NDLI: Non-linear intermittent instabilities and their control in an interleaved DC/DC converter

Content Provider	IET Digital Library
Author	Deivasundari, Parvathyshankar Uma, Govindarajan Vincent, Christy Murali, Krishnamurthy
Abstract	The undesirable intermittent instabilities in periodically driven parallel power converter are caused due to periodic interferences in input voltage. This is a more common problem in power electronic circuit design and such operations are usually avoided by controlling the circuit parameters. In this study, the mechanism and conditions for the emergence of intermittent instabilities and remerging chaotic band attractors (or Feigenbaum sequences) in a master–slave controlled parallel buck converter are investigated. It is found that sinusoidal-type interference in input voltage at frequencies near the switching frequency or its rational multiples of this circuit results typically in period-bubbling, chaos and intermittency. It is also shown that an optimal, phase-shifted sinusoidal interference added to the reference voltage controls the period-bubbling behaviour and significantly extends the parameter range of desirable period-1 operation. The dynamics of this converter has been first investigated with suitable numerical simulations. The ordered and the chaotic dynamics of this system have been further mathematically described and analysed with a simple discrete map and experimental means. Experimental observations are found to be in good agreement with the analytical and simulation results.
Starting Page	1235
Ending Page	1245
Page Count	11
ISSN	17554535
Volume Number	7
e-ISSN	17554543
Issue Number	Issue 5, May (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/7/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2013.0313
Journal	IET Power Electronics
Publisher Date	2014-01-29
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Chaos Control Nonlinearities Control of Electric Power System DC-DC Power Converter Interleaved DC-DC Converter Masterâ€“slave Controlled Parallel Buck Converter Nonlinear Control System Nonlinear Intermittent Instabilities Period-bubbling Behaviour Periodic Interferences Periodically Driven Parallel Power Converter Power Electronic Circuit Design Power Electronics Power Supply Reference Voltage Control Sinusoidal-type Interference Supervisory Circuit Switching Circuit Voltage Control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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