摘要
建立了三相电压型PWM整流器的数学模型,控制系统采用T-U坐标系下的比例谐振双闭环控制策略,实现了交流电流信号无静差跟踪指令值。采用差值SVPWM算法在每个控制周期内计算三相电压差值得到基本空间矢量的作用时间,避免了坐标变换、三角函数运算。仿真结果验证了差值SVPWM算法和采用比例谐振控制器的双闭环控制策略的正确性。
This paper establishes the mathematic model of three-phased voltage source PWM rectifier. Double closed-loop with proportional resonant （PR） control strategy based on two-phased stationary coor- dinate, is adopted in control system, which solves the problem of static phase error existing in the AC side current. In per control period, the dwelling time of basic voltage vector can be calculated by the three- phased voltage dispersion using dispersion SVPWM algorithm without coordinate transformation, trigono- metric function, which simplifies the conventional SVPWM algorithm. The simulation results demonstrate the correctness of the design.
出处
《河北工程技术高等专科学校学报》
2013年第3期27-31,共5页
Journal of Hebei Engineering and Technical College Quarterly
