Direct Control Strategy for a Four-Level Three-Phase Flying-Capacitor Inverter

A direct predictive control strategy is proposed for a three-phase four-level flying-capacitor (FC) inverter in this paper. The balancing of the FC voltages, a challenge in applications with small capacitors and low switching frequencies, is done without any modulation, simply using tables calculate...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2010-07, Vol.57 (7), p.2240-2248
Main Authors: Defay, François, Llor, Ana-Maria, Fadel, Maurice
Format: Article
Language:English
Subjects:
Active filters
Active power filter
Automatic
Capacitors
direct control
Electric potential
Electric power
Engineering Sciences
flying-capacitor (FC) inverter
Inverters
Mathematical analysis
Modulation
Predictive control
Sampling methods
Strategy
Stress
Switches
Switching
Switching converters
Switching frequency
Tables
Voltage
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:A direct predictive control strategy is proposed for a three-phase four-level flying-capacitor (FC) inverter in this paper. The balancing of the FC voltages, a challenge in applications with small capacitors and low switching frequencies, is done without any modulation, simply using tables calculated offline. These allow the realization of fast-dynamics output currents with reduced dv / dt in the output voltages and reduced switching frequencies. Moreover, no interharmonics are created when operating at low switching frequencies and with reference currents containing multiple harmonic components, which is a key feature for active power filters. Simulations and experimental results are presented to demonstrate the excellent performance of the direct control strategy in comparison with a conventional pulsewidth-modulation control technique, mostly for operation at low switching frequencies.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2009.2039457