Comparison of control strategies for squirrel-cage induction generator-based wind energy conversion systems

The squirrel cage induction generator will be a robust and low cost alternative to variable speed wind energy conversion systems. For this type of generator, direct torque control, direct stator-field-oriented control, direct rotor-field-oriented control, stator-flux slip control and rotor-flux slip...

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Autor principal: Azevedo, Ismael Alves de
Outros Autores: Barros, Luciano Sales
Formato: Dissertação
Idioma:pt_BR
Publicado em: Universidade Federal do Rio Grande do Norte
Assuntos:
Controle direto de torque
Controle de escorregamento de fluxo
Controle orientado pelo campo
Energia eólica
Gerador de indução em gaiola de esquilo
Endereço do item:https://repositorio.ufrn.br/handle/123456789/33303
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id ri-123456789-33303
record_format dspace
institution Repositório Institucional
collection RI - UFRN
language pt_BR
topic Controle direto de torque
Controle de escorregamento de fluxo
Controle orientado pelo campo
Energia eólica
Gerador de indução em gaiola de esquilo
spellingShingle Controle direto de torque
Controle de escorregamento de fluxo
Controle orientado pelo campo
Energia eólica
Gerador de indução em gaiola de esquilo
Azevedo, Ismael Alves de
Comparison of control strategies for squirrel-cage induction generator-based wind energy conversion systems
description The squirrel cage induction generator will be a robust and low cost alternative to variable speed wind energy conversion systems. For this type of generator, direct torque control, direct stator-field-oriented control, direct rotor-field-oriented control, stator-flux slip control and rotor-flux slip control can be used for maximum power point tracking. Stator-flux slip control and direct torque control have simple schemes with fast dynamic responses, since they do not have internal current controllers. However, stator-flux slip control presents high inrush-current and a poor dynamic response and direct torque control presents high torque ripples and poor performance at low speeds. On the other hand, rotor-flux slip control, direct stator-field-oriented control and direct rotor-field-oriented control have fast dynamic response, low inrush current and low error at maximum power point tracking, but have current controllers and offer a larger complexity in the control design. The objective of this work is to define the most suitable control strategy among direct torque control, direct stator-field-oriented control, direct rotor-field-oriented control, stator-flux slip control and rotor-flux slip control by evaluating the following performance indexes simultaneously: maximum power point tracking, total harmonic distortion, inrush current and dynamic response. Simulations are performed in order to analyze the performance of the control strategies. In this work, tests were carried out for the five control strategies and the direct rotorfield-oriented control presented the best trade off considering maximum power point tracking, total harmonic distortion and dynamic performance, despite it does not have the best inrush current. Tests of three-phase short circuit and rejection of load were also carried out and the results suggest that the machine-side control is not affected significantly.
author2 Barros, Luciano Sales
author_facet Barros, Luciano Sales
Azevedo, Ismael Alves de
format masterThesis
author Azevedo, Ismael Alves de
author_sort Azevedo, Ismael Alves de
title Comparison of control strategies for squirrel-cage induction generator-based wind energy conversion systems
title_short Comparison of control strategies for squirrel-cage induction generator-based wind energy conversion systems
title_full Comparison of control strategies for squirrel-cage induction generator-based wind energy conversion systems
title_fullStr Comparison of control strategies for squirrel-cage induction generator-based wind energy conversion systems
title_full_unstemmed Comparison of control strategies for squirrel-cage induction generator-based wind energy conversion systems
title_sort comparison of control strategies for squirrel-cage induction generator-based wind energy conversion systems
publisher Universidade Federal do Rio Grande do Norte
publishDate 2021
url https://repositorio.ufrn.br/handle/123456789/33303
work_keys_str_mv AT azevedoismaelalvesde comparisonofcontrolstrategiesforsquirrelcageinductiongeneratorbasedwindenergyconversionsystems
_version_ 1773962010323582976
