| PWM整流器负载电流前馈控制策略研究 |
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| 引用本文： | 李剑林,田联房,王孝洪,汪安国.PWM整流器负载电流前馈控制策略研究[J].电力电子技术,2011,45(11):58-60. |
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| 作者姓名： | 李剑林 田联房 王孝洪 汪安国 |
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| 作者单位： | 1. 华南理工大学;自动化科学与工程学院,广东广州510640
2. 日立电梯(中国)有限公司,广东广州,511430 |
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| 基金项目： | 广东省高等学校学科与专业建设专项资金，广东省重大科技专项 |
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| 摘 要： | 双闭环PI控制因其在控制系统结构上固有的不足及PI调节的滞后性,难以使PWM整流器在负载扰动下获得良好的动态性能.结合PWM整流器在两相同步旋转坐标系下的数学模型,给出了双闭环PI控制系统结构图,设计了负载扰动动态前馈补偿器及简化后的静态前馈补偿器.实验结果表明,静态前馈补偿可显著改善PWM整流器抗负载扰动动态性能.分...
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| 关 键 词： | 整流器 负载扰动 前馈补偿 动态性能 |
Study on Load Current Feedforward Control Strategy for PWM Rectifier |
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| LI Jian-lin,TIAN Lian-fang,WANG Xiao-hong,WANG An-guo.Study on Load Current Feedforward Control Strategy for PWM Rectifier[J].Power Electronics,2011,45(11):58-60. |
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| Authors: | LI Jian-lin TIAN Lian-fang WANG Xiao-hong WANG An-guo |
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| Affiliation: | 1.South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | Dual-closed loop PI control can hardly let PWM rectifier obtain good dynamic performance under load vari-ation,due to its inherent demerit in control structure and the lag of PI regulation.The dual-closed loop PI control sys-tem block diagram is constructed based on the mathematical model of PWM rectifier on two-phase synchronous rotat-ing reference frame.The dynamic feedforward compensator and the corresponding simplified static feedforward com-pensator for load variation are designed.The experimental results indicate that the static feedforward compensation can improve the anti-disturbance dynamic performance of PWM rectifier notably.The factor that affects the performance of static feedforward compensation is analyzed and the methods to further improve the anti-disturbance dynamic perfor-mance of PWM rectifier are proposed. |
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| Keywords: | rectifier load variation feedforward compensation dynamic performance |
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