本論文提出以數位訊號處理器(Digital Signal Processor, DSP)實現電壓頻率轉換系統，其系統之控制核心係利用數位方式完成變頻控制器。相較於類比電路控制方式，以DSP控制方式可簡化控制電路，加速系統研製時程。
本文所採用之雙級式系統電路架構，係由前級之功率因數修正電路及後級之全橋式換流器所構成。其中，前級功率因數修正電路除可調節輸入交流電流，以獲致高輸入功率因數，並提供後級換流器穩定之直流匯流排電壓；而後級全橋式換流器係藉由數位訊號處理器，控制變頻電壓輸出。最後，研製一輸出電壓頻率50~400 Hz之雛型系統，以實驗結果驗證變頻控制之相關性能。

This thesis has proposed a voltage frequency conversion system with digital signal processor (DSP).The digital control is used in system kernel controller to achieve the variable frequency control. The DSP control can simplify control circuit to reduce development time as compared with analog circuit control.
The topology of the propose system is two stage converter, where the front stage is a power factor correction circuit and the rear stage is a single-phase full-bridge inverter circuit. Besides, the power factor correction can control input AC voltage to achieve high input power factor, and supply a regulated DC bus voltage for the full-bridge inverter. The variable frequency can be controlled in the full-bridge inverter of the output voltage by using the DSP. Finally, a prototype system with output frequency varied from 50 to 400Hz is designed and implemented. The experimental results validate the advantages of the proposed variable frequency control.

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