scholarly journals Analytic Solutions for Full Operating Range Single-Side ZVS Modulation of Dual Active Bridge Converters

2021 ◽  
Author(s):  
Michael Saegmueller ◽  
Christoph Hackl ◽  
Rolf Witzmann ◽  
Rene Richter
Keyword(s):  
Single Phase ◽  
Analytic Solutions ◽  
Modulation Scheme ◽  
Zero Voltage Switching ◽  
Operating Range ◽  
Dual Active Bridge ◽  
Switching Losses ◽  
Single Side ◽  
Secondary Side ◽  
Zero Voltage

<div><div><div><p>This paper presents analytic solutions for an optimal modulation scheme featuring low switching losses for a bidirec- tional single-phase dual active bridge (DAB) DC-DC converter used for charging high-voltage batteries of electric vehicles. The proposed modulation scheme facilitates zero-voltage switching (ZVS) for either the primary- or secondary-side full bridge of the DAB converter throughout the whole operating range while maintaining low conduction losses. The expressions are derived based on the current required for an ideal ZVS transition and enable for a direct computation of the respective optimal modulation parameters.</p></div></div></div>

scholarly journals Analytic Solutions for Full Operating Range Single-Side ZVS Modulation of Dual Active Bridge Converters

2021 ◽  
Author(s):  
Michael Saegmueller ◽  
Christoph Hackl ◽  
Rolf Witzmann ◽  
Rene Richter
Keyword(s):  
Single Phase ◽  
Analytic Solutions ◽  
Modulation Scheme ◽  
Zero Voltage Switching ◽  
Operating Range ◽  
Dual Active Bridge ◽  
Switching Losses ◽  
Single Side ◽  
Secondary Side ◽  
Zero Voltage

<div><div><div><p>This paper presents analytic solutions for an optimal modulation scheme featuring low switching losses for a bidirec- tional single-phase dual active bridge (DAB) DC-DC converter used for charging high-voltage batteries of electric vehicles. The proposed modulation scheme facilitates zero-voltage switching (ZVS) for either the primary- or secondary-side full bridge of the DAB converter throughout the whole operating range while maintaining low conduction losses. The expressions are derived based on the current required for an ideal ZVS transition and enable for a direct computation of the respective optimal modulation parameters.</p></div></div></div>

scholarly journals Performance Evaluation of a Semi-Dual-Active-Bridge with PPWM Plus SPS Control

Electronics ◽  
2018 ◽  
Vol 7 (9) ◽  
pp. 184 ◽  
Author(s):  
Ming Lu ◽  
Xiaodong Li
Keyword(s):  
Pulse Width Modulation ◽  
Secondary Phase ◽  
Effective Control ◽  
Zero Voltage Switching ◽  
Dual Active Bridge ◽  
Light Load ◽  
Control Scheme ◽  
Working Principle ◽  
Secondary Side ◽  
Zero Voltage

In this paper, a semi-dual-active-bridge (S-DAB) DC/DC converter with primary pulse-width modulation plus secondary phase-shifted (PPWM + SPS) control for boost conversion is analyzed in detail. Under the new control scheme, all effective operation modes are identified at first. Then, the working principle, switching behaviour, and operation range in each mode are discussed. Compared with conventional secondary phase-shifted control, PPWM + SPS control with two controllable phase-shift angles can extend the zero-voltage switching (ZVS) range and enhance control flexibility. In addition, an effective control route is also given that can make the converter achieve at the global minimum root-mean-square (RMS) current across the whole power range and avoid the voltage ringing on the transformer secondary-side at a light load. Finally, a 200 W prototype circuit is built and tested to verify correctness and effectiveness of theoretical results.

scholarly journals A Control Strategy for Bidirectional Isolated 3-Phase Current-Fed Dual Active Bridge Converter

Electronics ◽  
2018 ◽  
Vol 7 (10) ◽  
pp. 214 ◽  
Author(s):  
Dong-Min Lee ◽  
Seung-Wook Hyun ◽  
Jin-Wook Kang ◽  
Yong-Su Noh ◽  
Chung-Yuen Won
Keyword(s):  
Pulse Width Modulation ◽  
Soft Switching ◽  
Zero Voltage Switching ◽  
Phase Current ◽  
Dual Active Bridge ◽  
Circulating Current ◽  
Operation Techniques ◽  
Simulation And Experiment ◽  
Output Capacitor ◽  
Zero Voltage

This paper examines the characteristics of the zero voltage switching (ZVS) and zero voltage transition (ZVT) soft-switching applied in the 3-phase current fed dual active bridge (3P-CFDAB) converter, which combines the advantages of the dual active bridge (DAB) converter and current-fed full bridge (CFFB) converter. When an active clamp circuit is added to the CFFB converter, the circuit configuration of the DAB converter is shown in part of the entire circuit. This allows the use of pulse width modulation (PWM) techniques which combine the PWM techniques of both the DAB converter and CFFB converter. The proposed converter performs both duty and phase control at the same time in order to reduce the circulating current and ripple current of the output capacitor, which are the disadvantages of the CFFB converter and DAB converter. In addition, the ZVS and ZVT soft switching areas were analyzed by means of the phase current and leakage inductor current in each transformers. To verify the principle and feasibility of the proposed operation techniques, a simulation and experiment were implemented with the 3P-CFDAB.

scholarly journals Design and Implementation of 2.5kW IBFB-LLC DC/ DC Converter Using SiC Mosfet

2021 ◽  
Vol 31.2 (149) ◽  
pp. 7-14
Keyword(s):  
High Frequency ◽  
Power Flow ◽  
Input Voltage ◽  
Voltage Range ◽  
Zero Voltage Switching ◽  
Design And Implementation ◽  
Switching Losses ◽  
Power Switches ◽  
Isolation Transformer ◽  
Zero Voltage

Interleaved Boost Full Bridge integrated LLC resonant (IBFB- LLC) is an isolated DC/DC converter with directional power flow, which can cope with a wide input voltage range of PV applications. The main losses of the converter are switching losses of the power switches and transformers losses. This paper proposes a method to improve the efficiency of the IBFB converter due to zero voltage switching technique, in combination with employing new SiC MOSFET technology instead of the conventional Si MOSFET. In addition, Litz wire is also adopted to reduce the losses on the high frequency isolation transformer. Both numerical simulations and experiments with a prototype 2.5kW converter are implemented to verify the feasibility and effectiveness of the proposed solution.

Dual Active Bridge Modulation with Complete Zero Voltage Switching Taking Resonant Transitions into Account

EPE Journal ◽  
2012 ◽  
Vol 22 (1) ◽  
pp. 5-12 ◽  
Author(s):  
Giuseppe Guidi ◽  
Atsuo Kawamura ◽  
Yuji Sasaki ◽  
Tomofumi Imakubo
Keyword(s):  
Zero Voltage Switching ◽  
Dual Active Bridge ◽  
Resonant Transitions ◽  
Zero Voltage ◽  
Voltage Switching
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