本文旨在研製單相全橋式換流器並聯控制系統，負載為線性或非線性。文中提出二組換流器：第一組換流器採用電壓閉迴路控制，提供交流電壓至等效負載；第二組換流器則以電流閉迴路控制策略，提供負載所需之功率，以提高系統之功率容量。
本文以32位元數位信號處理器(DSP, TMS320F28069)為系統之控制核心，且回授電壓及電流，以軟體完成閉迴路控制，故可減少電路元件，提高系統可靠度。本系統以Matlab/Simulink模擬軟體進行分析，俾與實測結果相互比較。
輸出功率需求為1kW時，第一組換流器為電壓控制型，負載電壓及電流之實測結果分別為156V與13A；第二組換流器為電流控制型，電流峰值命令為6.5A時，第一組換流器輸出電流的峰值為6.5A、總諧波失真率為4.33%，此時第二組換流器之輸出電流的峰值及總諧波失真率分別為6.5A與4.2%，實測結果顯示輸出端等效負載的功率由二組換流器平均提供。模擬與分析結果印證了本文單相電壓源換流器並聯控制策略之可行性。

This thesis aims to develop parallel control strategy of two single-phase full-bridge inverters for linear or non-linear load. The first inverter operates in voltage closed-loop control, while the second inverter operates in current closed-loop control and thereby enhancing output power capacity.
In this thesis, the 32-bit digital signal processor, “TMS320F28069”, is used as the core of the controller for voltage as well as current closed-loop controls to reduce circuit components and enhance system reliability. In addition, Matlab/Simulink simulation is given to facilitate comparison with experimental results.
The experimental results indicate that, under 1kW resistive load, the output voltage and current of the first inverter operated in voltage closed-loop control are 156V and 13A, respectively. When the second inverter is operated in current closed-loop control with the peak current command of 6.5A, the output peak current and total harmonic distortion of the first inverter are 6.5A and 4.33%, respectively, while the corresponding values of the second inverter are 6.5A and 4.2%. This indicates that both inverters share the required output power equally. In short, the simulation and experimental results verify the feasibility of the proposed control strategy for parallel operation of single-phase voltage-source inverters.

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