this paper presents a novel control approach used in shunt active power filter based on variable structure control combined with random pwm technique (rvsc) that provides robust, fast, and more favorable performance for active power filter. this control strategy is compared with two other strategies to show the effectiveness of the introduced methods; pulse width modulated proportional-integral...

The nominal directivity for uniformly spaced broadside parallel half-wave dipoles associated with a uniform excitation is evaluated. The amplitude distribution for an optimized directivity is then obtained for different numbers of elements with the separations between the dipoles as a variable. The optimum and nominal directivities are compared for different spacings of the elements. While thes...

This paper presents a novel approach for simultaneous power generation and harmonic current mitigation using variable speed WECS with DFIG. A new control strategy is proposed to upgrade the DFIG control to achieve simultaneously a green active and reactive power source with active filtering capability. To ensure high filtering performance, we studied an improved harmonic isolator in the timedom...

 The resonance between power-factor-correction capacitors and the line reactance is a common cause for harmonic problems in traditional power systems. Grid-connected inverters integrating renewable energy sources into the grid exhibit capacitive output impedance at harmonic frequencies and may also resonate with the grid impedance. In addition to possible amplification of current and voltage ...

Multilevel inverter technology has emerged recently as a very important alternative in the area of high-power mediumvoltage energy control. Using multilevel inverters application in fuel cell, solar cell & wind turbines is increasing now a day‘s rapidly. Therefore, Harmonic reduction techniques in multilevel inverters are considered very important task Over the past decades, depending upon the ...

To suppress the coupling among patch antenna arrays and reduce out-of-band spurious, a feeding-decoupling network with harmonic suppression is proposed. The decoupling method achieved by generating two paths between feeding of an radiating adjacent antenna, through slotline-based lowpass filter miniaturized coupled line coupler. Despite no operation non-adjacent elements, them also reduced. are...

Harmonic model predictive control (HMPC) is a (MPC) formulation that displays several benefits over other MPC formulations, especially when using small prediction horizon. These benefits, however, come at the expense of an optimization problem no longer typical quadratic programming derived from most linear formulations due to inclusion particular class second-order cone constraints. This artic...