Automatic Triple Phase-Shift Modulation for DAB Converter With Minimized Power Loss

Abstract

General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. Users may download and print one copy of any publication from the public portal for the purpose of private study or research.  You may not further distribute the material or use it for any profit-making activity or commercial gain  You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.

Backflow Power Optimization of DAB Based on Asymmetric Duty Cycle and Internal Phase Shift Control

“…This result obtained from the waveform analysis is the same as (12) for zero backflow power given in the previous section from mathematical modelling. Similarly the constraints for zero backflow power in other cases can be obtained as shown in Table 1:…”

“…Reducing and eliminating the backflow power is an important research aspect of DAB converters in terms of control strategies. Control methods such as extended phase shift control (EPS) [10] and double phase shift control (DPS) [11], derived from SPS control, can all be seen as special forms of triple phase shift control (TPS) [12]. In these methods, all switching tubes are switched on and off with a duty cycle of 0.5, using the phase shift angle between the primary and secondary switches to control the power flow.…”

Phase shift control of dual active bridge DC‐DC converter based on feedforward compensation and transient optimization strategy

“…The SPS control strategy of the DAB converter is the simplest, but it not only lacks flexibility in power regulation but also brings additional stress to the switching devices in the converter 8–10 ; the DAB converter based on SPS control produces the return power of the DAB converter that is relatively large, which will inevitably lead to a decrease in efficiency, and at light load or even zero power transmission, the inherent soft switching properties of the DAB converter may fail, which will cause transmission power loss 7 ; Guan et al 11 expounds the mechanism and suppression method of backflow power, but this method cannot reduce the current stress; Chen et al 12 consider the magnetizing inductance and can realize full‐load zero voltage switching (ZVS) under SPS control. By introducing an inner phase shift to suppress the backflow power, it can even eliminate the backflow power and can realize full‐load ZVS from the control strategy, which forms various control strategies: EPS control, 13 DPS control, 14–16 and TPS control 17 . Compared with EPS, DPS which can not only reduce the requirements for switching devices and reduce losses but also improve the efficiency of the converter 18 .…”

“…By introducing an inner phase shift to suppress the backflow power, it can even eliminate the backflow power and can realize full-load ZVS from the control strategy, which forms various control strategies: EPS control, 13 DPS control, [14][15][16] and TPS control. 17 Compared with EPS, DPS which can not only reduce the requirements for switching devices and reduce losses but also improve the efficiency of the converter. 18 There are few researches on the control strategy of DAB converter in the transient state when the power changes, especially the research on the reverse power conversion.…”

Artificial Neural Networks-Based Multi-Objective Design Methodology for Wide-Bandgap Power Electronics Converters

“…The soft switching performance and the improved efficiency of power converters can be achieved by the triple phase shift (TPS) modulation techniques. The performance of a TPS scheme was further improved in [23], [24] for a dual active bridge converter using an AI-based automated approach. In [25], a batch-normalization-ANN was introduced to improve the prediction accuracy of the power converters design circuit parameters.…”