Pulse width modulation (PWM) converters are frequently used due to unity power factor operation with reduced total harmonic distortion (THD) at ac mains and also provide constant-regulated dc output voltage even under fluctuations of ac voltage and dc load. This paper contains the harmonics analysis of sinusoidal PWM (SPWM) technique and space vector PWM (SVPWM) technique for three-phase AC to ...

A robust controller for a single-phase Pulse-Width Modulation (PWM) inverter is designed. The single-phase PWM inverter generates an AC sinusoidal output from a DC link voltage. Robustness of the output waveform against load variations and minimum Total Harmonic Distortion (THD) are the main goals in this design. The importance of this design methodology results from the changes in the inverter...

This paper shows the method of improving the power quality using shunt active power filter. The proposedtopic comprises of PI controller, filter hysteresis current control loop, dc link capacitor. The switching signal generation for filter is fromhysteresis current controller techniques. With the all these element shunt active power filter reduce the total harmonic distortion. Thispaper represe...

We analyze and present an input gain-varying scheme for maximizing dynamic range in a well-known Gm–C bandpass filter by both minimizing noise for small input signals, and by achieving balanced swing levels at all filter nodes for large input signals. A micropower bandpass filter suitable for use in cochlear implants and other powerconstrained biomedical applications was implemented and tested ...

This paper introduces a methodology to forecast voltage total harmonic distortion (THD) at low busbars of residential distribution feeders based on the data provided by limited number smart meters. The provides relevant power quality indices system operators using only existing monitoring infrastructure required for demand response operation. Different algorithms THD forecasting are implemented...

This paper presents a technique allowing the test of ADC harmonic distortions with only low-cost ATE. Contrary to a classical DSP-based test that requires an arbitrary wave generator (AWG) on the ATE with a resolution at least 2 bit higher than the ADC under test, the proposed solution permits to test ADCs using same resolution AWG. The method involves an initial learning phase in which the cha...

This paper proposes a novel modulation scheme to reduce the harmonic content of voltages and currents caused by modular multilevel converters with embedded battery cell when employed for application in energy storage systems grid. The reduction total distortion (THD) is obtained injecting selected harmonics modulating wave phase disposition sinusoidal pulse width modulation. main innovation fre...

Abstract Based on the distributed battery energy storage system (BESS), a grid-connection strategy considering harmonic restraint is investigated. It can compensate current to grid by measuring harmonics, then compensation implemented reduce total distortion (THD) of current. In this paper, method harmonics in and control principle providing power supply based BESS are described. On basis, flow...