http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Harmonics Elimination in a Multilevel Inverter with Unequal DC Sources Using a Genetic Algorithm
Iranaq, Ali Reza Marami,Kouhshahi, Mojtaba Bahrami,Kouhshahi, Mehdi Bahrami,Sharifian, Mohammad Bagher Bannae,Sabahi, Mehran Journal of International Conference on Electrical 2012 Journal of international Conference on Electrical Vol.1 No.1
In this paper, an optimal solution to the harmonic reduction problem in a cascaded multilevel inverter with non-equal DC sources using a genetic algorithm (GA) is presented. Switching angles are generated for different values of modulation index by the proposed algorithm, considering minimum voltage total harmonic distortion (THD) whereas selected harmonics are controlled within the allowable limits at all desired modulation indices including the point of discontinuity. Results are stored as a look-up table to be used to control the inverter for a certain operating point. The computed angles are used in a simulated circuit in Matlab\Simulink to validate the results.
Fekari, Seyyed Amir,Iranaq, Ali Reza Marami,Sabahi, Mehran Journal of International Conference on Electrical 2014 Journal of international Conference on Electrical Vol.3 No.3
In this paper, a new switching pattern is presented for multilevel inverters. With changing off-angel of each switch, the on time interval of all switches will approximately be equal and then the lifetime of inverter will increase, also using this method can reduce electrical stress on switches in higher levels of inverter. Switching angels as for desired modulation index are calculated using genetic algorithm whereas selective harmonics are controlled within the allowable range. The computed angels are simulated in Matlab/Simulink for respective circuits to validate the results.