A Hybrid Active Filter Based on Current Detection for Harmonic Suppression

Author(s):  
Liu Yunjing ◽  
Wang Fengwen

Author(s):  
Abdelfettah Boussaid ◽  
Mohamed Amine Moussa ◽  
Ahmed Lokmane Nemmour ◽  
Abdelmalek Khezzar


2014 ◽  
Vol 977 ◽  
pp. 391-394
Author(s):  
Si Qi Lv

The key equipment of Light HVDC Technology is the converter and the filter. The main function of the converter is AC / DC conversion, which plays a vital role in converter station. The filter is also an important tool for harmonic suppression. Therefore, in this paper, the HVDC converter and the harmonic suppression are studied. Our paper discussed the advanced converter VSC which is currently being put into operation, its key technology--the MMC topology and the connection mode of VSC. Meanwhile, the production, effect and suppression of the harmonic are analyzed. Compared active power filter to the passive filter, finally, we chose the active filter as the research object. Successful experience of the HVDC Light project which has been put into operation or will be put into use showed that, the technology is in great progress and will be widely used.



2012 ◽  
Vol 30 ◽  
pp. 686-693 ◽  
Author(s):  
R. Zahira ◽  
A. Peer Fathima


2014 ◽  
Vol 599-601 ◽  
pp. 1785-1788
Author(s):  
Yun Jing Liu ◽  
Xiong Wei Zhang

With the development of modern industry, more and more semiconductor-based devices have been used widely. Such equipment presents nonlinear impedance to the utility, generating large harmonic currents with well known adverse effects, such as low power factor, low efficiency and destruction of other equipment. Also, some precision instruments and communication equipment will be interfered. Therefore, utility power quality has become an important issue recently. This paper presents a hybrid active filter including two functions: current harmonic detection and reactive power compensation. The current harmonic detection is based on. The reactive power compensation utilizes the measured voltage and the estimated fundamental current to calculate reactive power. After the above information has been calculated, the corrective current reference signals can be generated for the active filter. In this way, the two control functions are integrated together so that one active filter can accomplish two functions simultaneously. The system is modeled in MATLAB SIMULINK to consist of the non-linear loads, with a hybrid active filter to compensate for the harmonic current and reactive power. The simulation results show that the proposed hybrid active power filter has the expected performance.



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