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08-20-2013 09:28 PM

Various Applications of Interleaved Converters

Hi All, I want to do a project based on Interleaved converter topologies (parallel combination of 2 or more sets of the same converters), to highlight how they are more advantageous than conventional converters (at least in some ways). Can you please suggest the various applications of interleaved converters?
08-20-2013 09:29 PM
Top #2
08-20-2013 09:29 PM

+ Interleaving provides partial ripple cancellation with exact cancellation (in theory at least) occurring at N+1 points in duty cycle (from 0 to 100 percent) where N is the number of evenly interleaved phases.

+ Interleaving provides N times frequency multiplication of composite ripple currents (this usually reduces the EMI suppression task).

- Interleaving requires N separate sets of drive and (some) control circuitry.

- Interleaving requires phase control. Although this can be as simple as phased digital clock pulses, more sophisticated control will be required to provide advanced features; for example, fast full current pulse capability via transient simultaneous synchronization, or to provide phase locking while allowing the operating frequency to vary in response to line and load variations, etc.

- Interleaving may require special protection circuitry to guard against excessive long term ripple current in the event that all or most of the phases inadvertently lock up (even though power stage operation remains otherwise completely normal). This is a potential fault that is unique to systems with interleaved phases.

08-20-2013 09:30 PM
Top #3
08-20-2013 09:30 PM
Interleaved converters have been well covered in the literature, even before Abe Pressman discussed them in the 1977 edition of his book. A quick search of the IEEE Xplore database will yield dozens, if not hundreds, of papers on this topic.
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