High Step-Up Gain DC–DC Converter With Switched Capacitor and Regenerative Boost Configuration for Solar PV Applications

Karthikeyan, V.; Kumaravel, S.; Gurukumar, Gangavarapu

doi:10.1109/tcsii.2019.2892144

Cited by 80 publications

(40 citation statements)

References 16 publications

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“…Thus, the efficiency is given as η = P in − P total loss × 100 P in (25) with η indicating the efficiency, P in being the input power and P total loss representing the total power loss of elements.…”

Section: Power Loss Analysismentioning

confidence: 99%

“…In [24], although the combination of a qZS network and quadratic boost converter is used to modify the voltage gain, its voltage gain is the same as the conventional ZS converter. Similarly, a combination of an SC network and regenerative boost configuration is represented in [25] to achieve high boosting capabilities. This converter achieves high voltage gains with a high duty cycle close to one.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis and design of a high voltage‐gain quasi‐Z‐source DC–DC converter

Meinagh

Yuan

Yang

2020

IET Power Electronics

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In this study, a modified DC-DC converter is proposed, which can achieve a high voltage-gain exploiting both quasi-Z-source and switched-capacitor networks. In addition to the high voltage-gain, the proposed converter has low voltage stresses on its elements. The steady-state analysis in both continuous and discontinuous conduction modes is given in this study. Moreover, the design of the passive elements, the calculation of the non-ideal voltage gain, and the power loss analysis are done. Then, an extended topology of the proposed converter is presented, which further enhances the voltage gain, while maintaining the voltage stresses of the components. A comprehensive comparison with the prior-art converters is performed to accentuate the advantages of the proposed converter. Finally, simulations and experimental tests are provided to substantiate the theoretical analysis.

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Section: Power Loss Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis and design of a high voltage‐gain quasi‐Z‐source DC–DC converter

Meinagh

Yuan

Yang

2020

IET Power Electronics

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“…The value of dv/dt and EMI issues and voltage ringing across the switches are reduced. A high gain DC-DC converter is reported by combining the switched capacitor and regenerative boost configuration [24], but the device count is increased. A control scheme for the boost converter operated with a grid-connected PV system is reported in [25].…”

Section: Introductionmentioning

confidence: 99%

Binary Hybrid Multilevel Inverter-Based Grid Integrated Solar Energy Conversion System With Damped SOGI Control

et al. 2020

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This paper presents a binary hybrid multilevel inverter (BHMLI) based grid-connected solar energy conversion system (SECS), controlled by damped second-order generalized integral (DSOGI). The BHMLI architect has a cascaded half-bridge array, which modifies the DC-link of the H-bridge of the voltage source inverter, and results in approximate reference waveform. It reduces the dV/dt of the H-bridge switches and improves output waveform quality. The DSOGI control damps the oscillations and overshoots and provides longer service period of low power switches at transient conditions. It is implemented in the multilevel inverter application for the first time in literature. The SECS is designed to inject active power to the grid, and also mitigates the harmonic and reactive power demands of the load. The cascading of 'n' half-bridges and one H-bridge generate (2 (nC1) − 1) output voltage levels. The maximum power extraction from solar photovoltaic (PV) array is achieved through incremental conductance (IC) algorithm based maximum point tracking (MPPT) operation of the DC-DC converter. An isolated single-input multipleoutput single-ended primary inductance converter (SIMO-SEPIC) realizes it. SECS with 15-level BHMLI is analyzed with extensive simulation as well as with a hardware prototype. Moreover, the shunt active filter functionality of the system at various load conditions are verified and maintained the grid power quality within the IEEE-519 standard throughout the operation. The laboratory developed setup is tested for 5 kW, 400 V, three-phase system, and the experimental analysis at steady-state and dynamic variations of load-side and insolation variations validate the theoretical claims. INDEX TERMS Multilevel inverter, SIMO-SEPIC, solar PV, power quality.

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“…The proposed converter requires 14 components, including two switches [25]. Several quadratic‐type DC–DC converters are reported in [26–30]. However, the DC‐voltage gain increases exponentially when the duty ratio increases beyond a 70% duty ratio.…”

Section: Introductionmentioning

confidence: 99%

“…Some of these converters utilise two or more switches [22]. The switch voltage stress is significantly higher in the converters reported in [3, 29, 30]. Certain applications require a converter with a fault ride‐through capability to produce the output voltage when there is a failure in the semiconductor switch.…”

Section: Introductionmentioning

confidence: 99%