scholarly journals Optimal Second-Harmonic Current Injection for Capacitor Voltage Fluctuation Reduction in Hybrid MMCs Under Grid-side SLG Faults

2021 ◽  
pp. 1-1
Author(s):  
Jianzhong Xu ◽  
Weicheng Deng ◽  
Gen Li ◽  
Chengyong Zhao ◽  
Chongru Liu
Keyword(s):  
Second Harmonic ◽  
Current Injection ◽  
Voltage Fluctuation ◽  
Harmonic Current ◽  
Capacitor Voltage ◽  
Grid Side

scholarly journals The gearless, grid-connected, 6-phase asymmetric wind turbine generator system

2015 ◽  
Vol 64 (3) ◽  
pp. 391-403
Author(s):  
Lesław Gołębiowski ◽  
Marek Gołębiowski ◽  
Damian Mazur ◽  
Matthias Humer
Keyword(s):  
Wind Turbine ◽  
Current Injection ◽  
Turbine Generator ◽  
Harmonic Current ◽  
Generator System ◽  
Wind Turbine Generator ◽  
Pair Number ◽  
Grid Side ◽  
Wind Turbine Generator System ◽  
Generator Performance

Abstract In this paper a system of a grid side and a generator side converters, both working with a common capacitor, is presented. The 6-phase asymmetric inset-type SMPMSM generator is used. A large pole pair number of this generator enables a gearless wind turbine operation. The fundamental and 3rd harmonic cooperation is used to increase the generator performance. This is accomplished by means of the 3rd harmonic current injection. For that reason the generator side converter must have a neutral connection.

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