spelling ri-123456789-333032022-05-02T15:32:07Z Comparison of control strategies for squirrel-cage induction generator-based wind energy conversion systems Azevedo, Ismael Alves de Barros, Luciano Sales http://lattes.cnpq.br/2119925235394087 http://lattes.cnpq.br/5175817442792763 Salazar, Andres Ortiz http://lattes.cnpq.br/7865065553087432 Barbosa, Daniel http://lattes.cnpq.br/7843695359589199 Controle direto de torque Controle de escorregamento de fluxo Controle orientado pelo campo Energia eólica Gerador de indução em gaiola de esquilo The squirrel cage induction generator will be a robust and low cost alternative to variable speed wind energy conversion systems. For this type of generator, direct torque control, direct stator-field-oriented control, direct rotor-field-oriented control, stator-flux slip control and rotor-flux slip control can be used for maximum power point tracking. Stator-flux slip control and direct torque control have simple schemes with fast dynamic responses, since they do not have internal current controllers. However, stator-flux slip control presents high inrush-current and a poor dynamic response and direct torque control presents high torque ripples and poor performance at low speeds. On the other hand, rotor-flux slip control, direct stator-field-oriented control and direct rotor-field-oriented control have fast dynamic response, low inrush current and low error at maximum power point tracking, but have current controllers and offer a larger complexity in the control design. The objective of this work is to define the most suitable control strategy among direct torque control, direct stator-field-oriented control, direct rotor-field-oriented control, stator-flux slip control and rotor-flux slip control by evaluating the following performance indexes simultaneously: maximum power point tracking, total harmonic distortion, inrush current and dynamic response. Simulations are performed in order to analyze the performance of the control strategies. In this work, tests were carried out for the five control strategies and the direct rotorfield-oriented control presented the best trade off considering maximum power point tracking, total harmonic distortion and dynamic performance, despite it does not have the best inrush current. Tests of three-phase short circuit and rejection of load were also carried out and the results suggest that the machine-side control is not affected significantly. O gerador de indução em gaiola de esquilo será uma alternativa robusta e de baixo custo para sistemas de conversão de energia eólica com velocidade variável. Para este tipo de gerador, o controle direto de torque, o controle orientado pelo campo estatórico, o controle orientado pelo campo rotórico, o controle de escorregamento do fluxo estatórico e o controle de escorregamento do fluxo rotórico podem ser utilizados para o rastreamento de ponto de máxima potência. O controle de escorregamento do fluxo estatórico e o controle direto de torque possuem esquemas simples com respostas dinâmicas rápidas, já que não possuem controladores internos de corrente. Entretanto, o controle de escorregamento do fluxo estatórico apresenta alta corrente de partida e baixa qualidade na resposta dinâmica e o controle direto de torque apresenta grande ripple no torque e baixa performance em baixas velocidades. Por outro lado, o controle de escorregamento do fluxo rotórico, o controle orientado pelo campo estatórico e o controle orientado pelo campo rotórico possuem rápida resposta dinâmica, baixa corrente de partida e baixo erro no rastreamento de ponto de máxima potência, mas possuem controladores de corrente e oferecem uma maior complexidade no projeto de controle. O objetivo deste trabalho é definir a estratégia de controle mais adequada entre o controle direto de torque, o controle orientado pelo campo estatórico, o controle orientado pelo campo rotórico, o controle de escorregamento do fluxo estatórico e o controle de escorregamento do fluxo rotórico mediante a avaliação dos seguintes índices de desempenho simultaneamente: rastreamento de ponto de máxima potência, distorção harmônica total, corrente de partida e resposta dinâmica. São realizadas simulações a fim de analisar o desempenho das estratégias de controle. Neste trabalho, testes foram realizados com as cinco estratégias de controle e o controle orientado pelo campo rotórico apresentou melhor rastreamento de ponto de máxima potência, distorção harmônica total e resposta dinâmica, apesar de não apresentar melhor corrente de partida. Testes de curto-circuito trifásico e rejeição de carga também são realizados e os resultados obtidos sugerem que o controle do lado da máquina não é afetado significativamente. 2021-09-08T17:42:30Z 2021-09-08T17:42:30Z 2021-07-05 masterThesis AZEVEDO, Ismael Alves de. Comparison of control strategies for squirrel-cage induction generator-based wind energy conversion systems. 2021. 118f. Dissertação (Mestrado em Engenharia Elétrica e de Computação) - Centro de Tecnologia, Universidade Federal do Rio Grande do Norte, Natal, 2021. https://repositorio.ufrn.br/handle/123456789/33303 pt_BR Acesso Aberto application/pdf Universidade Federal do Rio Grande do Norte Brasil UFRN PROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA ELÉTRICA E DE COMPUTAÇÃO

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