[Show abstract][Hide abstract] ABSTRACT: Economic benefits from using power electronics equipment are much
more visible than losses caused by harmonics produced by this equipment.
Consequently, we enter the New Millenium with sources of harmonic
distortion more and more distributed over distribution systems. We have
to confess that we are much more effective in generating harmonics than
in their elimination. This situation should not propagate into the Next
Century. A more effective method of harmonic suppression is needed.
Harmonics in distribution systems can be suppressed with reactive
devices, switching compensators and hybrid devices built of reactive
devices and a switching compensator. Selection of a method of harmonic
suppression, best suited to particular conditions, requires that
advantages, disadvantages and limitations of these devices, which
exhibit a very broad range of properties, are well comprehended. The
paper compiles and discusses general properties of various methods of
reducing harmonic distortion. Such methods and devices are compared from
the point of view of their effectiveness and related issues in various
field situations. The paper also investigates some possibilities of new
approach to harmonic suppression. In particular, the concept of a
harmonic blocking compensator and a fixed-pole resonant harmonic filter
Power Engineering Society Summer Meeting, 2000. IEEE; 02/2000
[Show abstract][Hide abstract] ABSTRACT: Resonant harmonic filters (RHFs) are effective devices for reducing supply current harmonics when only those load generated harmonics for which they are tuned are present. Other current harmonics as well as supply voltage harmonics may reduce the effectiveness of RHFs in harmonic suppression. To counter such reductions in effectiveness, an optimization based method for selection of filter branch parameters is developed for the conventional RHF. It takes into consideration the interaction of the filter with the distribution system and provides filter parameters that give the maximum effectiveness with respect to harmonic suppression. To accomplish this, a cost function is developed, its behavior examined, and appropriate constraint functions are developed. The results for optimized filters, applied in a test case, are given.
IEEE Transactions on Power Delivery 08/2006; · 1.52 Impact Factor
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