| Summary: | 碩士 === 國立虎尾科技大學 === 電機工程研究所 === 99 === In this thesis a novel high efficiency inverter for three-phase induction motor is proposed. The proposed drive consists of DC/DC Buck converter and three-phase inverter. To maintain amplitude of motor current, hysteresis current control and space vector are adopted. Besides, the frequency of inverter output current also can be adjusted by output voltage of DC/DC Buck converter. Therefore, the proposed drive has lower switching loss, higher efficiency and better dynamic response.The constant stator current is used to control motor speed in closed loop control, completion of induction motor speed to keep const
For fully digital control, TI DSP TMS320F28335 and Vissim development software are adopted to implement the control circuit. Hence, thr control circuit becomes more flexible and more small size. Finally, some experiment results are presented to verify the feasibility of the proposed motor drive.
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