We present a decentralized control strategy that yields switch interleaving among parallel-connected DC-DC buck converters. The proposed method is based on the digital implementation of the dynamics of a nonlinear oscillator circuit as the controller. Each controller is fully decentralized, i.e., it only requires the locally measured output current to synthesize the pulse width modulation (PWM) carrier waveform and no communication between different controllers is needed. By virtue of the intrinsic electrical coupling between converters, the nonlinear oscillator-based controllers converge to an interleaved state with uniform phase-spacing across PWM carriers. To the knowledge of the authors, this work presents the first fully decentralized strategy for switch interleaving in paralleled DC-DC buck converters.
|Original language||English (US)|
|Title of host publication||2017 IEEE 18th Workshop on Control and Modeling for Power Electronics, COMPEL 2017|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|State||Published - Aug 18 2017|
|Event||18th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2017 - Stanford, United States|
Duration: Jul 9 2017 → Jul 12 2017
|Name||2017 IEEE 18th Workshop on Control and Modeling for Power Electronics, COMPEL 2017|
|Other||18th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2017|
|Period||7/9/17 → 7/12/17|
Bibliographical noteFunding Information:
Funding support from the the U.S. Department of Energy (DOE) Solar Energy Technologies Office under Contract No. DE-EE0000-1583, and the National Science Foundation under grant ECCS-1509277 is gratefully acknowledged.
© 2017 IEEE.