Modelling of phase‐shift modulated bidirectional CLLC resonant converter
Reads0
Chats0
TLDR
Simulation and experimental results show the models can accurately represent the behaviour of CLLC converters for both types of phase-shift modulation and results in a considerably faster execution compared to state-variable and SPICE-based models.Abstract:
The study proposes the application of two modelling techniques for analysis of bidirectional CLLC resonant converters. The state-variable and cyclic-averaging techniques are applied for converters operating under two types of phase-shift modulation: single-phase-shift and pulse-phase modulation. The converter is analysed considering forward and reverse power flow directions and a state-variable equation description is obtained for both modes. The models are first validated through simulation, comparing the state-variable and cyclic-averaging results to a simulation program with integrated circuit emphasis (SPICE)-based simulation. Additionally, a low power prototype is built, experimental results are presented and the influence of parasitic elements and system delays is discussed. Simulation and experimental results show the models can accurately represent the behaviour of CLLC converters for both types of phase-shift modulation. In addition, using the cyclic-averaging technique results in a considerably faster execution compared to state-variable and SPICE-based models.read more
Citations
More filters
Journal Article
Novel modulation strategy for a CLC resonant dual active bridge
TL;DR: In this article, the authors proposed a modulation strategy for a phase controlled capacitor-inductor-capacitor (CLC) Resonant Dual Active Bridge (RDAB) that improves the soft turn-on, zero-current-switching (ZCS) and zero-voltage switching (ZVS) range of the converter while only minimally increasing the required reactive currents in the ac link.
Journal ArticleDOI
Topology and start-up strategy for DC–DC transformers based on voltage balancing unit
Jialin Zhang,Jialin Zhang,Zha Kunpeng,Xiaojun Tang,Yang Yuefeng,Yan Hui,Fuyue Wen,Mingming Shi +7 more
TL;DR: An improved DCSST topology based on a voltage balancing unit (VBU) has the advantages of higher power density, reduced weight, and cascaded number without compromising efficiency, cost, or reliability.
Proceedings ArticleDOI
Analysis and optimal parameter selection of Full bridge bidirectional CLLC converter for EV
Shanlu Zhang,Lei Li +1 more
TL;DR: In this paper, a simplified design method of resonant tank based on fundamental harmonic approximation (FHA) is adopted, and a 1.2 kW prototype is built, and the experimental results verified the proposed method.
References
More filters
Journal ArticleDOI
Performance characterization of a high-power dual active bridge DC-to-DC converter
TL;DR: In this article, the performance of a high-power, high-density DC-to-DC converter based on the single-phase dual active bridge (DAB) topology is described.
Journal ArticleDOI
A Bidirectional DC–DC Converter for an Energy Storage System With Galvanic Isolation
S. Inoue,Hirofumi Akagi +1 more
TL;DR: In this paper, a bidirectional dc-dc converter suitable for an energy storage system with an additional function of galvanic isolation is presented, where an electric double layer capacitor is directly connected to a dc side of the converter without any chopper circuit.
Journal ArticleDOI
Efficiency-Optimized High-Current Dual Active Bridge Converter for Automotive Applications
Florian Krismer,Johann W. Kolar +1 more
TL;DR: An efficiency-optimized modulation scheme and design method are developed for an existing hardware prototype of a bidirectional dual active bridge (DAB) dc/dc converter, and the average efficiency rises from 89.6% to 93.5%.
Journal ArticleDOI
Modulation strategy to operate the dual active bridge DC-DC converter under soft switching in the whole operating range
TL;DR: In this paper, a new modulation strategy that allows operating the dual active bridge (DAB) dc-dc converter under soft switching in the whole operating range is proposed, which is ruled by imposing a certain modulation index in one of the two bridges and a phase shift between the transformer primary and secondary voltages.
Journal ArticleDOI
Snubberless Bidirectional DC–DC Converter With New CLLC Resonant Tank Featuring Minimized Switching Loss
Wei Chen,Ping Rong,Zhengyu Lu +2 more
TL;DR: Possessing the very optimal ZVS +ZCS soft-switching feature, this proposed converter will have a minimized switching loss if all of the main switches are implemented with metal-oxide-semiconductor field-effect transistors, and thereby, the proposed converter is fully soft switched and totally snubberless.
Related Papers (5)
Averaged modelling of switching power converters: reformulation and theoretical basis
J. Sun,H. Grotstollen +1 more