Soft-Switching DC–DC Converter for Distributed Energy Sources With High Step-Up Voltage Capability

Sathyan, Shelas; Suryawanshi, H. M.; Ballal, Makarand Sudhakar; Shitole, Amardeep B.

doi:10.1109/tie.2015.2448515

Cited by 119 publications

(102 citation statements)

References 32 publications

Supporting

Mentioning

101

Contrasting

Order By: Relevance

“…3.5 Comparison of high step-up converters Table 1 gives the comparison of the proposed converter with state-of-art high step-up converters adopting coupled inductor [31][32][33][34][35]. Fig.…”

Section: Voltage Gain Of Dcmmentioning

confidence: 99%

Non-isolated high step-up DC–DC converter adopting auxiliary capacitor and coupled inductor

Ruan

2017

J. Mod. Power Syst. Clean Energy

View full text Add to dashboard Cite

For grid-connected power system based on photovoltaic (PV) source and fuel cells, high step-up and high-efficiency DC-DC converters are needed, due to the bus voltage of the grid-connected inverter is much higher than the output voltage of PV and fuel cells. In this paper, a novel high step-up converter is proposed. An auxiliary capacitor is introduced into the boost converter, which serves as a voltage source. It is in series with the input voltage source with the same voltage polarities. Thus, the input voltage is increased equivalently and the voltage gain is increased accordingly. To reduce the voltage stresses of the switch and the diode, multiple output capacitors are introduced. The voltage of each output capacitor is degraded leading to the reduced voltage stress. To replenish energy for the multiple output capacitors, a coupled inductor is adopted. Based on this, high step-up converter adopting auxiliary capacitor and coupled inductor is derived. The operating principles and voltage gain of the proposed converters are analyzed in this paper. In the end, experiment results are given to verify the theoretical analysis.

show abstract

Section: Voltage Gain Of Dcmmentioning

confidence: 99%

Non-isolated high step-up DC–DC converter adopting auxiliary capacitor and coupled inductor

Ruan

2017

J. Mod. Power Syst. Clean Energy

View full text Add to dashboard Cite

show abstract

“…The interleaved converter, which is presented in [44], has a higher voltage gain in duty cycles below 0.4. However, in duty cycles higher than 0.4, which is favourable in high step-up applications, the voltage gain of proposed converter goes out the voltage gain of [45]. Hence, the proposed converter is an appropriate topology for applications, where a high step-up conversion ratio is required.…”

Section: Conversion Ratiomentioning

confidence: 99%

A floating-output interleaved boost DC–DC converter with high step-up gain

Kianpour

Shahgholian

2017

Automatika

View full text Add to dashboard Cite

A new interleaved boost converter with high step-up gain is presented in this paper. The proposed topology integrates coupled inductors and floating-output capacitors technique into interleaved boost converter to provide high step-up voltage gain without extreme duty cycle. The voltage stress on the power switches and diodes is very low, so low-cost and highperformance semiconductor devices can be employed. Also, the reverse recovery problem of all diodes is mitigated and zero-current-switching (ZCS) turn-on operation of the main switches is established as well. In addition, the passive clamp circuits are employed to suppress the voltage spikes across the main switches during turn-off instants. The operating principles and steady-state analysis of the proposed converter in continuous condition mode are explained. Finally, the simulation and experimental results of prototype 25-400 V circuit with 200 W output power are provided to verify the performance of presented topology.

show abstract

“…Solar PV systems are the most sought after renewable energy source due to the universal availability of the solar irradiation and the flexibility to install the PV panel at the consumer end. In order to improve the efficiency of the PV system by overcoming the losses due to the partial shading and module mismatches, modular PV systems are preferred for low power applications [2], [3]. Here a highly efficient, high voltage gain dc-dc converter is required to step up the low voltage output of the PV to that of the dc bus voltage.…”

Section: Introductionmentioning

confidence: 99%

“…Natural voltage balancing of the output capacitor and lower device stress are the advantage of this voltage multiplier. In nonisolated coupled inductor converters, to reduce the voltage stress on the output diode and also to improve the voltage gain, voltage multipliers which are used in the isolated converters are introduced at the secondary side of the coupled inductor [3], [5], [14]- [21]. These converters achieve higher voltage gain without extreme duty ratio operation.…”

Section: Introductionmentioning

confidence: 99%

ZVS–ZCS High Voltage Gain Integrated Boost Converter for DC Microgrid

Sathyan

Suryawanshi

Singh

et al. 2016

IEEE Trans. Ind. Electron.

Self Cite

109

View full text Add to dashboard Cite

A non-isolated soft switched integrated boost converter having high voltage gain is proposed for the module integrated PV systems, fuel cells and other low voltage energy sources. Here a bidirectional boost converter is integrated with a resonant voltage quadrupler cell to obtain higher voltage gain. The auxiliary switch of the converter, which is connected to the output port acts as an active clamp circuit. Hence ZVS (zero voltage switching) turn on of the MOSFET switches are achieved. Coupled inductor's leakage energy is recycled to the output port through this auxiliary switch. In the proposed converter, all the diodes of the quadrupler cell are turned off with ZCS (zero current switching). This considerably reduces the high frequency turn off losses and reverse recovery losses of the diodes. ZCS turn off of the diodes also remove the diode voltage ringing caused due to the interaction of the parasitic capacitance of the diodes and the leakage inductance of the coupled inductor. Hence to protect the diodes from the voltage spikes, snubbers are not required. The voltage stress on all the MOSFETs and diodes are lower. This helps to choose switches of low voltage rating (low RDS(ON )) and thus improve the efficiency. Design and mathematical analysis of the proposed converter are made. A 250W prototype of the converter is built to verify the performance.

show abstract

Soft-Switching DC–DC Converter for Distributed Energy Sources With High Step-Up Voltage Capability

Cited by 119 publications

References 32 publications

Non-isolated high step-up DC–DC converter adopting auxiliary capacitor and coupled inductor

Non-isolated high step-up DC–DC converter adopting auxiliary capacitor and coupled inductor

A floating-output interleaved boost DC–DC converter with high step-up gain

ZVS–ZCS High Voltage Gain Integrated Boost Converter for DC Microgrid

Contact Info

Product

Resources

About