交流电动控制技术在叉车中的应用研究

Application research of AC invertor technology in electrical forklift truck

交流控制器是交流电动叉车的核心,如何选择并应用好交流控制器非常重要。针对因交流控制器选型不当而出现的"电机及控制器频繁热保护,比直流系统更加费电"的问题,从目前叉车常用驱动和控制技术入手,通过理论和实际应用,分析了不同控制技术的优缺点,为交流叉车控制系统的合理应用提出了可供参考的意见。试验结果表明,矢量控制技术在牵引控制系统中有明显优势,而起升系统中可以采用滑差控制技术,但滑差控制器的参数一定要与电机匹配好。

AC controller is the core part of AC electric forklift trucks.It is very important on choosing the proper AC controller.Aiming at the condition when forklift is installed with improper AC controller,which will result in frequent heat protection of motor and controller as well as more energy consuming than the DC forklift,beginning from the normal driving and controlling technology of AC forklift trucks,by analyzing the advantages and disadvantages of different controlling technology from theory and actual practice,certain suggestions concerning the proper utilization of controlling system on electric forklift truck were provided.According to the research experiment,more apparent advantages can be witnessed on the utilization of vector controlling technique in truck＇s driving control system.Slip controlling technique is suggested to be applied on lifting system.Special attention should be paid to the match between data from slip controller and the electric motor.