Application research of AC invertor technology in electrical forklift truck

XV Lifang, SONG Wenbin
(Zhejiang Hangcha Engineering Machinery Co.,Ltd., Hangzhou 311300, China)

Abstract: 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.
Key words: forklift truck; slip control; vector control; AC controller