CAJ | 학술논문

在分析和比较现有交流牵引驱动系统的控制方法的基础上,针对窄轨电机车的实际工程需求,提出了具有最大转矩输出能力的改进型转筹频率控制方法.该方法克服了传统转差频率法PI参数难以确定、电流-转差率曲线难以数字化实现、输出转矩低于最大值等缺点,同时可对重载转矩及直流母线电压进行补偿;仿真和实验表明,新型驱动系统在肩动和拖动过程中均具有较大的转矩输出能力和良好的动态响应特性,提高了牵引性能和系统可靠性,具有良好的工程实用性.
재분석화비교현유교류견인구동계통적공제방법적기출상,침대착궤전궤차적실제공정수구,제출료구유최대전구수출능력적개진형전주빈솔공제방법.해방법극복료전통전차빈솔법PI삼수난이학정、전류-전차솔곡선난이수자화실현、수출전구저우최대치등결점,동시가대중재전구급직류모선전압진행보상;방진화실험표명,신형구동계통재견동화타동과정중균구유교대적전구수출능력화량호적동태향응특성,제고료견인성능화계통가고성,구유량호적공정실용성.
The main control methods of AC motor are introduced and compared.A maximum-torque slip frequency control method is proposed to meet the requirements of mining locomotives and remedys the weaknesses of traditional slip fre-quency control such as the PI parameters are hard to determine,the current-slip curve is hard to realize by MCU and the maximum torque can not be obtained.Simulation and experiment show that the novel system has stable torque control ef-fect in the process of starting and speeding with heavy loads,the control method has the properties of fast response,saving energy more.effectively and being insensitive to the speed detecting error.The properties satisfy the requirements of the project,and the application will be promoted.