TAB Series-Resonant DC-DC Converter and Multi-Phase-Shift Based Global Optimization Modulation

Abstract

In this paper, a triple-active-bridge resonant dc-dc converter with the ability of topology-level power decoupling is proposed. The power coupling between the two dc ports is eliminated by adding a resonant capacitor to the common port. The operation principle and the steady-state power characteristics are analyzed. On this basis, a multi-phase-shift-based global optimization modulation is proposed to minimize the RMS values of the transformer currents in the entire power and voltage range, thus increasing the global efficiency. An experimental prototype is built to verify the correctness and availability of the proposed power decoupling topology and optimized modulation.

A Survey on Multi-Active Bridge DC-DC Converters: Power Flow Decoupling Techniques, Applications, and Challenges

“…Implementation of resonant circuits can provide other advantages, using a capacitor connected in series with the transformer windings can modify the equivalent impedance, and if the resonant frequency is selected to be equal to the switching frequency, the effect of leakage inductance on power transfer is eliminated. The port with f r = f s can be considered to be an input port, and other ports with f r < f s will achieve decoupled power flow control and behave as output ports [102] (Figure 21a).…”

Special Issue on Challenges for Power Electronics Converters

“…Rasool et al [2] proposed a dynamic electro-thermal model to accurately demonstrate the characteristics and to improve the efficiency of a three-phase inverter. Wu et al [3] proposed a tripleactive-bridge resonant DC-DC converter with the ability to carry out topology-level power decoupling and multi-phase-shift-based global optimization modulation. Wu et al [4] designed a WPT system based on an interleaved boost converter with the advantages of miniaturization and improving system efficiency.…”