基于直接转矩控制的电动叉车驱动系统理论研究

电能作为能源应用于工程车辆,具有零排放无污染的突出优点,开发前景十分广阔。驱动电机及其控制系统是电动汽车动力系统中的核心部分,异步电机以其体积小,维护简单、可靠性高等优点在电动工程车辆中得到最广泛的应用。主要研究电动叉车交流控制系统,根据电动叉车的性能指标,分析电动叉车驱动系统和各种驱动电机的优缺点,讨论了交流调速控制技术的发展和现状,采用空间电压矢量分析方法分析了直接转矩控制的基本原理、结构和算法。

THE TESEACH BASED ON DIRECT TORQUE CONTROL SYSTEM FOR ELECTRIC FORKLIFT

Electrical Energy, as a kind of energy source which applies to engineering vehicles, has an outstanding advantage of zero emission, and no pollution, with an extremely broad developing prospect. Driving motor and its controlingcontrolling system are the hard-core of the whole system of electric vehicle. Asynchronous motor, with its distinctive dcharacteristics of small size, simple maintenance, and high reliability, has been widely apply to Electric engineering vehicles.This thesis We studieds the exchange AC control system of Electric forklift. According to the performance index needed byof the Electric forklift, the thesiswe analyzedses the advantage and disadvantage of the drive system of Electric vehicle and advantage and disadvantage of all kinds of motor, discusseds the development and current situations of AC adjustable speed control technology, and further analyzeds the basic principles, structures and algorithms of DTC by using the analysing methodology of space voltage vector.