Abstract
This paper proposes a novel control design for a Current-Fed Dual Active Bridge (CFDAB) converter in boost mode. The Double PWM plus Double Phase Shifted (DPDPS) modulation is applied to the converter due to its considerable merits. A small-signal model is developed to control the output voltage stably in boost mode. Simulations of the control design for the CFDAB converter were conducted to verify the proposed model. The results show that the system can achieve high performance, not only in the dynamic response but also in the steady-state.
Highlights
Nowadays, the growth in renewable power systems urges researchers and engineers to solve the problems of managing integrated storages and exchange powers to enhance overall system efficiency
The isolated DC/DC converter is highly recommended for its high reliability
The Dual Active Bridge (DAB) converter belongs to the isolated DC/DC type and is well-known for its advantages of high frequency operating ability, inherit zero voltage switching, and bidirectional power flow [4,5,6]
Summary
The growth in renewable power systems urges researchers and engineers to solve the problems of managing integrated storages and exchange powers to enhance overall system efficiency. This undesired current is the cause of EMI, additional loss, and unsafe installation and operation [1] Another advantage of the isolated DC/DC converter is that the flexible gain ratio can be obtained by using a high frequency transformer [2, 3]. The Dual Active Bridge (DAB) converter belongs to the isolated DC/DC type and is well-known for its advantages of high frequency operating ability, inherit zero voltage switching, and bidirectional power flow [4,5,6]. DPDPS modulation technique in comparison with SPSPWM modulation [9] is applied, and a small-signal model to regulate the output voltage is built up in boost mode.
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