Decoupled Current-Balancing Control with Single-Sensor Sampling-Current Strategy for Two-Phase Interleaved Boost-Type Converters

Hung-Chi Chen, Che Yu Lu, Li Ming Huang

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

For interleaved boost-type converters, both functions of voltage regulation and current balance are important. In this paper, the decoupled current-balancing control (DCBC) with two parallel loops is proposed. At first, the small-signal transfer functions of the voltage-regulation loop and the current balancing loop to the controller output are derived. The results show that the voltage-regulation loop and the proposed current-balancing loop are nominally decoupled. That is, two PI-type controllers can be designed independently and included to implement the proposed DCBC. Additionally, the single-sensor sampling-current strategy is proposed to obtain two average inductor currents by sensing only the sum of diode currents. All the controllers are implemented in field-programmable gate array (FPGA). The provided simulation and experimental results demonstrate the proposed DCBC.

Original languageEnglish
Article number7321030
Pages (from-to)1507-1518
Number of pages12
JournalIEEE Transactions on Industrial Electronics
Volume63
Issue number3
DOIs
StatePublished - 1 Mar 2016

Keywords

  • Current Balancing Control
  • Interleaved Boost Converter
  • Single-Sensor Sampling-Current Strategy

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