ZVS Full Bridge Series Resonant Boost Converter with Series-Connected Transformer

2017 ◽  
Vol 8 (2) ◽  
pp. 812 ◽  
Author(s):  
Mohamed Salem ◽  
Awang Jusoh ◽  
N.Rumzi N. Idris ◽  
Tole Sutikno ◽  
Iftikhar Abid
Keyword(s):  
High Frequency ◽  
Output Voltage ◽  
Input Voltage ◽  
Switching Frequency ◽  
Zero Voltage Switching ◽  
Series Resonant ◽  
In Series ◽  
Transformer Design ◽  
Lc Tank ◽  
Zero Voltage

This paper presents a study on a new full bridge series resonant converter (SRC) with wide zero voltage switching (ZVS) range, and higher output voltage. The high frequency transformer is connected in series with the LC series resonant tank. The tank inductance is therefore increased; all switches having the ability to turn on at ZVS, with lower switching frequency than the LC tank resonant frequency. Moreover, the step-up high frequency (HF) transformer design steps are introduced in order to increase the output voltage to overcome the gain limitation of the conventional SRC. Compared to the conventional SRC, the proposed converter has higher energy conversion, able to increase the ZVS range by 36%, and provide much higher output power. Finally, the a laboratory prototypes of the both converters with the same resonant tank parameters and input voltage are examined based on 1 and 2.2 kW power respectively, for veryfing  the reliability of the performance and the operation principles of both converters.

Phase-shifted Series Resonant Converter with Zero Voltage Switching Turn-on and Variable Frequency Control

2017 ◽  
Vol 8 (3) ◽  
pp. 1184 ◽  
Author(s):  
Mohamed Salem ◽  
Awang Jusoh ◽  
Nik Rumzi Nik Idris ◽  
Tole Sutikno ◽  
Yonis.M.Yonis Buswig
Keyword(s):  
Output Voltage ◽  
Frequency Control ◽  
Switching Frequency ◽  
Resonant Converter ◽  
Zero Voltage Switching ◽  
Light Load ◽  
Wide Range ◽  
Series Resonant ◽  
Zero Voltage ◽  
Voltage Switching

This paper presents a phase shifted series resonant converter with step up high frequency transformer to achieve the functions of high output voltage, high power density and wide range of Zero Voltage Switching (ZVS). In this approach, the output voltage is controlled by varying the switching frequency. The controller has been designed to achieve a good stability under different load conditions. The converter will react to the load variation by varying its switching frequency to satisfy the output voltage requirements. Therefore in order to maintain constant output voltage, for light load (50% of the load), the switching frequency will be decreased to meet the desired output, while for the full load (100%) conditions, the switching frequency will be increased. Since the controlled switching frequency is limited by the range between the higher and lower resonant frequencies , the switches can be turned on under ZVS. In this study, a laboratory experiment has been conducted to verify the effectiveness of the system performance.

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.

Design of Full-bridge DC-DC Converter 311/100 V 1kW with PSPWM Method to Get ZVS Condition

2017 ◽  
Vol 8 (1) ◽  
pp. 59
Author(s):  
Toni Prasetya ◽  
F. Danang Wijaya ◽  
Eka Firmansyah
Keyword(s):  
Power Loss ◽  
Transition Process ◽  
Switching Frequency ◽  
Leakage Inductance ◽  
Zero Voltage Switching ◽  
Switching Power ◽  
Turn On ◽  
In Series ◽  
Zero Voltage ◽  
Primary Current

Enhancing the switching frequency can increase the power density of a fullbridge dc-dc converter. However, power loss in switches will increase due to the intersection of voltage and current during turn-on and turn-off transition process. The switching power loss can be reduced by making the condition of zero voltage switching (ZVS) which in this study is obtained by using the phase-shifted PWM method. Achieving this condition requires appropriate parameters such as deadtime, leakage inductance, and the primary current of transformer in sufficient value. In this study, ZVS is achieved when the transformer leakage inductance of 14.12 μH is added with external inductance of 24.29 μH which is installed in series with transformer and when the primary current of transformer is more than 1.289 A.

