Transformerless cascaded inverter topology for photovoltaic applications

Kavidha, B.; Rajambal, K.

doi:10.1109/iicpe.2006.4685391

Cited by 7 publications

(4 citation statements)

References 7 publications

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“…Modules are bigger units that may be formed by grouping together cells, are then used to create panels or arrays [3]. That are arranged in seriesparallel connections and gives voltage ranging 12 to 48 V [4]. A PV module's output properties are influenced by radiation from the sun, temperature of a cell, and the voltage output to the PV module [5].…”

Section: Introductionmentioning

confidence: 99%

Comparison between boost and positive output super lift Luo converters to improve the performance of photovoltaic system

2022

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Employment DC-DC switching power converters in many different areas become is very important. In this paper, three different models of the photovoltaic solar module were proposed in order to designing, implementation, and simulated them in MATLAB/Simulink with the boost converter circuit first and then with the positive output super lift Luo (POSLL) converter circuit again. A comparison was made between the two circuits, as well as a theoretical and simulation values were made and compared between them (in the same standard conditions) for each of these selected models. So as to improving solar system performance and clarify the functions played by POSLL in power electronic circuits.

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Section: Introductionmentioning

confidence: 99%

Comparison between boost and positive output super lift Luo converters to improve the performance of photovoltaic system

2022

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“…Using multilevel inverter (MLI) topologies as an interface has many advantages [2], [3]. Moreover, MLI topologies can provide direct connection to medium voltage networks without the need of coupling transformers [4]- [6], which in turn eliminates the transformer's losses, weight and size. The three main MLI topologies are: the cascaded MLI [3], [7], diode-clamped MLI [3], [8], and flying capacitor MLI [3].…”

Section: Introductionmentioning

confidence: 99%

“…The cascaded MLI has many advantages compared to other topologies, in addition to having the least number of component devices per output voltage level [9], it also provides simplicity and modularity of control. Since the cascaded MLI requires isolated DC sources, it is suitable for photovoltaic applications [4], [5], [10], fuel cell applications [11], and batteries. The used modulation techniques for the MLIs are Multi Carrier Pulse Width Modulation (MCPWM) techniques, a comparison between different modulation techniques for the cascaded inverters is carried out in [12] and [13], where it is concluded in [13] that the Phase Disposition PWM (PDPWM) offers the lowest THD for the output voltage, although the comparison did not include the effect of the carrier frequency on the output voltage waveform.…”

Section: Introductionmentioning

confidence: 99%

Multilevel inverter interface of distributed generation sources for medium voltage distribution networks

Eltantawy

El-Saadany

Salama

2011

2011 24th Canadian Conference on Electrical and Computer Engineering(CCECE)

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This paper presents a distributed generation interface based on cascaded multilevel inverter topology for medium voltage distribution networks. The interface enables the elimination of the needed transformer for coupling to the medium voltage network, which reduces the losses, size and weight of the DG unit. Also, different PWM modulation techniques are compared for the cascaded MLI, the comparison is based on the THD of the output voltage taking into consideration the effect of the carrier frequency. A decoupled control system is presented with the ability to operate the DG with unity power factor, constant power factor, or constant voltage. The system performance is simulated using PSCAD/EMTDC. It is shown that the DG with the constant voltage operation mode can be employed to improve the power quality at the point of common coupling (PCC).

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“…The DC source in the inverter comes from the PV arrays, and the switching signals come from the multicarrier sinusoidal pulse width modulation (SPWM) controller. The 11-level inverter connects five H-bridges in series and is controlled by five sets of different SPWM signals to generate a near sinusoidal waveform [9][10][11].…”

Section: Multilevel Inverter and Pv Interfacementioning

confidence: 99%