电力系统保护与控制2017，Vol.45Issue(5)：38-44,7.DOI:10.7667/PSPC161465
基于微分平坦理论的单相PWM整流器直接功率控制
Differential flatness based direct power control for single-phase PWM rectifier
宋平岗 1朱维昌 1戈旺1
作者信息
- 1. 华东交通大学电气与自动化工程学院,江西南昌330013
- 折叠
摘要
Abstract
A mathematical model of grid voltage and power is established in αβ coordinate system for single-phase PWM rectifier.According to the differential flatness theory,the state variables,outputs and intermediate variables of the control system are chosen,presenting that the differential flatness based direct power control for single-phase PWM rectifier.The controller consists of feed-forward control and nonlinear error feedback compensation.Feed-forward control plans control state variables' reference trajectories according to the desired outputs and nonlinear error feedback compensation adjusts flat outputs of control system to eliminate errors between desired and actual outputs.Simulation results show that the DC voltage can keep a good stability as its grid voltage amplitude and phase change and follow the active and reactive power's reference trajectories to make a rapid power response.The system has strong anti-interference ability and good robustness.关键词
单相PWM整流器/微分平坦理论/直接功率控制/前馈控制/非线性误差反馈补偿Key words
single-phase PWM rectifier/differential flatness theory/direct power control/feed-forward control/nonlinear error feedback compensation引用本文复制引用
宋平岗,朱维昌,戈旺..基于微分平坦理论的单相PWM整流器直接功率控制[J].电力系统保护与控制,2017,45(5):38-44,7.
