| Prediction control of active power filters |
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| 引用本文： | WANG,Li-na(王莉娜),LUO,An(罗安). Prediction control of active power filters[J]. 中南工业大学学报(英文版), 2003, 10(3): 260-264. DOI: 10.1007/s11771-003-0020-z |
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| 作者姓名： | WANG Li-na(王莉娜) LUO An(罗安) |
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| 作者单位： | School of Information Science and Engineering，Central South University，Changsha 410083，China，School of Information Science and Engineering，Central South University，Changsha 410083，China |
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| 基金项目： | Project(2498) supported by State Plan Committee Automation Hi-tech Special Project Foundation |
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| 摘 要： | A prediction method to obtain harmonic reference for active power filter is presented. It is a new use of the adaptive predictive filter based on FIR. The delay inherent in digital controller is successfully compensated by u-sing the proposed method, and the computing load is not very large compared with the conventional method. Moreover, no additional hardware is needed. Its DSP-based realization is also presented, which is characterized by time-variant rate sampling, quasi synchronous sampling, and synchronous operation among the line frequency, PWM generating and sampling in A/D unit. Synchronous operation releases the limitation on PWM modulation ratio and guarantees that the electrical noises resulting from the switching operation of IGBTs do not interfere with the sampled current. The simulation and experimental results verify the satisfactory performance of the proposed method.
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| 收稿时间： | 2002-11-20 |
| 修稿时间： | 2003-02-12 |
Prediction control of active power filters |
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| Wang Li-na and Luo An. Prediction control of active power filters[J]. Journal of Central South University of Technology, 2003, 10(3): 260-264. DOI: 10.1007/s11771-003-0020-z |
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| Authors: | Wang Li-na and Luo An |
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| Affiliation: | (1) School of Information Science and Engineering, Central South University, 410083 Changsha, China |
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| Abstract: | A prediction method to obtain harmonic reference for active power filter is presented. It is a new use of the adaptive predictive filter based on FIR. The delay inherent in digital controller is successfully compensated by u-sing the proposed method, and the computing load is not very large compared with the conventional method. Moreover, no additional hardware is needed. Its DSP-based realization is also presented, which is characterized by time-variant rate sampling, quasi synchronous sampling, and synchronous operation among the line frequency, PWM generating and sampling in A/D unit. Synchronous operation releases the limitation on PWM modulation ratio and guarantees that the electrical noises resulting from the switching operation of IGBTs do not interfere with the sampled current. The simulation and experimental results verify the satisfactory performance of the proposed method. |
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| Keywords: | active filter prediction method time-variant rate sampling quasi synchronous sampling |
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