Limitations of Harmonics Control in Power Converters

Abstract

In this paper, we analyze the constraints of harmonics control in power electronic systems. Based on an equivalent circuit of a typical power converter application and its parameters, we have derived an analytical expression for calculating the maximal amplitude of controlled harmonic current. This expression has been successfully verified on an experimental setup, designed around a single-phase grid-connected bidirectional inverter. The pulse width modulated (PWM) driven inverter has been controlled by multiple resonant controllers, each of them providing individual control of a selected harmonic current. By using the derived expression and taking into account the parameters of converter application, power electronics designers could quickly determine the limitations of harmonics control.

Distributed Generation: A Review on Current Energy Status, Grid-Interconnected PQ Issues, and Implementation Constraints of DG in Malaysia

“…Electrical harmonics waveform is a period of wave consisting of a fundamental frequency of either voltage or current, which results in the production of a waveform distortion under repetitive waveforms under multiple frequencies [91]. By applying the Fourier series analysis, a mathematical representation of the harmonic sequence is shown in (1) [92]:…”

Method for the Analysis of Three-Phase Networks Containing Nonlinear Circuit Elements in View of an Efficient Power Flow Computation

“…Nonlinear circuit elements are an important source of harmonics in three-phase networks. Harmonics affect power quality and generate additional losses and overloads, may inflict operation malfunction, and finally significantly decrease the equipment's life cycle or even cause its failure [1][2][3][4][5][6][7][8][9]. The current trend, both in the European Union and worldwide, is to reduce costs and increase the energy efficiency of both industrial and household equipment through the widespread use of power electronics [10][11][12][13].…”