achieve the expected goal.
出处
《电力电子技术》
CSCD
北大核心
2014年第3期54-55,60,共3页
Power Electronics
关键词
逆变器
双闭环控制
正弦脉宽调制
inverter
dual closed loop control
sine pulse width modulation
