Title :
Converter nonintegral harmonics from AC network resonating with DC network
Author :
Tang, Lianxiang ; Ooi, Boon-Teck
Author_Institution :
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, Que., Canada
Abstract :
Integral harmonics come from the switching pattern of the modulation method. Nonintegral harmonics, on the other hand, are initiated by random noise that becomes amplified and sustained by the AC network resonating with the DC network. A comprehensive theory of their origins is presented. Its correctness is justified by digital simulations. It is then shown that an efficient method of predicting their potential occurrences is by eigenvalue analysis. The objective of THD compliance can be met by: (i) avoidance by design of network parameters; and (ii) suppression by active filtering. Some directions of parameter design are given. A simulation result is presented showing that an active filtering method is promising.
Keywords :
active filters; circuit resonance; circuit simulation; digital simulation; eigenvalues and eigenfunctions; harmonic distortion; harmonics suppression; power conversion harmonics; power convertors; random noise; AC network; AC network resonating with DC network; DC network; THD compliance; active filtering method; converter nonintegral harmonics; digital simulation; eigenvalue analysis; harmonics suppression; network parameters; parameter design; random noise; Active filters; Analog-digital conversion; Eigenvalues and eigenfunctions; Filtering; Power harmonic filters; Power system harmonics; Pulse width modulation; Pulse width modulation converters; Resonance; Voltage;
Conference_Titel :
Industry Applications Conference, 2001. Thirty-Sixth IAS Annual Meeting. Conference Record of the 2001 IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-7114-3
DOI :
10.1109/IAS.2001.955929
