非对称负载下矩阵变换器改进型 PI 重复控制
针对非对称负载下矩阵变换器（ MC）重复控制与PI控制的不足，提出改进的复合控制策略，有效改善输出电压质量。通过建立d-q坐标系下的MC数学模型，分析系统稳定性条件与扰动抑制特性，设计控制器；因重复控制器的内模包含一个延迟环节，信号调节显著滞后。在分析Park变换前后谐波分布特点基础上，采用双序Park变换，将相坐标系下的谐波变换为d-q坐标系下的3倍次谐波，进而改进内模，减少控制系统调节时间，同时可保证谐波抑制性能。仿真结果表明，所提控制方案具有良好的扰动抑制特性和快速的调节能力，可有效解决三相输出电压不平衡问题。...
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| Published in | 电测与仪表 Vol. 52; no. 4; pp. 54 - 59 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
广东工业大学自动化学院,广州,510006%华南理工大学电力学院,广州,510641
2015
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-1390 |
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| Abstract | 针对非对称负载下矩阵变换器（ MC）重复控制与PI控制的不足，提出改进的复合控制策略，有效改善输出电压质量。通过建立d-q坐标系下的MC数学模型，分析系统稳定性条件与扰动抑制特性，设计控制器；因重复控制器的内模包含一个延迟环节，信号调节显著滞后。在分析Park变换前后谐波分布特点基础上，采用双序Park变换，将相坐标系下的谐波变换为d-q坐标系下的3倍次谐波，进而改进内模，减少控制系统调节时间，同时可保证谐波抑制性能。仿真结果表明，所提控制方案具有良好的扰动抑制特性和快速的调节能力，可有效解决三相输出电压不平衡问题。 |
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| AbstractList | TM46; 针对非对称负载下矩阵变换器（ MC）重复控制与PI控制的不足，提出改进的复合控制策略，有效改善输出电压质量。通过建立d-q坐标系下的MC数学模型，分析系统稳定性条件与扰动抑制特性，设计控制器；因重复控制器的内模包含一个延迟环节，信号调节显著滞后。在分析Park变换前后谐波分布特点基础上，采用双序Park变换，将相坐标系下的谐波变换为d-q坐标系下的3倍次谐波，进而改进内模，减少控制系统调节时间，同时可保证谐波抑制性能。仿真结果表明，所提控制方案具有良好的扰动抑制特性和快速的调节能力，可有效解决三相输出电压不平衡问题。 针对非对称负载下矩阵变换器（ MC）重复控制与PI控制的不足，提出改进的复合控制策略，有效改善输出电压质量。通过建立d-q坐标系下的MC数学模型，分析系统稳定性条件与扰动抑制特性，设计控制器；因重复控制器的内模包含一个延迟环节，信号调节显著滞后。在分析Park变换前后谐波分布特点基础上，采用双序Park变换，将相坐标系下的谐波变换为d-q坐标系下的3倍次谐波，进而改进内模，减少控制系统调节时间，同时可保证谐波抑制性能。仿真结果表明，所提控制方案具有良好的扰动抑制特性和快速的调节能力，可有效解决三相输出电压不平衡问题。 |
| Abstract_FL | In order to solve the control problems of matrix converter(MC) in unsymmetrical load with PI control or re-petitive control ( RC) strategy, a combined scheme of PI and RC method was proposed, with which the quality of out-put voltage could be effectively promoted.The compound controller was designed by establishing the mathematical model of MC in d-q coordinates, and analyzing the stability conditions as well as the characteristics of disturbance at-tenuation of MC system.As a delay link was included in the internal model of the repetitive controller, an obvious lag existed in signal regulation process.Based on analyzing the harmonic distribution features around park transformation, the harmonics in phase coordinate system was converted to 3 times harmonics in d-q coordinates by park transformation in double sequences.The internal model was improved, and the settling time of the compound controller could be re-duced without affecting the performance of harmonic suppression.The simulation results indicate that the improved compound controller has a good property in the regulation capability and the disturbance suppression, the unbalanced problem of three-phase output voltage could be effectively resolved. |
| Author | 陈林 杨俊华 陈思哲 吴捷 |
| AuthorAffiliation | 广东工业大学自动化学院,广州510006 华南理工大学电力学院,广州510641 |
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| Author_FL | Chen Lin Yang Junhua Wu Jie Chen Sizhe |
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| DocumentTitleAlternate | Research on matrix converter in unsymmetrical load with improved repetitive PI control strategy |
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| Keywords | unsymmetrical load repetitive control 非对称负载 PI matrix converter 矩阵变换器 重复控制 Park变换 park transformation |
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| Notes | matrix converter, PI, repetitive control, unsymmetrical load, park transformation 23-1202/TH In order to solve the control problems of matrix converter（MC） in unsymmetrical load with PI control or re-petitive control （ RC） strategy, a combined scheme of PI and RC method was proposed, with which the quality of out-put voltage could be effectively promoted.The compound controller was designed by establishing the mathematical model of MC in d-q coordinates, and analyzing the stability conditions as well as the characteristics of disturbance at-tenuation of MC system.As a delay link was included in the internal model of the repetitive controller, an obvious lag existed in signal regulation process.Based on analyzing the harmonic distribution features around park transformation, the harmonics in phase coordinate system was converted to 3 times harmonics in d-q coordinates by park transformation in double sequences.The internal model was improved, and the settling time of the compound controller could be re-duced wit |
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| PublicationTitle | 电测与仪表 |
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| PublicationYear | 2015 |
| Publisher | 广东工业大学自动化学院,广州,510006%华南理工大学电力学院,广州,510641 |
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| SubjectTerms | Park变换 PI 矩阵变换器 重复控制 非对称负载 |
| Title | 非对称负载下矩阵变换器改进型 PI 重复控制 |
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