| Summary: | 碩士 === 國立彰化師範大學 === 電機工程學系 === 100 === This thesis develops a universal digital three-phase inverter controller. The voltage space vector pulse width modulation (VSVPWM) and the voltage close-loop control are adapted in the developed controller. Voltage space vector voltage vector space is composed of eight basic voltage vectors, which included two zero space vectors and six non-zero space vectors. By these voltage vector spaces, pulse width modulation signals, which based on the relationship between the input voltage phase and voltage amplitude, are generated to drive the switches of the inverter. Therefore, output voltage regulation and frequency adjustment can be obtained, and improve the harmonic distortion and current consumption. The digital signal processor dsPIC30F4011 is used as the controller. In order to improve system reliability, voltage closed-loop control is also used to adjust the amplitude modulation factor to regulate the output three-phase AC voltage. Finally, a prototype is realized with different power modules. Experimental results show the output power up to 1kW and 10kW.
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