Title :
Sensorless virtual resistance damping method for grid-connected three-phase PWM converter with LCL filter
Author :
Koiwa, K. ; Rosyadi, M. ; Umemura, Atsushi ; Takahashi, Ryo ; Tamura, Junji
Author_Institution :
Kitami Inst. of Technol., Kitami, Japan
Abstract :
Three-phase PWM converter is commonly connected to utility grid through L or LCL filter to remove grid current harmonic components. LCL filter has many advantages compared with L filter. However, resonance at high frequency caused by the LCL filter may lead stability problem. Passive damping method (PD) or active damping method (AD) is used to solve this problem. PD brings the additional loss due to damping resistor. On the other hand, virtual resistance damping method of AD, in general, needs additional sensor. Therefore, this paper proposes sensorless virtual resistance damping method for grid-connected three-phase PWM converter with LCL filter.
Keywords :
PWM power convertors; damping; power conversion harmonics; power grids; resistors; LCL filter; active damping method; damping resistor; grid current harmonic components; grid-connected three-phase PWM converter; passive damping method; sensorless virtual resistance damping method; stability problem; utility grid; Attenuation; Damping; Phase locked loops; Pulse width modulation;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2013 International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4799-1446-3
DOI :
10.1109/ICEMS.2013.6713280
