KARAKTERISTIK POMPA SENTRIFUGAL ALIRAN CAMPUR DENGAN VARIABLE FREQUENCY DRIVE

An Improved Variable-Frequency Drive based on Current Tracking

Variable frequency devices are widely used in many power systems. A current tracking based VFD is proposed in this paper. The output current is firstly fed back and compared with a standard sine wave, the difference of them is then used for a PI regulator to control the PWM signal, so as to change the output current accordingly to make it approach the standard sine wave. Simulation and experime...

Euler-karakteristik for fusionskategorier

Harmonic Mitigation in Variable Frequency Drives: 6-Pulse Drive with MTE Matrix AP Harmonic Filter vs. 18-Pulse Drive

The proliferation of variable frequency drives (VFDs) has brought increased attention to harmonic effects created by drives. A standard 6-pulse drive without any harmonic mitigation technology may interfere with neighboring equipment, reduce equipment life, and negatively impact the utility power quality. Under some circumstances the total harmonic current distortion (THID) may approach the lev...

Computational Modelling for Solid-State Variable-Frequency Induction Motor Drive - II

This contribution describes a computational model of the solid-state variable-frequency induction motor drive. The model of the induction motor has been represented as a system of differential equations for flux linkages and angular velocity. These equations have been represented in Cartesian coordinate system, the use of which decreased their number to 7 instead of 10 equations and restricted ...

Harmonic Measurement and Analysis of Variable Frequency Drive (vfd) in Industry

Utility of non-linear load leads to generation of harmonics in industry which is affecting the power quality as well as performance of devices like motors and controllers etc. Harmonic Measurement and analysis to obtain the harmonic content of current and voltage has become vital task in context with increasing power quality. This paper discusses the effect of harmonics on power system and the ...