Designing of Improved Series Resonant Inverter with FPGA Controller for Heating Applications

2020 ◽  
pp. 2150088
Author(s):  
S. Dhayanandh ◽  
S. Manoharan
Keyword(s):  
High Frequency ◽  
Switching Frequency ◽  
Zero Voltage Switching ◽  
Resonant Inverter ◽  
Series Resonance ◽  
High Switching Frequency ◽  
Series Resonant ◽  
Higher Power ◽  
Series Resonant Inverter ◽  
And Control

Intensive utilization of Induction Heating (IH) innovations can be seen in numerous areas such as manufacturing industries, domestic or house hold and medicinal applications. The development of high switching frequency switches has encouraged the structure of high frequency inverters which are the key component of IH technology. Controlling the power output in a high frequency inverter for IH application is relatively complicated. This paper focuses on designing and developing a typical series resonance inverter and control it by FPGA-based controller. A MOSFET switch-based DC to AC converter is designed and Zero Voltage Switching (ZVS)-based switching strategy is accomplished to acquire less stress on switching devices and greater conversion efficiency. In this technique, secondary switched capacitor cell was proposed for resonant inverter of high frequency. To optimize the performance of the proposed inverter, the FPGA-based control system is implemented. Higher power density is the greatest advantage of this topology. The experimental and simulation model of the proposed series resonant inverter (SRI) for heating applications is developed and simulated using MATLAB/Simulink software.

scholarly journals Output Voltage Control of the SP topology IPT system based on Primary side Controller operating at ZVS

2017 ◽  
Vol 11 (1) ◽  
pp. 71-81
Author(s):  
Supapong Nutwong ◽  
Anawach Sangswang ◽  
Sumate Naetiladdanon ◽  
Ekkachai Mujjalinvimut
Keyword(s):  
Output Voltage ◽  
Coupling Model ◽  
Mutual Inductance ◽  
Switching Frequency ◽  
System Efficiency ◽  
Inductive Power Transfer ◽  
Zero Voltage Switching ◽  
The Cost ◽  
Zero Voltage ◽  
Voltage Switching

This paper presents a technique to control the output voltage of a series-parallel (SP) topology inductive power transfer (IPT) system using only a controller, located on the primary side. This reduces the cost, size, complexity and loss of the system compared to conventional IPT dual-side controllers. An asymmetrical duty cycle control (ADC) of full-bridge inverters was used to control the DC output voltage to its designed value. Additionally, a zero voltage switching (ZVS) operation can be obtained at all power levels by varying the switching frequency of the inverter. Theoretical analysis was performed through a mutual inductance coupling model and verified by computer simulation. Experimental results of the circular magnetic structure IPT system with an adjustable air-gap confirm the validity of the proposed controller. The system efficiency was improved throughout the operation and the improvement became obvious as the output power was decreased.

scholarly journals An Isolated High Voltage Boost Current-Fed DC–DC Converter Based on 1:1 Transformer Multiplier Cells and ZVS Operation

Electronics ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 102
Author(s):  
Abdulhakeem Alsaleem ◽  
Faleh Alsakran ◽  
Marcelo Godoy Simões
Keyword(s):  
High Frequency ◽  
Output Voltage ◽  
Low Voltage ◽  
Voltage Source ◽  
Design Guideline ◽  
Zero Voltage Switching ◽  
Voltage Stress ◽  
Zero Voltage ◽  
Laboratory Prototype ◽  
Voltage Switching

