| Summary: | 碩士 === 國立成功大學 === 電機工程學系碩博士班 === 97 === 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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