华南理工大学学报（自然科学版）
華南理工大學學報（自然科學版）
화남리공대학학보（자연과학판）
JOURNAL OF SOUTH CHINA UNIVERSITY OF TECHNOLOGY(NATURAL SCIENCE EDITION)
2009年
11期
83-87,106
,共6页
PWM整流器%PI控制器%直接功率控制%滑模变结构%仿真
PWM整流器%PI控製器%直接功率控製%滑模變結構%倣真
PWM정류기%PI공제기%직접공솔공제%활모변결구%방진
PWM rectifier%PI controller%direct power control%sliding-mode variable structure%simulation
研究了一种基于滑模变结构控制理论的三相脉宽调制(PWM)整流器直接功率控制方案,利用滑模变结构控制系统鲁棒性和动态性能较好、参数整定简单的优点,解决了传统的基于PI算法的直接功率控制系统抗扰性能差、对PI控制参数较敏感、网侧电流总谐波含量较大的缺点.在Matlab/Simulink环境中建立仿真模型,对滑模控制和PI控制两种方案进行仿真比较,结果表明滑模控制方案明显优于PI控制方案.
研究瞭一種基于滑模變結構控製理論的三相脈寬調製(PWM)整流器直接功率控製方案,利用滑模變結構控製繫統魯棒性和動態性能較好、參數整定簡單的優點,解決瞭傳統的基于PI算法的直接功率控製繫統抗擾性能差、對PI控製參數較敏感、網側電流總諧波含量較大的缺點.在Matlab/Simulink環境中建立倣真模型,對滑模控製和PI控製兩種方案進行倣真比較,結果錶明滑模控製方案明顯優于PI控製方案.
연구료일충기우활모변결구공제이론적삼상맥관조제(PWM)정류기직접공솔공제방안,이용활모변결구공제계통로봉성화동태성능교호、삼수정정간단적우점,해결료전통적기우PI산법적직접공솔공제계통항우성능차、대PI공제삼수교민감、망측전류총해파함량교대적결점.재Matlab/Simulink배경중건립방진모형,대활모공제화PI공제량충방안진행방진비교,결과표명활모공제방안명현우우PI공제방안.
Proposed in this paper is a direct power control scheme for three-phase PWM rectifiers based on the sli-ding-mode variable-structure control theory.In this scheme, the slide-mode variable-structure control system with strong robustness, excellent dynamic performance and simple parameter tuning is employed to remedy the shortco-mings of the conventional direct power control system based on PI algorithms, namely high sensitivity to external disturbances and PI parameters and large total harmonic distortion (THD) of line current.Then, both the proposed and the conventional PI-based control schemes for three-phase PWM rectifiers are modeled and compared in Matlab/Simulink simulation environment.The results show that the proposed scheme is superior to the conventional one.
