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.

A Novel Soft Switching Based Fuzzy Logic Control for Single Phase Inverter

2014 ◽  
Vol 573 ◽  
pp. 143-149
Author(s):  
N. Ismayil Kani ◽  
B.V. Manikandan ◽  
Prabakar Perciyal
Keyword(s):  
Fuzzy Logic ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Soft Switching ◽  
Switching Frequency ◽  
Pwm Inverter ◽  
Zero Voltage Switching ◽  
Control Scheme ◽  
Zero Voltage ◽  
Voltage Switching

—This The Pulse Width Modulation (PWM) DC-to-AC inverter has been widely used in many applications due to its circuit simplicity and rugged control scheme. It is however driven by a hard-switching pulse width modulation (PWM) inverter, which has low switching frequency, high switching loss, high electro-magnetic interference (EMI), high acoustic noise and low efficiency, etc. To solve these problems of the hard-switching inverter, many soft-switching inverters have been designed in the past. Unfortunately, high device voltage stress, large dc link voltage ripples, complex control scheme and so on are noticed in the existing soft-switching inverters. This proposed work overcomes the above problems with simple circuit topology and all switches work in zero-voltage switching condition. Comparative analysis between conventional open loop, PI and fuzzy logic based soft switching inverter is also presented and discussed. Keywords—Zero voltage switching, Inverter, Dc link, PI controller, Fuzzy logic system control ,Modulation strategy, Soft switching

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.

Multiple-Phase-Shift Control for a Dual Active Bridge to Secure Zero-Voltage Switching and Enhance Light-Load Performance

2018 ◽  
Vol 33 (6) ◽  
pp. 4584-4588 ◽  
Author(s):  
Allan Taylor ◽  
Guanliang Liu ◽  
Hua Bai ◽  
Alan Brown ◽  
Philip Mike Johnson ◽  
...  
Keyword(s):  
Phase Shift ◽  
Zero Voltage Switching ◽  
Dual Active Bridge ◽  
Shift Control ◽  
Multiple Phase ◽  
Light Load ◽  
Zero Voltage ◽  
Voltage Switching

scholarly journals A Quasi-Resonant ZVZCS Phase-Shifted Full-Bridge Converter with an Active Clamp in the Secondary Side

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2868 ◽  
Author(s):  
Duong Tran ◽  
Nam Vu ◽  
Woojin Choi
Keyword(s):  
Pulse Width Modulation ◽  
Maximum Efficiency ◽  
Load Range ◽  
Leakage Inductance ◽  
Zero Voltage Switching ◽  
Turn On ◽  
Light Load ◽  
Zero Current Switching ◽  
Active Clamp ◽  
Secondary Side

A novel Pulse-Width-Modulation (PWM) quasi-resonant active-clamp phase-shifted full-bridge converter is presented and analyzed in this paper. In the proposed topology, an active-clamp switch and a clamp capacitor that resonates with the leakage inductance of transformer are employed at the secondary side. The active-clamp circuit helps all of the primary switches in achieving both zero-voltage switching (ZVS) turn-on and nearly zero-current switching (ZCS) turn-off over the entire load range, and resets the primary current during the freewheeling interval. The operation of the active-clamp circuit eliminates voltage ringing across the rectifier. In addition, the secondary diodes can achieve ZCS turn-off, which removes the reverse recovery problem of diodes, and the active-clamp switch can achieve ZCS turn-on. A 3.5-kW prototype was built to verify the performance of the proposed converter. A maximum efficiency of 97.6% was achieved under a 2-kW load, and an efficiency of more than 96% was achieved even under a light load.

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>

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