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There has already been significant work done to aid in the understanding and quantification of the effects of harmonic emissions from controlled and uncontrolled rectifiers, as well as pulse width modulated (PWM) rectifiers, in electrical networks. Models of each type of rectifier have been developed specifically for power system harmonic studies in order to accurately evaluate voltage and current distortion levels and assess potential side effects in electricity supply networks. Mitigation equipment has been extensively developed to counteract the negative effects of harmonics. Effective mitigation is heavily reliant on the accuracy of harmonic studies and the same of existing rectifier models that are incorporated in the harmonic studies. Though the work introduced in rectifier modelling for the purpose of harmonic analysis may appear to be sufficient, the majority of modelling effort for each type of rectifier has been expended while the rectifier of concern is isolated assuming no
Romanian headphone brand Meze Audio has revealed its new deluxe Empyrean II planar magnetic headphones with a stunning art deco design and luxury finish.