Implementation of an Asymmetric Two-Phase Switching Space Vector Pulse-Width Modulator

• Main Authors: SYU,WEI-SYUAN, 徐偉軒
• Other Authors: Ming-Fa Tsai
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/10384016917511540121

碩士 === 明新科技大學 === 電機工程系碩士班 === 104 === Abstract This thesis makes an improved type motor-drive SVPWM modulator, By using two-phase switching, one can not only let the inverter reduce switching loss of 33%, but also update voltage space vector command signal in the half period of the PWM switching time inteval. So one can design current feedback closed-loop vector control to increase sampling frequency and bandwidth for twice times, allowing motor drive system with better dynamic response. In this thesis, the asymmetric two-phase switching SVPWM scheme uses Cblock in PSIM. A digital controller with the eZdsp TMS320F28335 and C programming language are used to drive a 300W PMSM Motors (7CB30-2DE7F). It was also verified the correctness by the close-loop motor drive with asymmetric two-phase switching SVPWM scheme. Keywords: asymmetric two-phase SVPWM、motor driving circuit.