三相Vienna整流器無電壓感測線性非時變直接功率控制;A Linearized Time-Invariant Voltage-Sensorless Direct Power Control of Three-phase Vienna Rectifiers

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題名:	三相Vienna整流器無電壓感測線性非時變直接功率控制;A Linearized Time-Invariant Voltage-Sensorless Direct Power Control of Three-phase Vienna Rectifiers
作者:	許文瀚;Hsu, Wen-Han
貢獻者:	電機工程學系
關鍵詞:	Vienna整流器;無電壓感測;直接功率控制;zero crossing distortion補償;實虛功估測;Vienna rectifier;voltage sensorless;Direct Power Control;zero crossing distortion compensation;active and reactive power estimation
日期:	2022-09-06
上傳時間:	2022-10-04 12:10:38 (UTC+8)
出版者:	國立中央大學
摘要:	三相Vienna整流器有著高轉換效率，較低電路成本以及較低的開關電壓應力等優點，因此，三相Vienna整流器是一種被廣泛應用於車用充電以及工業用電的轉換器，本論文提出一種新型的無感測輸入電壓線性化直接功率控制架構應用於三相Vienna整流器電路，控制架構包含了三個子架構，分別為(1)線性非時變直接功率控制; (2)虛擬磁通與輸入實虛功估測; (3) zero crossing distortion及電容電壓不平衡補償以及單載波切換PWM。利用代數變換的方式將控制系統由線性時變系統轉換為線性非時變系統，使得控制器的設計得以簡化，在線性化直接功率控制的架構下，相較於傳統的電壓導向控制架構，本文所提的線性化直接功率控制方式有著較佳的動態響應，而在無感測線性非時變直接功率控制的架構下，本文結合虛擬磁通的估測觀念，設計輸入實功與虛功的估測器，達到無感測輸入電壓的直接功率控制，能夠減少感測器的使用。本文提出的兩種架構皆不須使用鎖相迴路，相較於傳統的電壓導向控制，本文所提的架構都能達到較低的輸入電流總諧波失真。 ;Three-phase Vienna rectifiers have the advantages of high conversion efficiency, low circuit cost and low voltage stress. Therefore, three-phase Vienna rectifier widely used in vehicle charging and industrial electricity. This paper presents a linearized time-invariant voltage-sensorless direct power control applied to the three-phase Vienna rectifier circuit. This control architecture consists of three sub architectures, including (1) the linear time-invariant direct power control, (2) virtual flux, input active power and virtual flux es-timator, (3) zero crossing distortion, capacitor voltage unbalance compensation and single carrier PWM. The proposed method transfers the system from linear time varying system to linear time invariant system by algebraic transformation, which makes the design of the controller more simple. Compared with the traditional voltage oriented control architecture, linearized time-invariant direct power control method has a better dynamic response. To achieve the direct power control without input voltage sensor, this article proposes sensorless control method, i.e. linearized time-invariant voltage-sensorless direct power control. Compared with the traditional voltage oriented control architecture, linearized time-invariant voltage-sensorless direct power control can reduce the system cost. The pro-posed direct power control method with and without sensor have lower input current total harmonic distortion than the voltage oriented control method, and does not require the use of phase locked loop circuit.
顯示於類別:	[電機工程研究所] 博碩士論文

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