ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

A VARIABLE SWITCHING FREQUENCY PWM TECHNIQUE FOR INVERTER-FED INDUCTION MOTOR TO ACHIEVE SPREAD SPECTRUM

Kumar, Binoj AC and Narayanan, G (2010) A VARIABLE SWITCHING FREQUENCY PWM TECHNIQUE FOR INVERTER-FED INDUCTION MOTOR TO ACHIEVE SPREAD SPECTRUM. In: National Power Electronics Conference (NPEC) 2010, 11-13 June 2010, IIT Roorkee, Roorkee, Uttarakhand, India.

[img]
Preview
PDF
Binoj_NPEC_2010.pdf - Published Version

Download (347kB) | Preview

Abstract

Voltage Source Inverter (VSI) fed induction motors are widely used in variable speed applications. For inverters using fixed switching frequency PWM, the output harmonic spectra are located at a few discrete frequencies. The ac motordrives powered by these inverters cause acoustic noise. This paper proposes a new variable switching frequency pwm technique and compares its performance with constant switching frequency pwm technique. It is shown that the proposed technique leads to spread spectra of voltages and currents. Also this technique ensures that no lower order harmonics are present and the current THD is comparable to that of fixed switching frequency PWM and is even better for higher modulation indices.

Item Type: Conference Paper
Additional Information: Copyright for this article belongs to the IIT Roorkee
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Depositing User: Binojkumar A.C.
Date Deposited: 12 Jul 2014 14:53
Last Modified: 12 Jul 2014 15:06
URI: http://eprints.iisc.ac.in/id/eprint/49398

Actions (login required)

View Item View Item