Analogy between PWM and Controlled Rectifier

Authors(2) :-Somasundaram S M, Vivek N

AC/DC converters are widely employed to get regulated power supply, battery charging and DC motor speed control. SCR converters are preferred in the field of high-voltage DC energy transmission(HVDC), superconductor magnetic energy storage,etc. However, these converters have low power factor and also result in harmonic pollution. The first option is to use input LC passive filters. Other possibilities include the use of pulse width modulation (PWM) type converters.The advantage of PWM over other methods is that it does not require bulky and costly LC components. When PWM is employed, SCR’s are not preferred as switching elements, since additional commutation circuits are required; instead ,power Mosfets, Power transistors and insulated gate bipolar transistors (IGBTs) are often used. The number of harmonics eliminated with these techniques is linked to the number of switching angles. In comparison with the phase controlled rectifier ,it can be controlled to consume nearly sinusoidal current with power factor equal to unity.Another advantage is its capability of energy recuperation .

Authors and Affiliations

Somasundaram S M
Electronics and Instrumentation Engineering Department, National Engineering College, kovilpatti, Tamil Nadu, India
Vivek N
Electronics and Instrumentation Engineering Department, National Engineering College, kovilpatti, Tamil Nadu, India

PWM Rectifier, Thyristor rectifier, THD, Power Factor.

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Publication Details

Published in : Volume 4 | Issue 1 | January-February 2018
Date of Publication : 2018-02-28
License:  This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 712-716
Manuscript Number : IJSRSET1841196
Publisher : Technoscience Academy

Print ISSN : 2395-1990, Online ISSN : 2394-4099

Cite This Article :

Somasundaram S M, Vivek N, " Analogy between PWM and Controlled Rectifier, International Journal of Scientific Research in Science, Engineering and Technology(IJSRSET), Print ISSN : 2395-1990, Online ISSN : 2394-4099, Volume 4, Issue 1, pp.712-716, January-February-2018.
Journal URL : http://ijsrset.com/IJSRSET1841196

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