CAJ | 학술논문

根据异步电机牵引特性,将电力牵引运行划分为不同调节区,在启动及低速域时,逆变器按脉宽调制方式进行控制,当电机的输出功率达到额定值时,进入方波控制区.针对不同电力运行调节区的特点,研究了一套适合于牵引电机的全速域直接转矩控制算法,同时,采取不同控制算法间切换的过渡策略,有效地避免了磁链和转矩的跳变.最后,基于所建立的仿真模型模拟了异步牵引电机的牵引和制动工况,仿真结果表明该电机驱动系统具有良好的动、静态性能,满足列车运行控制的要求,也验证了该控制方法的正确性和有效性.
근거이보전궤견인특성,장전력견인운행화분위불동조절구,재계동급저속역시,역변기안맥관조제방식진행공제,당전궤적수출공솔체도액정치시,진입방파공제구.침대불동전력운행조절구적특점,연구료일투괄합우견인전궤적전속역직접전구공제산법,동시,채취불동공제산법간절환적과도책략,유효지피면료자련화전구적도변.최후,기우소건립적방진모형모의료이보견인전궤적견인화제동공황,방진결과표명해전궤구동계통구유량호적동、정태성능,만족열차운행공제적요구,야험증료해공제방법적정학성화유효성.
Electric traction operation was divided into different operation regulatory regions according to the characteristic of asynchronous motor. Pulse width modulation (PWM) technique was adopted for inverter when starting and running in low speed range,and square wave control was adopted when the output power of induction motor reached the nominal value. A direct torque control scheme being suitable for traction motor in whole-speed range was discussed,and a feasible transition strategy for algorithm switch was also adopted to avoid the jump of flux and torque. Finally,the traction and braking conditions of induction motor were simulated on the basis of the simulation model built,and simulation results show that the motor drive system can obtain a perfect dynamic and static performance,satisfy with the requirements of train control,and the validity and effectiveness of the adopted control method are verified.