Impact of Variable
Frequency Drives on Electrical System
1Vishal
S Sheth, 2Dabhoiwala
Aliasgar
1Department
of Electrical Engineering
A. D Patel Institute of Technology, Anand,
India.
2Department
of Electrical Engineering
Charotar
University of Science & Technology, Changa, Gujarat, India
Abstract
This paper present the impacts of
power quality issues namely harmonic distortion, transient in electrical system due to Variable Frequency
Drives (VFD) known as Power Drive system (PDS) and its elimination techniques
is investigated both side at the Point
of Common Coupling (PCC) and input side of motor. The Harmonic measurements of electrical
supply system and motor drive are done, with the help of Matlab software to
determine whether a significant amount of harmonic in currents or voltages is
presented. From these measurements and analysis, the
impact of harmonics
is analyzed and
found that the
harmonic content of electrical
power system & motor drives to be
minimized by suitable strategies like Multi pulse converter or Active front end
converter, within the limits
of international harmonic
standards like IEEE 519 and IEC. In
recently, multi pulse and multilevel drive
solution gained an increased
attention due to
their effective harmonic
elimination which is implemented in Matlab/Simulink. Sinusoidal Pulse
width modulation (SPWM) and Space Vector Pulse Width Modulation (SVPWM)
techniques are used to generate switching sequence for the multilevel inverter
and a detailed harmonic study has been carried out.
Keywords— Variable Frequency Drives (VFD); Pulse
Width Modulation (PWM); Sinusoidal pulse width modulation (SPWM); Space vector
pulse width modulation (SVPWM); Induction Motor (IM); Point of common coupling
(PCC); Power Drive System (PDS).
Vishal S Sheth, Dabhoiwala Aliasgar
International Journal of Advances in Engineering & Technology (IJAET), Volume 10 Issue 2, pp. 243-254, April 2017. available online at : http://www.ijaet.org/media/12I38-IJAET1002229-v10-i2-pp243-254.pdf
