Hybrid AC Power Source Based on Modular Multilevel Converter and Linear Amplifier

This paper presents a hybrid amplifier for an ac power source (ACPS). The topology is composed of a modular multilevel converter (MMC), operating as main amplifier, connected in series with a linear power amplifier (LPA), which operates as correction amplifier. This way, it is possible to gather the...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on power electronics 2015-01, Vol.30 (1), p.216-226
Main Authors: da Silva, Guilherme Sebastiao, Concatto Beltrame, Rafael, Schuch, Luciano, Rech, Cassiano
Format: Article
Language:English
Subjects:
Amplifiers
Capacitors
Control systems
Electric currents
Electric potential
Hybrid ac power source (ACPS)
Inductors
Low-pass filters
Metal matrix composites
Modular
modular multilevel converter (MMC)
Multilevel
Power amplifiers
Power supply
Receivers & amplifiers
series configuration
Topology
Voltage
Voltage control
Waveforms
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper presents a hybrid amplifier for an ac power source (ACPS). The topology is composed of a modular multilevel converter (MMC), operating as main amplifier, connected in series with a linear power amplifier (LPA), which operates as correction amplifier. This way, it is possible to gather the modularity, reliability, and high efficiency provided by the MMC and the high waveform fidelity provided by the LPA. Additionally, it is possible to reproduce a voltage waveform with a high bandwidth and, differently from previous works, with a topology that requires a unique dc voltage source for the main amplifier. The inner current and the submodule capacitor voltages are controlled in the MMC. Meanwhile, the LPA is controlled to define the output voltage. A design methodology and experimental results are included to demonstrate the operation of the ACPS topology.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2014.2310174