本論文旨在研製三相功率因數修正器，主要目的是利用開關控制輸入電流，使輸出負載端趨近於純電阻式負載，使得輸入端以最有效率的方式傳遞能量到負載端，具改善電力電子系統的功率因數、提高能源利用等優點，可應用於電動車充電樁。本文架構使用三相六開關升壓型整流器，採用空間向量脈波寬度調變法控制開關。透過PSIM模擬數位控制，藉以驗證實際的狀況。而在實做的方面，數位信號則是使用TMS320F280049數位控制處理器為控制核心。電路選用具有低閘極電荷量、低導通電阻、極低的反向恢復電荷、高導熱係數等優點之碳化矽半橋模組作為功率開關元件最終本文實現一輸入線對線交流電壓380 V、輸出直流電壓800 V、切換頻率操作在50 kHz、額定功率為50 kW之三相功率因數修正器。

This thesis is to study and implement a three-phase power factor corrector. The main purpose is to use the switch to control the input current so that the output load end is close to pure resistive so that the input end transmits energy to the load end in the most efficient way, which has the advantage of improving the power factor of the power electronic system and improving energy utilization, can be used in electric vehicle charging piles, uninterruptible power systems, etc. The architecture of this thesis is a three-phase six-switch boost rectifier and uses the space vector pulse width modulation method to control the switch. The digital control is simulated through the PSIM simulation software to verify the actual situation. In terms of implementation, the digital signal uses the TMS320F280049 digital control processor as the control core. The circuit uses a silicon carbide half-bridge module with the advantages of low gate charge, low on-resistance, extremely low reverse recovery charge, and high thermal conductivity as the power switching element. Finally, this paper realizes an input line-to-line AC voltage of 380 V, a three-phase power factor corrector with an output DC voltage of 800 V, a switching frequency of 50 kHz, and a rated power of 50 kW.

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