A Low Current Fluctuation Switching Strategy for Long Primary Linear Motors
ID：276
Submission ID：276 View Protection：PUBLIC
Updated Time：2021-06-18 18:15:45 Hits：830
Poster Presentation
Abstract
Long armature linear synchronous motors with segmented power supply are often used in acceleration systems such as high-speed maglev transportation. The power supply mode adopts a parallel power supply with fewer switching switches, but because the neutral point of the motor is independent, the circuit changes during the switching process, which will cause current fluctuations and long switching process time. A switching strategy that combines segmented neutral connection and current zero-crossing shutdown is proposed to solve this power supply problem. The mathematical model is established, and the correctness of the proposed strategy is verified by experiments.
Keywords
Long primary linear motor， Piecewise power supply， Bidirectional thyristors， Current crossing
Submission Author
Liming Shi
Institute of Electrical Engineering of the Chinese Academy of Sciences
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