A study on indirect current control of three phase converter with unity power factor

• Main Authors: Hsiao-Ping Chi, 齊孝平
• Other Authors: Ching-Lien Huang Hui-Yung Chu
• Format: Others
• Language: zh-TW
• Published: 1993
• Online Access: http://ndltd.ncl.edu.tw/handle/54074645036558003792

碩士 === 國立成功大學 === 電機工程研究所 === 81 === For a PWM ac-to-dc converter, an indirect current control strategy is proposed. It is capable of :(1) unity and even leading or lagging power factor, (2) nearly sinusoidal current waveform, (3) bilateral power transfer, and (4) saving the cost of the current transducer.However, there are two disadvantages as follows:(1)the series resistance and the DC filter capacitor in the line will affect the system dynamic stability, and (2) mutual inductance of three-phase inductor will result in the error of the constant and thereby cause the phase shift of the input current. This thesis proposes some strategies to improve the above shortages. The results of the simulation and the experiment both show the correctness of the proposed strategies .