Estimation of Synchronous Motor Air-Gap Torque in DOL Start-Up Operation from Manufacturer Data Sheet Parameters

Bongini, Lorenzo; Mastromauro, Rosa Anna; Sgro, Daniele; Frattoni, Michele; Meucci, Francesco

doi:10.23919/epe.2019.8914984

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…In order to simplify, the torsional study of the TG shaft, (2) is expressed through modal analysis. Considering the coordinate transformation expressed in (3), the modal approach [23][24][25][26] allows obtaining a system of uncoupled equations. It results in:…”

Section: Electromechanical Torque Variation and Electrical Dampingmentioning

confidence: 99%

Phase-Controlled Thyristor Sub-Synchronous Damper Converter for a Liquefied Natural Gas Plant

Bongini

Mastromauro

Sgro³

et al. 2021

Energies

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In electrified liquefied natural gas (LNG) plants variable frequency drives (VFDs) interact with turbine-generator (TG) units creating torsional vibrations known as sub-synchronous torsional interactions (SSTIs). Torsional vibrations can be dangerous for an LNG plant when they involve torsional instability. The stability of an LNG plant depends on the plant configuration and on the number of TG units and of VFDs. In such peculiar configurations stability cannot be achieved acting of the VFDs control system. Alternatively, dedicated equipment is needed to damp the torsional vibrations. In this paper, a sub-synchronous damper (SSD) converter is used to mitigate the SSTI phenomena. The SSD converter consists of a thyristor H-bridge regulating the phase of the additional torque provided at the TG unit air-gap. A phase control system is proposed and is based on the torsional torque oscillations measurement. An adaptive reference signal is employed, also guaranteeing high performance in island-mode operation. The proposed solution increases the damping of the LNG plant in all the considered configurations. The LNG plant successful operation is validated by comprehensive results.

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Section: Electromechanical Torque Variation and Electrical Dampingmentioning

confidence: 99%

Phase-Controlled Thyristor Sub-Synchronous Damper Converter for a Liquefied Natural Gas Plant

Bongini

Mastromauro

Sgro³

et al. 2021

Energies

Self Cite

View full text Add to dashboard Cite

show abstract

A Current Phase Controlled Sub-Synchronous Damper Converter for Liquefied Natural Gas Plants Applications

Bongini

Mastromauro

Sgro³

et al. 2021

2021 IEEE 15th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)

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Estimation of Synchronous Motor Air-Gap Torque in DOL Start-Up Operation from Manufacturer Data Sheet Parameters

Cited by 2 publications

References 11 publications

Phase-Controlled Thyristor Sub-Synchronous Damper Converter for a Liquefied Natural Gas Plant

Phase-Controlled Thyristor Sub-Synchronous Damper Converter for a Liquefied Natural Gas Plant

A Current Phase Controlled Sub-Synchronous Damper Converter for Liquefied Natural Gas Plants Applications

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