IJERT-Analysis and Simulation of Novel Soft Switching High Frequency Boost Converter (original) (raw)
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Analysis and Simulation of Novel Soft Switching High Frequency Boost Converter
2014
This paper presents the analysis and simulation of a new type of soft switching boost converter used for high frequency applications. It has an active snubber cell that provides main switch to turn ON with zero voltage transition and to turn OFF with zero current transition. The proposed converter can be operated at high frequencies. In this converter all semiconductor devices operating under soft switching. Also in this converter, there is no additional voltage stress across the main and auxiliary components. Also a modified soft switching converter is also given in this paper. That can be used for ac voltage applications and it can be extended to be used in LED lighting applications. The operation, design and analysis of this PWM boost converter and simulation of new topology is also given in this paper.
High Frequency Boost Converter Employing Soft Switching Auxiliary Resonant Circuit
International Journal of Electronics and Electical Engineering, 2013
A new soft-switching boost converter is proposed in this paper. The conventional boost converter generates switching losses at turn ON and OFF, and this causes a reduction in the whole system’s efficiency. The proposed boost converter utilizes a soft switching method using an auxiliary circuit with a resonant inductor and capacitor, auxiliary switch, and diodes. Therefore, the proposed soft-switching boost converter reduces switching losses more than the conventional hard-switching converter. The efficiency, which is about 91% in hard switching, increases to about 97% in the proposed soft-switching converter. In this paper, the performance of the proposed soft-switching boost converter is verified through the theoretical analysis, simulation, and experimental results.
An improved boost PWM soft-single-switched converter with low voltage and current stresses
IEEE Transactions on Industrial Electronics, 2001
This paper presents an improved regenerative soft turn-on and turn-off snubber applied to a boost pulsewidth-modulated (PWM) converter. The boost soft-single-switched converter proposed, which has only a single active switch, is able to operate with soft switching in a PWM way without high voltage and current stresses. This is achieved by using an auxiliary inductor, which is magnetically coupled with the main inductor of the converter. In order to illustrate the operating principle of this new converter, a detailed study, including simulations as well as experimental results, is carried out. The validity of this new converter is guaranteed by the obtained results.
2023
Background and Objectives: Many applications use boost converters as front-end circuits, including power factor correction (PFC), solar power generation, fuel cell power conversion, battery chargers, and uninterruptible power supply. In addition, boost converters have a simple structure with low component counts, which makes them a convenient choice. Methods: This article proposes a coupled-inductor active auxiliary circuit to create a new low-stress boost converter with soft-switching. The proposed auxiliary circuit supplies the main switch and diode with soft-switching ZVC turn-on and ZCS turn-off states. The main switch and diode are not deal with any extra stress of voltage or current. Furthermore, the soft switching condition is also provided for auxiliary circuit components. Results: The proposed auxiliary circuit also has a simple structure, low circulating current losses, low cost, and simplicity in control. The operation state and performance of the proposed soft-switching boost converter are examined, and the design procedure is presented. Finally, a 200W prototype is implemented and tested to validate the theoretical results. The offered experimental data verified the theoretical analysis. Conclusion: This paper provides a new low-stress soft-switching boost converter using a simple coupled-inductor in the auxiliary circuit. Moreover, the auxiliary part consists of two diodes, one switch, one resonance capacitor, and a coupled inductor. The suggested auxiliary circuit provides soft switching condition for the main switch, which provides ZVS in the turn-on transient and ZCS in the turn-off transient, while in this situation, the soft-switching condition is provided for the auxiliary switch, which turns on under ZCS and also turns off with practically ZVS conditions. The auxiliary circuit does not impose additional voltage or current stress on the main switch. A 200 W prototype is implemented to validate the performance of this snubber cell. The experimental data reported here support the theoretical analysis. The best point of efficiency is 95.9% which is occurred at maximum load, and is 6.3% greater than the traditional counterparts.
Analysis, Design and Experimental Validation of Modified Simple Soft Switching DC-DC Boost Converter
International Journal of Emerging Electric Power Systems, 2015
This paper investigates a modified simple soft switching dc-dc converter for low power applications. This simple topology uses an auxiliary switch, an inductor and a capacitor to operate the converter without switching losses. The efficiency of the converter is improved by transferring the energy that would be dissipated during the switching to the load. The main switch turns-on with zero current switching (ZCS) and turns-off with zero voltage switching (ZVS), while the auxiliary switch turns-on and turns-off with zero voltage switching (ZVS). The detailed theoretical analysis and the design equations are described. In addition to that, the analysis of proposed converter is demonstrated by both simulation and experimental results for effectiveness of the study.
