this paper presents an innovative active power filter design method to simultaneously compensate the current harmonics and reactive power of a nonlinear load. the power filter integrates a passive power filter which is a rl low-pass filter placed in series with the load, and an active power filter which comprises an rl in series with an igbt based voltage source converter. the filter is assumed...

This paper presents a novel approach for simultaneous power generation and harmonic current mitigation using variable speed WECS with DFIG. A new control strategy is proposed to upgrade the DFIG control to achieve simultaneously a green active and reactive power source with active filtering capability. To ensure high filtering performance, we studied an improved harmonic isolator in the timedom...

This paper describes the implementation of Distributed Active Filters (DAFs). To share the workload of harmonic filtering, several Active Filter Units (AFUs) are placed on different locations which can perform the harmonic filtering without a direct communication. Different configurations of DAFs are described and are implemented using MATLAB /Simpower system Toolbox environment to observe thei...

Standard correlation based methods are not effective in estimating pitch tracks of multiple speech sources from a single-microphone input In this paper, an adaptive harmonic filtering is proposed to jointly estimate the source signals and their corresponding fundamental frequencies. By exploiting the harmonic structure of voiced speech, pitch information of one source is extracted from the pitc...

− This paper describes the principle of harmonic excitation of strain gages in bridge configuration. This system’s properties are mathematically determined and measurements are conducted with commutated excitation, AC and harmonic excitation with and without filtering. The possibility of increasing the accuracy of output bridge voltage measurement by using harmonic excitation is shown.

The paper considers the application of instantaneous harmonic analysis to a real-time vocal processing system for pitch, timbre and time-scale modifications. The analysis technique is based on narrow band filtering using special analysis filters with frequency-modulated impulse response. The main advantage of the technique is high accuracy of harmonic parameters estimation that provides adequat...

Two techniques are presented in this paper for a software-defined radio (SDR) receiver robust to out-of-band interference. Voltage gain is realized at IF simultaneously with low-pass filtering to mitigate blockers and out-of-band intermodulation distortion. A 2-stage polyphase harmonic rejection (HR) mixer concept robust to gain error achieves 2-6 HR of more than 60dB for 40 samples without tri...