Robust Field-weakening Operation of Sensorless Direct Torque and Flux Controlled Flywheel Energy Storage in Wide Speed Range

Research output: Chapter in Book/Conference paperConference paperpeer-review

Abstract

Flywheel energy storage system (FESS) becomes increasingly popular in dynamic uninterruptable power supplies (UPSs) and smart grids. In order to fully explore the advantageous features of FESS, fast dynamic response and wide speed range operation are required. Nonetheless, most of the existing control approaches for FESS are heavily dependent on machine parameters, indicating poor control robustness in wide speed range. Moreover, many of these approaches are based on field-oriented control (FOC) that requires knowledge of accurate rotor position. This increases the difficulty of realizing the reliable sensorless drives for FESS. To solve the above problems, this paper proposes a robust field-weakening method for sensorless direct torque and flux controlled FESS. It contributes to achieve smooth sensorless operation by employing direct torque and flux control. Moreover, it ensures the robust drives of FESS in full speed range with the presence of parameter variations. Performance of the proposed method is verified by simulations.

Original languageEnglish
Title of host publication2019 9th International Conference on Power and Energy Systems, ICPES 2019
PublisherIEEE, Institute of Electrical and Electronics Engineers
ISBN (Electronic)9781728126586
DOIs
Publication statusPublished - Dec 2019
Event9th International Conference on Power and Energy Systems, ICPES 2019 - Perth, Australia
Duration: 10 Dec 201912 Dec 2019

Publication series

Name2019 9th International Conference on Power and Energy Systems, ICPES 2019

Conference

Conference9th International Conference on Power and Energy Systems, ICPES 2019
Country/TerritoryAustralia
CityPerth
Period10/12/1912/12/19

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