• 作者： 榮世良; 黃湘松; 張盟岳; 鄒應嶼
• 作者服務機構： 國立交通大學控制工程學系電力電子及運動控制實驗室
• 中文摘要： 本文提出應用於UPS脈寬調變換流器(PWM inverter)之全數位式多迴路控制架構。此一架構採用電壓外迴路配合電流內迴路對脈寬調變換流器之輸出電壓進行調節。本文在電流內迴路中加入輸出電壓補償迴路，使電流控制器得以免除交流輸出電壓的抗拒干擾。此外，本文亦在電壓外迴路中利用負載電流回授來抵消因負載變動所造成的輸出電壓擾動。控制器之設計係根據正中控制理論(deadbeat control theory)，期使系統具有快速的暫態響應，而受控系統的時域與頻域特性在文中亦有詳細說明。最後，本文建構以數位訊號處理器TMS320C14為基礎之脈寬調變換流器數位控制系統來進行實測驗證。模擬與實驗結果顯示，系統的輸出電壓具有低穩態誤差及快速反應的優點，而電壓失真度亦能符合工業標準。
• 英文摘要： This paper presents a fully digital multiple-loop control scheme for the regulation of PWM invertersused in uninterruptible power supplies (UPS). The proposed digital control scheme incorporates an outervoltage loop with an inner current loop to regulate the output voltage of the PWM inverter. The digitalcontroller is designed using deadbeat theory so that the inverter can achieve fast dynamic response. Toenhance the robustness of the PWM inverter, an output voltage decoupling mechanism is proposed toimprove the performance of the inner current loop. Furthermore, a load disturbance compensation schemeis also developed to remedy the voltage distortion caused by load variation. Both the frequency-domainand time-domain behavior of the proposed control scheme are examined in this paper. A PWM invertercontrol system based on DSP TMS320C14 was constructed to verify the designed control law. Thesimulation and experimental results show that the output voltage of the controlled PWM inverter has littledistortion even under rough load conditions.
• 中文關鍵字： digital multiple-loop control; PWM inverter; UPS; deadbeat theory; DSP
• 英文關鍵字： --