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BEI Taizhou,WANG Ping,ZHANG Bowen.Performance Comparison Between Quadrature Signal Generators in Single-phase αβ PLL Schemes[J].JOURNAL OF POWER SUPPLY,2018,16(3):91-98,112
Performance Comparison Between Quadrature Signal Generators in Single-phase αβ PLL Schemes
Received:November 27, 2016  Revised:January 14, 2018
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DOI:10.13234/j.issn.2095-2805.2018.3.91
Keywords:grid synchronization  quadrature signal generator (QSG)  second-order generalized integrator (SOGI)  har-monics
Fund Project:Ph.D. Programs Foundation of the Ministry of Education of China
        
AuthorInstitutionEmail
BEI Taizhou School of Electrical and Information Engineering, Tianjin University, Tianjin , China;State Grid Ji'nan Power Supply Company, Ji'nan , China
WANG Ping School of Electrical and Information Engineering, Tianjin University, Tianjin , China pingw@tju.edu.cn
ZHANG Bowen School of Electrical and Information Engineering, Tianjin University, Tianjin , China
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Abstract:
      PLL schemes are widely applied in the technology of grid synchronization. For the purpose of effectively reducing the computation load due to coordinate transformation when using the conventional dq PLL schemes, many αβ PLL schemes have been presented successively. Considering that quadrature signal generator(QSG) is usually adopted to generate voltage components of αβ coordinates in single-phase applications, the working performance of QSG will directly affect the accuracy of PLL outputs. In this paper, the performances of several current QSGs are compared from the aspects of harmonics rejection and DC elimination in detail, which are also verified through simulation results.
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