Abstract
Interleaving is a commonly used technique to reduce the output current ripple in parallel connected buck-stages. Harmonic cancellation is achieved by applying a phase-shift to the carrier waves of the pulse width modulator, resulting in a reduced output current ripple at a higher effective frequency. However, optimal interleaving is only achieved when switching cells are identical. When variations between switching cells are taken into account, subharmonic switching-frequency components will appear in the output current, resulting in a higher voltage ripple than designed for. In this paper an adaptive phase-shift control method is proposed which can solve the optimal phase-shift problem. Additionally, it will be shown that the phase-shift values can be determined by only measuring the output current. The proposed algorithm has also been verified on a experimental setup.
Original language | English |
---|---|
Title of host publication | Proceedings of the 2013 IEEE Energy Conversion Congress and Exposition (ECCE), 15-19 September 2013, Denver Colorado. |
Place of Publication | Denver, Colorado |
Publisher | Institute of Electrical and Electronics Engineers |
Pages | 763-768 |
ISBN (Print) | 978-1-4799-0336-8 |
DOIs | |
Publication status | Published - 2013 |
Event | 5th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2013) - "Colorado Convention Center", Denver, United States Duration: 15 Sept 2013 → 19 Sept 2013 Conference number: 5 http://2015.ecceconferences.org/wp-content/uploads/2015/08/ecce13_program_book-FINAL.pdf |
Conference
Conference | 5th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2013) |
---|---|
Abbreviated title | ECCE 2013 |
Country/Territory | United States |
City | Denver |
Period | 15/09/13 → 19/09/13 |
Internet address |