【摘要】 提出了一种基于自耦变压器的24脉波整流直流电机供电与控制系统。该系统利用自耦变压器移相输出24脉波动的直流电压为直流电机供电,采用PI调节的转速、电流双闭环方式控制直流电机。给出了直流电机供电与控制系统结构,分析了系统整流单元的输出特性,并将所设计系统在不同转速下网侧电压、电流谐波含量与传统直流电机调速系统谐波含量进行了对比。实验证明,所提出的直流供电与控制系统能够有效降低对网侧的谐波污染,提高直流电机运行的平稳度。更多还原

【Abstract】 This paper presents a 24-pulse rectifying DC power supply and control system based on autotransformer.Phase-shifting autotransformer is conducted to generate DC voltage with 24-pulse waves for the power supply of DC motor.PI controller is adopted in speed loop and current loop of DC motor regulating system.Voltage and current harmonic components are analyzed and compared with traditional double-loop DC speed regulating system.The experimental results prove that the proposed system can reduce the harmonic pollution and smooth the operation of DC motor effectively.更多还原