Operation characteristics of vertical hoisting system about primary section continuous layout PMLSM

ZHU Jun, LI Xiangjun, WU Yuhang, WANG Dong

（School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China）Abstract: Aiming at the period of transition will bring an adverse effect to the overall performance about the primary section continuous layout permanent magnet linear synchronous motor (PSCLPMLSM) of vertical lift system, the working characteristics of PSCLPMLSM was studied by using Finite element method, the independent unit machine and PSCLPMLSM 2D FEM was established in accordance to the existing prototype, both parameters of PMLSM unit machine and characteristics of powerangle, anglecurrent were determined at different power frequencies(6 Hz, 14 Hz, 25 Hz) , the thrust ripple and back EMF were analyzed at the same powerangle between different sections gap(0 mm, 0.5 mm and 1.5 mm). The results indicate that: PMLSM run in low frequency, the armature resistance is inverse proportional to the frequency, so it’s easy to step out. The unit machine of PMLSM in light load, the armature current appears inflection point, the armature current increase on both sides of the inflection point, so in normal operation area, the current is low, the power factor and efficiency are high.

Key words: vertical transportation; primary section continuous lagout(PSCL); permanent magnet linear synchronous motor (PMLSM); unit machine; powerangle characteristics；thrust ripple