This paper presents a high step up, current fed, interleaved, isolated DC–DC converter with voltage multipliers and ZVS (zero voltage switching). The converter provides zero voltage switching for all active switches and provides a high step up voltage gain that is suitable for very low voltage source applications, such as PV and other renewable sources. In addition, this converter allows the utilization of very low voltage stress switches and diodes. It reduces the current stress by interleaving the input current, and reduces the voltage stress by utilizing a half bridge based multiplier cell integrated configuration at the output voltage while providing high frequency galvanic isolation. The isolation is achieved through the use of 1:1 transformers which are easier to design, and the need for a high turns ratio is absent in this converter. The main theory of operation and the design guideline are presented, as is a laboratory prototype, all to validate the concept.

scholarly journals New Design of Phase-Shifted Full-Bridge Power Converter for Photovoltaic Application

2019 ◽  
Author(s):  
Wasan Phetphimoon ◽  
Krischonme Bhumkittipich
Keyword(s):  
High Frequency ◽  
Output Voltage ◽  
Stability Margin ◽  
Input Voltage ◽  
Power Converter ◽  
System Efficiency ◽  
Switching Loss ◽  
Minimization Method ◽  
Zero Voltage Switching ◽  
High Frequency Transformer

This paper presents the design of a high frequency zero voltage switching (ZVS) full-bridge converter with a phase-shifted driving signal for photovoltaic applications. The resonant power converter can provide high-power capacity under high-frequency operation. The proposed power converter can also reduce the size of the transformer under the same power rating. The high-frequency transformer was developed by using the resonant and switching frequencies of the power converter to reduce the switching loss and to improve the system efficiency. Phase-shifted modulation was selected to drive the switches of a full-bridge power converter based on the switching loss minimization method. The desired output voltage was controlled using a closed-loop controller under a loop gain stability margin. The simulation results showed that the output voltage can be controlled to the desired constant when the input voltage changes from 30 VDC to 60 VDC. The desired output voltage of power converter is constant at 400 VDC. The power converter can transfer the DC supply to a 220 VAC household via grid-connected inverter. Therefore, the proposed study showed the effectiveness of the phase-shift ZVS full-bridge power converter with high-frequency transformer. This power converter can control the operation of the desired voltage system and has a small sizing of power converter system, low switching loss, and high system efficiency.

scholarly journals Analysis and Implementation of a Frequency Control DC–DC Converter for Light Electric Vehicle Applications

Electronics ◽  
2021 ◽  
Vol 10 (14) ◽  
pp. 1623
Author(s):  
Bor-Ren Lin
Keyword(s):  
Electric Vehicles ◽  
Output Voltage ◽  
Frequency Control ◽  
Input Voltage ◽  
Pulse Frequency ◽  
Switching Frequency ◽  
Battery Charger ◽  
Dc Microgrid ◽  
Load Voltage ◽  
Transportation Vehicle

In order to realize emission-free solutions and clean transportation alternatives, this paper presents a new DC converter with pulse frequency control for a battery charger in electric vehicles (EVs) or light electric vehicles (LEVs). The circuit configuration includes a resonant tank on the high-voltage side and two variable winding sets on the output side to achieve wide output voltage operation for a universal LEV battery charger. The input terminal of the presented converter is a from DC microgrid with voltage levels of 380, 760, or 1500 V for house, industry plant, or DC transportation vehicle demands, respectively. To reduce voltage stresses on active devices, a cascade circuit structure with less voltage rating on power semiconductors is used on the primary side. Two resonant capacitors were selected on the resonant tank, not only to achieve the two input voltage balance problem but also to realize the resonant operation to control load voltage. By using the variable switching frequency approach to regulate load voltage, active switches are turned on with soft switching operation to improve converter efficiency. In order to achieve wide output voltage capability for universal battery charger demands such as scooters, electric motorbikes, Li-ion e-trikes, golf carts, luxury golf cars, and quad applications, two variable winding sets were selected to have a wide voltage output (50~160 V). Finally, experiments with a 1 kW rated prototype were demonstrated to validate the performance and benefits of presented converter.

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