摘要：　　建立在滯環(huán)控制和逆變器電壓狀態(tài)選擇基礎(chǔ)上的直接轉(zhuǎn)矩控制，實(shí)現(xiàn)簡(jiǎn)單，能提供對(duì)電機(jī)轉(zhuǎn)矩轉(zhuǎn)速的快速動(dòng)態(tài)響應(yīng)。本文分析了低速運(yùn)行時(shí)定子磁鏈幅值下降的原因，提出一種在傳統(tǒng)狀態(tài)選擇基礎(chǔ)上的區(qū)段細(xì)分策略，較好地改善了定子磁鏈，經(jīng)計(jì)算機(jī)仿真效果較好。 敘詞：異步電動(dòng)機(jī) 直接轉(zhuǎn)矩控制 定子磁鏈 電壓狀態(tài)選擇 Abstract：　　DTC based on hysteresis control and inverter voltage state choice can be implemented easily and has fast dynamic response to torque and speed. This paper analyzes the reason for the reduction of stator flux, and presents a strategy of precisely dividing sector based on conventional voltage state choice, improves the stator flux obviously. The simulation results verify the validity of the proposed strategy. Keyword：induction motor direct torque control(DTC) stator flux voltage state choice