考慮不平衡電源之三相整流器線性化直接 功率控制之研製;Development of Linearized Direct Power Control For Three-Phase Rectifiers Considering Unbalanced Input Voltages

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Title:	考慮不平衡電源之三相整流器線性化直接功率控制之研製;Development of Linearized Direct Power Control For Three-Phase Rectifiers Considering Unbalanced Input Voltages
Authors:	郭偉倫 Kuo, Wei-Lun
Contributors:	電機工程學系
Keywords:	三相整流器;自定義克拉克轉換;直接功率控制;滑模控制;不平衡電源;Three-Phase Rectifier;Direct Power Control;Custom Clarke Transformation;Sliding Mode Control;Unbalanced Power Supply
Date:	2023-10-16
Issue Date:	2024-09-19 18:00:26 (UTC+8)
Publisher:	國立中央大學
Abstract:	本論文提出一種自定義克拉克轉換運用於不平衡電源下之三相整流器線性化直接功率控制，改善不平衡電源所造成三相電流失真，並針對不平衡電源之直接功率控制方式進行討論。線性化直接功率控制是利用代數變換的方式將原先靜止框之功率內迴路由線性時變系統轉換為線性非時變系統，使控制器的設計得以簡化。其方式目前並未針對不平衡電源進行討論，本論文以此為著眼點開發新型自定義克拉克轉換。藉由使用者自行設定矩陣係數，以獲得不平衡電源下之靜止座標框電壓????與????，使其在不平衡電源時數學式也可成立，以此降低不平衡電源所帶來電流失真，並且結合滑模控制，使其加減載強健性能提高。最終透過所提方法經由模擬結果進行分析，與實作建置一台1.9kW 三相六開關整流器比較結果一致，驗證所提方法的有效和正確性。;This paper proposes a Custom Clarke Transformation applied to linearized direct power control of three-phase rectifiers under unbalanced power supplies to improve the three-phase current distortion caused by unbalanced three phase power source, and discusses the direct power control method of unbalanced three phase power source. Linearized direct power control uses algebraic transformation to convert the power inner loop of the original stationary frame from a linear time-varying system to a linear time-invariant system, which simplifies the design of controller. However, its approach is not currently discussed for unbalanced three phase power source, and this paper takes this as a focus to develop a novel Custom Clarke transformation. By setting the matrix coefficients by the user, the stationary coordinate frames ???? and ???? under the unbalanced three phase power source can be obtained, so that the mathematical formula can also be established when the unbalanced three phase power source is used, so as to reduce the current distortion caused by the unbalanced three phase power source, and combined with Sliding mode control improves the robust performance of Increase loading and decrease loading. Finally, the proposed methods are analyzed through simulation results and validated by implementing a 1.9kW three-phase six-switch rectifier, yielding consistent results. This verifies the validity of the proposed methods.
Appears in Collections:	[Graduate Institute of Electrical Engineering] Electronic Thesis & Dissertation

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