王志强

个人信息Personal Information

副教授

博士生导师

硕士生导师

主要任职:电气工程学院副院长

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:电气工程学院

学科:电工理论与新技术. 电力电子与电力传动

办公地点:大连理工大学A3区32#静电与特种电源研究所204

电子邮箱:wangzq@dlut.edu.cn

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A novel algorithm of fundamental positive sequence voltage detector under unbalanced and distorted voltages

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论文类型:期刊论文

发表时间:2013-01-01

发表刊物:International Journal of Online Engineering

收录刊物:EI、Scopus

卷号:9

期号:3

页面范围:61-66

ISSN号:18681646

摘要:This paper presented a new algorithm for the performance improvement of fundamental positive sequence voltage extraction under unbalanced and distorted conditions. In this algorithm, an improved software phaselocked loop (SPLL) with a second order low-pass filter was proposed and analyzed, completely eliminating the phase detection errors of the unbalanced and distorted source voltages. The paper began with a description of the proposed fundamental positive sequence extraction method, and then a detailed analysis of the designed SPLL was introduced. The proposed algorithm improved the sinusoidal current control strategy of active power filter (APF) which was based on the classical power theories for obtaining an optimal extraction of the fundamental positive sequence current. To verify the feasibility of the algorithm in realtime applications, the simulation model was established in MATLAB-Simulink environment. Then, the algorithm was implemented in DSP using the TMS320F28335 development board. The results indicated that the proposed algorithm is feasible and effective, and it could be directly used in the practical applications.