Topology Deduction and Control for Dual-Active-Bridge Converters PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Topology Deduction and Control for Dual-Active-Bridge Converters PDF full book. Access full book title Topology Deduction and Control for Dual-Active-Bridge Converters by Guo Xu. Download full books in PDF and EPUB format.
Author: Guo Xu
Publisher: Springer Nature
ISBN: 9819748569
Category :
Languages : en
Pages : 328
Get Book Here
Book Description
Author: Guo Xu
Publisher: Springer Nature
ISBN: 9819748569
Category :
Languages : en
Pages : 328
Get Book Here
Book Description
Author: Guo Xu
Publisher: Springer
ISBN: 9789819748556
Category : Technology & Engineering
Languages : en
Pages : 0
Get Book Here
Book Description
This book provides a comprehensive review and classification for dual active bridge DC-DC converters. Based on the unified topology architecture of the dual active bridge DC-DC converters, the topologies derivation law is studied and new converter topologies are deducted correspondingly. Several novel converters are provided to illustrate different topology modification methods, including modified IO types, modified active bridges, modified transformers, adding auxiliary high-frequency networks, and modular topology structure. Meanwhile, the control optimization and the parameter design of the novel converters are also investigated.
Author: Hengsi Qin
Publisher:
ISBN:
Category : Electric current converters
Languages : en
Pages : 202
Get Book Here
Book Description
"This dissertation presents a comprehensive study of Dual Active Bridge (DAB) converters for Solid State Transformers (SSTs). The first contribution is to propose an ac-ac DAB converter as a single stage SST. The proposed converter topology consists of two active H-bridges and one high-frequency transformer. Output voltage can be regulated when input voltage changes by phase shift modulation. Power is transferred from the leading bridge to the lagging bridge. It analyzes the steady-state operation and the range of zero-voltage switching. It develops a switch commutation scheme for the ac-ac DAB converters. Simulation and experiment results of a scaled down prototype are provided to verify the theoretical analysis. The second contribution is to develop a full-order continuous-time average model for dc-dc DAB converters. The transformer current in DAB converter is purely ac, making continuous-time modeling difficult. Instead, the proposed approach uses the dc terms and 1st order terms of transformer current and capacitor voltage as state variables. Singular perturbation analysis is performed to find the sufficient conditions to separate the dynamics of transformer current and capacitor voltage. Experimental results confirm that the proposed model predicts the small-signal frequency response more accurately. The third contribution addresses the controller design of a dc-dc DAB converter when driving a single-phase dc-ac inverter. It studies the effect of 120 Hz current generated by the single-phase inverter. The limitation of PI-controller is investigated. Two methods are proposed to reduce the voltage ripple at the output voltage of DAB converter. The first method helps the feedback loop with feedforward from inverter, while the second one adds an additional resonance controller to the feedback loop. Theoretical analysis, simulation and experiment results are provided to verify the effectiveness of the proposed methods"--Abstract, leaf iii.
Author: Jingxin Hu
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: John K. George
Publisher:
ISBN:
Category :
Languages : en
Pages : 348
Get Book Here
Book Description
A symmetrical LLC resonant converter topology with a fixed-frequency quasi-triple phase-shift modulation method is proposed for battery-powered electric traction systems with extensions to other battery storage systems. Operation of the converter with these methods yields two unique transfer characteristics and is dependent on the switching frequency. The converter exhibits several desirable features: 1) load-independent buck-boost voltage conversion when operated at the low-impedance resonant frequency, allowing for dc-link voltage regulation, zero-voltage switching across a wide load range, and intrinsic load transient resilience; 2) power flow control when operated outside the low-impedance resonance for integrated battery charging; 3) and simple operational mode selection based on needed functionality with only a single control variable per mode. Derivation of the transfer characteristics for three operation cases using exponential Fourier series coefficients is presented. Pre-design evaluation of the S-LLC converter is presented using these analytical methods and corroborated through simulation. Furthermore, the construction of a rapid-prototyping magnetics design tool developed for high-frequency transformer designs inclusive of leakage inductance, which is leveraged to create the magnetic elements needed for this work. Two 2kW prototypes of the proposed topology are constructed to validate the analysis, with one prototype having a transformer incorporating the series resonant inductance and secondary clamp inductance into the transformer leakage and magnetizing inductance, respectively. A test bench is presented to validate the analysis methods and proposed multi-operational control scheme. Theoretical and experimental results are compared, thus demonstrating the feasibility of the new multi-mode operation scheme of the S-LLC converter topology.
Author: Kavya Suma Gompa
Publisher:
ISBN:
Category :
Languages : en
Pages : 218
Get Book Here
Book Description
The dual active bridge isolated dc-dc converter is the most widely chosen converter for high-power density bidirectional power flow applications with its inherent galvanic isolation and ease of realizing soft-switching capabilities[1]. Modern power electronics often have to sustain higher ranges of loads and especially for applications like Point of Load (POL) regulators and data-centre specific applications where the conversion ratio is very high and also the converter lives in light load conditions for a significant part of its lifetime. In such converters the light load efficiency improvements without effecting the full-load conditions, thereby improving the overall efficiency of the converter is critical. One key learning for a converter design is that it is crucial when learning about more advanced converter topologies to understand the science behind how it works and especially understanding the design trade-offs. The proposed converter architecture proposed in this thesis illustrates a 48-1.8V single conversion with an input-series-output-parallel (ISOP) architecture. The attractive features of the converter are (a) light load efficiency improvements without impacting the full-load efficiency, (b) single-switch resonant gating design for a full-bridge inverter (c) data driven design strategy for the converter topology
Author: 葉昶均
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
Author: Xinbo Ruan
Publisher: John Wiley & Sons
ISBN: 9781118702208
Category : Technology & Engineering
Languages : en
Pages : 0
Get Book Here
Book Description
Soft-switching PWM full-bridge converters have been widely used in medium-to-high power DC-DC conversions for topological simplicity, easy control and high effi ciency. Early works on soft-switching PWM full-bridge converter by many researchers included various topologies and modulation strategies. However, these works were scattered, and the relationship among these topologies and modulation strategies had not been revealed. This book intends to describe systematically the soft-switching techniques for pulse-width modulation (PWM) full-bridge converters, including the topologies, control and design, and it reveals the relationship among the various topologies and PWM strategies previously proposed by other researchers. The book not only presents theoretical analysis, but also gives many detailed design examples of the converters. Describes the soft-switching techniques for pulse-width modulation (PWM) full-bridge converters systematically Covers topologies, control and design, from the basics, through to applications and development Deliberates the soft-switching PMW control technique rather than the standard PWM control technique Presents detailed theoretical analysis with design examples for various possible variations to the full-bridge topology using the soft-switching technique Soft-Switching PWM Full-Bridge Converters: Topologies, Control, and Design is an essential and valuable reference for graduate students and academics majoring in power electronics and power supply design engineers. Senior undergraduate students majoring in electrical engineering and automation engineering would also fi nd this book useful.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
In this paper, we introduce a new method of modeling voltage-controlled dual active bridge converters as equivalent circuits. What makes the proposed model unique is that the entire closed loop system converter and control are represented together in one equivalent circuit. Since the full system can be recast as a circuit, this allows for deeper insights on how the closed-loop system performs and for the direct application of circuit analysis techniques. In particular, we reveal how classical control notions can be understood as circuit laws.
Author: Amr Amin
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
