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In recent years, Fuel Cells (FC) have gained interest as energy source for stand-alone and grid connected applications, because they are very high-efficiency and multi-fuel power generators that require neither the burning of conventional fuels nor the mechanical equipment of conventional power generators. When FC are used with inverters for supplying AC loads, harmonic distortion in the supply voltage...
Separation of contribution from supply side and customer side in generation of harmonics in power system is an important problem to be addressed. This paper presents a method to estimate the harmonics present in the supply side by making a few measurements at the point of common coupling. The method involves determination of network harmonic impedance by a noninvasive procedure. The normal operation...
A new optimization technique for the design of wideband high-gain harmonic self oscillating mixers is presented. The method combines the use of non-linear optimization tools and bifurcation detection and control techniques. High conversion gain is obtained through operation near to Hopf bifurcation points. The technique has been applied to the design of an 11.25-1.5 GHz harmonic self oscillating mixer,...
A new optimization method is presented for the design of wide-band harmonic self-oscillating mixers (HSOMs). High conversion gain is obtained through near-bifurcation operation and optimization of the harmonic content of the self-oscillation. Bifurcation analysis- and control-techniques are used in combination with nonlinear optimization techniques based on the use of an auxiliary generator. An 11...
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