A transformerless single-phase PV inverter circuit for thin-film or back-side contacted solar modules

Gommeringer, Mario; Kammerer, Felix; Schmitt, Alexander; Braun, Michael

doi:10.1109/iecon.2014.7048647

Cited by 23 publications

(18 citation statements)

References 4 publications

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“…3 (see also [5][6][7]). The charging current i L2 is switched off by the diode D9 at a value of zero.…”

Section: Function Of the Circuitmentioning

confidence: 99%

“…The inverter section on the right side of Fig. 1 is built up with the transistors T3-T7 and is similar to the single string topology of [5][6][7]. The positive poles of the solar generator can be connected to N if all power semiconductors are connected in opposite direction.…”

Section: Function Of the Circuitmentioning

confidence: 99%

“…Fig. 2 shows the switching states of the inverter section, which are chosen by a pulse with modulation (see also [5][6][7]). During the positive half-wave, the switching states 1 and 3a Fig.…”

Section: Function Of the Circuitmentioning

confidence: 99%

“…2: Switching states (see also [5][6][7]) are used alternately. This operation mode is similar to a buck converter.…”

Section: Function Of the Circuitmentioning

confidence: 99%

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A multi-string photovoltaic inverter for thin-film or back-side contacted solar modules

Gommeringer

Schmitt

Braun

2016

8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016)

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Photovoltaic inverters are widely used to feed solar generated power into the public grid. Inverter topologies have to be carefully chosen, depending on the type and on the power of the solar generator. A new transformerless, three-level photovoltaic inverter circuit for multiple strings is investigated in this paper. It allows an individual MPP tracking of each string without needing a full scale boost converter for each input. Furthermore, either the positive poles or the negative poles of the strings can be connected to the neutral conductor N. Therefore, the topology is especially suited for thin-film or back-side contacted solar modules.

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“…3 (see also [5][6][7]). The charging current i L2 is switched off by the diode D9 at a value of zero.…”

Section: Function Of the Circuitmentioning

confidence: 99%

Section: Function Of the Circuitmentioning

confidence: 99%

Section: Function Of the Circuitmentioning

confidence: 99%

“…2: Switching states (see also [5][6][7]) are used alternately. This operation mode is similar to a buck converter.…”

Section: Function Of the Circuitmentioning

confidence: 99%

See 2 more Smart Citations

A multi-string photovoltaic inverter for thin-film or back-side contacted solar modules

Gommeringer

Schmitt

Braun

2016

8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016)

View full text Add to dashboard Cite

show abstract

“…Single input inverters are designed to have only one DC input port, and for such inverters to work properly, the value of the DC voltage applied must be at a fixed nominal value [1], [2]. In renewable applications where there are two or more sources of DC energy, a number of these single input inverters can be used to generate an AC output voltage from the DC sources.…”

Section: Power Invertersmentioning

confidence: 99%

Development of a Microcontroller-Based 6/12/18/24V Power Inverter Circuit

Ogunseye

Johnson

2017

JCTECS

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Abstract-A power inverter circuits is normally designed to meet its design specifications when the applied input DC voltage is within specified tolerance limits. Thus, single input inverters are usually specified to work from a DC source having a fixed nominal voltage. This limits the usefulness of the inverter circuit when a DC source having the specified nominal voltage is not available. In this work, a modified square wave inverter system that is specified to work properly from batteries with nominal voltages of 6, 12, 18 and 24 V was designed. A model of the microcontroller-based circuit was developed with Proteus® software and its firmware was written in C language using the MicroC® development tool. A prototype of the circuit was constructed and then tested. The constructed circuit was found to work properly by producing a 50 Hz modified square waveform when it was powered from batteries having nominal voltages of 6 V, 12 V, 18 V and 24 V.

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A triple boost 13‐level switched‐capacitor based multi‐level inverter topology for solar PV applications

Wasiq

Siddique

Sarwar

et al. 2022

Circuit Theory & Apps

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A High Gain High‐Level switched‐capacitor multilevel inverter with low voltage stress requires a lower number of devices at peak output voltage and a reduced number of circuit components along with an increase in voltage boosting capability. The features of the proposed topology include inherent boosting (Gain: 3) and self‐voltage balancing properties. To avoid complex algorithms, calculations and obtain superior quality output voltage the nearest level control (NLC) modulation technique is used. The extension of the topology has also been derived for the higher voltage gain and levels by adding four switches and one capacitor. The proposed topology has been compared with the recently developed topologies. The power loss analysis and simulation analysis has been done with different loading conditions under the environment of PLECS 4.2.18 and MATLAB® 2018a, respectively. A hardware bench has been set up to show the verification of the simulation results with hardware results.

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A transformerless single-phase PV inverter circuit for thin-film or back-side contacted solar modules

Cited by 23 publications

References 4 publications

A multi-string photovoltaic inverter for thin-film or back-side contacted solar modules

A multi-string photovoltaic inverter for thin-film or back-side contacted solar modules

Development of a Microcontroller-Based 6/12/18/24V Power Inverter Circuit

A triple boost 13‐level switched‐capacitor based multi‐level inverter topology for solar PV applications

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