Publication

A Five-Level NPC Photovoltaic Inverter with an Actively Balanced Capacitive Voltage Divider

Alfred Rufer
2015
Conference Papers

Abstract

A new five-level photovoltaic Inverter is presented, implemented by associating a Multistage Stacked Boost Architecture (MSBA) with a 5-level NPC inverter. Ahead of the MSBA conversion stage, a conventional boost converter allows the operation of the PV cells with a variable voltage using a maximum power point tracking strategy (MPPT). The paper describes a robust voltage balancing principle for the MSBA-stage, which includes local feed-forward for the current control references of each balancing modules. The feed-forward signals are estimated from the inverter output current, with the help of the switching signals of the 5-level inverter. Simulation results are presented, as well as first experimental results.

Official source

https://infoscience.epfl.ch/entities/publication/352fa202-dcb8-449f-8778-f9f16df42741

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Alfred Rufer
2015
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/352fa202-dcb8-449f-8778-f9f16df42741

About this result

Ontological neighbourhood

Energy engineering

Solar power: Topics in solar power

Related concepts (28)

Power inverter

A power inverter, inverter or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). The resulting AC frequency obtained depends on the particular device employed. Inverters do the opposite of rectifiers which were originally large electromechanical devices converting AC to DC. The input voltage, output voltage and frequency, and overall power handling depend on the design of the specific device or circuitry. The inverter does not produce any power; the power is provided by the DC source.

Solar panel

A solar panel is a device that converts sunlight into electricity by using photovoltaic (PV) cells. PV cells are made of materials that generate electrons when exposed to light. The electrons flow through a circuit and produce direct current (DC) electricity, which can be used to power various devices or be stored in batteries. Solar panels are also known as solar cell panels, solar electric panels, or PV modules. Solar panels are usually arranged in groups called arrays or systems.

Solar cell

A solar cell, or photovoltaic cell, is an electronic device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical phenomenon. It is a form of photoelectric cell, defined as a device whose electrical characteristics, such as current, voltage, or resistance, vary when exposed to light. Individual solar cell devices are often the electrical building blocks of photovoltaic modules, known colloquially as solar panels.

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