摘要
根据所提出的新型相位幅值控制算法,结合三相PWM整流器的状态空间方程,通过坐标变换和小信号分析推导出以变流器前端电压滞后角x 作为输入量同输出直流电压Udc作为输出量的三阶传递函数,并合理简化成为一阶传递函数。揭示了系统的内在关系,为系统设计提供了理论依据。通过仿真和实验证明了理论分析的正确性。
S:A novel algorithm of the phase and amplitude control of three-phase source PWM rectifiers is presented. The phase angle x of the front end voltage of a rectifier is regarded as the input variable and the output DC voltage UDC is used as the output variable. The three-order transfer function between the output DC voltage UDC and the phase angle x is deduced through the coordinate transforming and the small signal analysis and is reasonably reduced to an one-order transfer function. The internal relations of the system are unveiled. The mathematical model is used for the system design and the control algorithm are implemented in a digital-signal processor. The theoretical analysis is verified by the simulations and experiments.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2003年第7期28-31,共4页
Proceedings of the CSEE
基金
国家自然科学基金项目(59577007)。~~
