Journal
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
Volume 9, Issue 1, Pages 223-231Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JESTPE.2020.2972960
Keywords
Dual-active bridge (DAB); dynamic performance; fast response; improved model-based phase-shift control (MPSC); voltage control
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Funding
- National Key Research and Development Program of China [2018YFB1500700]
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This article introduces an improved model-based phase-shift control strategy that ensures high-bandwidth control performance over the entire transmission power range without the need to change controller parameters online. The strategy features simple design of controller parameters and sensitivity to model parameters, and its utility and effectiveness are verified through simulations and experiments.
Fast dynamic response of the output voltage is an essential requirement for dual-active-bridge (DAB) dc/dc converters under the operation of the voltage source. This article proposes an improved model-based phase-shift control (MPSC) strategy that combines model-based control with the design of feedback regulators and load current feedforward (LCFF) regulators. The improved MPSC strategy can ensure that the DAB has high-bandwidth control performance over the entire transmission power range without changing the controller parameters online. The design of controller parameters is simple and has the same model parameter as sensitive as MPSC. Its utility and effectiveness are verified by simulations and experiments.
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