Hybrid Active Damping Combining Capacitor Current Feedback and Point of Common Coupling Voltage Feedforward for LCL-Type Grid-Connected Inverter

2021 ◽  
Vol 36 (2) ◽  
pp. 2373-2383
Author(s):  
Yuying He ◽  
Xuehua Wang ◽  
Xinbo Ruan ◽  
Donghua Pan ◽  
Kuang Qin
Keyword(s):  
Active Damping ◽  
Current Feedback ◽  
Point Of Common Coupling ◽  
Common Coupling ◽  
Grid Connected Inverter

DSP - Based Islanding Protection for Photovoltaic Grid Connected Inverter

2013 ◽  
Vol 291-294 ◽  
pp. 2007-2010
Author(s):  
Khanchai Tunlasakun
Keyword(s):  
Digital Signal Processor ◽  
Digital Signal ◽  
Local Load ◽  
Grid Voltage ◽  
National Instrument ◽  
Point Of Common Coupling ◽  
Common Coupling ◽  
Utility Grid ◽  
Grid Connected Inverter ◽  
Signal Processor

This research presents the DSP - based islanding protection for photovoltaic grid connected inverter with under / over frequency and under / over voltage islanding protection methods. The design is based on the TMS320VC33PGE digital signal processor on the NI SPEEDY 33 board from National Instrument Inc. The prototype is monitor the grid frequency and grid voltage at the point of common coupling (PCC) between the photovoltaic grid connected inverter, the local load and the distribution. The results of study, the prototype can turn off relay between photovoltaic grid connected inverter and utility grid when the frequency is change under 48Hz or over 52Hz and the voltage is change under 200V or over 240V.

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