Zero Sequence Circulating Current Reduction of Paralleled Converters With Interleaved Discontinuous PWM

2019 ◽  
Author(s):  
Hanwei Xu ◽  
Lie Xu ◽  
Kui Wang ◽  
Zedong Zheng ◽  
Yongdong Li
Keyword(s):  
Circulating Current ◽  
Zero Sequence ◽  
Current Reduction

Zero-Sequence Circulating Current Reduction for Three-Phase Three-Level Modular Photovoltaic Grid-Connected System

2013 ◽  
Vol 339 ◽  
pp. 539-544
Author(s):  
Fu Sheng Wang ◽  
Xiao Fei Wang ◽  
Zhang Ping Shao ◽  
Xing Zhang
Keyword(s):  
High Frequency ◽  
Low Frequency ◽  
Frequency Component ◽  
Equivalent Model ◽  
High Frequency Component ◽  
Circulating Current ◽  
Three Phase ◽  
Zero Sequence ◽  
Reduction Methods ◽  
Current Reduction

An equivalent model is established for zero-sequence circulating current (ZSCC) in three-phase three-level modular photovoltaic grid-connected system, and ZSCC is classified by frequency into high-frequency and low-frequency components. A parallel solution based on improved LCL filter is proposed to reduce high frequency component of ZSCC, and the low-frequency component of ZSCC can be reduced by using the ZSCC controller. The ZSCC model analysis and reduction methods are verified by experimental results based on a 10 kW three-phase three-level modular photovoltaic grid-connected system.

Sign in / Sign up

Export Citation Format

Share Document