本文針對單相儲能逆變器動作原理及硬體架構設計進行詳細分析與探討，並基於單相儲能逆變器之架構提出狀態觀察器模型，以當前系統狀態及輸入調變因子(Modulation Index)取得下個週期之電容電流預測值，且僅需要偵測輸出交流電壓及直流輸入電壓，不需安裝額外電流感測器於交流電容，以達成無感測器預測控制。電壓迴圈以交流輸出電壓做為回授控制，並搭配數位化比例諧振控制器(Proportional Plus Resonant Compensator, PR)於電壓迴圈中做為電壓迴圈補償，電流迴圈則使用交流電容電流做為回授控制，同時結合前饋控制達到較低的交流電壓誤差。
本文研製一單相全橋儲能逆變器，其輸出額定功率為500W、直流鏈電壓為200V、開關切換頻率為20kHz、輸出電壓為交流110V，控制方面採取數位控制，本文採用德州儀器數位訊號處理器TMS320F280049C加以實現，並基於狀態觀察器模型達成閉迴路控制，完成高效率、低電壓誤差之單相儲能逆變器，並改善電壓穩態誤差控制。最後由實驗結果得知，於滿載時最高效率為94.3%、電壓總諧波失真（ total harmonic distortion, THD ）vTHD為2.4%，且透過控制器差異比較比例控制器之電壓誤差率為3.427%、比例諧振控制器電壓誤差率為0.145%。

This thesis provides a detailed analysis and discussion of the operating principles and hardware architecture design of a single-phase energy storage inverter. Based on the architecture of the single-phase energy storage inverter, a state observer model is proposed, which utilizes the current system state and the modulation index of the input voltage to obtain the predicted value of the capacitor current for the next cycle.
The proposed technique achieves sensorless predictive control without the need for additional current sensors on the AC capacitor, only requiring the detection of the output AC voltage and the DC input voltage.
In the proposed method, the voltage loop uses the output AC voltage as the feedback control target and is combined with a digital Proportional plus Resonant compensator (PR) for voltage loop compensation. The current loop utilizes the AC capacitor current as the feedback control target and incorporates feedforward control to achieve lower AC voltage errors.
A single-phase full-bridge energy storage inverter is developed in this study, with a rated output power of 500W, DC link voltage of 200V, switching frequency of 20kHz, and output voltage of AC 110V. Digital control is implemented using the Texas Instruments digital signal processor TMS320F280049C.
The closed-loop control is achieved based on the state observer model to realize high-efficiency, low-voltage error operation of the single-phase energy storage inverter and improve voltage stability control error. Experimental results indicate that the proposed system achieves a maximum efficiency of 94.3% and a vTHD of 2.4% under full load conditions.
In the comparison of controllers, the voltage error rate for the proportional controller is 3.427 %, while the voltage error rate for the proportional plus resonant compensator is 0.145 %.

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