CAJ | 학술논문

针对电动车驱动系统中驱动电路在实际运行过程中发热过大,导致整个系统稳定性较差的问题,将同步整流技术应用到控制器驱动电路中.从PWM控制策略角度出发,提出了一种新的PWM调制方式,它采用低导通电阻的功率MOSFET代替开关变换器中的快恢复二极管,起到了续流二极管的作用,降低了续流时的损耗,减少发热,极大地提高了驱动电路的效率和稳定性.最后通过实验证明了该方法的可行性和优越性.
침대전동차구동계통중구동전로재실제운행과정중발열과대,도치정개계통은정성교차적문제,장동보정류기술응용도공제기구동전로중.종PWM공제책략각도출발,제출료일충신적PWM조제방식,타채용저도통전조적공솔MOSFET대체개관변환기중적쾌회복이겁관,기도료속류이겁관적작용,강저료속류시적손모,감소발열,겁대지제고료구동전로적효솔화은정성.최후통과실험증명료해방법적가행성화우월성.
In view of the low stability of the whole system that caused by the high heating value has been given off by the driving circuit of the electric vehicle power driven system that works in the actual working process,the synchronized rectification technology is applied to the driving circuit of the controller,and in view of PWM control strategy,a new PWM modulation is proposed.The recovery diode using for freewheeling is replaced by MOSFET with low breakover resistance.The loss of freewheeling and the heating is reduced.So the stability and efficiency of driving circuit are highly enhanced.The feasibility and superiority of this design are confirmed by experiments.