An improved soft switched PWM interleaved boost AC–DC converter
Energy Conversion and Management, 2011
In this paper, an improved soft switched two cell interleaved boost AC/DC converter with high power factor is proposed and investigated. A new auxiliary circuit is designed and added to two cell interleaved boost converter to reduce the switching losses. The proposed auxiliary circuit is implemented using only one auxiliary switch and a minimum number of passive components without an important increase in the cost and complexity of the converter. The main advantage of this auxiliary circuit is that it not only provides zero-voltage-transition (ZVT) for the main switches but also provides soft switching for the auxiliary switch and diodes. Though all semiconductor devices operate under soft switching, they do not have any additional voltage and current stresses. The proposed converter operates successfully in soft switching operation mode for a wide range of input voltage level and the load. In addition, it has advantages such as fewer structure complications, lower cost and ease of control. In the study, the transition modes for describing the behavior of the proposed converter in one switching period are described. A prototype with 600 W output power, 50 kHz/cell switching frequency, input line voltage of 110-220 V rms and an output voltage of 400 V dc has been implemented. Analysis, design and the control circuitry are also presented in the paper.
Analysis of a soft switched dual-boost converter
2015
This paper proposes a soft switched dual-boost converter using an auxiliary resonant circuit. The topology is composed of a general dual-boost converter and an auxiliary resonant circuit including one switch, inductor, capacitor and two diodes. The auxiliary resonant circuit helps the main switch to operate under ZVT condition. The auxiliary switch is also operated at soft switching mode. Furthermore, the proposed circuit removes the voltage stress on the main and auxiliary switches. Under soft switching conditions the efficiency of the converter increases. The converter has various advantages compared with the conventional boost converters as higher boost rate with low duty cycle, lower voltage stress on components and higher efficiency.
A boost PWM soft-single-switched converter with low voltage and current stresses
IEEE Transactions on Power Electronics, 1998
This paper is an improved version of a previous one that describes a boost pulse-width-modulated (PWM) soft-singleswitched converter, which, having only a single active switch, is able to operate with soft switching in a PWM way without high voltage and current stresses. In addition, such a converter can work at high-switching frequencies for a wide load range. In order to illustrate the operating principles of this converter, a detailed study, including simulations and experimental tests, is carried out. The validity of this converter is guaranteed by the obtained results.
An Overview to Soft-Switching Boost Converters for Photovoltaic
International Journal of Computer and Electrical Engineering, 2013
In this paper, four different topologies of soft-switching boost converter using a simple auxiliary resonant circuit for solar power system are reviewed. These converters have simple structure, low cost and ease of control and are applicable for photovoltaic applications. Also, these topologies raise efficiency and, minimize switching losses by adopting soft-switching method using resonance. As we know efficiency, number of components and, voltage and current stresses are effective in selecting the converter for different applications. Therefore we need to choose the optimal boost converter considering above indexes. Efficiency, number of components and voltage and current stresses of these soft-switching boost converters have been compared in this paper to choose the optimal converter for photovoltaic application.
SOFT SWITCHED AUXILIARY RESONANT CIRCUIT BASED BOOST CONVERTER WITH REDUCED STRESS USING ZVT PWM
The stress across the switch and the ripples in the output voltages in a Boost converter can be decreased with the help of soft switching. This paper proposes a soft switched auxiliary resonant circuit to provide a zero voltage transition (ZVT) turn on for the main switch in a conventional pulse width modulated boost converter. The proposed auxiliary circuit will enable the main switch to be turned on exactly or near to ZVT. The auxiliary circuit consists of an auxiliary switch which is also turned on by ZVT. The PWM boost converter causes voltage stress across the switches when turned on under non zero voltage turn on process. This voltage stress can be reduced by turning on the switch under ZVT. Moreover, the circuit has been designed to provide proper gating signals for the switches. Also the passive components involved in this circuit are designed for the reduction of voltage ripples that appears across the output voltage .Detailed operation and the circuit waveforms are theoretically explained. To verify the effectiveness of the proposed circuit, the simulation is done using PSIM software.