| 基于PWM整流器模型的三相系统全数字锁相环 |
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| 引用本文： | 史旺旺,刘超. 基于PWM整流器模型的三相系统全数字锁相环[J]. 电源技术, 2011, 35(6) |
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| 作者姓名： | 史旺旺 刘超 |
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| 作者单位： | 扬州大学能源与动力工程学院;扬州大学江苏省水利动力工程重点实验室; |
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| 摘 要： | 提出了基于三相PWM整流器的数字锁相环模型,该模型结构简单、物理意义明确。因模型中含有频率参数,同时考虑到电力系统的频率变化,利用Lyapunov函数设计了自适应镇定控制器,在锁相过程的同时,给出系统频率自适应率。因而本模型具有较宽的频率、相位跟踪范围和相位的快速响应等特点。仿真结果验证了本方案的有效性。
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| 关 键 词： | 数字锁相环 PWM整流器 Lyapunov函数 自适应 |
A digital phase-locked loop for three phase system based on PWM rectifier model |
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| SHI Wang-wang,LIU Chao. A digital phase-locked loop for three phase system based on PWM rectifier model[J]. Chinese Journal of Power Sources, 2011, 35(6) |
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| Authors: | SHI Wang-wang LIU Chao |
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| Affiliation: | SHI Wang-wang1,LIU Chao2(1.Energy and Power Engineering,College of Yangzhou University,Yangzhou Jiangsu,225009,China,2.Hydrodynamic Engineering Laboratory of Jiangsu Province,Yangzhou University,China) |
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| Abstract: | The digital phase-locked loop(DPLL) for three phase system based on PWM rectifier model was proposed with simple structure and clear physical concept.Considering the frequency variation in power system,which was included in the model,the control was implemented by adaptive design with Lyapunov function.So,the model could track frequency and phase rapidly.The simulation results validate the theoretical analysis. |
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| Keywords: | digital phase-locked loop PWM rectifier Lyapunov function adaptation |
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