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A fuzzy system for the elimination of specific low order harmonics in the output voltage of single phase inverters is proposed. The proposed system does not need look up tables which require much memory as in traditional methods and no need for training which takes much time as in neural networks. Here, modulation index is used as input to fuzzy system and switching signals are generated. Predetermined...
In this paper, a real-time circulating current reduction method for parallel harmonic-elimination pulsewidth modulation (HEPWM) inverters is proposed. HEPWM techniques are often used in high-capacity inverters. For instance, in a hybrid microgrid, the inverters are employed to transfer power between the dc and ac buses. If the inverters are in parallel operation, the zero-sequence path can be established,...
Trendy wind based Energy conversion systems identified as Self Excited Induction Generator (SEIG) is an isolated power source, whose terminal voltage and frequency are controlled by varying speed, excitation capacitance or load impedance. Since load changes from time to time, the output parameters mostly are controlled by either speed or by varying excitation capacitance. This paper presents a method...
This paper proposes the application of Differential Evolution (DE) algorithm to the selective harmonics elimination pulse-width modulation (SHE-PWM) scheme. The aim is to solve for the set of transcendental equations that determine the switching angles of the SHE-PWM waveform. The objective function of DE is designed to minimize the selected harmonics to near zero. Furthermore the fundamental component...
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