Design of boost converter with voltage multiplier cell for single phase AC load applications
01 Jan 2019-
TL;DR: In this article, a boost converter with 0.5 duty cycle was fabricated and tested and the results obtained from hardware and software simulation is shown to have better efficiency. And the boost converter fabricated has specifications of 24-48V conversion and power rating of 96W. The efficiency was found to be 93%.
Abstract: The fast depleting rate of fossil fuels necessitates the need for alternate renewable energy sources to generate electricity. Electricity plays a pivotal role in the country’s economic development and has a pre-eminent role to play. One way of converting the incident sunlight into electricity is by using PV cells. This proposed paper focuses on using the power generated from PV cells for supplying single phase AC loads. A boost converter with 0.5 duty cycle was fabricated and tested. The results obtained from hardware and software simulation is shown to have better efficiency. This concept is simulated using PLECS software. The boost converter fabricated has specifications of 24-48V conversion and power rating of 96W. The efficiency was found to be 93%.
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TL;DR: In this paper , a two-stage switched capacitor-switched inductor multiplier was proposed for high step-up DC-DC converters. And the proposed converter consists of a novel combination of switched capacitors and switched inductors methods that reduce the number of required switches and their duty cycles.
Abstract: High step-up DC-DC converters are considered the main components of some low-voltage and low-power fuel cell power system applications. A new DC-DC converter topology based on a two-stage switched capacitor-switched inductor multiplier is proposed in this paper. In comparison with other conventional and high step-up DC-DC converters, the proposed converter topology provides higher voltage gain and lower switch voltage stresses for duty cycles in the range of 0.6 or higher, the typical duty cycle of high step-up DC-DC converters. The proposed converter consists of a novel combination of switched capacitors and switched inductors methods that reduce the number of required switches and their duty cycles. The theoretical analysis was confirmed by simulation results in MATLAB/Simulink software environment results. A 100 W laboratory prototype of the proposed converter was implemented to investigate and validate the analytical and simulation results. The prototype DC-DC converter was designed and implemented for use in a commercial 100 W PEM fuel cell stack power system.
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TL;DR: In this article, the use of the voltage multiplier technique applied to the classical non-isolated dc-dc converters in order to obtain high step-up static gain, reduction of the maximum switch voltage, zero current switching turn-on was introduced.
Abstract: This paper introduces the use of the voltage multiplier technique applied to the classical non-isolated dc-dc converters in order to obtain high step-up static gain, reduction of the maximum switch voltage, zero current switching turn-on. The diodes reverse recovery current problem is minimized and the voltage multiplier also operates as a regenerative clamping circuit, reducing the problems with layout and the EMI generation. These characteristics allows the operation with high static again and high efficiency, making possible to design a compact circuit for applications where the isolation is not required. The operation principle, the design procedure and practical results obtained from the implemented prototypes are presented for the single-phase and multiphase dc-dc converters. A boost converter was tested with the single-phase technique, for an application requiring an output power of 100 W, operating with 12 V input voltage and 100 V output voltage, obtaining efficiency equal to 93%. The multiphase technique was tested with a boost interleaved converter operating with an output power equal to 400 W, 24 V input voltage and 400 V output voltage, obtaining efficiency equal to 95%.
702 citations
01 Jan 2016
TL;DR: This paper comprehensively reviews different voltage boosting techniques and categorizes them according to their circuit performance and makes a clear sketch of the general law and framework of various Voltage boosting techniques.
Abstract: Step-up dc-dc converters are used to boost the voltage level of the input to a higher output level. Despite of its features such as simplicity of implementation, the fundamental boost dc-dc converter has shortcomings such as low boost ability and low power density. With these limitations, researches on new voltage boosting techniques are inevitable for various power converter applications. This can be achieved either by additional magnetic or by electric field storage elements with switching elements (switch and/or diode) in different configurations. Such combination of primary voltage boosting techniques and topologies are large, which at times may be confusing and difficult to follow/adapt for different applications. Considering these aspects and in order to make a clear sketch of the general law and framework of various voltage boosting techniques, this paper comprehensively reviews different voltage boosting techniques and categorizes them according to their circuit performance.
36 citations
"Design of boost converter with volt..." refers methods in this paper
...Voltage multiplier rectifier (VMR) are used at the output stage of transformer and coupled inductor based structures, which rectifies the AC or pulsating DC voltage, and it meanwhile also acts as a voltage multiplier [3]....
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TL;DR: A comparative study on all the types of HG cell concerning voltage gain, voltage stress and switch utilization factor, and efficiency is made and an efficient HG cell is determined in positive output HG cell.
9 citations