【摘要】 提出一种异步电动机调速系统即矩阵变换器-直接转矩控制(MC-DTC)系统,用以实现异步电动机转速可调。MC调制策略采用双电压控制法,引入占空比负反馈进行闭环控制。MC-DTC系统具备MC和DTC技术的双重优点。对该控制系统进行了仿真和样机设计。结果证明了所选策略的可行性和系统良好的动、静态性能。更多还原

【Abstract】 A novel adjustable speed system for matrix converter(MC) is proposed which can implement the direct torque control(DTC) of induction motors.A closed-loop control method for the MC based on double line-to-line voltage synthesis has been used in the system.The method is valid to suppress the distortion of output voltages and currents.The new MC-DTC system has double excellence of both advanced technologies.Some simulations and the laboratorial prototype show the effectiveness of the control method and prove the system has good static state and dynamic performance.更多还原