摘  要：在建立异步电机直接转矩控制系统的数学模型基础上，介绍了一种以TMS320F2812为主控芯片和智能功率模块作为主电路，采用空间电压矢量脉宽调制技术得到逆变器的开关控制信号的全数异步电机直接转矩控制系统实现，给出了系统的硬件和软件结构。实验结果表明，采用SVPWM技术的异步电机直接转矩控制系统实现简单，性能优良，大大改善了电机的运行品质，提高了电压利用率。
关键词： TMS320F2812；直接转矩控制；智能功率模块；异步电机

Abstract: This paper established the mathematical model of direct torque control scheme of induction motor.Then introduced a scheme of fully digitized direct torque control system is with the DSP TMS320F2812 which works as the core control chip and IPM as main circuit.The control scheme gets the switch control signal of inverter with the space voltage vector modulation technology.The system hardware and software structures were presented in this paper.The test results show that the DTC with SVPWM has many merits such as simple realization,good running performance and high voltage utilization ratio.
Key Words: TMS320F2812；DTC；IPM；Induction motor