Dual 3-Phase Bridge Multilevel Inverters for AC Drives with Voltage Sag Ride-through Capability

One of the main power quality issues that can affect variable speed drives (VSDs) is the occurrence of voltage sags on their AC power supply. Voltage sags can affect the inverter nominal operation, leading to a malfunction of the AC motor. This paper presents an inverter with resilient capability to...

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Main Authors: Vitor Fernão Pires, Joaquim Monteiro, José Fernando Silva
Format: Article
Language:English
Published: MDPI AG 2019-06-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/12/12/2324
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author Vitor Fernão Pires
Joaquim Monteiro
José Fernando Silva
author_facet Vitor Fernão Pires
Joaquim Monteiro
José Fernando Silva
author_sort Vitor Fernão Pires
collection DOAJ
description One of the main power quality issues that can affect variable speed drives (VSDs) is the occurrence of voltage sags on their AC power supply. Voltage sags can affect the inverter nominal operation, leading to a malfunction of the AC motor. This paper presents an inverter with resilient capability to voltage sags. The topology consists of two conventional three-phase bridge inverters arranged to require just a single DC source. This inverter is also characterized by a voltage multilevel operation, providing the full advantages of multilevel converters without the need for level balancing. Associated with this AC motor driver, a control system based on a field-oriented controller with a vector voltage modulator that will enable voltage sag ride-through capability is proposed. The proposed control system does not require any changes in the occurrence of voltage sags. To verify the characteristics of the proposed drive and control system, simulation tests are provided. Simulation results confirm the voltage sag resilient capability of the proposed multilevel converter.
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spelling doaj.art-c8d05f3b7d00410d990b6d6743c02fed2022-12-22T03:19:26ZengMDPI AGEnergies1996-10732019-06-011212232410.3390/en12122324en12122324Dual 3-Phase Bridge Multilevel Inverters for AC Drives with Voltage Sag Ride-through CapabilityVitor Fernão Pires0Joaquim Monteiro1José Fernando Silva2SustainRD, EST Setubal, Polytechnic Institute of Setúbal, 2914-761 Setúbal, PortugalINESC-ID, 1000-029 Lisboa, PortugalINESC-ID, 1000-029 Lisboa, PortugalOne of the main power quality issues that can affect variable speed drives (VSDs) is the occurrence of voltage sags on their AC power supply. Voltage sags can affect the inverter nominal operation, leading to a malfunction of the AC motor. This paper presents an inverter with resilient capability to voltage sags. The topology consists of two conventional three-phase bridge inverters arranged to require just a single DC source. This inverter is also characterized by a voltage multilevel operation, providing the full advantages of multilevel converters without the need for level balancing. Associated with this AC motor driver, a control system based on a field-oriented controller with a vector voltage modulator that will enable voltage sag ride-through capability is proposed. The proposed control system does not require any changes in the occurrence of voltage sags. To verify the characteristics of the proposed drive and control system, simulation tests are provided. Simulation results confirm the voltage sag resilient capability of the proposed multilevel converter.https://www.mdpi.com/1996-1073/12/12/2324AC drivemultilevel invertervoltage sag ride-throughdual inverterfloating capacitor
spellingShingle Vitor Fernão Pires
Joaquim Monteiro
José Fernando Silva
Dual 3-Phase Bridge Multilevel Inverters for AC Drives with Voltage Sag Ride-through Capability
Energies
AC drive
multilevel inverter
voltage sag ride-through
dual inverter
floating capacitor
title Dual 3-Phase Bridge Multilevel Inverters for AC Drives with Voltage Sag Ride-through Capability
title_full Dual 3-Phase Bridge Multilevel Inverters for AC Drives with Voltage Sag Ride-through Capability
title_fullStr Dual 3-Phase Bridge Multilevel Inverters for AC Drives with Voltage Sag Ride-through Capability
title_full_unstemmed Dual 3-Phase Bridge Multilevel Inverters for AC Drives with Voltage Sag Ride-through Capability
title_short Dual 3-Phase Bridge Multilevel Inverters for AC Drives with Voltage Sag Ride-through Capability
title_sort dual 3 phase bridge multilevel inverters for ac drives with voltage sag ride through capability
topic AC drive
multilevel inverter
voltage sag ride-through
dual inverter
floating capacitor
url https://www.mdpi.com/1996-1073/12/12/2324
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