Control of a cascade boost converter with a single active switch Conference Paper

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Overview

abstract

• The development of new technologies is requiring wider conversion ratios. A possible solution to this problem is to use n-stages connected in cascade; however, the major drawback is that a more complex control circuitry is required. An alternative solution is to use a cascade boost converter with a single switch. A controller is developed using average current-mode control. It is shown that the transfer function of the first inductor current/duty ratio is a minimum phase transfer function; thus, this current is selected for feedback purposes. For the inner loop, a current gain and a high gain compensator are selected. For the output loop, a conventional PI-controller is used which provides good regulation characteristics. Experimental results are given for a 100 W switching regulator with step changes between full and 40 %25 of load ©2008 IEEE.

authors

• Diaz-Saldierna L.H.
• Morales Saldaña Jorge Alberto
• Ortiz-Lopez M.G.
• Ramos J.L.

publication date

• 2008-01-01

published in

• PESC Record - IEEE Annual Power Electronics Specialists Conference  Journal

Research

keywords

• Chlorine compounds; Electric converters; Functions; Power converters; Power electronics; Technology; Average current-mode control; BOOST converters; Complex control; Conventional PI; Conversion ratios; Current gains; High gain; Minimum phase; New technologies; Single switch; Transfer functions

Identity

Digital Object Identifier (DOI)

• 10.1109/PESC.2008.4592298

Additional Document Info

start page

• 2383

end page

• 2388