NDLI: Intensive random carrier pulse width modulation for induction motor drives based on hopping between discrete carrier frequencies

Content Provider	IET Digital Library
Author	S., Sivarani T. S., Joseph Jawhar C., Agees Kumar
Abstract	The existing random carrier pulse-width modulation (RCPWM) schemes result in poor non-deterministic characteristics. They basically use a single-frequency triangular carrier and its inverted version to synthesise the random carrier by a pseudo-random binary sequence (PRBS) bit selector. Even though the bits are highly random in nature with large pattern repetition rate, the resulting random carrier does not possess required level of randomness. Rather it can make slight positional variation in the resulting PWM pulses. Moreover, the harmonic spreading effects of these randomness may not be sufficient to meet the expectations of modern drives. Hence, this study proposes a multiple carriers based RCPWM (MCBRCPWM) scheme for the voltage-source inverter fed induction motor drive to enhance the harmonic power spreading ability of the modulator. The proposed MCBRCPWM scheme utilises the non-deterministic characteristics of both the PRBS and hopping action between the MCs involved. The simulation results using MATLAB 7.1.0 (2010a)-Simulink software and the experimental results with hardware implemented using XC6SLX45 field programmable gate array for a 3Ø squirrel cage induction motor load prove the excellent harmonic spectra spreading capability of the proposed scheme as compared with existing non-deterministic methods.
Starting Page	417
Ending Page	426
Page Count	10
ISSN	17554535
Volume Number	9
e-ISSN	17554543
Issue Number	Issue 3, Mar (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/9/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2015.0477
Journal	IET Power Electronics
Publisher Date	2016-03-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	3 Squirrel Cage Induction Motor Load Asynchronous Machine Binary Sequences Discrete Carrier Frequency Drive Field Programmable Gate Array Harmonic Power Spreading Ability Enhancement Harmonic Spreading Effect Induction Motor Drive Intensive Random Carrier Pulse Width Modulation MCBRCPWM Scheme Multiple Carrier Based RCPWM Scheme Pattern Repetition Rate PRBS Bit Selector Pseudorandom Binary Sequence Bit Selector PWM Invertors Random Sequence Single-frequency Triangular Carrier Squirrel Cage Motors Voltage Source Inverter Fed Induction Motor Drive XC6SLX45 Field Programmable Gate Array
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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